Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on November 17, 1983.
As of Wednesday, January 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
X-11984 and older vehicles, EXCEPT: (1) Vehicles with closed-loop carburetion (2) Fuel injected vehicles (3) Vehicles with unconventional engines (4) Turbocharged vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-143
  • Executive Order 143 / D143
  • ARB # D-143
  • Executive Order No: D-143
  • C.A.R.B. No. D-143
  • Resolution D-143
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-143 PDF

D-143 Document:



                                                               (Page 1 of 2}

                               State of California
                               AIR RESOURCES BOARD

                               EXECUTIVE ORDER D—143
                  Relating to Exemptions under Section 27156
                                of the Vehicle Code

                                     OHG, INC.
                           VAPORIZER/REGULATOR MODEL X—1


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 I1S ORDERED AND RESOLVED:   That the installation of the OHG, Inc.
vaporizer/regulator model "X—1" manufactured by OHG, Inc., of 10065 A
Greenleaf Avenue, Santa Fe Springs, California 90670, to be used as a
substitute for Impco Carburetion Inc.‘s "E" or "L" models which are components
of certified Impco Carburetion, Inc.‘s gaseous fuel conversion systems, has
been found not to reduce the effectiveness of required motor vehicle pollution
control devices and, therefore, is exenmpt from the prohibitions of Section
27156 of the Vehicle Code for 1984 and older model—year vehicles, excluding:

    1.   vehicles equipped with closed—loop carburstion (compuéer
         controiled carburetors) systems;                  ‘

    2.    vehicles equipped with fual injected engines;

    3.    vehicles equipped with uncornventional engines such as stratified
         charge or rotary;

    4.   vehicles equipped with turbochargers.

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.

Chénges 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 polliution control system shall invalidate this Executive
Order.

Marketing of this device using an fdentification other than that shown in
this Executive Order or marketing of this device for an application other
than those Tisted in this Executive Order shall be prohibited unless prior
approval is obtained from the Air Resources Board. Exemption of a kit
shall not be construed as an exenption to sell, offér for sale, or
advertise any component of a kit as an individual device.


OHG, INC.                                           EXECUTIVE ORDER D—143
VAPORIZER/REGULATOR MODEL X—1                       (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 BOARD OF ANY
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION SENEFITS OR ANY ALLEGED
BENEFITS OF THE OKG, INC. VAPORIZER/REGULATOR MODEL "X—1".

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 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:

    "43§44.    (a)   No person shall install, sé1l, 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 sontrol devwice as a certified device
    which, in fact, is not a certified device. Any wvislation of this
    subdivision is a misdemeanor."                       j

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      /2   _ day of November, 1983.


                                         Wtz
                                         K. D. Drachand, Chief
                                         Mobile Source Bivision


                           STATE OF CALIFORNIA

                           AIR RESOURCES BOARD




EVALUATION OF OHG, INC.‘S VAPORIZER/REGULATOR MODEL X—] FOR EXEMPTION FROM
THE PROHIBITIONS IN VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION
2222, TITLE 13, OF THE CALIFORNIA ADMINISTRATIVE CODE




                            NOVEMBER 15, 1983


                                            Issue Date:    November 15, 1983




  EVALUATION OF OHG, INC.‘S VAPORIZER/REGULATOR MODEL X~1 FOR EXEMPTION FROM
— THE PROHIBITIONS IN VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION
  2222, TITLE 13, OF THE CALIFORNIA ADMINISTRATIVE CODE




                                     by
                           MOBILE SOURCE DIVISION
                             State of CaTifornia
                             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



        OHG, Inc. has requested approval of their gaseous fuel vaporizer/

regulator model "X—1" as a substitute for Impco Carburetion Inc.‘s "E" or

‘"L“ models which are equivalent components of certified Impco Carburetion,
 Inc.‘s gaseous fuel conversion systems.

