Standard No.:	GB 18352.6-2016
English Name:	Limits and measurement methods for emissions from light-duty vehicles(CHINA 6)
Chinese Name:	轻型汽车污染物排放限值及测量方法（中国第六阶段）
Chinese Classification:	Z64    Discharge standard for mobile pollution sources
Professional Classification:	GB    National Standard
ICS Classification:	13.040.50 13.040.50    Transport exhaust emissions 13.040.50
Issued by:	MEP and AQSIQ
Issued on:	2016-12-23
Implemented on:	2020-7-1
Status:	valid
Superseding:	GB 18352.5-2013 Limits and measurement methods for emissions from light-duty vehicles（CHINA 5）
Language:	English
File Format:	PDF
Word Count:	178500 words
Price(USD):	950.0
Delivery:	via email in 1 business day

1 Scope This standard is applicable to the light-duty vehicles, including hybrid electric vehicles, powered by positive-ignition engines or compression-ignition engines, with a maximum design speed  50 km/h. This standard specifies the limits and measurement methods for exhaust emissions at normal and low temperatures, real driving emissions (RDE), crankcase emissions, evaporative emissions and refueling emissions, and technical requirements and measurement methods for the durability of pollution control devices and on-board diagnostic (OBD) systems of light-duty vehicles equipped with positive-ignition engines. This standard specifies the limits and measurement methods for exhaust emissions at normal and low temperatures, real driving emissions and crankcase emissions, and technical requirements and measurement methods for the durability of pollution control devices and on-board diagnostic (OBD) systems of light-duty vehicles equipped with compression-ignition engines. This standard specifies the requirements and method for type test of light-duty vehicles, check requirements and determination methods of conformity of production and in-service conformity. This standard also specifies the special requirements for vehicles fuelled with liquefied petroleum gas (LPG) or natural gas (NG). This standard also specifies the type test procedure for replacement pollution control devices as separate technical units intended to be fitted on light-duty vehicles with respect to pollutant emissions. This standard also stipulates the technical requirements for vehicles that use a reagent for the exhaust after-treatment system and the procedure for emission test of vehicles equipped with periodically regenerating systems. At the manufacturer's request, type test may be performed for Category M1, M2 and N2 vehicles with the maximum mass >3,500kg but 4,500kg in accordance with this standard. If a vehicle covered by this standard has passed the type test in accordance with GB 17691 (China VI), such vehicle may be exempted from type test according to this standard. The light-duty vehicles fuelled by the fuel types that are not contained in Annex K shall also comply with the requirements of this standard. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For undated references, the latest edition of the referenced document applies. GB 1495 Limits and measurement methods for noise emitted by accelerating motor vehicles GB 3847 Limits and measurement methods for exhaust smoke from C.I.E. (Compression Ignition Engine) and vehicle equipped with C.I.E. GB 7258 Safety specifications for power-driven vehicles operating on roads GB/T 15089 Classification of power-driven vehicles and trailers GB 17691 Limits and measurement methods for exhaust pollutants from compression ignition and gas fuelled positive ignition engines of vehicles (III, IV, V) GB18285 Limits and measurement methods for exhaust pollutants from vehicles equipped ignition engine under two-speed idle conditions and simple driving mode conditions GB/T 19001 Quality management systems - Requirements GB/T 27630 Guideline for Air Quality Assessment of Passenger Car HJ/T 390 Technical Requirement for Environmental Protection Product - Control System of Fuel Evaporative Pollutants from Vehicle WITH Gasoline Engine HJ 509 Determination of Platinum, Palladium and Rhodium loading in the vehicle-used ceramic catalytic converters Inductive Coupled Plasma-Optical Emission Spectrometry and Inductive Coupled Plasma-Mass Spectrometry ISO 2575 Road vehicles - Symbols for controls, indicators and tell-tales ISO 8422-1991 Sequential sampling plans for inspection by attributes ISO 15031-7 Road vehicles - Communication between vehicle and external equipment for emissions-related diagnostics - Part 7: Data link security (dated March 15, 2001) EN 1822 High efficiency air filters (EPA, HEPA and ULPA) 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 light-duty vehicle vehicle of Category M1, M2 and N1 with the maximum mass of not exceeding 3,500kg 3.2 vehicle of Category M1, M2, N1 and N2 according to GB/T 15089, vehicle of Category M1 refers to the passenger vehicle with no more than 9 seats, including the driver's seat vehicle of Category M2 refers to the passenger vehicle with more than 9 seats including the driver's seat, and with the maximum mass of not exceeding 5,000kg vehicle of Category N1 refers to the goods vehicle with the maximum mass of not exceeding 3,500kg vehicle of Category N2 refers to the goods vehicle with the maximum mass of more than 3,500kg but not more than 12,000kg 3.3 vehicle of category I vehicle of Category M1 with no more than 6 seats including the driver's seat, and with the maximum mass of not exceeding 2,500kg 3.4 vehicle of category II all vehicles covered by this standard