Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on May 9, 1986.
As of Sunday, December 16th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
N-8A-HD1986 and older Chevrolet/GMC 454 CID heavy-duty gasoline enginesCarburetor bowl vent hose disconnected and plugged at carbon canister, OEM air cleaner and heated air intake are replaced with Airsensor air cleaner, and automatic choke and carburetor are removed.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-163
  • Executive Order 163 / D163
  • ARB # D-163
  • Executive Order No: D-163
  • C.A.R.B. No. D-163
  • Resolution D-163
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-163 PDF

D-163 Document:



                                                                     {Page 1 of 2)

                          .          — State of California
                                       AIR RESOURCES BOARD

                              — EXECUTIVE ORDER D—163
                     Relating to Exemptions under Section 27156
                                 of the Vehicle Code

                                      AIRSENSORS, IN




                                                          f'f‘lC")
                               MODEL NCQ. N—8A—HD EL ETRONTIC
                                   FUEL INJECTION SYYSTEM

Pursuant to the authority vested in the Air Resources Board by Section 27156
of the VYehicle 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 ORDEREDY AND RESOLVED: That the installation of the Airsensors Mode] No.
 —SA—HD electronic fuel injection system manufactured by Airsensors, Inc. has
been found not to reduce the effectiveness of required motor vehicle pellution
control devices and, therefore, is exempt from the prohibitions of Section
27156 of the V¥ehicle Code for 1986 and older Chevrolet/GMC 454 CID heavy—duty
gasoline engines.

The following modifications to the original equipment em1c310n> control system
are permitted:

    1)      The carburetor bow! vent hose is disconnected from the carbon °
            canister and that port on the carbon canister must be plugged.

    2)       The original air cleaner and heated air intake are replaced with the
            Airsensors air cleaner.

    3)      The vacuum hose routing is changed as specified in the device
            installation instructions.

    4)      The automatic choke system is removed with the original equipment
            carburetor .

This Exscutive Order is vai id\ provided that instal ]ataon instructions for this
device will not recommend tundi g
                                n
                                -A
                                     the vehicle to speci fications different from
those submitted by the deyvi ce «nan ufacturer .

Changes made to the design or operating conditions of the device, as exempted
by the Air Resources Board, that adversely affect the 39rformaflc~ of a
venhicle‘s pollution control system shall invalidate this Executive Order.

   keting of this device using an identification other than that shown in this
   cutive Order or marketing of this device for an application other than
   se listed in this Executive Order snallobe orohibited unless prior approval
is obtained from the A1r Resources Board.  Examption of a kit shall not be
construed          exemption    to seli, offers for sale, or advertisse any comporent
of a kit                3&&3 device.                  |


AIRSENSORS, INC.                                    EXECUTIVE ORDER D—163
                                                    (Page 2 of 2?)



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 8BOARD OF ANY
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF THE AIRSENSORS MODEL NO. N—B8A—HD ELECTRONIC FUEL INJECTICN SYSTEM.

No claim of any kind, such as "Approved by Air Resources Board" may be made
with respect to the act10n taken herein in any advertising or other oral or
written communication.

Section 17500 of the Business and Professions Code makes untrue or misleading
advertising unlawful, and Section 17534makes 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, repressont, any device as a motor vehicle pollution control device
    for use on amy used motor vehicle unless that device has been certified by
    thoe 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 of the conditions of this fExecutive Order will be
submitted to the Attorney General of California for such action as he deems
advisable.


Executed at El Monte, California, this     é| __ day of May, 198



                                           F MS
                                         »M%
                                         K. D. Drachand, Chief
                                         Mobite Source Diviston


                       State of California
                       AIR RESOURCES BOARD




                    EVALUATION OF THE AIRSENSORS
                 MODEL NO. N—8A—HD ELECTRONIC FUEL
            INJECTION SYSTEM FOR USE ON 1986 AND OLDER
             CHEVROLET/GMC 454 CID HEAVY—DUTY ENGINES
FOR EXEMPTION FROM THE PROHIBITIONS QOF VEKHICLE CODE SECTION 27156
             IN ACCORDANCE WITH SECTION 2222, TITLE 13
               OF THE CALIFORNIA ADMINISTRATIVE CODE




                            May, 1986


                       EVALUATION OF THE AIRSENSORS
                    MODEL NO. N—8A—HD ELECTRONIC FUEL
               INJECTION SYSTEM FOR USE ON 1986 AND OLDER
                CHEVROLET/GMC 454 CID HEAVY—DUTY ENGINES
   FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156
                IN ACCORDANCE WITH SECTION 2222, TITLE 13
                  OF THE CALIFORNIA ADMINISTRATIVE CODE




                                   by
                         Mobile Source Division
                           State of California
                           AIR RESOURCES BOARD
                           9528 Telstar Avenue
                           El Monte, CA 91731



(This report has been reviewed by the staff of the California Air
Resources Board and approved for publication. Approval does not signify
that the contents necessarily reflect the views and policies of the Air
Resources Board, nor does mention of trade names or commercial products
constitute endorsement or recommendation for use.)


