Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on January 25, 1993.
As of Monday, December 17th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
All 855 CDI Cummins turbocharged heavy-duty diesel engines equipped with a Cummins PTG non-Air Fuel Control (AFC) style fuel pump

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-263-1
  • Executive Order 263-1 / D263-1
  • ARB # D-263-1
  • Executive Order No: D-263-1
  • C.A.R.B. No. D-263-1
  • Resolution D-263-1
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-263-1 PDF

D-263-1 Document:



                                                                (Page 1 of 2)

                                 State of California
                                 AIR RESOURCES BOARD

                            EXECUTIVE ORDER D—263—1
                 Relating to Exemptions Under Section 27156
                            of the Vehicle Code


                                 RIGHETTI ENTERPRISES
                                 RE—2 ANEROID SYSTEM

Pursuant to the authority vested in the Air Resources Ecard 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 RE—2 Aneroid
System manufactured by Righetti Enterprises, 1627 E. Channel Street,
Stockton, California,   95205,    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 Velicle Code for all
855 cubic inch displacement Cummins turbocharged heavy—Suty diesel engines
equipped with a Cummins PTG non—Air Fuel Control (AFC) style fuel pump.

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

Changes made to the design or operating conditions of ths 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.

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.

Marketing of this device using an identification other than that shown in
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 CERTIFICATIO®, 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 RICHETTI ENTERPRISES‘ RE—2 ANEROID SYSTEM.

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


RIGHETTI ENTERPRISES                                       EXECUTIVE ORDER D—263—1
RE—2 ANEROID SYSTEM                                             (Page 2 of 2)




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 of the conditions of this Executive Order will be
submitted to the Attorney General of California for suck action as he deenms
advisable.

                                                  id
Executed at El Monte, California, this é% 9.       day    of January, 1993.




                                                                 C
                                         R. B/   Summerfield
                                         Assistant Division Chief
                                         Mobile Source Division


                   State of California
                   AIR RESOURCES BOARD




 EVALUATION OF RIGHETTI ENTERPRISES‘ RE—2 ANEROID SYSTEM
    FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
            THE CALIFORNIA CODE OF REGULATIONS




                      January 1993


                            State of California
                            AIR RESOURCES BOARD




          EVALUATION OF RIGHETTI ENTERPRISES‘ RE—2 ANEROID SYSTEM
             FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE 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 mention of trade names or commercial products constitute
endorsement or recommendation for use.)


                                     SUMMARY




          Righetti Enterprises, of 1627 East Channel Street,   Stockton,   California,

95205 has applied for an exemption from the prohibitions in Section 27156 of

the California Vehicle Code (VC)    for their RE—2 Aneroid System.    The RE~—2

Aneroid System is designed for installation on all 855 cubic inch

displacement heavy—duty turbocharged Cummins diesel engines equipped with a

Cummins PTG non—Air Fuel Control (AFC) style fuel pump.

          Righetti Enterprises has submitted a completed application and all the

required information.     Based on an engineering evaluation of the application

materials, it was determined that the RE—2 Aneroid System does not have any

adverse effects on emissions.

          The staff recommends that Righetti Enterprises be granted exemption as

requested and that Executive Order D—263—1 be issued for the RE—2 Aneroid

System.


                                     TABLE OF CONTENTS




                                                         Number

SUMMARY                                                     i

CONTENTS                                                   ii

I.        INTRODUCTION

II.       CONCLUSION

III.      RECOMMENDATION

IV.       DEVICE DESCRIPTION

v.     RE—2 ANEROID SYSTEM EVALUATION AND DISCUSSION

       APPENDIX

       APPENDIX A:         INSTALLATION INSTRUCTIONS

       APPENDIX B:       DRAWINGS




                                            i1


               EVALUATION OF RIGHETTL ENTERPRISES‘ RE—2 ANEROID SYSTEM
                 FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
           SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                          CALIFORNIA CODE OF REGULATIONS




I.        INTRODUCTION

          Righetti Enterprises, of 1627 East Channel Street, Stockton, California,

95205 has applied for an exemption from the prohibitions in Section 27156 of

the California Vehicle Code (VC)    for their RE—2 Aneroid System.   The RE—2

Aneroid System is designed for installation on all 855 cubic inch displacement

heavy—duty turbocharged Cummins diesel engines equipped with a Cummins PTG non—

AFC style fuel pump.

          Righetti Enterprises has submitted a completed application and all the

required information.

