Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on December 2, 1974.
As of Friday, September 20th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
RAC : 796 ROC : 77101974 and older, EXCEPT: (1) Vehicles with OE electronic ignition (2) Mazda rotary engine

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-46
  • Executive Order 46 / D46
  • ARB # D-46
  • Executive Order No: D-46
  • C.A.R.B. No. D-46
  • Resolution D-46
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-46 PDF

D-46 Document:



                                                                                  a C
                                                                              i
                           State of California
                           AIR RESOURCES BOARD


                          EXECUTIVE ORDER D~—46
                Relating to Exemptions under Section 27156
                            of the Vehicle Code


               TANNER ELECTRONIC SYSTEMS TECHNOLOGY, INC.
                       "TEST ELECTRONIC IGNITION®"
          "HURST/AIRKEART SCR ELECTRONIC IGNITION, PN 41—12127"
                "RAC ELECTRONIC IGNITION, MODEL NO. 796"
                "ROCKET RACING PRODUCTS, MODEL NO. 7710"
                         "SCR IMPULSE IGNITION"
                     "GOLDSPARK ELECTRONIC IGNITION"



Pursuant to the authority vested in the Air Resources Board by Section
27156 of the Vehicle Code; and

Pursuant to the authority vested in the undersigned by Section 39023 of
the Health and Safety Code;
IT. IS QORDERED AND RESOLVED:   That the installation of silicon controlled
rectifier operated breaker—points isolators manufactured by Tanner
Electronic Systems Technology, Inc. (T.E.S.T., Inc.) and marketed as
indicated below have been found to not reduce the effectiveness of
required motor vehicle polliution control devices and, therefore, are
exempt from the prohibitions of Section 27156 of the Vehicle Code for
1974 and older model—year vehicles equipped with the standard Kettering—
type ignition system consisting of an ignition coil, breaker points,
condenser and powered by a 6 or 12 volt battery with a negative ground.
This system is applicable to Kettering—type systems retrofitted with
Carter or Dana 1966—70 NOx devices with electronic speed sensors. This
system is not applicable to such non—standard systems as: capacitive
discharge, transistorized, breakerless, or the "leading" ignition of a
Mazda rotary engine.

The following is a list of each device manufactured by T.E.S.T., Inc.
and marketed as indicated; each device consists of a sealed case con—
taining the electronic components (two resistors, one silicon controlled
rectifier, one diode, and one capacitor) and four wire leads from the case
that are connected to the ignition coil terminals, distributor coil lead,
and engine ground.


TANNER ELECTRONIC SYSTEMS TECHNOLOGY, INC.
"TEST ELECTRONIC IGNITION®
"HURST/AIRKEART SCR ELECTRONIC IGNITION, PN 41—12127"
"RAC ELECTRONIC IGNITION, MODEL NO. 796"
"ROCKET RACING PRODUCTS, MODEL NO. 7710"
"SCR IMPULSE IGNITION"
"GOLDSPARK ELECTRONIC IGNITION®"                      EXECUTIVE ORDER D—46



            TEST Electronic Ignition        Tanner Electronic Systems
                                            Technology, Inc.
                                            19428 Londelius Street
                                            Northridge, Ca. 91324

            Hurst/Airheart SCR              Hurst/Airheart Products, Inc.
            Electronic Ignition,            20235 Bahama Street
            PN 41—12127                     Chatsworth, Ca. 91311

            RAC Electronic Ignition         Rite Autotrontcs: Corporation
            Model No. 796                   3485 S. La Cienega Blvd.
                                            Los Angeles, Ca. 90016

            Rocket Racing Products,         Rocket Racing Products
            Model No. 7710                  9935 Beverly Blvd.
                                            Pico Rivera, Ca. 90660

            SCR Impulse Ignition            Cannon Industries, Inc.
                                            9073 Washingaton Blvd.
                                            Culver City, Ca. 90230

            Goldspark Electronic            Mr. Gasket Company
            Ignition                        4566 Spring Road
                                            Cleveland, OMo 44131

This Executive Order is valid provided that installation instructions
for this device will not recommend tuning the vehicle to specifications
different than those listed by the vehicle manufacturer.

Changes made to the design or operating conditions of the device as
originally submitted to the Air Resources Board for —evaluation that
adversely affect the performance of the vehicle‘s pollution control
devices shall invalidate this Executive Order.

Marketing of this device using an identification other than that shown
in this Executive Order or marketing of this device for an application
other than those listed in this Executive Order shall be prohibited unless
prior approval is obtained from the Air Resources Board.

This Executive Order does not constitute any opinion as to the effect
that the use of this device may have on any warranty either expressed or
implied by the vehicle manufacturer.


TANNER ELECTRONIC SYSTEMS TECHNOLOGY, INC.
"TEST ELECTRONIC IGNITIQN®"
"HURST/AIRKEART SCR ELECTRONIC IGNITION, PN 41—12127"
"RAC ELECTRONIC IGNITION, MODEL NO. 79%6"
"ROCKET RACING PRODUCTS, MODEL NO. 7710"
"SCR IMPULSE IGNITION"
"GOLDSPARK ELECTRONIC IGNITION®"                      EXECUTIVE ORDER D—46




THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BYTHE AIR RESOURCES BOARD OF
ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
ALLEGED BENEFITS OF THE TANNER ELECTRONIC SYSTEMS TECHNOLOGY, INC., "TEST
ELECTRONIC IGNITION®", "HURST/AIRKEART SCR ELECTRONIC IGNITION, PN 41+—12127",
"RAC ELECTRONIC IGNITION, MODEL NO. 796", "ROCKET RACING PRODUCTS, MODEL NO.
7710", "SCR IMPULSE IGNITION®", OR "GOLDSPARK ELECTRONIC IGNITION®" DEVICES.