        OHG has submitted a pictorial and written comparison of both OHG and

Impco vaporizers/requlators.     OHG has also submitted comparative (vehicle
converted to operate on gaseous fuel with Impco‘s "L" vaporizer/regulator

versus OHG‘s "X—1" vaporizer/regulator) hot—start 505 T—bag emission test
data.     The tests were performed using a 1980 Ford Fairmont vehicle powered

by a 200 CID engine.

        Based on the staff‘s engineering evaluation (comparison of OHG‘s and
Impco‘s vaporizers/regulators) and the test data submitted by OHG, the

staff has concluded that OHG‘s vaporizer/regulator, in substitution for

Impco‘s "E" or "L" vaporizer/regulator, will not adversely affect exhaust

emissions.                                    ‘

        The staff recommends that OHG‘s vaporizer/regulator model "X—1" be

certified, thus allowing substitution of the "X—1" model for the Impco "E"
or "L" models.    The staff also recommends that Executive Order D—143 be

issued.


                                    CONTENTS

                                                       Page Number

SUMMARY                                                    i
CONTENTS                                                  i1
I.    INTRODUCTION                                         1
II.   CONCLUSION                                           1
III. RECOMMENDATIONS                                       1
IV.   VAPORIZER/REGULATOR DESCRIPTION AND COMPARISON       2
V.    EVALUATION                                           2
VI.   DISCUSSION                                           3
APPENDICES                                                 5
      TEST RESULTS                                         6
      VAPORTIZERS/REGULATORS _COMPARISON                   7




                                      11


 EVALUATION OF OHG, INC.‘S VAPORIZER/REGULATOR MODEL X—1 FOR EXEMPTION FROM THE
 PROHIBITIONS IN VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222,
 TITLE 13, OF THE CALIFORNIA ADMINISTRATIVE CODE



 I.      INTRODUCTION

         OHG, Inc., of 10065 A Greenleaf Avenue, Santa Fe Springs, California

 90670, has requested approval of their gaseous fuel vaporizer/regulator model

' "X—1" as a substitute for Impco Carburetion, Inc.‘s "E" or "L" models which

 are components of certified Impco Carburetion, Inc.‘s gaseous fuel conversion

 systems.

         OHG has submitted a pictorial and written comparison of both OHG and
 Impco vaporizers/regultors.    OKG has also submitted comparative (vehicle
 converted to operate on gaseous fuel with Impco‘s "L" vaporizer/regulator

 versus OHG‘s "X—1" vaporizer/regulator) hot—start 505 T—bag emission test
 data.    The tests were performed under contract by Olson Engineering, Inc. in

 Huntington Beach, California, using a 1980 Ford Fairmont vehicle powered by a
 200 CID engine.

 II.     CONCLUSION

         Based on the staff‘s engiheering evaluation {comparison of OHG‘s and

 Impco‘s vaporizers/regulators) and the test data submitted by OHG, the staff

 has concluded that OHG‘s vaporizer/regulator, in substitution for Impco‘s "E"

 or "L" vaporizer/regulator, will not adversely affect exhaust emissions.

 III.    RECOMMENDATIONS

         The staff recommends that OHG‘s vaporizer/regulator model "X—1" be

 exempted, thus allowing substitution of the "X—1" model for the Impco "E" or
 "L" models for 1984 and older model—year vehicles, excluding:


             1.      vehicles equipped with closed—loop carburetion {computer
                     controlled caburetors) systems;

             2.      vehicles equipped with fuel injected engines;

             3.      vehicles equipped with unconventional engines such as

                     stratified charge or rotary;

             4.      vehicles equipped with turbochargers.

 The staff also recommends that Executive Order D—143 be issued.

  IV.   VAPORIZER/REGULATOR DESCRIPTION AND COMPARISON

        The OHG vaporizer/regulator model "X—1" is designed to replace Impco‘s

  "E" or "L" models during installation of certified Impco gaseous fuel
 conversion systems.

