Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 25, 1973.
As of Monday, October 14th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1966-1973 model year vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-12
  • Executive Order 12 / D12
  • ARB # D-12
  • Executive Order No: D-12
  • C.A.R.B. No. D-12
  • Resolution D-12
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-12 PDF

D-12 Document:



                        State of California
                        AIR RESOURCES BOARD



                        EXECUTIVE ORDER D—12
            Relating to Exemptions under Section 27156
                        of the Vehicle Code


                      CLYTRONICS CORPORATION
                            "CLYTRON®

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 ORDERED AND RESOLVED:   That the installation of a "CLYTRON"
capacitive discharge ignition system manufactured by Clytronics Cor—
poration has been found to not reduce the effectiveness of required emission
control devices in vehicles and therefore is exempt from the prohibitions
of Section 27156 of the Vehicle Code for 1966—1973 model—year vehicles.
The device consists of a sensor, d—c to d—c converter, storage capacitor,
electronic switch and transformer.      ‘

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.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF
ANY CLAIMS OP THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
ALLEGED BENEFITS OF THE "CLYTRON® DEViCE,.

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.

Section 39130 and 391864 of the Health and Safety Code provide as follows:

     "32130.  No person shall install, sell, offer for sale, or advertise,
     or, except in an application to the boeard 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, adver   e, 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."


     EXECUTIVE ORDER D12                                             "CLYTRON®




           "39184.  No person shall install, sell, offer for sale, or advertise,
           or, except in an application to the board for accreditation of a
           device, 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 poliution control device as an
           accredited device. Any violation of this section is a misdemeanor."

     ABny apparent viclation of the policy or laws will be submitted to the
     Attorney General of California for such action as he deems advisable.




     Executed at Sacramento, California, this é@f?   day of June, 1973.




                                         JOHN A. MAGA
                                         Executive Officer
w.


                           State of Califormia

                           AIR RESOURCES BOARD

                              May 25, 1973

                              Staff Report


                   Evaluation of Clytronics Corporation
               "Clytron" Breakeriless Capacitive Discharge
           Ignition System for Exemption to the Prohibitions
               of Section 27156 of the Motor Vehicie Code




      Clytrontcs Corporation, Coloradoa Springs, Colorado, hes applied for

      exemption to the prohibitions of Section 27156 of the Motor Yehicle

      Code for the "CLYTRON® breakerless cépacitive discharge ignition

      system.   Section 27156 prohibits the installation df a device that

      reduces the effectiveness of motor vehicle emission control systems.

      The applicant intends to sell the device as an "after—market" part

      to replace the standard ignition system.

      The Air Resources Board has adopted criteria for the evaluation of

      "after—market" devices for compliance with Section 27156.   The basis

      for evaluation is defined in the "Air Resources Board Criteria for

      Determining Compliance with Section 27156 of the Motor Vehicle Code",

      dated February 17, 39717


11.   System Description

      For a general description of a breakerless capacitive discharge system,

      see staff report "Evaluation of Capacitive Discharge and Transistorized

      Ignition Systems for Compliance with the Requirements of Section 27156

      of the Motor ¥ehicle Code", dated February 14. 1973.


"Clytron"                              ‘                   May 25, 1973




       The "CLYTRON" device consists of three major components: a sensor,
       power unit and.transformer {electrical schematic attached).        The
       sensor is a photocell mounted on the distributor plate triggered by

       an interrupting light source.       The interrupter is slotted skirt

       rotor cap fastened to the distributor shaft to furnish proper engine

       timing.   The voltage generated in the sensing unit is fed into a

       capacitive discharge ignition system to a trigger circuit which dis—

       charge the storage capacitor into the primary windings of the output

       transformer.    The capacitive discharge circuit consists of a converter

       circuit, storage capacitor and an electronic switching circuit.          The

       output transformer is of a specific turns ratio with secondary output

       voltage of 24000 volts.