No claim of any kind, such as— "Approved by Air Resources Board" may be made
with respect to the action taken herein in any advertising or other oral
or written communication.                         ’     —
Section 17500 of the Business and Professions Code makes unlawful, untrue
or misleading advertising, and Section 17534 makes violation punishable as
a misdemeanor.

Sections 39130 and 39184 of the Health and Safety Code provide as follows:

     "39130. No person shall install, sell, offer for sale, or advertise,
     or, except in an application to the board for certification of a
     device, represent, any device as a motor vehicle pollution control
     device unless that device has been certified by the board. No
     person shall sell, offer for sale, advertise, or represent any motor
     vehicle pollution control device as a certified device which, in
     fact, is not a certified device.   Any violation of this section is
     a misdemeanor."

     "39184. (a) No person shall install, sell, offer for sale, or adver—
     tise, or, except in an application to the board for accreditation of a
     dev!ce, represent, any device as a motor vehicle pollution control
     device for use on any used motor vehicle unless that device has been
     accredited by the board. No person shall sell, offer for sale, adver—
     tise, or represent any motor vehicle pollution control device as an
     accredited device which, in fact, is not an accredited device.   Any
     violation of this subdivision is a misdemeanor."


TANNER ELECTRONIC SYSTEMS TECHNOLOGY, INC.
"TEST ELECTRONIC IGNITION®
"HURST/AIRHEART SCR ELECTRONIC IGNITION, PN 41—12127"
"RAC ELECTRONIC IGNITION, MODEL NO. 796"
"ROCKET RACING PRODUCTS, MODEL NO. 7710"
"SCR IMPULSE IGNITION®"
"GOLDSPARK ELECTRONIC IGNITION®                       EXECUTIVE ORDER D—46




‘Any apparent violation of the conditions of this Executive Order will be sub—
m;tted to the Attorney General of California for such action as he deems
advisable.




Executed at Sacramento, California, this   EZ       day of‘gl%%%éff 1974.




                                  WILLIAM SIMMONS
                                  Executive Officer


                       State of California
                       AIR RESOURCES BOARD

                        November 20, 1974

                           Staff Report

  Evaluation of the Tanner Electronic Systems Technology,
  Incorporated‘s "TEST. Electronic Ignition", "Hurst/Air—
  Heart SCR Electronic Ignition, PN 41—12127", "RAC Electron—
   ic Ignition, Model No: 796", "Rocket Racing Products, Model
   No. 7710", "SCR Impulse Ignition", and "Goldspark Electronic
   Ignition" for Exemption from the Prohibitions of Section
          27156 of the California Motor Vehicle Code



Introduction

Tanner Electronic Systems Technology (T.E.S.T.), Inc., of 19428
Londelius Street, Northridge, California 91324 has applied for an

exemption from the prohibitions of Section 27156 of the California

Motor Vehicle Code for the "TEST —Electronic Ignition" device.    In

addition, T.E.S.T., Inc. has applied for exemptions for the following

devices manufactured by them under private label:


Hurst/Airheart SCR               Hurst/Airheart Products, Inc.
Electronic Ignition,             20235 Bahama Street
PN 41—12127                      Chatsworth, CA 91311

RAC Electronic Ignition          Rite Autotronics Corporation
Model No. 796                    3485 S. La Cienega Blvd.
                                 Los Angeles, CA 90016

Rocket Racing Products,          Rocket Racing Products
Model No. 7710                   9935 Beverly Bivd.
                                 Pico Rivera, CA 90660

SCR Impulse Ignition             Cannon Industries, Inc.
                                 9073 Washington Blvd.
                                 Culver City, CA 90230

Goldspark Electronic            ~Mr. Gasket Company
Ignition                         4566 Spring Road
                                 Cleveland, OKH 44131


      According to the applicant, the private label devices are

      e]ectrofiicdl]y identical to the "TEST Electronic Ignitipn"

      and differ only in packaging and labeling (See Exhibit III).

      Section 27156 prohibits the sale, advertising, or installation

      of any device or mechanism which reduces the effectiveness of

      the required motor vehicle emissions control system.    The applicant

      is requesting the exemption be granted for 1974 and older—model

      vehicles equipped with the standard Kettering—type ignition system

      consistifig of an ignition coii, breaker points, condenser and

      powered by a 6 or 12 volt battery with a negative ground.    This

      system is not applicable to such non—standard systems as: cap—

      acitive discharge, transistorized, breakerless, or the "leading"

      ignition of Mazda rotary engines.


II.   Device Description and Function

      The "TEST Electronic Ignition" is composed of a sealed cése con—

      taining the electronic components (two resistors, one silicon

      controlled rectifier, one diode, and one capacitor) and four

      wire leads from the caée to be connected to the ignition coil

      terminals, distributor coil lead, and engine ground.,   The case

      is mounted in a convenient location in the engine compartment

      with coil and distributor leads as short as possible (refer to

      Exhibit I—Installation instructions}.   If the SCR should fail

      by shorting (applicant claims this is the most likely failure

      mode) the ignition system will continue to operate as a normal

      Kettering system (Refer to Exhibit II—U.S. Patent 3,741,184 and

      Device Specification).


    wWhen the points close, the current flows through the dfode and

    two resistors as well as the SCR {see circuit diagram Exhibit I1I,

    page 5).      The pointg' opening initiates the collapse of the primary

    coil‘s magnetic field and the capacitor‘s charging.      When the

    capacitor reaches its maximum charge and begins to discharge back

    into the primary coil, the reverse current flow switches the SCR to its

    blocking state and the points are then removed from the circuit elect—

     ronically.     When the points close agdin, the capacitor discharges and

    the SCR switches back to its conducting mode and the cycle repeats.

