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  • AIS-137 (Part 4)

    I

    AUTOMOTIVE INDUSTRY STANDARD

    Test Method, Testing Equipment and Related Procedures for Type Approval and

    Conformity of Production (CoP) Testing of M & N Category Vehicles having GVW exceeding 3500 kg for Bharat Stage VI

    (BS-VI) Emission Norms as per CMV Rules 115, 116 and 126

    PRINTED BY THE AUTOMOTIVE RESEARCH ASSOCIATION OF INDIA

    P.B. NO. 832, PUNE 411 004

    ON BEHALF OF AUTOMOTIVE INDUSTRY STANDARDS COMMITTEE

    UNDER

    CENTRAL MOTOR VEHICLE RULES – TECHNICAL STANDING COMMITTEE

    SET-UP BY MINISTRY OF ROAD TRANSPORT & HIGHWAYS

    (DEPARTMENT OF ROAD TRANSPORT & HIGHWAYS) GOVERNMENT OF INDIA

    February 2019

  • AIS-137 (Part 4)

    II

    Status chart of the Standard to be used by the purchaser for updating the record

    Sr. No.

    Corrigenda Amendment Revision Date Remark Misc.

    General Remarks:

  • AIS-137 (Part 4)

    III

    INTRODUCTION

    In India, the mass emission norms based on Indian Driving Cycle (IDC) were notified under CMVR in 1989. The first mass emission norms for vehicles were enforced from 1st April 1991 for Gasoline vehicles and from 1st April 1992 for Diesel vehicles. Since then, progressively emission norms have been tightened. Government of India has notified migration to Bharat Stage VI (BS VI) emissions norms for 2, 3 and 4 wheeled vehicles from 1st April 2020. For Agricultural Tractors, Construction Equipment Vehicles and Combine Harvesters (vehicles having power exceeding 37 kW) next stage emission norms Bharat Stage (CEV/TREM) – IV) are notified from 1st October 2020 and Bharat Stage (CEV/TREM) – V) from 1st April 2024. Test procedure for Type Approval and COP for above emission norms shall be as per various Parts of AIS-137, as applicable. This Part 4 of AIS-137 prescribes Test Method, Testing Equipment and Related Procedures for Type Approval and Conformity of Production (Cop) Testing of M & N Category Vehicles having GVW exceeding 3500 kg for Bharat Stage VI (BS-VI) Emission Norms as per CMV Rules 115, 116 and 126. While preparing this standard, considerable assistance has been taken from following regulations/documents: UN Regulation 49 (Supplement 3 to the 06 series of Amendment date of Entry into Force 20.01.2016) Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles

    The Committee Composition for formulation of this standard is given in Annexure 1. AISC composition is given in Annexure 2.

    After approval of the standard by SCOE, The Automotive Research Association of India, (ARAI), Pune, being the Secretariat of the AIS Committee, has published this standard. For better dissemination of this information ARAI may publish this standard on their web site.

    ******

  • AIS-137 (Part 4)

    IV

    TABLE OF CONTENTS

    CHAPTER &

    APPENDIX NO CONTENTS PAGE NO

    Chapter 1 Overall Requirement

    1/460

    Appendix 1 Procedure for production conformity testing

    40/460

    Appendix 2 Summary of approval process for engines fuelled with Natural Gas, engines fuelled with LPG and dual-fuel engines fuelled with Natural Gas / Biomethane or LPG.

    42/460

    Chapter 2 Essential characteristics of the vehicle and engine and information concerning the conduct of tests

    45/460

    Chapter 3 Test procedure

    46/460

    Appendix 1

    WHTC engine dynamometer schedule 148/460

    Appendix 2

    Emission measurement equipment 164/460

    Appendix 3

    Statistics 179/460

    Appendix 4

    Carbon flow check 181/460

    Appendix 5

    Example of calculation procedure 183/460

    Appendix 6 Installation of auxiliaries and equipment for emission test

    190/460

    Appendix 7

    Procedure for the measurement of ammonia 193/460

    Appendix 8

    Particle number emissions measurement equipment 198/460

    Chapter 4 Technical specifications of reference fuels

    209/460

    Chapter 5 Emission data required at type approval for roadworthiness purposes.

    214/460

    Chapter 6 Verifying the durability of engine systems.