except those of category I 3.5 hybrid electric vehicle, HEV vehicle that is able to, at least, obtain power from both of the following on-board energy storage device: ——consumable fuel; ——rechargeable electrical energy/power storage device 3.6 bi-fuel vehicle vehicle that can run on both gasoline and a gaseous fuel, but is designed to run on only one fuel at a time 3.7 mono-fuel gas vehicle vehicle that is designed to run on a gaseous fuel (i.e. LPG or NG), or vehicle that can run on both gaseous fuel (LPG or NG) and gasoline, but gasoline is intended for emergency purposes or engine starting only, and the gasoline tank shall have a volume of not exceeding 15L 3.8 reference mass, RM unladen kerb mass of the vehicle increased by a uniform figure of 100kg 3.9 test mass, TM sum of the vehicle reference mass, mass of optional equipment ( ) and the representative load mass (2) 3.10 maximum mass technically permissible maximum mass declared by the vehicle manufacturer 3.11 gaseous pollutants exhaust emissions of carbon monoxide (CO), oxides of nitrogen (NOx), total hydrocarbons (THC), non-methane hydrocarbons (NMHC) and nitrous oxide (N2O) Oxides of nitrogen (NOx) is expressed in nitrogen dioxide (NO2) equivalent; Total hydrocarbons (THC) and non-methane hydrocarbons (NMHC) assume a ratio of: (a) C1H1.85 for gasoline, (b) C1H1.86 for diesel, (c) C1H2.525 for LPG, (d) CH4 for NG. 3.12 non-methane hydrocarbons, NMHC total hydrocarbons (THC) except for methane (CH4) 3.13 total hydrocarbons, THC all volatile compounds that can be detected by the flame ionization detector (FID) 3.14 particulate matter, PM components of exhaust gas which are collected from the diluted exhaust gas at a maximum temperature of 52℃ by means of the prescribed filter according to the test method described in Appendix CD, Annex C 3.15 particle numbers (PN) total number of particles of a diameter greater than 23nm present in the diluted exhaust gas from which the volatile materials have been removed, according to the test method described in Appendix CD, Annex C 3.16 exhaust emissions gaseous pollutants and particulate matters emitted from the vehicle tailpipe 3.17 evaporative emissions hydrocarbon vapors lost from the fuel (gasoline) system of a motor vehicle other than those from tailpipe emissions, including: (1) tank breathing losses (gas exchange losses) are hydrocarbon emissions caused by temperature changes in the fuel tank, expressed in C1H2.33 equivalent; (2) hot soak losses are hydrocarbon emitted by the fuel system of a stationary vehicle after a period of driving, expressed in C1 H2.20 equivalent 3.18 refueling emissions hydrocarbon emitted or leaked from the vehicle during refueling process (assuming a ratio of C1H2.33) 3.19 crankcase spaces in or external to an engine which are connected to the oil sump by internal or external ducts through which gases or vapor can escape 3.20 cold start device device that temporarily enriches the air/fuel mixture of the engine thus assisting the engine to start 3.21 starting aid device which assists engine start without enrichment of the air/fuel mixture of the engine, e.g. glow plug, injection change or ignition timing change, etc. 3.22 engine displacement nominal engine swept volume for reciprocating piston engines; twice the nominal engine swept volume for rotary piston engines, 3.23 pollution control devices devices of a vehicle that control or limit exhaust and evaporative emissions. 3.24 onboard diagnostic system, OBD on-board diagnostic system for emission control, which is capable of identifying the likely area of malfunction by means of malfunction codes stored in electronic control unit (ECU) memory 3.25 onboard refueling vapor recovery, ORVR pollution control devices, fitted to a vehicle, to control emissions of oil vapor (hydrocarbon) during refueling process 3.26 malfunction indicator light, MIL visible indicator light that clearly informs the driver of the vehicle in the event of a malfunction of any emission-related component connected to the OBD system, or of the OBD system itself 3.27 misfire lack of combustion in the engine cylinder due to ignition malfunction, poor gas mixture, poor compression or any other cause 3.28 defeat device device or strategy which measures, senses or responses vehicle speed, engine speed, transmission gear, temperature, altitude, manifold vacuum or any other parameter for the purpose of activating, modulating, delaying or deactivating the operation of any component of the emission control system, that reduces the effectiveness of the emission control system under conditions which may reasonably be expected to be encountered in normal vehicle operation and use Such measure may not be considered a defeat device if: (1) the need for the device is justified in terms of protecting the engine against damage or accident and for safe operation of the vehicle; or (2) the device does not function beyond the requirements of engine starting; or (3) conditions are substantially included in the Type I, II, III, IV, VI and VII test procedures. 