    This action allows the energy previously lost in continued point arcing

     to be made available to the system for increased coil—capacitor ringing.


    _According to the applicant, the "TEST Ignition System" will increase

     point life, spark plug life, and increase available firing volitage.


III. Device Evaluation
    The applicant did not submit any emission data showing the effects

    of the device on the OEM emission control system.      In order to
    evaluate the device, the electrical output characteristics of an

     ignition system with and without the device were compared.


    The tests were conducted on the Air Resources Board‘s ignition

    system simulator which consists of a Sun distributor tester, Tektron—

     ix oscilloscope, Sun ignition analyzer, and associated auxiliaries.


    The ARB evaluation consisted of measuring the spark advance, spark

    duration , available secondary voltage, secondary voltage rise time,

    and actuation RPM of the NOx retrofit device vacuum controlling valve.


The test coflfigurations are as follows:

Baseline I              Simulator with Carter CER NOx retrofit device

Device I                Simulator, Carter CER Kit, and Hurst/Airheart SCR Electronic Ignition

Baseline I I :          Simulator   with Dana Retronox electonic speed sensor

Device II               Simulator, Dana Retronox, and TEST Electronic Ignition


                                            _Table
              Centrifugal Spark Advance in Crankshaft Degrees

RPM          Baseline I             Device I         Baseline II          Device II

 600                    0.0            0.0               0.0                0.0     ‘

1000           .        3.0            3.0               3.0                3.0

1500                19.0              19.0              19.0              19.0

2000                21.0              21.0              21.0              21.0
2500                24.0              24.0              24.0              24.0

3000                25.0              25.0              25.0              25.0 —


                                 Spark Duration in Microseconds
RPM          Baseline I             Bevice I         Baseline 11        Device iI

 600               2200              2000              2400               1900

2000               1700              1600              1800               1600

                              Secondary Voltage Rise Time in Microseconds

RPM          Baseline I             Device I         Baseline 11        Device 11

 600               30                  35                30                 30

2000               30                  35                30                 30


                  NOx Retrofit Device Valve Actuation Points in RPM

Configuration          Valve Opens                Valve Closes

Baseline I              1180       j                1000

Device I                1180                        1000

Baseline II             2000                        1800
Device II               2000                        1800

Table I shows the results of the test.       The installation of the devices

did not significantly change the output characteristics of the OEM ignition

system.


Conclusion and Recommendation

Based on the ARB test results, the installation of the "TEST Electronic

Ignition" or any of the other five identical devices listed in the

Introduction would not adversely affect the performénce or operation of

the OEM emission control system.       The staff recommends that Tanner Electronic

Sygtems Technology, Inc. be fssued an exemption from the prohibitions of

Section 27156 of the Vehicle Code for its "TEST Electronic Ignition" and
the other five devices manufactured by them and lTisted with their marketing

firms in the Introduction for the following:


Any 1974 and older model—year vehicles equipped with the standard Kettering—

type ignition system consisting of an ignition coil, breaker points,

condenser and powered by a 6 or 12 volt battery with a negative ground.

This system is not applicable to such non—standard systems as:    capacitive

discharge, transistorized, breakerless, or the "leading" ignition of a

Mazda rotary engine.   This system is applicable to Kettering—type systems

retrofitted with Carter or Dana 1966—70 NOx devices with electronic speed

sensors.


                                                                                      Nt
 Page 1




                      MAINVTENANCE
                  ANB TROUBLE SHOOTING
            The Electronic Ignition System requires no periodic maintenance. If the
            unit should fail, its unique fail—safe design will automatically revert the cir—




                                                                                                             n
            cuitry back to the conventional ignition system, No indication of this fail—safe




                                                                                                         m e
            mode is visible. To determine if your system is functioning properly, stop




                                                                                                      ev
            the engine, disconnect the Red wire from the coil and hold it away from
            ground. Attempt to restart the engine. If it runs, then the Electronic Igmtlon
            System is in the fail—safe mode and should be replaced.


                                                                                                                            ri e d m\
                                                                                                                 ' \f\r\ r\
                                                                                                       « ( \ ““ -                                     Cl cce& s
EXHIBIT—L




                                                                                                              .                                                  /Q

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                                  T11EL/
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                                 Incorporetec
                     NORTHRIDGE, CALIFO®EMRRNIA

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                                                                                                 clomon olenenementith Ancemiennnctobrnstomacs ntas   ce ie mmenn on n


            /.eELENAL BESCRIPTION
 Page 2




                                                                                                [CouRLLATIGL                                                              ~
             YOUR NEW ELECTRONIC IGNITION SYSTEM
                                                                                                The Electronic Ignition System should be mounted in the engine room as
              ® Increases ignition breaker point life                                           close as possible to the distributor and coil. Do not mount directly on the
              * Increases spark plug life                                                       engine as direct engine heat may damage the unit. Refer to Figure 1.
              e Increases time between tune—ups
              e   Improves gasoline mileage
              e   Features fail—safe design
              *   Improves starting especially in damp weather                                                                                                     TO SPARK
              e   Improves ignition efficiency especially under heavy load and at high RPM.
                                                                                                                                                                       PLUGS
                                                                                                                                                                  _

