Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on April 10, 1996.
As of Monday, October 21st, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
C8551979 and older model-year Cummins 855 c.i., 6-cylinder, turbocharged and aftercooled, diesel powered engines.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-386
  • Executive Order 386 / D386
  • ARB # D-386
  • Executive Order No: D-386
  • C.A.R.B. No. D-386
  • Resolution D-386
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-386 PDF

D-386 Document:



                                                   (Page 1 of 2)


                             State of California
                             AIR_RESOURCES BOARD

                           EXECUTIVE ORDER D—386
                 Relating to Exemptions Under Section 27156
                            of the Vehicle Code

                        AIRESQURCE TECHNOLOGiES, INC.
                        C855 REPLACEMENT TURBOCHARGER

Pursuant to the authority vested in the Air Resources Board (ARB) 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—9;

IT IS ORDERED AND RESOLVED: That the installation of the C855 Replacement
Turbocharger, manufactured by AiResource Technologies, Inc. of 955 Jones
Road, Yuba City, California 95991, has been found not to reduce the
effectiveness of the applicable vehicle pollution control system, and
therefore, the C855 Replacement Turbocharger is exempt from the prohibitions
of Section 27156 of the California Vehicle Code for installation.on 1979 and
older model—year Cummins Engine Company, Inc. 855 cubic inch displacement,
6—cylinder, turbocharged and aftercooled, diesel—powered engines.

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

Changes made to the design or operating conditions of the device, as exempt
by the ARB, which adversely affect the performance of a vehicle‘s poliution
control system shall invalidate this Executive Order.

Marketing of the device using an identification other than that shown in
this Executive Order or marketing of the device for an application other
than those listed in this Executive Order shall be prohibited unless prior
approval is obtained from the ARB. Exemption of the device shall not be
construed as exemption to sell, offer for sale, or advertise any component
of the kit as an individual device.

This Executive Order does not constitute any opinion as to the effect the
use of the 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 AIRESOURCE TECHNOLOGIES, INC.‘S C855 REPLACEMENT TURBOCHARGER.
No claim of any kind, such as "Approved by the Air Resources Board", may be
made with respect to the action taken herein in any advertising or other
oral or written communication.

Violation of any of the above conditions shall be grounds for revocation of
this Executive Order.   The Executive Order may be revoked only after a ten—


AIRESOURCE TECHNOLOGIES, INC.                         EXECUTIVE ORDER D—386
C855 REPLACEMENT TURBOCHARGER                         (Page 2 of 2)


day written notice of intention to revoke the Executive Order, in which
period the holder of the Executive Order may request in writing a hearing to
contest the proposed revocation. If a hearing is requested, it shall be
held within ten days of receipt of the request and the Executive Order may
not be revoked until a determination after the hearing that grounds for
revocation exist.
                                         —,
Executed at El Monte, California, this    /C7/faay of April 1996.
                                  \             noq

                                   NLo bEovaabihe _ a
                                          . B. Summerfield
                                          ssistant Division Chtef
                                         Mobile Source Division


                    State of California
                    AIR RESOURCES BOARD




        EVALUATION OF AIRESOURCE TECHNOLOGIES, INC.*S
                C855 REPLACEMENT TURBOCHARGER
     FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE
                CALIFORNIA CODE OF REGULATIONS




                         April 1996


                           State of California
                           AIR RESOURCES BOARD




               EVALUATION OF AIRESOURCE TECHNOLOGIES, INC.‘S
                       C855 REPLACEMENT TURBOCHARGER
             FOR EXEMPTION FROM THE PROHIBITIONS OF VEKMICLE CODE
       SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE
                       CALIFORNIA CODE OF REGULATIONS




                                     by
                           Mobile Source Division

                            State of California
                            Air Resources Board
                            9528 Telstar Avenue
                          El Monte, CA 91731—2990



(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 the mention of trade names or commercial products constitute
endorsement or recommendation for use.)


                                  SUMMARY


          AiResource Technologies, Inc. of 955 Jones Road, Yuba City,

California 95991 has app]ied for an exemption from the prohibitions of

Section 27156 of the California Vehicle Code for their C855 Replacement

Turbocharger.   The C855 Replacement Turbocharger is designed for

installation on 1979 and older model—year Cummins Engine Company, Inc. 855

cubic inch displacement, 6—cylinder, turbocharged and aftercooled, diesel—

powered engines.