3.29 reagent any product other than fuel that is stored on board and is provided to the exhaust after-treatment system upon request of the emission control system 3.30 periodically regenerating system pollution control device (e.g. catalytic converter, particulate trap, etc.) that requires a periodically regenerating process in no more than 4,000km of normal vehicle operation For a periodically regenerating system, during cycles where regeneration occurs, the emission limits specified in 5.3.1.4 may be exceeded. If a regeneration of a pollution control device occurs at least once per Type I test and that has already regenerated at least once during vehicle preparation cycle, it will be considered as a continuously regenerating system which does not require a special test procedure. Annex Q does not apply to continuously regenerating systems. The test procedure specific to periodically regenerating systems will not apply if the manufacturer provides data to the competent authority of environmental protection (CAEP) that, during cycles where regeneration occurs, emissions remain below the limits given in 5.1.3.4, and the manufacturer will provide a written statement to the CAEP. 3.31 real driving emission, RDE emissions in real driving conditions 3.32 portable emission measurement system, PEMS portable emission measurement system meeting the requirements specified in Appendix DB 3.33 properly maintained and used for the purpose of a test vehicle, that such a vehicle satisfies the criteria for acceptance of a selected vehicle laid down in OA.2, Annex O 3.34 access to information availability of all vehicle OBD and vehicle repair and maintenance information, required for the inspection, diagnosis, repair and maintenance of the vehicle 3.35 fuel type of fuel normally used by the engine: − gasoline − LPG (liquefied petroleum gas) − NG (natural gas) − both gasoline and LPG − both gasoline and NG − diesel fuel wherein, liquid fuel refers to gasoline or diesel, while gaseous fuel refers to LPG or NG 3.36 useful life durability distance or period assuring normal operations of the vehicles specified in this standard, whichever occurs first 3.37 full life whole life circle of the vehicle from being manufactured, put into operation to scrapped 3.38 emission families combination of several vehicle types with similar emission characteristics, consisting of the reference vehicle types subject to type test and the vehicle types extended in accordance with the 6.1 to 6.5 3.39 predominant mode single mode that is always selected when the vehicle is switched on regardless of the operating mode selected when the vehicle was previously shut down 3.40 rechargeable electric energy storage system, REESS rechargeable electric energy storage system 4 Pollution control requirements 4.1 Requirements for type test 4.1.1 The vehicles manufactured and imported by vehicle manufacturers shall be subjected to type test according to this standard. The type test of a vehicle type consists of exhaust emissions, real driving emissions, crankcase emissions, evaporative emissions, refueling emissions and durability of pollution control devices, as well as its on-board diagnostic (OBD) system, etc. 4.1.2 For the tests described in Clause 5 of this standard, a vehicle representative of the vehicle type to be subjected to type test shall be selected. 4.1.3 For the tests described in J.4 and J.5 in Annex J, a vehicle representative of the vehicle family fitted with the OBD system shall be selected. If the vehicle manufacturer cannot ensure that the selected vehicle fully represents the vehicle type or vehicle family described in Appendix JB, Annex J, an additional vehicle shall be provided to be subject to the tests specified in J.4 and J.5. 4.1.4 If a vehicle type meets all technical requirements described in Clause 5, it passes the type test. A format of type test report is included in Annex B. 4.1.5 The vehicle manufacturer or testing organization shall seal and preserve the sample vehicle of type test for one year for future reference, and after one year the ECU of sample vehicle shall be sealed and preserved for future reference. 4.1.6 The CAEP may conduct confirmatory check for the type-test sample vehicles and results in accordance with the procedure specified in Annex N. 4.2 Conformity of environmental production and in-service conformity

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Pollution control requirements 5 Type test 6 Extensions to type test 7 Conformity of production (COP) 8 In-service conformity 9 Implementation of this standard Annex A (Normative) Information on type test Annex B (Informative) Format of type test report Annex C (Normative) Test of exhaust emissions after a cold start at normal temperature (Type I test) Annex D (Normative) Test of real driving emissions (Type II test) Annex E (Normative) Test of crankcase emissions (Type III test) Annex F (Normative) Test of evaporative emissions (Type IV test) Annex G (Normative) Durability test of pollution control devices (Type V test) Annex H (Normative) Test of CO, THC and NOx exhaust emissions after a cold start at low temperature (Type VI test) Annex I (Normative) Test of refueling emissions (Type VII test) Annex J (Normative) On-board diagnostics (OBD) system Annex K (Normative) Technical requirements of reference fuels Annex L (Normative) Special requirements for vehicles fuelled with LPG or NG Annex M (Normative) Type test of replacement pollution control device as separate technical unit Annex N (Normative) Requirements for ensuring conformity of production Annex O (Normative) In-service conformity Annex P (Normative) Requirements for vehicles that use a reagent for the exhaust after-treatment system Annex Q (Normative) Emissions test procedure for a vehicle equipped with a periodically regenerating system Annex R (Normative) Hybrid electric vehicle (HEV) test