Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on January 6, 1981.
As of Wednesday, December 19th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1980 and older model year motor vehicles that are powered by gasoline with conventional carburetors and mechanical or electric fuel pumps with and without recirculation systems.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-75-3
  • Executive Order 75-3 / D75-3
  • ARB # D-75-3
  • Executive Order No: D-75-3
  • C.A.R.B. No. D-75-3
  • Resolution D-75-3
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-75-3 PDF

D-75-3 Document:



                           State of California
                          AIR RESOURCES BOARDC

                        EXECUTIVE ORDER D—75—3
              Relating to Exemptions under Section 27156
                          of the Vehicle Code


                           CAGLE CORPORATION
             "CAGLE MARK II AUTOMATIC FUEL CONTROL® DEVICE


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 Sections 39515
and 39516 of the Health and Safety Code and Executive Order G—45—5;

IT IS ORDERED AND RESQLVED:   That the installation of the "Cagle Mark II
Automatic Fuel Control" device manufactured by Cagle Corporation,
2667 E. 28th St., Suite 517, Long Beach, California 90806 has been found
not to reduce the effectiveness of required motor vehicle pollution
control devices and, therefore, is exempt from the prohibitions of
Section 27156 of the Vehicle Code for 1980 and older model year motor
vehictes that are powered by gasoline with conventional carburstors
and mechanical or electric fuel pumps with and without recirculation
systems.

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

Changes made to the design or operating conditions of the device, as
exempted by the Air Resources Board, that adversely affect the performance
of a vehicle‘s pollution control system 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 pronibited uniess
prior approval is obtained from the Air Resources Board. Exemption of a
kit shall not be construed as an exemption to sell. offer for sale or
advertise any component of a kit as an individual device.

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.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF
ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
ALLEGED BENEFITS OF THE "CAGLE MARK II AUTOMATIC FUEL CONTROL® DEVICE.

No claim of any kind, such as "Approved by Air Resources Bqard" may be
made with respect to the action taken herein in any advertising or other
oral or written communication.


CAGLE CORPORATION                                 EXECUTIVE ORDER D—75—3
                                                       (Page 2 of 2)



Section 17500 of the Business and Professions Code makes untrue or
misleading advertising unlawful, and Section 17534 makes violation
punishable as a misdemeanor.

Section 43644 of the Health and Safety Code provides as follows:

     "43644.   (a) No person shall install, sell, offer for sale, or
     advertise, or, except in an application to the state board for
     certification 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 certified by the state 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 subdivision is a
     misdemeanor."

Any apparent violation df the conditions of this Executive Order will be
submitted to the Attorney General of California for such action as he
deems advisable.

Executive Orders D—75 dated June 13, 1977, D—75—1 dated September Zi,
1979 and D—75—2 dated August 15, 1979 are superseded and of no further
force and effect.


Executed at El Monte, California, th1s
                                   day of January, 1981.


                                              \\\

                                     Drachand
                                     D.       Chief                      Ts
                                  Mob11e Source Contro1 Division


                             State of California
                             AIR RESOURCES BOARD

                              December 17, 1980

                       Addendum to Staff Reports Dated
                     September 15, 1977 and August 3, 1979

"Cagle Corporation Mark II Automatic Fuel Control" Device for Compliance
with the Requirements of Section 27156 of the—Vehicle Code



I.    INTRODUCTION

      Cagle Corporation, of 2667 E. 28th St., Suite 517, Long Beach,

California 90806 requested by letter dated September 9, 1980 (See

Appendix A) an update of the existing Air Resources Board‘s, Executive

Order D—75—2.   The applicant requested that the exemption from the

prohibitions of Vehicle Code Section 27156 for their "Cagle Mark II

Automatic Fuel Control" device be updated to include all 1980 and

older model year motor vehicles that are powered by gasoline engines

with conventional carburetors and mechanical or electrical fuel pumps

with and without fuel recirculation systems.

II.   DEVICE DESCRIPTIQN AND OPERATION
      The ?Cag]e Mark II" is a fuel pressure regulator installed between

the fuel pump and the carburetor.      It has three external fittings:

(a) a fitting at the top for measuring intake manifold vacuum (b) an—

inlet fitting marked "PUMP" for connection to the fuel pump and (c) an
outlet fitting marked "CARB" for connection to the carburetor.      It is

designed to reduce the fuel supply pressure under low demand conditions

but still maintain the required fuel flow to the carburetor under all


operating modes.    The regulator is controlled by the intake manifold

vacuum operating on a spring balanced Buna—N diaphragm.

       Reference is made to Appendix B.   When the engine is idling or

cruising, the intake manifold vacuum draws the diaphragm "H" upwards

against spring "F" thus lifting plunger pin "C" away from diaphragm

"J".    Diaphragm "J" regulates fuel pressure from the fuel pump to

the carburetor in the conventional manner of using opposing spring

tensions (springs 0 and N) balanced to maintain a constant fuel supply

of 1 to 1 1/2 lbs. per square inch.

       During periods of acceleration or heavy demand, the manifold

vacuum is substantially reduced thus allowing spring "F" to force

plunger pin "C" down on diaphragm "J" as shown in the figure of

Appendix C.    This action then assists spring "0" to override the pressure

requlator.

