Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 17, 1978.
As of Monday, September 23rd, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

1978 and older vehicles with 6 and 8 cylinders, as listed in E.O. attachment

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-85
  • Executive Order 85 / D85
  • ARB # D-85
  • Executive Order No: D-85
  • C.A.R.B. No. D-85
  • Resolution D-85
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-85 PDF

D-85 Document:

                                                           (Page 1 of 2)

                          State of California
                          AIR RESQURCES BOARD

                          EXECUTIVE ORDER D—85
              Relating to Exemptions under Section 27156
                          of the Vehicle Code

                     "AES—3000 FUEL SAVING 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 RESOLVED: That the installation of the "AES—3000 Fuel
Saving Device" manufactured and sold by Engineering Systems Corporation,
2975 Scott Blvd., Suite 100, Santa Clara, California 95050 has been
found to not reduce the effectiveness of required motor vehicle poliution
control devices and, therefore, is exempt from the prohibitions of
Section 27156 of the Vehicle Code for 6 or 8 cylinder, 1978 and older
model cars as per the enclosed attachment.

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

Changes made to the design or operating conditions of the device, as
exempted by the Air Resources Board, that adversely affect the per—
formance of a vehicle‘s polilution 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 lTisted 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.


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.

 "AES—3000 FUEL SAVING DEVICE"                        (Page 2 of 2)

Section 17500 of the Business and Professions Code makes untrue or mis—
leading 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

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

Executed at El Monte, California, this   42    day of October, 1978.

                                  _4 cJm
                                   G. C. Hass, Chief
                                   Vehicle Emissions Control Division

                              Air Resources Board

Attachment to Executive Order D—85

Manufacturer:       Engingering Systems Corporation

       List of Applicable Cars

       All General Motors models and makes — All 6 and 8 cylinder cars

       All American Motors models and makes — All 6 and 8 cylinder
       cars 1966—1978.

       All Chrysler Corporation models and makes — All 6 and 8 cylinder
       cars 1966—1975. (Note: All 6 and 8 cylinder cars 1976—1978,
       without the optional "Lean Burn System.")

       All Ford Corporation — All 6 and 8 cylinder cars 1966—1975.
       {Note: All 6 and 8 cylinder cars 1976—1978 without the optional
       "Variable Venturi" carburetor.)

       BMW — All 6 cylinder 1970—1978.

       Capri — All 6 cylinder 1972—1978.

       Datsun — All 6 cylinder 1971—1978.

       Jensen — All 8 cylinder 1974—1975.

       Mazda — All rotary engines 1970—1978.

10.    Mercedes—Benz — All 6 and 8 cylinder 1968—1975.

11.    Toyota — All 6 cylinder 1966—1978.

 12.   Volvo — All 6 cylinder 1966—1974.

                          Air Resources Board

Attachment to Executive Order D—85

Manufacturer:   Engingering Systems Corporation

     List of Nonapplicable Cars

     Chrysler Motors — Exclude all Chrysler Corporation products:
     Chrysler, Dodge, Plymouth 1976—1978 with the Optional Lean Burn
     System. Any Chrysler product with lean burn system has the words
     "Lean Burn®" on the small computer box attached to the side of the
     air cleaner.

     Ford Motors — Exclude all 1976—1978 Ford products which have the
     Optional Variable Venturi System. The Variable YVenturi carburetor
     has black sliding floats when looking from the top downward through
     the carburetor.

     Exclude all:   Jaguars, Triumphs, Porsches, and Peugeots.

     Exclude any Pre—1970 BMW or Mazda automobiles.

     Exclude any post—1974 Volvo.

     Exclude all Fuel Injection cars.

     Exclude all 4—cylinder cars.

     Exclude all diesel engines.

                             State of California
                             AIR RESOURCES BOARD

                                Staff Report

                               October 5, 1978


       This staff report evaluates the "AES—3000 Fuel Saving Device"

       manufacturered and marketed by Engineering Systems Corporation,

       2975 Scott Blvd., Suite 100. Santa Clara, California 95050, for

       compliance with the requirements of Section 27156 of the Calif—

       ornia Vehicle Code.   Starting with a brief introduction to the

       device, the report deseribes its operation, the benefit claims

       the applicant makes, the test data submitted by the applicant,

       the confirmatory tests done on the device at Air Resources Board‘s

       Haagen—Smit Laboratory and finally concludes with recommendations,

       to enable the Exeeutive Officer to arrive at a decision.