             FEATURES                                                                          EROM!‘
                                                                                               icnition   +      ——
                                                                                               SWITCH
             APPLICATION
             The Electronic Ignition System attaches in minutes to any engine with a           engive .|
             conventional (Kettering) type ignition, 6 or 12 volt negative ground. Works       GROUND T
             on engines with any number of cylinders.                                                                                            PUBPLE WIRE
                                                                                                                              BROWN WIRE         (SPLICED To DISTRIBUTOR
                                                                                                                                                 DISTRIBUTOR           —
                                                                                                          IGNITION            BLACK WIRE         —CoIL LEAD)
EXHIBIT—I




             WATERPROOF                                                                                   e
             The Electronic Ignition System is a sealed waterproof unit connected directly
             to the ignition‘s primary or low voltage circuit.
                                                                                                                      Figure 1—WIRING DIAGRAM
             SAFETY                                —         j                   .
             The Electronic Ignition System contains no moving parts and produces no            1. Mount electronic ignition securely in place. Select the location so the
             sparks or arcs in operation. It is connected only to the primary ignition cir—        leads may be cut as short as possible. Note: long leads may increase
             cuit thus presents no additional shock hazard. Its fail—safe design provides          the effect of existing sources of radio interference.
             for automatic switching back to the conventivnal ignition system in case of
             failure of the system. This feature provides engine power under all conditions.
                                                                                                2. Connect the Black lead to either the ignition coil mounting bracket or a
                                                                                                   good engine ground.
             TECHNICAL                                       ‘
                                                                                                3, Add the Red lead to the coils (+) terminal.
             The Electronic Ignition System is a new approach to improving the perfor—
             mance of an engines ignition system. Using the time proven reliable com—           4. Remove the distributor lead from the coils (—) terminal and splice it to
             ponents of the conventional, Kettering design ignition system a space—age             the units purple wire. Tape connection securely with electrical tape.
             solid state device is added which switches the heavy current during the
             critical point closing and opening periods. This minimizes point deteriora—        5. Connectthe Brown wire to the coils (~—) terminal,
             tion and burning which is the major reason for the need of frequent tune—ups.
             Additional circuitry increases primary circuit ringing while the spark plug        6. For maximum point life, the standard ignition condenser in the distributor
             is firing, thus increasing the power delivered to the plug. The result is a           may be disconnected or removed and discarded, The Electronic Ignition
             hotter spark which burns off harmful deposits before they reduce plug life.           System will provide full arc suppression under all conditions; including
             The design features a fail—safe mode, which instantly and automatically               the fail—safe mode. Note: if condenser is disconnected be sure to tape
             reverts back to a conventional ignition, in case of system malfunction.




            \e
                                                                                                   and secure its pigtail lead.


 Page 3
                                                     hROT RImHERRT
                                                           GSUCTE,
                                                    l-:m
                                                              2023 Bahoma S Chatsworth; Cai. 91311 a 213— 6826500


                                                                                                                                  fed Vize

                                                                                                                                                Hromn cire




                                                                                                                            ani                                              Purple Wire
                                                                                                                                                                             (Spiteed to


                                                                 vmfl
                                                                                                                    €Bete.) C{-     .   ——|(Dter.)
                                                                                                                                                                             Distributar=
                                                                                                                                                                             Corl lead)

                                                                                                                             Iznttton        j, Mlack fire
                                                                                                                               toil            q
                                                                                                                                                          t
                                                                                                                                                        Engine Cround




                                                                                                                                        ~ THIS UNIT GUARANTEED FOR 5 YEARS.
                                                                                                                                          Keep your sales shp
                                                                                                                                                            as proof of date of purchase.
                                                                                                                                                            1           ;1
                                                                                                                    INSTALLATION: _                     .               t
EXHIBIT—I




                                                                                                                    The Hurst/Airheart SCR Electronic Ignition quickly attaches to any engine
            YOUR NEW HURST/AIRKEART ELECTRON!C IGNIHON PROV IDES:                                                   with a conventional § or 12 volt negative ground type ignition. (not for use
                 Easier and quicker starts            ,"         ,                                                  with dual ignition or magnetos).
            o+




                 Increased point and plug life         1
            ®




                                                                                                                    1. Mount Hurst/Airheart SCR Electronic Ignition securely to fender well,
                 Increased time between tuns—ups
            o#




                                                                                                                       firewall or other convenient location as close to the distributor as practical.
                 Improved ignition efficiency (especially under heavy load and at high RPM’S)
            &




                                                                                                                        Long leads may increase the effect of existing sources of radia interference.
                 Better gas mileage {due to maintaining * tuned"" condmon longer and
            *




                 increasing point and plug life)                  .                                                 2. Connect the Black lead (ground) to a good engine ground such as the
              Increased power to plugs                                                                                  ignition coil mounting bracket.
            *




            * Waterproof design (completely sealed, unit)
            * Failsafe design (automatically switches back to conventional ignition system                          3. Connect (add) the Red lead to the coil‘s battery [+) terminal.
              if a failure should occur)
                                                                                                                    4. Remove the distributor .l‘ead from the coil‘s distributor (—) terminal and
            How your new HURST/AIRHEART ELECTRONIC IGNITION works:                                                      splice it to the Purple wire. Tape splice well with electrical tape.
            The Hurst/Airheart SCR Electronic Ignition uses the seliable, proven compon—                            5. Connect Brown wire to the coil‘s distributor (—) terminal.
            ents of your conventional ignition and adds a solid state module to perform the
            switching of heavy current during the periods of opening and closing the points,                        6, Disconnect or remove the standard ignition condenser in the distributor. If
            this minimizing point deterioration and burning, and increaging point life.                                condenser is disconnected and not removed, be sure to tape and secure its
            While each spark plug is firing, additional c rcuitry provides increased primary                           pigtail lead. Removal of the standard condenser (or its disconnection) is
            «ircuit ringing, increasing the power deliveied to the plug. This results in a                             not necessary for the electroni¢ ignition‘s operation; however it is tec—
            Sotter spark to butn up harmful deposits before they damagé plugs, increasing                              ommended to maximize point life. The Electronic Ignition w orovide full
             ‘lug life.                                                                                                arc suppression under all cdtm'fiions, even in the fail—safe


