APPENDIX A: MANUFACTURER STANDARDS AND TEST PROCEDU RES

Part 3

Proposed Regulation Order Part 3: Amendments to the incorporated “California Exhaust

and Standards and Test Procedures for New 2001 and Later Off-Road Large SparkIgnition Engines” (ISO 8178)State of California

AIR RESOURCES BOARD

CALIFORNIA EXHAUST EMISSION STANDARDS AND TEST PROC EDURES

FOR NEW 2001 AND LATER THROUGH 2006 OFF-ROAD LARGE SPARK-IGNITION

ENGINES

PART II

Adopted: September 1, 1999

NOTE : This document incorporates by reference the Int ernational Standards Organization

(ISO) 8178 test procedure, Part 1, August 15, 1996, Part 4, August 15, 1996, and Part 5, May 15, 1998, with modifications. Sections which have been included in their entirety are set forth with the section numbe r and title. California provisions which modify specific ISO provisions are denoted by the words "DELETE" for the ISO language and "REPLACE WITH" for the new Cal ifornia language. The symbols "*****" and "..." mean that the remainder o f the ISO text for a specific section is not shown in these procedures but has be en included by reference, unchanged. ISO sections which are not listed are n ot part of the procedures.

This document is all newly adopted text. The sole amendments are to the title and years of a pplicability of the regulations.CALIFORNIA EXHAUST EMISSION STANDARDS AND TEST PROC EDURES

FOR NEW 2001 AND LATER THROUGH 2006 OFF-ROAD LARGE SPARK-IGNITION

ENGINES

PART II

To the extent the following provisions of ISO 8178, Part 1, August 15, 1996, Part 4, August 15, 1996, and Part 5, May 15, 1998, pertain to the test ing and compliance of exhaust emissions from off-road large spark-ignition engines, they are ado pted and incorporated herein by this reference

as Part II of the California Exhaust Emission Stand ards and Test Procedures for New 2001 and

Later through 2006 Off-Road Large Spark-Ignition Engines (Test Procedu res), except as altered or replaced by the provisions set forth below.

Since the scope of this regulation is limited to of f-road spark-ignition engines, the ISO provisions contained in the procedure identified ab ove which pertain to Diesel cycle engines or to engines used for applications other than off-roa d purposes shall not be applicable to Part II of

these Test Procedures.

International Standards Organization (ISO) 8178, R IC Engines - Exhaust emission measurement - Part 1: Test bed measurement of gaseous and par ticulate exhaust emissions from RIC engines.

1. Scope

2. Normative References

3. Definitions

ADD:

Note: In addition to the definitions listed here, t hose definitions listed in section 2 of Part I of these Test Procedures apply.

* * * * *

4. Symbols and Abbreviations

ADD: Note: In addition to the symbols and abbreviations listed here, those symbols

and abbreviations listed in section 3 of Part I of these Test Procedures shall apply.

* * * * *

5. Test Conditions2

6. DELETE and

REPLACE WITH:

6. Test fuels

Test fuels shall meet the requirements specified in section 25 of Part I of these

Test Procedures.

7. Measurement Equipment and data to be measured

DELETE all references to subsection 7.5 (Determinat ion of the Particulates).

8. Calibration of the analytical instruments

9. DELETE

10. Running conditions (Test cycles)

11. Test run

DELETE all references to the particulates and parti culate sampling method.

12. Data evaluation for gaseous and particulate em ission

DELETE all references to the particulate emission.

13. Calculation of gaseous emissions

14. DELETE

15. Determination of the gaseous emissions

ADD:

NOTE: Manufacturers may use the raw exhaust gas sam pling methods for

certification testing through 2004 model year with prior Executive Officer approval.

* * * *

16. DELETE

Figures and Explanations3

Annex A Calculation of the exhaust gas mass flow an d/or of the combustion air consumption

Annex B Equipment and auxiliaries to be installed f or the test to determine engine power

Annex C Efficiency calculation and corrections for the non-methane hydrocarbon cutter

measuring method

Annex D Formulae for the calculation of the coeffic ients u, v, w in 13.4

Annex E Heat calculation (transfer tube)

Annex F Bibliography4

ISO 8178, RIC Engines - Exhaust emission measuremen t - Part 4: Test cycles for different engine applications.

1. Scope

2. Normative References

3. Definitions

ADD:

Note: In addition to the definitions listed here, t hose definitions listed in section 2 of Part I of these Test Procedures shall apply.

* * * * *

4. Symbols and Abbreviations

ADD:

Note: In addition to the symbols and abbreviations listed here, those symbols

and abbreviations listed in section 3 of Part I of these Test Procedures shall apply.

* * * * *

5. Torque

6. Intermediate speed

7. Information regarding of the test

8. Modes and weighting factors for test cycles

8.2 DELETE

8.3 Test cycle types C "Off-road vehicles and indu strial equipment"

8.3.1 DELETE5

8.4 Test cycle type D “Constant”

DELETE all references to D-1 test cycle

8.5 DELETE

8.6 DELETE

8.7 Test cycles type G “Utility, lawn and garden”, typically < 25 hp.

DELETE all reference to G-2 and G-3 test cycles.

ADD:

Note: Manufacturers may use the G-1 test cycle for engines equal to or less than 1.0 liter. Manufacturer must show that the engines tested with the G-1 test cycle have engine characteristics and operating cha racteristics similar to small off-road equipment engines (less than 25 hp).

* * * *

Annex A DELETE

Annex B Combined table of the weighting factors

Annex C Bibliography6

ISO 8178, RIC Engines - Exhaust emission measuremen t - Part 5: Test fuels.

1. DELETE and

REPLACE WITH:

1. Scope

This part specifies the calculation of the fuel spe cific factors and exhaust gas flow, which are necessary to determine the emission test resul ts in accordance with ISO 8178, Part 1.

2. Normative References

3. Definitions

ADD:

Note: In addition to the definitions listed here, t hose definitions listed in section 2 of Part I of these Test Procedures apply.

* * * * *

4. Symbols and Abbreviations

ADD:

Note: In addition to the symbols and abbreviations listed here, those symbols

and abbreviations listed in section 3 of Part I of these Test Procedures apply.

* * * * *

5. DELETE and REPLACE WITH:

5. Choice of Fuels

Test fuels shall meet the requirements specified in section 25 of Part I of these Test

Procedures.

6. DELETE

7. Calculation of the Exhaust Gas Flow Using Fuel Specific Factors

8. Calculation of the Fuel Specific Factors

TablesAnnex A Calculation of the fuel specific factors

Annex B Equivalent non-ISO test methods

Annex C Organizations capable of providing specific ations for commercial fuels

Annex D Bibliography