Standard No.:	GB 17691-2018
English Name:	Limits and measurement methods for emissions from diesel fuelled heavy-duty vehicles (CHINA VI)
Chinese Name:	重型柴油车污染物排放限值及测量方法（中国第六阶段）
Professional Classification:	GB    National Standard
Issued on:	2018-6-22
Implemented on:	2019-7-1
Status:	valid
Superseding:	GB 17691-2005 Limits and measurement methods for exhaust pollutants from compression ignition and gas fuelled positive ignition engines of vehicles (III IV V)
Language:	English
File Format:	PDF
Word Count:	185000 words
Price(USD):	2700.0
Delivery:	via email in 1 business day

Limits and measurement methods for emissions from diesel fuelled heavy-duty vehicles (CHINA VI) English 1 Application scope This standard specifies the emission limits and measurement methods for gaseous and particulate pollutants from vehicles equipped with compression-ignition engines and their engines as well as those for gaseous pollutants from vehicles equipped with natural gas (NG) or liquefied petroleum gas (LPG) fuelled positive ignition engines and their engines. This standard is applicable to the type test, checking of conformity of production, newly produced vehicle emission supervision inspection and in-service conformity inspection of vehicles of categories M2, M3, N1, N2 and N3 equipped with compression-ignition engines and gas fuelled positive ignition engines and vehicles of category M1 with a total mass exceeding 3,500kg as well as their engines. The type test of a complete vehicle given under this standard may be extended to its variants and versions with a reference mass above 2,380kg. The vehicles of categories M1, M2, N1 and N2 equipped with compression-ignition engines and gas fuelled positive ignition engines which have been subjected to type test in accordance with GB 18352.6-2016 may not be subjected to type test in accordance with this standard. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document applies. GB/T 2624 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full (IDT ISO 5176) GB/T 3730.2 Road vehicle - Masses - Vocabulary and codes GB/T 8190.1 Reciprocating internal combustion engines - Exhaust emission measurement - Part 1: Test-bed measurement of gaseous and particulate exhaust emissions GB/T 15089 Classification of power-driven vehicles and trailers GB/T 17692 Measurement methods of net power for automotive engines GB 18047 Compressed natural gas as vehicle fuel GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6) GB/T 19001 Quality management systems GB/T 27840 Fuel consumption test methods for heavy-duty commercial vehicles GB 30510 Fuel consumption limits for heavy-duty commercial vehicles ISO 5725 Accuracy (trueness and precision) of measurement methods and results ISO 7000 Graphical symbols for use on equipment - Index and synopsis ISO 13400 Road vehicles - Diagnostic communication over Internet Protocol (DoIP) ISO 15031 Road vehicles - Communication between vehicle and external equipment for emissions-related diagnostics ISO 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 ISO 15031-7 Road vehicles - Communication between vehicle and external equipment for emissions-related diagnostics - Part 7: Data link security ISO 15765-4 Road vehicles - Diagnostic communication over Controller Area Network (DoCAN) - Part 4: Requirements for emissions-related systems ISO 27145 Road vehicles - Implementation of World-Wide Harmonized On-Board Diagnostics (WWH-OBD) communication requirements SAE J1708 Serial data communication between microcomputer systems in heavy-duty vehicle applications SAE J1939 Commercial Vehicle Control System Area Network (CAN) communication protocol SAE J1939-13 Off-board diagnostic connector SAE J1939-73 Application layer - Diagnostics SAE J2186 EE data link security ASTM E 29-06B Practice for using significant digits in test data to determine conformance with specifications ASTM F 1471-93 Test method for air cleaning performance of a high-efficiency particulate air-filter system EN 1822-1 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 aging cycle the vehicle or engine operation (speed, load, power) to be executed during the durability operation test 3.2 engine (engine family) type test the type approval test of new product that is expected to be put on the market after completion of the design of an engine type (engine family) to verify whether the product meets the technical requirements of this standard 3.3 vehicle type test the type approval test of new trial-manufactured product after completion of a vehicle type design to verify whether the product meets the technical requirements of this standard 3.4 auxiliary emission strategy, AES an emission 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 