                        EXHIBIT—I                              Page 4




October 11, 1974



The device is not suitable for other than standard

Kettering Ignition systems such as capacitive discharge

syétems (CD), Transistorized systems, Breakerless

systems, thé "Leading" Ignition of Mazda engines or

similar aprrangements That deviate from the basic



                                       structions to read:

Disconnect or remove the standard ignition condenser

in the distributor,     The Electronic Ignition will provide

full arc suppression und%g‘all conditions, including

the fail—safe mode, .

Note:   If Condenser is disconnected be sure to tape

and secure its pigtail lead.


Revised October 16, 1974




                                  uno
                                Vice President/Engineering


                                           EXHIBIT—I1I                                           ~         Page 1




                                    SPECIFICATIONS — 1IGNITION SYSTZK



    I.    Product Description                                                        _                          .
                                                                                 SCR TEST Electronic
          Manufacturer T.E.S.T. INC.                      Name & Hocsl No. Irnition

          Address 19428 Londelius St.,                            Telephone (213) 3h9—246 3

               Northridge, California                Mounting Position                   _ any


          Type of Ignition

          Kettering                Capacitive Discharge          €1




                                                                        c+
                                                                        5
                                                                             C
                                                                   fo
                                                                        0



                                                                             3
                                                                             7
                                                                                 &
          Other            scR


   II.    Input Requirement

          System input voltage and current (volts and amps — XPM curve)
                  Same as stock




I11I.     OUTPUT Characteristics

         A.     Primary System

                 1.   System output voltage and current (volts and amps — RPM curve)
                      Same as stock




         ~B.    Secondary System
                1.    Available output secondary voltage ({specify RPM or submit voltage— rpm
                                                                                   curve)
                                                                                                     tou
                      Same as stock


                                 © EXHIBIT—II                                                 Page 2



         2.   Secondary voitage rise time                Same        stock



         3.   Secondary output enercy             (at iinout voitage)
                                                                t     Increased degfrec
              ouLpLg d¢, nds o                          ariables Such as sparkplugs
                                    1                    :  manudfacturer.

                                        "./ engine RM) ;.:c‘ s;;'rf\' gap) Inm«w



IV.    Design details

      Storage capacitor capacitance (uf) and stored voltage
                   Hotapplicahle
      C—D unit inductance (uH)           Not applicable

      Pulse triggering source            Not applicable


      Type of transformer in C—D and turn ratio                  Not applicable



      Transient voltage protection (open circuits and voltage surges)
      Inherent in SCR and diode by avalanche phenomcnon

      Close point time limit _          Same as stock

      Maximum point current   and ground circuit resistance

                 Same as stock

      Oscillator frequency                Not applicable



      Number and type.of power transistor                      Not applicable



      Ballast resistOrs required?          Yes     _X           No

      Resistor Type              Resistor Size (ohms)                Stock 0
      Switch back to stock system?               Yes     __X          No                  —
      Describe methods   Automatic—Details in attached patc t.


                                   EXHIBIT~—ILI




     Moisture and Vibration Protection              Potted



     Operating Temperature Range       ~45° to plus 212°F



     Humidity Range       Not affected by humidity existing under the

           hood due to potting.


     Modifications from 0.E.M.
a




     Ignition timing modivied?         Yes               Ro       _X

     State modifications from O.E.M. Ignition System Chaructsristics

                  None



     Engine Setting Changes?     Yes                No        x

     Describe Changes
           None

     Specify any other changes from O.E.M.           None




VI.. Device information

    Please attach circuit diagram, O.E.M. and device spark advance curves and

    photograph of spark line produced by device.

    Description of operating principle            Attached


                                                    EXHIBIT—IL                                                            Page 4



  United States Patent 191                                                                       tit}        3,741,184
_ Tanner et al.                                                                                  {45] June 26, 1973

  [54]       ELECTRO—MECHANICAL SWITCHING                           24,805     4/1966    Japan............     «. 123/148 E
           SYSTEM                                                               OTHER PUBLICATIONS
  {75}     Inventors: James L. Tanner, Reseda; Bruno A.
                                                                  Westinghouse SCR Handbook, 4/64, pages 104—116,
                         Rist, Northridge, both of Calif.
                                                                  Robert Murray.
  {73]     Assignee: Tanmer Electronic Systems
                         Technology Inc., Northridge, Calif.      Primary Examiner—Laurence M. Goodridge
  [22]     Filed:        Nov. 8, 1971                             Assistant Examiner—Ronald B. Cox
                                                                  Attorney—Richard Morganstern
  [21}     Appl. No.: 196,438
                                                                  (571                  ABSTRACT
  [52)     U.8. CL..                     123/148 E, 123/148 R     An electronic switching system having particular utility
  {51]     lnt. CL..                              ... FO2p 1/00   in ignition systems for internal combustion engines is‘
  {58]     Field of Search ...                    «. 123/148 E    disclosed. A silicon controlled rectifier in series with
                                                                  the inductor coil and breaker points is utilized to isolate
  (56]                    References Cited                        the breaker points from the ignition coil and to carry
   ©                UNITED STATES PATENTS                         out the make and break functions. Should the SCR fail
  3,306,274         2/1967    Motto et al. ... 123/148 E          as by shorting, the ignition system will continue to op—
          FOREIGN PATENTS OR APPLICATIONS                         erate as a conventional ignition system.
       984,137       2/1965   Great Britain .       . 123/148 E                 5 Clains, 1 Drawing Figure