II.       CONCLUSION

          Based on an engineering evaluation of the operating principles of the

Righetti‘Enterprises' RE—2 Aneroid System,    the staff concludes that the

installation of the Righetti Enterprises‘ RE—2 Aneroid System will not

adversely affect exhaust emissions from vehicles for which an exemption is

requested.

III.      RECOMMENDATION

          The staff recommends that Righetti Enterprises be granted exemption as

requested and that Executive Order D—263—1 be issued for the RE—2 Aneroid

System.

IV.    DEVICE_DESCRIPTION

          The RE—2 Aneroid System decreases fuel flow to the engine during low

intake manifold air pressure conditions such as rapid throttle opening.      The

device may be installed on all 855 cubic inch displacement Cummins turbocharged

engine equipped with Cummins PTG non—AFC style fuel pump.    The RE—2 is similar


to the Cummins optional aneroid which is no longer available and the Righetti

Enterprises‘ RE—1 Aneroid exempted under Executive Order (EO) D—263.      The RE~2

is a 6061 T6 billet aluminum valve body with three drilled passages (see

drawings in Appendix B).     Four hose connections are provided with the device.

The fuel is plumbed from the outlet of the existing fuel pump to the inlet of

the aneroid fuel passage.     The aneroid fuel passage outlet is routed to the

injectors.     The aneroid leak—off line connects the plunger passage with the

existing fuel tank return lines.     The air signal line connects the aneroid

cover with the intake manifold.




v.     RE—2 ANEROID SYSTEM EVALUATION AND DISCUSSION

       Upon initiation of rapid acceleration, the turbocharger cannot increase

the intake manifold pressure to supply sufficient air for the proper air/fuel

mixture.     The resulting rich mixture causes emission of thick smoke.

       During periods of low manifold pressures, such as during rapid

acceleration, the aneroid reduces the fuel charge to each cylinder by

restricting the fuel flow rate — lowering the fuel rail pressure.     As the

turbocharger increases the intaké manifold pressure, the fuel flow rate

increases to rated pump calibration volume and pressure.     According to the

manufacturer, the system, if properly adjusted, reduces the smoke opacity while

not affecting performance.

       Previously, a snap—idle test procedure was conducted to evaluate the

emissions impact of the RE—1 Aneroid System.     The RE—2 Aneroid System performs

an identical function utilizing a different, equally effective, mechanical

arrangement.     Therefore, the emissions effects resulting from use of the RE—2

would be similar to the RE—1; i.e. no adverse effect on emissions.


APPENDIX


APPENDIX A:


    R&_L 8 H.E.T TJj                       E N _T E R POR I §E S
        1627  E. CHANNEL S8T.,           STOCKTON,    CA._ 95205
          PH. (209) 4464—8306            FAX (209) 474—473
             TNS TALLATION AND DPERATING INSTRUETIONS
             RIG@HETTI ENTERPRISES RE—2 ANEROID SYSTEM
Intended Application
Any Cummins    turbocharged NT series engine equipped with a
ptg fuel pump not already outfzttad with an          air fuel   control
device ({(AFC) or aneroid system.
Intended Operation
The Righetti RE—Z aneroid system is intended to reduce fuel
pump delivery to the engine       (and    thus reduce exhaust smoke)
during low air intake manifold pressure conditions,             ie onset
of throttle application.
Theory of. Operation
During the initiation of acceleration of a diesel engine,
turbocharger lag deprives the engine of sufficient air to
allow clean combustion of all of the fuel delivered to the
cylinders.    The anercid system    (modulating    system)    reduces
fuel delivery to the engine as a function of manifold air
pressure, allowing a controlled delivery of fuel to the
engine,   minimizing   formation of exhaust smoke.      As exhaust
energy increases, accelerating turbocharger wheel speed,
manifold air pressure rises. The Righetti RE—Z2 aneroid
system tracks the rising manifold pressure and allows an
increasing fuel rate to be delivered to the engine, up to
the full delivery of the fuel pump at about 7—10 psig
depending on engine CPL and fuel pump calibration cade.
In simplest terms, the Righstti RE—Z2 Aneroid system only
effects the formation of smoke during periods of
acceleration accompanied     by   low manifold    pressure.    Formation
of exhaust smoke at intake manifold pressures above 7—10
psig are strictly a function of engine configquration and
condition.
Installation (Ref Righetti Enterprises Drawing RE—2—1)
Mount the RE—2Z aneroid via the included mounting bracket on
the side of the engine approximately 12" behind the fuel
pump. The NT series engine has several 1/2" NF thread             hbhosses
which will accommodate this mounting configuration.