        Both, OHG and Impco, vaporizers/regulators reduce the lTiquefied fuel

 pressure from the tank to 1.5 psi in a first stage of regulation, and require

 a 1.5" H,0 vacuum to draw the fuel from the regulator to the carburetor.
 However, according to OHG, the "X—1" vaporizer/regulator is designed for
  improved vaporization of the fuel for smooth operation and start up in

 extremes of low and high temperatures.

        For a pictorial and written comparison (internal and external) of both

 OHG and Impco vaporizers/regulators see Appendices.
 V.     EVALUATION

        The staff performed an engineering evaluation of the OHG

 vaporizer/regulator.     Evaluation consisted of reviewing and comparing the

 design and operational characteristics of both OHG and Impco

 vaporizers/requlators.    The regulators reduce the pressure of the fuel to the
_ same lTevel and allow the vaporized fuel to be drawn into the carburetor under
 the same degree of negative pressure.    Therefore, exactly the same amount of


fuel will be delivered through the "X—1" to the engine as the "L" regulator.

The improved heat—transfer design of the "X—1" vaporizer enhances engine
start—up in cold weather, but at the same time, tends to increase the
temperature of the fuel.     Hot start emissions tests were, therefore, performed

to check whether it, high fuel temperature, will have any adverse effect on

emissions.
         A California—certified 1980 Ford Fairmont powered by a 200 CID engine

was used for the emissions impact evaluation.     Testing consisted of

comparative {vehicle converted to operate or gaseous fuel with Impco‘s "L"

vaporizer/regulator versus OHG‘s "X—1" vaporizer/regulator) hot—start 505
T—bag emission tests.     A summary of the test results is shown in the

Appendices.

VI.      DISCUSSION
         Impco previously claimed that their model "L" vaporizer/regulator has

the same performance characteristics, including discharge pressure/rate and

heat exchange capacity, as the "E" model.     The components of these two Impco

vaporizers/regulators are somewhat different in design; however, they operate
in the same manner and meet the same performance requirements.     Impco

submitted, in 1982, comparative emission test data to demonstrate the

equivalency of the two vaporizers/regulators.

         The mode] "L" vaporizer/regulator has, therefore, been approved as an
alternate for the E model (CARB Executive Order B—4—8A, dated December 15,

1982).
         OHG, Inc. specifically stated in its application that the "X—1"

converter is not a susbtitution for automobiles with feed—back controls.


      Based on the fact that both Impco and OKHG vaporizers/regulators have

jdentical first and second stage regulation pressures and based on the

comparative emission test results, the staff concludes that their performance
and functions are the same and the "X—1" vaporizer/regulator may be used in

place of the Impco "E" or "L" models.


APPENDICES


                                     Table



                      Comparison of OHG X—1 Model Versus

                      Impco L Model Vaporizer/Regulators
                         1980 Ford Fairmont — 200 CID
                             Hot—Start 505 Tests




                                                            Fue!l

                              Exhaust Emissions {(gm/mi)   Economy

Vaporizer/Regulator            HC            C0_   NOx      (mpg)



Impco L                       0.24           1.2    1.9     15.70



OHG X—1                      0.21            0.1    2.1     15.89


                       OHG, INC. MODEL X—1
                  VAPORIZER—REGULATOR CCONVERTER)
                 REPLACEMENT FOR IMPCO MODELS L AND E

RICHARD BAVERSTOCK, VICE PRESIDENT ENGINEERING FOR OHG,INC.,
IN HIS PREVIOUS 25 YEAR EMPLOYMENT BY IMPCO CARBURETION INC.,
DESIGNED THE IMPCO MODELS E, J AND L CONVERTERS MARKETED BY
THAT FIRM AND ACCEPTED BY THE CALIFORNIA AIR RESOURCES BOARD
THROUGH 1983.