    218/460

    Chapter 7 Conformity of in-service engines or vehicles

    226/460

    Appendix 1 Test procedure for vehicle emissions testing with portable emission measurement system

    243/460

    Appendix 2

    Portable emission measurement equipment 256/460

  • AIS-137 (Part 4)

    V

    Appendix 3

    Calibration of portable emission measurement equipment

    257/460

    Appendix 4 Method to check the conformity of the ECU torque-signal

    258/460

    Chapter 8A On-Board Diagnostic Systems (OBD)

    259/460

    Appendix 1 Assessment of the in-use performance of the On-Board Diagnostic system

    266/460

    Appendix 2 Model of an OBD in-use performance compliance statement

    271/460

    Chapter 8B Technical requirements for On-Board Diagnostic Systems(OBD)

    272/460

    Appendix 1

    Approval of installation of OBD systems 316/460

    Appendix 2

    Malfunctions illustration of the DTC status - Illustration of the MI and counters activation schemes

    317/460

    Appendix 3

    Monitoring requirements 322/460

    Appendix 4

    Technical compliance report 330/460

    Appendix 5

    Freeze frame and data stream information 338/460

    Appendix 6

    Reference standard documents 341/460

    Appendix 7

    Performance monitoring 342/460

    Appendix 8

    Demonstration requirements in case of performance monitoring of a wall-flow diesel particulate filter

    344/460

    Chapter 8C Technical requirements for assessing the in-use performance of On-Board Diagnostic systems (OBD)

    345/460

    Appendix 1

    Groups of moniters 353/460

    Chapter 9 Technical requirements on Off-Cycle Emissions (OCE) and in-use emissions

    354/460

    Appendix 1

    PEMS demonstration test at type approval 364/460

    Chapter 10 Requirements to ensure the correct operation of NOx control measures

    366/460

    Appendix 1

    Demonstration requirements 379/460

    Appendix 2

    Description of the driver warning and inducement activation and deactivation mechanisms

    387/460

    Appendix 3

    Low Level Inducement Torque Reduction Scheme 394/460

    Appendix 4

    Demonstration of correct installation on a vehicle in the case of engines type-approved as a system

    395/460

    Appendix 5

    Access to "NOx Control Information" 396/460

  • AIS-137 (Part 4)

    VI

    Appendix 6 Demonstration of the minimum acceptable reagent concentration CDMIN

    398/460

    CHAPTER 11

    CO2 emissions and fuel consumption 399/460

    Appendix1 Provisions on CO2 emissions and fuel consumption for extension of a type approval for a vehicle type approved under this Part with a reference mass exceeding 2,380 kg but not exceeding 2,610 kg

    405/460

    Chapter 12 Type approval of replacement pollution control devices as separate technical unit

    407/460

    Appendix 1

    Model information document 415/460

    Appendix 2 Communication concerning the approval of a replacement pollution control device pursuant to this Part and its amendments

    416/460

    Appendix 3

    Ageing procedure for evaluation of durability 417/460

    Chapter 13 Access to vehicle OBD information

    418/460

    Chapter 14 Additional technical requirements for diesel-gas dual- fuel engines and vehicles

    420/460

    Appendix 1 Types of HDDF engines and vehicles illustration of the definitions and main requirements

    440/460

    Appendix 2 Activation and deactivation mechanisms of the counter(s), warning system, operability restriction, service mode in case of dual-fuel engines and vehicles - Description and illustrations

    441/460

    Appendix 3 HDDF dual-fuel indicator, warning system, operability restriction - demonstration requirements

    447/460

    Appendix 4 Additional emission test procedure requirements for dual- fuel engines

    450/460

    Appendix 5 Additional PEMS emission test procedure requirements for dual-fuel engines

    454/460

    Appendix 6 Determination of molar component ratios and ugas values for dual-fuel engines

    455/460

    Annexure 1 Committee for formulation of this standard 459/460

    Annexure 2 Committee composition - AISC 460/460

    *****

  • AIS-137 (Part 4)

    1/460

    CHAPTER 1

    OVERALL REQUIREMENTS

    1.0 SCOPE

    1.1 This Part of AIS-137 standard applies to the engines f it ted in all M and N Category vehicles with GVW above 3,500 kg for Bharat Stage VI.

    1.1.1 This Part of AIS-137 applies to the control of gaseous and particulate pollutants, useful life of emission contro