                                                                                                                                2+


                     EXHIBIT—ILI                   Page 5 ~


PATENTEDJuK 26 973        *        .   3.741.184


  |                                                      EXHIBIT~—IL                                                               Page 6



?e                 —                 1
         ELECTRO—MECHANICAL SWITCHING SYSTEM
               BACKGROUND OF THE INVENTION
                                                               3,741,184
                                                                                                     2
                                                                        pulse amplifiers to control the output transistor. These
                                                                        systems, however, require the transistor switch to be
  1                                                                    operated at high voltage and current levels. Transistors
           1. Field of the Invention                                   capable of mecting such criteria are extremely expen—
 +1       This invention relates in general to a solid state as—     5 sive and require elaborate compensation techniques
        sisted switching system in which a switch makes and            such as special coils, diode protection, etc.
        breaks a ringing inductive load and, more particularly,            Another, alternate, approach is exemplified by the
        to a new and useful ignition system for internal com—           so—called "capacitor discharge ignition systems." In this
        bustion engines and the like.                                   type of system, the battery voltage is typically stepped
          2. Description of the Prior Art                            10 up to several hundred valts by a DC to DC converted
          The standard ignition system of the automotive in—            and stored in a capacitor. The capacitor is discharged
        dustry utifizes an ignition coil which has a primary            into the primary of the ignition coil, at the appropriate
        winding and a secondary winding. The ignition coil sec—         time, by an electronic switch, The capacitor energy is
        ondary winding is connected via a suitable distribution         thus converted to a high voltage pulse in the secondary
        means to the engine‘s spark plugs. The ignition coil pri—    15 winding of the ignition coil. In this approach too, the
        mary winding is connected in series with a source of            points typically carry only control current. Capacitive
        DC power, typically the automobile battery, and a set           discharge systems suffer from the disadvantage that
        of breaker contacts. The breaker contacts open and              they are generally extremely complex and costly. Fur—
        close in synchronism with the motor in accordance               ther, a common disadvantage of most known alternate
        with a pretermined sequence typically controlled by a        20 electronic schemes is that upon failure of any compo—
        mechanical means such as a breaker cam.                         nent the entire ignition system fails.
          In such an ignition system the spark energy for the
        plugs is supplied by the DC battery which is storedand                    SUMMARY OF THE INVENTION
        subsequently released by the ignition coil, at an appro—             An electronic switching system is disclosed having
         priate voltage level, to jump the spark gap. In opera— 25 particular utility in ignition systems for internal com—
         tion, closure of the points causes current to flow in the        bustion engines. The system obviates many of the defi—




                                                                                                                                       a*
         primary of the ignition coil and results in the build up         ciencies of the prior art systems while remaining un—
         of a magnetic field. Opening of the points causes the            complicated and economical,
         sudden collapse of the field which results in a high in—            In accordance with a preferred embodiment of the
         duced voltage in the secondary winding of the ignition 30 present invention a silicon controlled rectifier is uti—
         coil. A capacitor is typically connected across the              lized to isolate the breaker points from the ignition coil
         points to limit the rate of the field collapse to limit arc—     and to carry out the make and break functions. The
         ing of the contacts to an acceptable level, Frequently           anode and cathode of the silicon controlled rectifier
         a ballast resistor is connected in series with the configu—     are connected in series with the DC power source, pri—
         ration thus described to limit the saturation current of 35 mary coil and breaker points of a standard ignition sys—
         the ignition coil primary.                                       tem and located between the primary of the ignition
            The basic ignition system above described has proven         coil and the points.
         extremely useful and has remained substantially un—                 Means are provided for turning the SCR "on" re—
        changed in form and function for many years. Among               sponsive to the closing ofthe points. With the SCR con—
         its advantages are its extreme simplicity of design, reli— 40 ducting and the points closed the ignition coil primary
        ability and economy.                                             current is carried by both the SCR and the points.
            The basic ignition system, however, has several im—          Means are provided for turning the SCR "off" respon—
        portant disadvantages. For example, substantial volt—            sive to the opening of the points. The Ay—back voltage
        ages appearing across the breaker contacts result in ox—         generated by the ignition coil primary is thus sustained
        idation, erosion, and pitting of the contacts. The con— 45 by the SCR and not by the points, Arcing of the points
        tacts thus require frequent maintenance and replace—             and the resultant energy dissipation and spark plug
        ment to enable continued efficient performance of the            wear is minimized. Substantial additional energy is
        ignition circuit. Arcing of the points also reduces avail—       made available for application to the plugs which re—
        able spark energy because it acts as a load on the tuned         sults in faster starts, more complete combustion of the
                                                                      50
        circuit formed by the ignition coil primary and the ca—          fuel, lower gas consumption and a reduction in emitted
        pacitor connected across the points. The dissipation of          pollutants.                                               .
        available energy, while important at all engine speeds              As another unique feature of the present invention
        becomes most significant at higher engine RMP‘s. This            should the SCR fail, the ignition system will continue             To
      ~ is so since at high engine speeds the contacts are closed 55 to operate as a conventional ignition system. The sys—
        for only a relatively short time period. Current build up        tem circuitry results in a decrease in the wear charac—
        through the ignition coil primary does not normally              teristics of the points and an increase in the energy
        reach full saturation value before the points are                available for application to the plugs.
        opened. Thus, the available output voltage is reduced
        from its optimum value. Any further dissipation of en— so              BRIEF DESCRIPTION OF THE DRAWING
        ergy as by arcing of the points further reduces available           FIG. 1 is a circuit diagram of a preferred form ofithe
        spark energy.                                       .            invention as incorporated in an ignition system for an
           Numerous and varied attempts have been made to                internal combustion engine.
        eliminate the deficiencies of the standard ignition sys—
        tem. In one approach transistor switching circuits are £,                 DESCRIPTION OF THE PREFERRED
        employed with the points carrying only control or bias                                 EMBODIMENT
        current. Some systems do away with the breaker points               Referring now to FIG. 1, there is shown a circuit
        completely and use magnetic or optical pick—ups and              schematic of a preferred form of the invention as incor—