III.   Emisston Testing

       The "CLYTRON" device was tested by the Air Resources Board Laboratory.

       The following vehicle was tested:


       1}   1973 Mercury Comet — 302 CID V—8, 2 8b1., automatic transmission

            and EGR.


       The engine was adjusted to vehicle manufacturer‘s specifications for

       spark plug gap, timing, dwell, idle CO and idle RPM.       It was verified

       that the ignition system was operating satisfactorily.


"Clytron"                                                   May 25, 1973




      The test resuits are as follows:

                                                      Exhaust Emissions
      Vehicle              Device                         Hot CVS      ____
                                                HC           CO             NO
                                              gm/mi       gm/mi            gm/mi

      1973 Mercury Comet     No               1.37         15.35           1.52
      1973 Mercury Comet     Yes              1,42         14.60           1.61

                                                 Coil Output Volitage
      Vehicle                          Closed Circuit         Open Circuit
      and RPM                       Baseline With bevice Baseline With Device

      1973 Mercury Comet

            Idle                     12,000      14,000           28,000      22,000
            3,000 RPM                 8,000      12,000           26,000      34 ,000


      The test data indicate that the device does not produce significant

      changes in exhaust emissions.     The coil output voltages are as expected.


Hy.   Conclusions and Recommendations

      It ts the staff opinion that Clytronics Corporation "Clytron" breakerless

      capacitive discharge ignition system will not adversely affect the—per—

      formance of the motor vehicle emission control system when evaluated with

      respect to a conventional ignition system of a "tuned" engine.               This

      device may also have a beneficial effect in the control of vehicle emissions

      in that the device may maintain the "tuned" condition for a longer period

      of time.   Therefore, the "Clytron" breakerless capacitive discharge

      ignftion system should be exempt from the prohibitions of Section 27156

      of the Motor Vehicle Code.


          t                 3                                                                                       f
          !                                                                                                         ©
          I                                              t                            }                             |
          |           Light                           Photo~              ]          5 Smagaa\\
                      Source                          Tra.sistgr                   ;» mnplificc&iop            __               Pulse to Fower Unit
          |              (1)                  |                 (2)                                (3)              \
           I                                      t                       1                        "                1
          10—
          1e nA
                       L            s s nn e n .
                                                       _A                            _L
                                                                                     Lo     i i2 2 e S
                                                                                                                    1



     qo         o n    — & e e                4. PuuLZR
                                                  WORAUIIT
                                                         un iR &R & Cc e                      <l— e—— 3
J ; Reg 5 volts to SJoneor                                                                             ;

     | ‘i                                                                                                      <o           a
 t                                                                                                                          1
     j           5 Volt                                                                                                     1                         #ro
     |           Rogul:;z;éor                                                                                           ;                             12

 t                              ‘                                                                                       t
 |                                                                                                                      1
                                                                                                                                         Zforme
 |                                                              ¥                                                       |               poCrmer
                PFulse Inverter                                Trigger                                                  |               hss        use To
 f                      &                 p._ll mo                    j                                                 |                &E   x Bistribu
 ;              Amp                       f                                    [                                                         Di
 ;                              ) |                                           5|                         {              o           [ 3
                                     ;                                         —               {                        "           ;   414 €___
 1                                  J;_                        __}_                                                                           (7
     |                              —                           z                              { CGap                   [          i     ET-’( )
 I                                                                                             !         (6)            }           f     ~

4                                                                                                                       1
                                                                                                                        I

 f                                                                                                       5o
 H                                                                                                     ~z=~

 bulol 2ol n                                      l e        e e on                e o e     e e e e en e d



                                     Clytronics Ignition System




                                                                                                                        ATTCH, 1.
                                                                                                                        SCLEMATMNCE



Document Created: 2005-09-01 12:40:32
Document Modified: 2005-09-01 12:40:32

| Previous E.O. D-11 | Next E.O. D-12-1 | Next E.O. D-13