                                           SUMMARY
/"‘@5\‘




                Airsensors, Inc., of Seattle, Washington has applied for exemption

          of their electronically controlled fuel injection system Model No.

          N—8A—HD for use on 1986 and older Chevrolet/GMC 454 CID heavy—duty

          engines.

                Exhaust emissions test data show no significant increases in

          emissions when the N—8A—HD fuel injection system is installed on the

          engines described above.

                The applicant has submitted all the required information and based

          on the submitted emission data the staff recommends that the exemption be

          granted as ‘requested.


                                         CONTENTS
2y*




                                                    Page Number

      SUMMARY                                            1

      CONTENTS                                          11

      1.     INTROBUCTION                                1

      11.    CONCLUSIONS

      III.      RECOMMENDATIONS

      IV.    DEVICE DESCRIPTION

      V.     DEVICE_EVALUATION

      VI.    DISCUSSION

      APPENDIX

             Airsensors Technical Manual               A—1
             9—Mode Simulation Test Program            A—2
             Turbocharger Test Program     °           A—3
             Original Test Data                        A—4A, A—4B
             Prototype Identification Label          — A—5
             Advertising Material                      A—6




                                               11


                              State of California
                              AIR RESOURCES BOARD

                          EVALUATION OF THE AIRSENSORS
                       MODEL NOQ. N—8A—HD ELECTRONIC FUEL
                  INJECTION SYSTEM FOR USE ON 1986 AND OLDER
                   CHEVROLET/GMC 454 CID HEAVY—DUTY ENGINES
      FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156
                   IN ACCORDANCE WITH SECTION 2222, TITLE 13
                     OF THE CALIFORNIA ADMINISTRATIVE CODE

I.       INTRODUCTION

         Airsensors, Inc., of Seattle, Washington, 98188, has applied for an

exemption for their electronically controlled fuel injection sytem Mode]l

No. N—8A—HD for use on 1986 and older Chevrolet/GMC 454 CID heavy—duty

engines originally equipped with a Rochester 4—barrel carburetor.     The

system measures the mass air flow, engine temperature, engine speed and

engine timing to electronically compute and control the injected fuel

flow to maintain pre—determined air—fuel ratios depending on the engine

lToad.

II.      CONCLUSION

         The applicant has submitted all the required information and based

on the submitted exhaust emissions test data, the staff concludes that

the replacement of the original equipment carburetor with the Airsensors

mode? No. N—8A—HD electronic fuel injection system will not adversely

affect emissions.

III. RECOMMENDATION
         The staff recommends that the exemption be granted as requested and

that Exécutive Order No. D—163 be issued.
IV.      DEVICE DESCRIPTION

         The Airsensors model No. N—8A—HD electronic fuel injection system

consists of a four—injector throttle body, which replaces the original


             equipment manufacture (OEM) carburetor, a high—pressure fuel pump, fuel
Lnitte,hm




             filters, a fuel pressure regulator, a new air filter, a mass air flow

             sensor, an engine temperature sensor, engine timing sensors, a fast—idle

             air—bleed and a system computer which controls the injectors flow rate

             based on the signals it receives from the various sensors.

                   The computer uses the mass air flow meter signal to provide the

            — correct quantity of fuel to maintain a proper air—fuel ratio.   The

             computer uses a tachometer signal to control the frequency of the

             injection and an 1nduciive pick—up to time the four injectors to match

             the firing order of the engine.   The computer uses the signal from the

             temperature sensor to provide additional fuel flow during cold engine

             operation and the air—bleed to provide a fast idle, to prevent stalling,

             during cold engine operation.

                   Should the air flow signal be lost due to a malfunction, the

             computer has a "drive—home" mode which causes the fuel flow to be

             proportional to engine speed only.   This will prevent roadéide stranding

             of the vehicle and occupants.