                                                                 EXHIBIT—II                                                                   Page 7


                                                                      3,741,184
                                            3                                                                4
                porated for use in an ignition system for internal com—            it will be apparent that the points 30 are discon—
                bustion engines or the like. A DC battery 10 is posi—            nected or isolated from the high fly—back coil voltages
                tioned in series electrical configuration with an ignition       after the— initial quarter cycle of the inductive—
                switch 11, a ballast resistor 12, primary winding 17 of          capacitive ringing circuit. This is so since after SCR 25
                a transformer 1§ and a make—break switch (breaker 5. is turned off it will revert to its forward blocking state
                points) 30.                                           and isolate the high inductor voltages from the points
                  The secondary 16 of transformer 15 supplies current 30.
                at high voltage to the spark plugs of the internal com—            In this manner the high fly—back voltages do not
                bustion engine in a manner well known in the art. A ca—          cause significant dissipation of stored ignition coil en—
                pacitor 32 is connected across the breaker points 30 as 10       ergy via arcing across the points, as is experienced in
                is also known in the art, The configuration thus de—             standard ignition systems. A significantly higher per—
                scribed comprises the standard automotive ignition sys—          centage of the available energy thus finds its way to the
                tem.                                                             spark plugs. The breaker points tend to last an appre—
                   In accordance with the present invention, a silicon           ciably longer time!
                controlled rectifier or similar switching device 25 is 15          The system of the present invention has a further ad—
                connected with its anode and cathode terminals 26 and            vantage in that a unique fail—safe feature is provided.
                28 respectively between the primary of the transformer           This fail—safe feature stems from the typical failure
                and the breaker points. From the other end of the pri—           mode of an SCR. It is known that should an SCR be
                mary winding 17 a diode 18 and resistor 21 are con—              subjected to cither excessive current or temperature
                nected to the gate terminal 27 of the SCR. An optional . 20      levels the SCR exhibits a tendency to short‘between its
                resistor 22 is connected between the gate and the cath—          anode and cathode terminals rather than open. Should
                ode of SCR 25. Resistor 22 reduces the sensitivity of            the SCR 25, as incorporated in the present system, ex—
                the gate to voltage spikes in a manner well known in the         perience such a failure mode the ignition system as a
                art. A capacitor 33 is connected between the SCR                 whole would still continue to operate since the remain—
                anode and ground, as shown.                              25      ing components would function as a standard ignition
                   The system thus described operates as follows:                system.
                                                                                   Although the preferred embodiment of the present
                   With the ignition switch closed, and the breaker
                                                                                 invention has been described in connection with an ig—
                points initially open, closure of the breaker points 30
                                                                                 nition system for use in an internal combustion engine
                allows gate current to flow from the battery 10 through
                                                                         30      it is not so limited. The principles above taught may be
                diode 18 and resistor 21. The gate current turns "on
                                                                                 applied whenever a switch is required to make and
                27 the SCR after a small turn on delay corresponding
                                                                                 break a ringing inductive load. The system of the pres—
                to the time required to spread conduction and regener—
                                                                                 ent invention, it will be appreciated, is characterized by
                ation through the solid—state device‘s junctions. Initially
                                                                            extreme simplicity and low cost of fabrication as well
                points 30 "see" only the SCR gate current and what—
                                                                         35 as by unique fail—safe characteristics and improved per—
                ever charge may be contained in capacitor 32 at the in—     formance.
                stant of point closure,                                       We claim:
                  With the SCR 25 conducting and the points 30                1. In a spark ignition system including a DC source,
                closed, ignition coil primary current is carried by both    an energy storing ignition coil and a make—break switch
                the SCR and points up to the limit set by thesbailast re—     40 connected in series, the improvement which comprises:
                 sistor 12 and the winding resistance of the ignition coil.    a silicon controlled rectifier having anode, cathode
                 The time period just described is referred to as dwell           and gate terminals, said anode and cathode termi—
                 time. The current flowing through primary coil 17                nals being connected in series configuration be—
                 stores energy therein. This energy is subsequently dissi—        tween the ignition coil and the make—break switch;
                 pated through secondary winding 15 upon opening of 45         means responsive to the closing of the switch for ap—
                 the breaker points 30 in a manner to be hereinafter de—          plying a gate signal to said gate terminal to render
                scribed.                                                          said rectifier conductive, enabling current flow
                   To initiate a spark the points 30 are opened causing           through the ignition coil to store energy therein;
                a collapse of the magnetic field in the coil 17. Immedi—         and           ‘
                ately ‘after opening of the points 30 the SCR remains 5° means responsive to the opening of the make—break
                conducting since the ignition coil will not allow an in—          switch for rendering said rectifier non—conductive,
                stantaneous change of current flow. Capacitors 32 and             whereby the make—break switch will be isolated
                33 are thus charged until the magnetic field in the coil          from the ignition coil thereby minimizing arcing
                is depleted. In a typical embodiment capacitor 32 and 55          across the switch and increase the efficiency of the
                33 may be charged to approximately 300 to 350 volts.              ignition system.
                   After the capacitors reach their maximum charge,            2. The system of claim 1 wherein said gate signal ap—
                current will flow from capacitor 33 back into the coil      plying means comprises:
                17. This reverses current flow through the SCR and re—         a diode connected between the DC source—ignition
                turns it to a blocking state. Capacitor 32, however, will        coil junction and said gate terminal and poled to
                retain its charge and prevent gate turn on by keeping            conduct gate current from the battery to said sili—
                diode 18 in the gate circuit reverse biased. Capacitor.          con controlled rectifier gate terminal responsive to
                33 and the ignition coif thereafter function as an iso—          the closing of the make—break switch.
                lated tuned circuit. This results in dissipation of the        3. The system of claim 2 wherein the make—break
                stored energy in an oscillatory manner and induces a
hopsczslzl zs