and/or operating conditions and only remains operational as long as those conditions exist 3.5 base emission strategy, BES an emission strategy that is active throughout the speed and load operating range of the engine unless an AES is activated 3.6 continuous regeneration the regeneration process of an exhaust after-treatment system that occurs either permanently or at least once per World Harmonised Transient Cycle (WHTC) hot test 3.7 crankcase 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 3.8 critical emission-related components the following components which are designed primarily for emission control: fuel supply system, intake system, exhaust after-treatment system, the engine electronic control unit (ECU) and its associated sensors and actuators, and the exhaust gas recirculation system (EGR) including all related filters, coolers, control valves and tubing 3.9 critical emission-related maintenance the maintenance to be performed on critical emission-related components 3.10 defeat strategy an emission strategy that does not meet the performance requirements for a base or auxiliary emission strategy as specified in this standard 3.11 deNOx system an exhaust after-treatment system designed to reduce emissions of oxides of nitrogen (NOx) (e.g. passive and active lean NOx catalysts, NOx absorbers and selective catalytic reduction (SCR) systems) 3.12 diagnostic trouble code, DTC a numeric or alphanumeric identifier which identifies or labels a malfunction 3.13 element of design any element of the engine system; any control system, including: ECU software; electronic control systems; and computer logic; any control system calibration; the results of any interaction of systems 3.14 emission control monitoring system the system that ensures correct operation of the NOx control measures implemented in the engine system according to the requirements of Annex G; the emission control system means the elements of design and emission strategies developed or calibrated for the purpose of controlling emissions 3.15 emission related maintenance the maintenance which substantially affects emissions or which is likely to affect emissions deterioration of the vehicle or the engine during normal in-use operation 3.16 emission strategy an element or set of elements of design that is incorporated into the overall design of an engine system or vehicle and used in controlling emissions 3.17 engine after-treatment system family a manufacturer’s grouping of engines that comply with the definition of engine family, but which are further grouped into engines utilising a similar exhaust after-treatment system 3.18 engine family a manufacturer’s grouping of engines which through their design, as defined in Clause 8 of this standard, have similar exhaust emission characteristics 3.19 engine system the engine, the emission control system and the communication interface (hardware and messages) between the engine system electronic control unit or units (ECU) and any other powertrain or vehicle control unit

Foreword iii 1 Application scope 2 Normative references 3 Terms and definitions 4 Pollution control requirements 5 Engine (Vehicle) nameplate 6 Technical requirements and tests 7 Installation on the vehicle 8 Engine family and parent engine 9 Requirements and inspection for newly produced vehicles 10 In-service conformity requirements and inspection 11 Standard implementation Annex A (Normative) Type test materials Annex B (Informative) Format of type test reports Annex C (Normative) Standard cycle test procedure for engine Annex D (Normative) Specifications of reference fuels Annex E (Normative) Requirements to Off-Cycle Emissions (OCE) tests Annex F (Normative) On-board diagnostic systems (OBD) Annex G (Normative) Requirements to ensure the correct operation of NOx control measures Annex H (Normative) Durability of engine system Annex I (Normative) Assurance requirements and checking of conformity of production Annex J (Normative) Technical requirements for in-service conformity Annex K (Normative) Actual road driving measurement method (PEMS) Annex L (Normative) Measurement method of pollutant emissions by chassis dynamometer on complete vehicle Annex M (Normative) Specific requirements for type test of liquefied petroleum gas or natural gas fuelled engines and vehicles Annex N (Normative) Technical requirements for diesel-gas dual-fuel engines and vehicles Annex O (Normative) Type test of replacement exhaust after-treatment devices as separate technical units Annex P (Normative) Access to vehicle OBD and vehicle maintenance information Annex Q (Normative) Technical requirements and communication data formats of on-board remote emission management terminal