                   The Airsensors model N—8A—HD system will be sold on a instailed

             basis by qualified and trained installers using thé technical information

             supplied with each kit ({see Appendix 1).

             V.    DEVICE EVALUATION

                    In order to demonstrate compliance with the requirements for the

             exemption the applicant was required to perform back—to—back 9—mode

             heavy—duty engine dynomometer tests or a similar chassis dynomometer test

             using the "Test Program for Simulating 9 Mode Heavy—Duty Engine

             Dynamometer Testing on a Chassis Dynomometer for Comparative Exhaust


Emissions" (see Appendix 2).    Prior to receiving the Air Resources

 Board‘s (ARB) test instruction letter requiring the 9 Mode testing the

 applicant had assumed that the "Test Program for Add—On Turbocharger kits

 for Heavy—Duty Engines" ({see Appendix 3) would be acceptable and

 therefore performed conparative emissions tests using a 1985 Fleetwood

 motor home éequipped with a Chevrolet/GMC 454 CID heavy—duty gasoline

_engine.   After receiving the ARB letter requiring the 9 Mode testing the

 applicant attempted to find a laboratory capable of performing either the

 engine dynomometer test or the chassis dynomnemeter test.   The closest

 independent emission laboratory capable of performing either test is

 Southwest Research Institute in San Antonio, Texas.     Because of the

 distance involved and the financial burden it would impose on the

 applicant, the ARB decided to perform the 9 Mode tests at the Haagen—Smit

 Laboratory on the heavy—duty chassis dynanometer.

       The testing was scheduled for February 26, 1986, however at this

 time the heavy—duty chassis dynometer was not functioning properly, so

 the testing was postponed until March 6, 1986.   The testing was again

 postponed until March 13, 1986, because the dynamometer was used for

 emissions testing of other ARB priority programs.     On March 14, 1986, the

 planned ARB testing was cancelled and it was decided to base the

 evaluation on the applicants data only ({see Appendix 4).    The results of

 these tests are summarized in Table 1.


                                                  Table 1
                                             Exhaust Emissions
                                       Airsensors N—S8A—HD Electronic
horulifonnne




                                     Fuel Injection for GMC Heavy Duty
                                          454 CID Gasoline Engines
     \




                            Test vehicle:   1985 Fleetwood Motor Home

                     MODE                   HC {ppm)             CO(%)            NOx {ppm)

               Baseline Idle                 10                  1.05                60
               Device Idle                   10                  1.00                50
               Percent Change                0%                  — 5%               —16%

               Baseline 20 mph                5                  0.41               250
               Device 20 mph                  5                  0.40               200
               Percent Change                0%                  — 2%               ~20%

               Baseline 30 mph                5                  0. 33              480
               Device 30 mph                  2                  0.18               460
               Percent Change                —60%                —45%               —4%

               Baseline 40 mph               15                  0.20               340
               Device 40 mph                  0                  0.23               220
               Percent Change                —100%               +15%               —35%

               Baseline 50 mph              15                   0. 18              780
               Device 50 mph                  0                  0.15               900
               Percent Change                —100%               —17%               +15%

               Baseline 55 mph               15                  0. 15              850
               Device 55 mph                  0                  0.05               700
               Percent Change                —100%               —67%               —18%

               VI.    BISCUSSION

                      The applicant‘s submitted data show no increase in hydrocarbon

               emissions and no significant increases in carbon monoxide or nitrogen

               oxide emissions from the test vehicle.     The system is complete and when

               installed on the 1986 and older Chevrolet/6MC Heavy—duty 454 CID engines

               it replaces the OEM carburetor with the following modifications to the
               OEM emission control system:


           1)   The carburetor bow! vent hose is disconnected from the carbon

                canister and that port on the carbon canister must be plugged.

           2)   The original air cleaner and heated air intake are replaced with the

                Airsensors air cleaner.

           3)   The vacuum hose fouting is changed as specified in the device

                installation instructions.

           4)   The automatic choke system is removed with the original equipment

                carburetor.

           The facsimile of the underhood system identification label was submitted

     and displays all the required information (see Appendix 5).

           Airsensors intends to market this system through qualified service

     facilities on an installed basis.    Installers will be trained by Airsensors to

     assure proper installation of the system.   A typical advertisement used for the

     marketing of this system is included in Appendix 6.   Airsensors has fulfilled
en




     the requirements for this exemption.



Document Created: 2005-09-01 12:41:58
Document Modified: 2005-09-01 12:41:58

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