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<\/p>\nCONTENTS<\/p>\n
Foreword
\n1 Scope
\n2 Normative References
\n3 Terms and Definitions
\n4 Requirements for Pollution Control
\n5 Engine (Vehicle) Label
\n6 Specifications and Tests
\n7 Installation on the Vehicle
\n8 Family and Parent Engine
\n9 Compliance Requirements and Inspection of Newly Produced Vehicles
\n10 Requirements and Inspection of In-Service Conformity
\n11 Implementation of This Standard
\nAnnex A (Normative) Information on Type Test
\nAnnex B (Informative) Format of Type Test Report
\nAnnex C (Normative) Test Procedure for Standard Engine Cycle
\nAnnex D (Normative) Specifications of Reference Fuels
\nAnnex E (Normative) Testing Requirements for Engine Off-Cycle Emissions (OCE)
\nAnnex F (Normative) On-Board Diagnostic System (OBD)
\nAnnex G (Normative) Requirements for Correct Operation of NOx Control System
\nAnnex H (Normative) Durability of Engine Systems
\nAnnex I (Normative) Requirements for Ensuring Conformity of Production and Inspections
\nAnnex J (Normative) Technical Requirements for In-Service Conformity
\nAnnex K (Normative) Procedure for Real Road Emissions Testing with Portable Emissions Measurement System (PEMS)
\nAnnex L (Normative) Emission Measurement Method on Vehicle Chassis Dynamometer
\nAnnex M (Normative) Special Requirements for Type Test of LPG or NG Fuelled Engines and Vehicles
\nAnnex N (Normative) Technical Requirements for Diesel-Gas Dual-Fuel Engines and Vehicles
\nAnnex O (Normative) Type Test of Replacement Pollution Control Devices as Separate Technical Unit
\nAnnex P (Normative) Access to Vehicle OBD and Maintenance Information
\nAnnex Q (Normative) Technical Specifications of Remote Emission Management Vehicle Terminal and Communication Data Format<\/p>\n
<\/p>\n
1 SCOPE<\/p>\n
This Standard specifies the limits and test methods for emissions of gaseous and particulate pollutants from the CIEs and the vehicles installed with CIE, and the limits and measurement methods for emissions of gaseous pollutants from the NG\/LPG fuelled PIEs and the vehicles installed with NG\/ LPG fuelled PIE.
\nThis Standard applies to type test, conformity of production (COP) check, supervisory inspection of newly produced vehicles and in-service conformity check for the compression ignition engines and gas fuelled positive ignition engines installed on Category M1 vehicles with a GVW exceeding 3,500 kg and Categories M2, M3, N1, N2 and N3 vehicles, and for the above-mentioned vehicles.
\nThe type test of a complete vehicle carried out in accordance with this standard can be extended to its variants and versions with a reference mass above 2,380 kg.
\nThe motor vehicles of Category M1, M2, N1 and N2 equipped with CIE or gas fuelled PIE, if have already passed the type test according to GB 18352.6-2016, may be exempted from the type test under this standard.<\/p>\n
2 NORMATIVE REFERENCES<\/p>\n
The standard refers to the following normative documents or the provisions contained therein. For dated references, only the editions cited apply. For undated references, the latest editions of the normative document (including any amendments) apply.<\/p>\n
GB\/T 2624 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full (IDT ISO 5176)
\nGB\/T 3730.2 Road vehicle-Masses-Vocabulary and codes
\nGB\/T 8190.1 Reciprocating internal combustion engines – Exhaust emission measurement -Part 1:Test-bed measurement of gaseous and particulate exhaust emissions
\nGB\/T 15089 Classification of power-driven vehicles and trailers
\nGB\/T 17692 Measurement methods of net power for automotive engines
\nGB 18047 Compressed natural gas as vehicle fuel
\nGB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6)
\nGB\/T 19001 Quality management systems
\nGB\/T 27840 Fuel consumption test methods for heavy-duty commercial vehicles
\nGB 30510 Fuel consumption limits for heavy-duty commercial vehicles
\nISO 5725 Accuracy of measurement methods and results
\nISO 7000 Graphical symbols for use on equipment – Index and synopsis
\nISO 13400 Road vehicles – Diagnostic communication over Internet Protocol (DoIP)
\nISO 15031 Road vehicles – Communication between vehicle and external equipment for emissions-related diagnostics