AS A LOGICAL PROGRESSION AS A FIRST STEP IN PRODUCING AN ADVAN—
CED CARBURETION SYSTEM FOR OHG,INC., MR. BAVERSTOCK DESIGNED
THE X—1 MODEL TO BE COMPATIBLE WITH IMPCO CARBURETORS, ALSO
DESIGNED IN THEIR ENTIRETY BY MR. BAVERSTOCK. THE DESIGN OF THE
CARBURETORS UTILIZES A CONSTANT DEPRESSION (AIR VALVE) TYPE OF
CONSTRUCTION, WHICH, WITH INNOVATIONS, WILL 8E THE BASIS OF
OHG, INC. CARBURETOR DESIGNS AS WELL.

AS MAY BE SEEN IN THE PICTURES COMPARING THE IMPCO MODEL L AND
THE OHG, INC. MODEL X—1, THE BASIC DESIGN IS SIMILAR IN THAT
EACH RECEIVES LIQUID FUEL FROM THE SUPPLY TANK AT PROX. 180 PSI.

THIS PRESSURE IS REDUCED TG§pe®@ (40" H20) IN A FIRST STAGE
OF REGULATION (AS SHOWN ON GAUGE # 1). UPON RELEASE FROM THE
PRIMARY REGULATOR, THE LIQUID FUEL IS PROPELLED AGAINST THE
HEATED WALLS OF THE VAPORIZING MAZE WHERE THE FUEL IS CONVERTED
TO A DRY GAS AND HEATED TO APPROXIMATELY 80° F AT FULL RATED
CAPACITY OF 300 HP FOR THE X—1.                     R

THE FUEL FLOW IS STOPPED AT A SECONDAR          ATOR VALVE WHEN THE
ENGINE IS NOT IN USE. A VACUUM                  5 REQUIRED TO DRAW
FUEL FROM THE VAPORIZER REGULAT    CSHOWN    AT GAUGE #2)
THESE PRESSURES ARE COMMON TO ALL BAVERSTOCK DESIGNED VAPORIZER—
REGULATORS MANUFACTURED IN THE PAST TWENTY FIVE YEARS.

THERE ARE DESIGN DIFFERENCES IN THE X—1 FOR WHICH PATENTS ARE
BEING REQUESTED. THESE ARE DESIGNED TO IMPROVE COLD WEATHER (—30° )
VAPORIZATION, MORE ACCURATE FIRST STAGE REGULATION AND ECONOMICAL
MEANS OF MANUFACTURE. THESE DIFFERENCES WOULD NOT AFFECT EMISSIONS
IN EVERY DAY USE, BUT SHOULD LESSEN EMISSIONS IN UNUSUALLY COLD
CONDITIONS.

OHG, INC. CATEGORICALLY ASSERTS THAT EMISSIONS WILL NOT BE IN—
CREASED BY SUBSTITUTION OF THE X—1 FOR ANY IMPCO VAPORIZER—
REGULATOR USED WITH THE CONSTANT DEPRESSION (AIR VALVE) DESIGN
OF CARBURETORS.

OHG, INC. DOES NOT RECOMMEND THE USE OF IT‘S VAPORIZER—REGULATOR
WITH ELECTRONIC FEED—BACK APPLICATIONS IN THEIR PRESENT FORM.
IT‘S PLANNED MARKET IS FOR USE ON LIGHT, MEDIUM AND HEAVY DUTY
TRUCKS. OHG, INC. IS RECOMMENDING AGAINST PASSENGER CAR INSTALL—
ATIONS BECAUSE OF MINIMAL UNDERKHOOD  ROOM AND HIGH LIABILITY RISK.


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PAGE 4
#7
     COMPLETED ASSEMBLIES OF X—1 AND L VAPORIZER—REGULATORS
     NOTE REDUCED BULK OF X—1 ASSEMBLED FOR EASE OF   INSTALLATION.
#8
     PRESSURE GAUGES WITH ENGINE RUNNING
             GAVGE #1                            GAVGE #2
     SHOWS PRECISE 40" H20 PRIMARY         SHOWS —1.5" H20 (CVACUUM)
     REGULATOR PRESSURE W/ENGINE RUNNING   REQUIRED TO DRAW FUEL FROM
                                           THE X—1 VAPORIZER—REGULATOR
                   3



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

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