       At manifold vacuum ranging from 0 to 20 inches Hg. and fuel pump

pressures ranging from 3 to 12 psig, the graphs in Figure 1 to 6 of

Appendix C (Daigh Automotive Engineering Co. (DAECO) data) show that
the requlator outlet pressure to the carburetor is generally reduced

as vacuum is increased.     In the operating range of 15 to 20 inches Hg.

manifold vacuum, the higher the fuel pump pressure the lower the

regulator outlet pressure.    This is not true for manifold vacuum range

of 0 to 12 inches Hg.     Hence the device can maintain full discharge

pressure when the intake manifold vacuum is low (as in wide open throttle,

high speed operation) but can reduce delivery pfessure when the intake

manifold vacuum is high (as in deceleration or cruise conditions).


      Appendix D presents the DAECO data for a given fuel flow rate (16

lbs. per hour) and fuel pump pressure (7.0 psig.) showing the regulator

outlet pressure as a function of steady—state vacuum from 0 to 29 inches             '

Hg.   This data shows that between 0 and 15 inches          manifold vacuum, there

is a linear decrease in regulator outliet pressure and at greater than 15

inches    manifold vacuum, the regulator outliet pressure is a content 1.1 psig.

      Appendix E shows the effect of pump speed on regulator outiet

pressure at a given constant flow, fuel pump pressure and manifold

vacuum.   Above 1500 engine rpm, the pump speed has no effect on the

regulator outlet pressure.

III. DISCUSSION
      Prior to issuing Executive Order D—75—2 (which exempts 1979 and

older model year vehicles) the staff performed emissions tests on a

1979 Ford Fairmont/302 CID engine with variable venturi carburetor

and on—a 1979 Chevrolet Malibu/23] CID engine.           The results of these

tests were as follows:

                            1979 Ford Fairmont
                    ARB Emission Data — Cold Start CVS

                                    Grams per miles
                             HC           CO      NOx

      Baseline             0. 492        3. 37    2.46

      Device               0Q.517        3.65     2.48


                         1979 Chevrolet Malibu
                  ARB Emission Data — Cold Start CVS

                                    grams per mile
                             HC           CO       NOx

     Baseline               0.440        9.43     0.89

     Device                 0.353        6.21     0.89

     In addition, fuel pressure measurements were taken before and

after the requlator for various manifold vacuums.         The results were

as follows :

Manifold Yacuum            Fue]l Pressure (#/inz)                    Change
(inches Hg)         Before Regulator     After Regulator           in Pressure
     15                     4.2                    2.55               1.65

     13                     4.2                    2.50               1.70

     11                     4.2                    2.50               1.70

      9                     4.2                    3.05               1.15

      7                     4.2                    3.70               0.50

      5                     4.2                    3.88               0. 32

      3                     3.6                    3.6                0

     In response to Cagle‘s request that their existing Executive Order

be updated to include all 1980 and older model year vehicles that are

powered by gasoline engines with conventional carburetors and mechanical

or electrical fuel pumps with and without fuel recirculation systems,

the staff compared the vehicle‘s fuel system design on some 1979 and

1980 model year vehicles.     No significant differences were noted


between the 1979 and 1980 vehicles‘ fuel system design even though the

newer cars tend to operate more fuel efficient.     The staff, therefore,

did not recommend or perform any additional tests.

IV.~   MANUFACTURER‘S CLAIMS

       The following beneficial claims for the "Cagle Mark II" device
made by the applicant are:

       1)   The device, when installed in a vehicle, will automatically

adjust the fuel pressure at the carburetor to the engines demands

from idling to full throttle.

       2)   Third party testimonials citing actual experienced fuel

economy results are used for advertising purposes in selling the

device.

       3)    Cagle Corporation has an established guarantee program,

"If you do not get an increase in mileage, unit may be returned

within 120 days for refund of purchase price."

       The advertising folder contains testimonials of fuel economy gains

up to 25% when the device is installed in a motor vehicle.

V.     CONCLUSION AND RECOMMENDATION

       Previous ARB confirmatory emission tests showed that the

use of the "Cagle Mark II Automatic Fuel Control" device did not

haye an adverse effect on the exhaust emission control system of

1979 model year vehicles.

       The staff found no significant differences between the 1979

and 1980 vehicles‘ fuel system design.

       Cagle Corporation was granted an exemption (Executive Order


D—75—2 dated August 15, 1979) from VC 27156 for 1979 and older model

year vehicles that are powered by gasoline engines with conventional

carburetors and mechanical or electrical fuel pumps with and without

fuel recirculation systems.

     Based on the above, the staff concluded that granting the Cagle

Corporation an exemption from the prohibitions of the YVehicle Code

Section 27156 for its "Cagle Mark II Automatic Fuel Control" device for

1980 and older model vehicles that are powered by gasoline engines

with conventional carburetors and mechanical or electrical fuel pumps

with and without fuel recirculation systems is justified.   The staff,

therefore, recommends that Executive Order D—75—3 be adopted.



Document Created: 2005-09-01 12:44:26
Document Modified: 2005-09-01 12:44:26

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