\nISO 15031-3 Road vehicles – Communication between vehicle and external equipment for emissions-related diagnostics – Part 3: Diagnostic connector and related electrical circuits: Specification and use
\nISO 15031-7 Road vehicles – Communication between vehicle and external equipment for emissions-related diagnostics – Part 7: Data link security
\nISO 15765-4 Road vehicles – Diagnostic communication over Controller Area Network (DoCAN) – Part 4: Requirements for emissions-related systems
\nISO 27145 Road vehicles – Implementation of World-Wide Harmonized On-Board Diagnostics (WWH-OBD) communication requirements
\nSAE J1708 Serial data communications between microcomputer systems in heavy-duty vehicle applications
\nSAE J1939 Recommended Practice for a Serial Control and Communications Vehicle Network
\nSAE J1939-13 Off-Board Diagnostic Connector
\nSAE J1939-73 Application Layer – Diagnostics
\nSAE J2186 E\/E Data Link Security
\nASTM E29-06b Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
\nASTM F1471-93 Standard Test Method for Air Cleaning Performance of a High-Efficiency Particulate Air- Filter System
\nEN 1822-1 High efficiency air filters (EPA, HEPA and ULPA) – Part 1: Classification, performance testing, marking<\/p>\n
3 TERMS AND DEFINITIONS<\/p>\n
For the purpose of this standard, the following terms and definitions apply.<\/p>\n
3.1
\n\u8001\u5316\u5faa\u73af aging cycle
\n\u201cAging cycle\u201d means the vehicle or engine operation (speed, load, power) to be executed during the durability test.<\/p>\n
3.2
\n\u53d1\u52a8\u673a\uff08\u53d1\u52a8\u673a\u7cfb\u65cf\uff09\u578b\u5f0f\u68c0\u9a8cengine (engine family) type test
\n\u201cEngine (engine family) type test\u201d means the type approval test, after the design of a type of engine (engine family) completes, carried out on a new product intended to be launched on the market to verify whether the product complies with the specifications of this standard.
\n3.3
\n\u8f66\u8f86\u578b\u5f0f\u68c0\u9a8cvehicle type test
\n\u201cVehicle type test\u201d means the type approval test, after the design of a vehicle type completes, carried out on a trial-produced new product to verify whether the product complies with the specifications of this standard.
\n3.4
\n\u8f85\u52a9\u6392\u653e\u7b56\u7565auxiliary emission strategy (AES)
\n\u201cAuxiliary emission strategy\u201d means an emission control strategy that becomes active and replaces or modifies a base emission strategy for a specific purpose and in response to a specific set of ambient or operating conditions and only remains operational as long as those conditions exist.
\n3.5
\n\u57fa\u672c\u6392\u653e\u7b56\u7565base emission strategy (BES)
\n\u201cBase Emission strategy\u201d means an emission control strategy that is active throughout the speed and load operating range of the engine unless an AES is activated.
\n3.6
\n\u8fde\u7eed\u518d\u751f continuous regeneration
\n\u201cContinuous regeneration\u201d means the regeneration process of an exhaust after-treatment system that occurs either permanently or at least once per world harmonized transient cycle (WHTC) hot part test.
\n3.7
\n\u66f2\u8f74\u7bb1 crankcase
\n\u201cCrankcase\u201d means the spaces in, or external to, an engine which are connected to the oil sump by internal or external ducts through which gases and vapours can be emitted.
\n3.8
\n\u6392\u653e\u63a7\u5236\u5173\u952e\u90e8\u4ef6critical emission-related components
\n\u201cCritical emission-related components\u201d means the following components which are designed primarily for emission control: fuel supply system, air intake system, exhaust after-treatment system, the electronic engine control unit (ECU) and its associated sensors and actuators, and the exhaust gas recirculation (EGR) system including all related filters, coolers, control valves and tubing.
\n3.9
\n\u6392\u653e\u63a7\u5236\u5173\u952e\u90e8\u4ef6\u7ef4\u62a4critical emission-related maintenance
\n\u201cCritical emission-related maintenance\u201d means the maintenance to be performed on critical emission-related components.
\n3.10
\n\u5931\u6548\u7b56\u7565 defeat strategy
\n\u201cDefeat strategy\u201d means an emission strategy that does not meet the performance requirements for a base or auxiliary emission strategy as specified in this standard.<\/p>\n
\n
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