          Engineering evaluation based on the functional test data obtained

from steady—state chassis dynamometer testing show that the C855 Replacement

Turbochargér meets the requirements of Section 27156 of the California

Vehicle Code and Section 2222, Title 13 of the California Code of
Regulations and will not adversely affect the emissions from those engines

for which the exemption.is requested.

          The staff recommends that AiResource Technologies, Inc. be granted

an exemption as requested and that Executive Order No. D—386 be issued.


                                    CONTENTS


                                                           Page Number


SUMMARY                                                .         i
CONTENTsS                                      >   .            i1
1.          INTRODUCT ION                                    Oop
II.         CONCLUS ION                                          1
III.        RECOMMENDATION                                       1
IV.         DEVICE DESCRIPTION AND OPERATION                     2
v.       DEVICE EVALUATION AND DISCUSSION                        2
APPENDIX                          .
         ATTACHMENT 1         ’                                  6
            ATTACHMENT 2                                         7




                                      —ii—


                            State of California
                            AIR RESOURCES BOARD



EVALUATION OF AIRESOURCE TECHNOLOGIES, INC.‘S C855 REPLACEMENT TURBOCHARGER
            FOR EXEMPTION FROM THE PROHIBITIONS OF VEKHICLE CODE
       SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OFf THE
                       CALIFORNIA CODE OF REGULATIONS


I.        INTRODUCTION

          AiResource Technologies, Inc.   (ATl) of 955 Jones Road, Yuba City,

California 95991 has applied for an exemption from the prohibitions of

Section 27156 of the California Vehicle Code for their C855 Replacement

Turbocharger for installation on 1979 and older model—year Cummins Engine

Company, Inc. (Cummins) 855 cubic inch displacement (CID), 6—cylinder,

turbocharged and aftercooled, diesel—powered engines.   ATI has submitted

functional test data obtained from steady—state chassis dynamometer testing

conducted on a 1979 model—year California—certified Cummins 855 CID engine.



II.       CONCLUSTON
          Staff conducted an engineering evaluation, and based on the test

data submitted by ATI, the staff concludes that the C855 Replacement

Turbocharger does not adversely affect the exhaust emissions from those

engines for which the exemption is réquested.



IIH.      RECOMMENDATION
          The staff recommends that ATI be granted an exemption as

requested, permitting advertisement, sale and installation of their C855

Replacement Turbocharger on 1979 and older model—year Cummins 855 CID 6—

cylinder, turbocharged and aftercooled, diesel—powered éngines, and that >

Executive Order No. D—386 be issued.


IV.       DEVICE DESCRIPTION AND OPERATION
          The C855 Replacement Turbocharger has been designed to replace the

Original Equipment Manufacturer (OEM) Cummins $T50 turbocharger used on 1979

and older model—year Cummins 855 CID 6—cylinder engines.     As does the OEM

Cummins ST5O turbocharger, the C855 Replacement Turbocharger increases the

engine power output by pressurizing the intake air, thereby increasing the

density of the charge air from a given engine displacement.     The C855

Replacement Turbocharger is identical to the OEM turbocharger with the

following exceptions.    The dimensions of the C855 Replacement Turbocharger

turbine housing have been changed from those of the OEM turbocharger.      The
turbine nozzle area (A) and the distance from the center of the turbine

whee? to the centroid of area A (R) of the replacement turbocharger have

been reduced.   The overall effect of these changes is a decreased A/R ratio.

Also, the blade—tip height of the C855 Replacement Turbocharger compressor

impeller has been increased with all other dimensions of the compressor

remaining the same.     There are no pther changes from the OEM turbocharger,

and the replacement turbocharger requires no modification to the OEM system.