                                                                            switch has a first terminal connected to said cathode
                high voltage into the secondary winding 16. This volt—      terminal and a second terminal connected to a refer—
                age is routed in the standard manner by distribution        ence potential point, said means for rendering said rec«
                means, not shown, to the appropriate spark plug.            tifier non—conductive comprises:


                                                EXHIBIT—ILI



                                                     3,741,184
                            5                                                              6
   a first capacitor connected between said cathode ter—          switch, whereby the make—break switch is electri—
      minal and the reference potential point; and                ‘cally isolated from said inductor to prevent arcing
 " & second capacitor connected between said anode                across said switch.
      terminal and the reference potential point whereby        5. An electronic ignition system for internal combus—
      said first and second capacitors will be charged 5. tion engines, said system comprising:
     subsequent to the opening of the make—break                a DC battery;
     switch and thereafter back bias said silicon con—          an ignition coil having primary and secondary wind—
      trolled rectifier to render it non—conductive, the ig—      ings;
      nition coil and said second capacitor functioning as      a silicon controlled rectifier having anode, cathode,
      an isolated tuned circuit after the silicon controlled 10   and gate terminals;
      rectifier is turned off.                                  a pair of breaker points, said battery, ignition coil pri—
   4. In a system which includes a DC source of power,            mary winding, anode and cathode terminals, and
an energy storing inductor means and a periodically               breaker points being connected in series electrical
opening and closing make—break switch in series elec—             configuration with said anode and cathode termi—
trical configuration, the combination comprising:                  nals being connected between said primary wind—
   a silicon controlied rectifier having anode, cathode            ing and said breaker points, the breaker point re—
      and gate terminals, said rectifier anode and cath—          mote from said cathode terminal being connected
      ode terminals being connected in series electrical          to a point of reference potential;
      configuration between said inductor means and             a first capacitor connected between said anode ter—
      said make—break switch;                                20   minal and said reference point;
   means for turning said silicon controlled rectifier on       a second capacitor connected between said cathode
      responsive to the closing of said make—break switch          terminal and said reference potential point; and
      whereby energy from said source will be stored in         a diode connected between the primary winding ter—
      said inductor; and                                           minal remote from said anode terminal and said
   means for turning said silicon controlled rectifier off 25     gate terminal.
      responsive to the opening of said make—break                                  #  *   *   J  *




                                                                                                                             «*
                                                           30




                                                           35




                                                           40




                                                           45



                                                           50



                                                                                                                                  w
                                                           55




                                                           60




                                                           65


                                                      EXHIBIT—III                             Page 1

     27            .m__fi_.lil;p_._._“_fin~.                                         '            “\\\

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                                                                                              //
          JOHN GUEDEL
      Chairman of the Board
       ART LINKLETTER
          Vice Chairman
      JAMES L.TANNER                                          ‘November 14, 1974
            President
        BRUNO A. RIST
   Vice President/Enginearing


                                Mp. G. C. Hass, Chief
                                Division of Vehicle Emission Control
                                Air Resources Board Laboratory
                                9528 Telstar Avenue
                                El Monte, Calif.   91731

                                Dear Mr. Hass:

                                TEST Incorporated hereby certifies that the Electronic
                                Ignition systems manufactured under private label for
                                Hurst/Airheart Products, Inc., 20235 Bahama Street,
                                Chatsworth, California 91311 (Hurst/Airheart SCR Electronic
'                               Ignition, PN 41—12127); Rite Autotronics Corporation, 3485
                                South La Cienega Blvd,, Los Angeles, California 90016
                                (RAC Electronic Ignition, Model No. 79§); Rocket Racing
                                Products, 9935 Beverly Blvd., Pico Rivera, California 90660
                                (Model Wo. 7710); Cannon Industries, Inc., 9073 Washington
                                Blvd., Culver City, California 90230 (SCR Impulse Ignition);
                                and Mr. Gasket Company, 4566 Spring Road, Cleveland, Ohio
                                44131 (Goldspark Electronic Ignition), are electrically
                                identical to the TEST Electronic Ignition manufactured
                                under Patent No, 3,741,184.

                                                              Very truly yours,

                                                              T.E,.S.T. INC.



                                                              Bruno A.   Rist,
                                                              Vice President/Engineering

                                BAR/mt



Document Created: 2005-09-01 12:45:51
Document Modified: 2005-09-01 12:45:51

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