Discomnect and remove the existing fuel pump delivery line
which runs from       the fuel       pump shut—off valve to   the cylinder
head fuel inlet port.
Flumb the fuel pump shut—off valve delivery port (57/16"
inverted flair)} to the aneroid inlet (also 5/16" inverted
flair) port as indicated. 5/16" ID tubing or #8 Stratoflex
line minimum is required.                    >
Plumb the Anersid discharge port (37/16" inverted flairl                    to
the cylinder head fuel inmlet pnrt (also 9716" inverted
flair).
Plumbt the air signal lime form the engine intake manifoeld
to the aneroid air sensing port as indicated. The intake
manifold is equipped with a 1/8" fpt conmection as is the
aneroid air sensing          port.    Use minimum Stratoflex #4 or
equivalent.
Plumb the aneroid leak—off port to the fuel return system as
indicated. Stratoflex size #4 minimum or equivalent is
required .
Start the engine and allow a warm up perioed,.             Note:     air which
entered the fuel system plumbing during installation will
cause hard starmrting. The fuel system may have to be purged
before starting the engine.
After the engine starts, and idles,                cycle the throttle to
make sure all        air    is purged   from the fusel system.      Next,
perform a snap idie test. (Three snaps for clean~out, then
record three). It is recommended that an opacity meter whith
meets the requirements of SAE 1243 be used to conduct this
test. Currently, S59% opacity is the legal limit for class 8
commercial rigs manufactured prior to 1991. We are advised
that consideration is currently being given to lower this
level in the near future. For this reason, we suggest that
sdjustmemt to 35% to 38% should be considered. It has been
our experience        that unless something         is wrong with    the
engine,>   35% to 38% opacity should still alilow reasonably
good    acceleration.
Adjustment of the valve to compliment the exact engine
configuraticn may be achieved by manipulation of the "no—
air" screw on the side of the aneroid valve body,                   Loosen the
7/16"   jam nmnut,    and    back   the adjusting screw out    for more
fuel.   Adjust the screw in for less fuel. Adjustments of 1/4
turmn can make significamt changes            in    the exhaust cpacity.
When close to the desired opacity level,                adjustments of 1/8
turn will suffice. When             final adjustment is reached, lock
the jam nut (be careful             that the adjusting screw is held


w/5
      °r




           steady whils   locking)   and   seal   the mno air screw   location
           with the name tag provided with the vaive.
           When complete, check the installation to make sure all of
           the lines are secure and not leaking. Also make sure the
           lines and   valve   have been   located carefully so as      to not
           sbstruct throttle linkage movement.


APPENDIX B:


                                                          t          INTAKE MANMIFCLD OR AFTERCCGOLER ASSY,

                                                              ho               CBHE::::::&'\                                          *
                                                                           —
                                                                     FUEL T70 INJECTORS
                                                                      l                 —    8   .           H
                                                                                                                  AIR SIGNAL LINE
                                                                                                                   i4 AERDOLIP
—             TT                                                          mm m s                                   ze
    ASHED LINES INDICATE PLUMEING BY CUSTOMER
                               ‘                                                            Y,
                                                                                             1
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                                                                                                             Ile
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                                                                                                                                     s
                                                                                                             H
                                           ‘               |                                 Eo                           2
                  E_)(IST[NG FUEL RETURK LTNE                                                H               H                /lj/
                                                                                                                              7
                                                       FUEL TD ANERDID                                              it
                                                       #6 AERDGUIP LINE                                             ”
                                                      mm mm =myz=o—— ol                                             t
                                                                                _/?' RE—Z2 ANEROID                  11
                                                     oC            "g age          [                  2.           ,‘4‘
                                                                                                     L2 cnvl in/
                                                                   ABJUSTMENT                        tC Z"’


                                                                                                              ANERCED
                                                         \                                                 LEAK—BFF LINE
                                                                                    .                      #4 AEROAUIP
                                                               EXISTENG PLMP SUC1.IN

                                                                                                                          FUEL TPNK



       _RIGHETTI ENTERPRISES RE—2 ANERDOID SYSTEM
    ichett: enterpersee      BTE      REv.     bescrerPtion
     1627 E CHANNEL 5T
                             b48—22            INSTALLSTION DETAILS
    STOCKTON CA. 95205
     2P 464—erue         _            To        ~    teerter—érbe>



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

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