V.        DEVICE EVALUATION AND DISCUSSION

          ATI has submitted results of testing conducted at OynoData, Inc.

locatéd in Stockton, California.     The test engine used was a California—

certified 1979 model—year Cummins 855 CID 6—cylinder engine.     The emission

levels of oxides of nitrogen (NOx) were measured over a 13—mode. steady—state

test using a chassis dynamometer with the vehicle in the original

configuration and after the installation of the C855 Replacement

Turbocharger.   The NOx emission levels were measured in parts per million

and were calculated in gfams per brake—horsepower—hour (g/bhp—hr).     The NOx

emission levels weighted over the 13 modes before and after the modification
were 8.59 g/bhp—hr and 8.51 g/bhp—hr, respectively.     Smoke opacity levels


 were also measured in accordance with the Society of Automotive Engineers

 J1243 snap—idle test procedure.       Other parameters measured during the test
 were the boost pressure, compressor d%scharge temperature, and exhaust gas

 temperature.   Since the replacement turbocharger was tested using é non—

 standard test procedure, the staff conducted an—engingering evaluation of

 the C855 Replacement Turbocharger to determine its emissions impact on the

 applicable engines.               '

           Two major components of a turbocharger are the turbine, which

 converts energy of the engine exhaust gases to shaft power, and the

 compressor, which increases the pressure of the air or air—fuel mixture.

 For a turbochargér with a vaneless turbine housing, as is used in both the

 OEM and the replacement turbocharger, the amount of gas flow into the

 turbine is determined by the A/R ratio.       In basic operation of a

 turbocharger, a smaller A/R ratio will produce a faster running turbocharger

 which increases the boost pressure.       With increased boost pressure, the

 compressor discharge temperature also rises.       However, the additional air

 supplied by the faster turbocharger may reduce the engine operating

 temperature.

           In general, the compressor is more sensitivé to flow chafiges than

 the turbine, and there are many compressor—impeller variations.         Similar to
 the backward—curved compressor impe1ier where the blades curve backward from
 the direction of rotation, the increase in the blade—tip height increases

 compressor efficiency {reduction in heat gain or loss) due to minimal

 recirculation from the impeller discharge back to the blades.       It also

 decreases strength (reduction in gas velocity) because the centrifugal force

~at high speed tends to bend the blades at their roots.       This, in turn,
 produces lower boost pressure and lower compressor discharge temperature.

           Attachments 1 and 2 compare the boost pressure and compressor and

 exhaust gas temperatures for the two turbochargers at the maximum observed |


torque at the rated 2800 revolutions per minute (rpm) and at the

intermediate 1700 rpm engine speeds, respectively.     For the replacement

turbocharger with the lower A/R ratio, the test results show increases in

boost pressure and compressor discharge temperature and a decrease in

exhaust gas temperature.   These trends are—conststent with the operation of

a turbocharger and are observed for the duration of the chassis dynamometer

testing.

           The power output of a diesel engine is a function of fhe fuel—

injection and not of the intake manifold pressure as in gasoline engines.

Since recalibration of the fuel injection system is not required for the use

of the replacement turbocharger, the increased boost pressure will not have

a significant effect on power output.    The difference in the compressor

discharge temperatures for the two turbochargers may be attributed to the

increased boost pressure but is not significant enough to affect the

operation of the engine or its exhaust emissions.     The increased air supply

generated by higher boost may have caused the decrease in the exhaust gas

temperature which in turn may have slightly decreased the NOx emissions.

This change in NOx emissions is minimal and is not expected to affect the

particulate matter emission leveis.     This is demonstrated by the measured

smoke opacity levels.   As shown in the two attachments, the opacity levels

decreased slightly with the rep]acemént turbocharger and remained well below

the 40 percent opacity standard.     The modification made to the compressor

blades seemed to have little overall effect on the operating parameters of

the rep]acemeht turbocharger. :

           These results indicate that the replacement turbocharger operates

within the natural characteristics of a turbocharger, and the staff believes

that similar effects will be exhibited if the C855 Replacement Turbocharger

is used on the applicable engines.    Therefore, the staff concludes that the

€855 Rep]acemenfi Turbocharger will not have any adverse effect on exhaust


emissions of the engines for which the exemption is requested.

         ATI has submitted all the required information and has fulfilled

the requirements for an exemption.



Document Created: 2005-09-01 12:41:36
Document Modified: 2005-09-01 12:41:36

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