II..   Introduction:

       The "AES—3000" is a typical intake manifold vacuum modulated air
       bleed device which allows an extremely smalil proportion of air to

       enter the engine through the PCV system.      This air bleed is sup—

       posed to enter only during high and low manifold vacuum éonditions,

       thereby helping to save a little fuel.      A built—in electronic

       timing device prevents the device from operation during engine

       starting and warm up periods.   A small air filter ensures the

       cleanliness of the auxiliary air bleed.

IIi. System Description and Function:

    The "AES—3000" consists of a diaphragm which is to be connected

    to manifold vacuum.     Changes in manifold vacuum causes a small

    piston, contacting the diaphragm, to reciprocate.     A pivotted

     lever with a contact point picks up the piston motion.    The contact

    point moves between 2 contact poles, making contact with them at

    the high and Tow vacuum conditions.     A solenoid energized by 12

     volt d.c. from engine ignition system is in series with the contact

     lever/contact point circuit.

    The circuit is complete during the contacting time period.     When

     the solenoid gets energized, it magnetizes a pole, located in its

     core, which in turn pulls a soft iron clapper.    When the clapper

     is magnetically pulled from its seat, an annular space is created,

    which allows atmospheric air into PCV line.     When the ignition is

     turned off, the solenoid is not energized.    Consequently, the clapper

     rests on the PCV air bleed inlet, keeping it closed thereby pre—

     venting the PCV line from contamination during the time when the car

     is not in operation.   A delay circuit prevents the solenoid from

     being energized as soon as the ignition is turned on.    This will

    not allow any air bleed during starting and warm up periods and

    so may not interfere with the engine starting characteristics.

    Since the clapper is magnetically pulled from its rest position

    against its own weight, it is imperative that the device be

     installed in an upright position.

      The applicant plans to market the device through franchised dealers,

      who will install the device on a car.      After installation, if the

      electrical components do not function, the chances are that this

      will go unnoticed.    This is due to small amount of air bleed.

IV.   System Evaluation:

      A.   Applicant‘s Data

           The applicant submitted a CVS—75 cold start emission and fuel

           consumption data.    The tests were done at Olson Engineering

           on a 1978 Camaro, with 305 CID engine.         The car odometer read

           only 243 miles at the commencement of tests.          The outcome of

           the tests are summarized in the tables given below:

           1978 Camaro with 305 CID, V8 engine and auto transmission.

           CVS—75 back to back test.

                                              grams per mile
                                       HC          CO           NOx :     MPG

           baseline                    .45         5.17         0.97      12.77

           with AES 3000             0. 31         5.47         1.02      13. 32

           percent change              —31       +5.8          +5.2     + 4.3

           baseline                  0. 05         ..00         1.18      19.19

           with AES 3000               0.03       —0.01         1.23      19.76

           percent change           —.40            —          +4 .2    + 3.0

           1978 Cal. std.           0.41           9.0          1.5         —

B.   ARB Flow Test

     A bench flow test was done to find out the amount of auxiliary

     air allowed into the PCV line, at various manifold vacuum,

     applied to the sensing diaphragm.    To have an idea of product

     variation, the tests were done on 2 separate devices.     The

     first device showed a maximum     air bleed of 0.02 SCFM at 8 inches

     of Hg vacuum.   The second device showed a maximum air bleed of

     0.05 SCFM around 9 inches and 24 inches of Hg vacuum.     This

     shows a 250% product variation.

Conclusion. and Recommendation

The flow through the device is very low, about 1.5% of a typical

PCV flow.   The staff is of the opinion, based on similar air bleed

devices tested in our laboratory in the past, that the installation

of the device will have little effect on emissions.     Even though the

CVS—75 test data show an increase of 5.2% on NO and 5.8% on CO and

4.3% in MPG these couldn‘t be regarded as representative figures,

as the car had only 243 miles at the commencement of tests and such

variations of emissions and fuel consumption characteristics are

common during the break—in period.

The staff also feels that with such a small air flow, the instal—

lation of the device will have little effect on the improvement

of fuel economy.

The staff favors the approval of exemption of the device from the

provisions of the Vehicle Code 27156.   Executive Order D—85 with

its attachment giving list of applicable and nonapplicable models

and makes, has been prepared for this device.

Document Created: 2005-09-01 12:44:47
Document Modified: 2005-09-01 12:44:47

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