Detail of GB 3847-2018

Introduction of GB 3847-2018

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is formulated with a view to implementing the Environmental protection law of the People's Republic of China and the Law of the People's Republic of China on the prevention and control of atmospheric pollution, controlling the emissions from vehicles and improving the ambient air quality. This standard is a revision of GB 3847-2005 Limits and measurement methods for exhaust smoke from C.I.E. (Compression Ignition Engine) and vehicle equipped with C.I.E. and HJ/T 241-2005 The principle and method of confirm limits for exhaust smoke from lug-down mode for in-use motor vehicles with C.I.E. (Compression Ignition Engine), by reference to HJ/T 395-2007 Equipment specifications and quality control requirements for in-use vehicles equipped with compression ignition engine in free accelerating smoke test and HJ/T 292-2006 Equipment specifications and quality control requirements for diesel vehicles in lug down smoke test. This standard specifies the limits and measurement methods for emissions from diesel vehicles under free acceleration and lugdown cycle. Moreover, it also specifies the methods and judgment bases for appearance inspection and OBD inspection of diesel vehicles. This standard is applicable to the inspection for new produced diesel vehicle at end of production line, inspection for register vehicle, and inspection for in-use vehicle, and it is also applicable to other vehicles equipped with compression ignition engine. This standard is not applicable to low speed trucks and three-wheeled vehicles. The main changes of this standard with respect to GB 3847-2005 Limits and measurement methods for exhaust smoke from C.I.E. (Compression Ignition Engine) and vehicle equipped with C.I.E. are as follows: ——The content of appearance inspection, OBD inspection, etc. is added; ——The inspection procedure and inspection items are added; ——Limits and measurement methods for emissions of nitrogen oxides are added, and limit of smoke emission is adjusted; ——The inspection record items and inspection software requirements are added; ——The content and methods of environmental protection supervision test are specified; ——Type approval requirements for compression ignition engine and new produced vehicle are deleted. This standard was revised by the Department of Air Environment and the Department of Laws and Regulations and Standards under the Ministry of Ecology and Environment. This standard was approved by the Ministry of Ecology and Environment on September 27, 2018. This standard shall be implemented from May 1, 2019, and GB3847-2005 and HJ/T241-2005 shall be abolished simultaneously from the implementation date of this standard. The relevant provincial standards on emission inspection shall be abolished since the implementation date of this standard. The Ministry of Ecology and Environment is responsible for the explanation of this standard. Limits and measurement methods for emissions from diesel vehicles under free acceleration and lugdown cycle 1 Application scope This standard specifies the limits and measurement methods for emissions from diesel vehicles under free acceleration and lugdown cycle as well as the methods and judgment bases for appearance inspection and OBD inspection of diesel vehicles. This standard is applicable to the inspection for new produced diesel vehicle at end of production line, inspection for register vehicle, and inspection for in-use vehicle, and it is also applicable to other vehicles equipped with compression ignition engine. This standard is not applicable to low speed trucks and three-wheeled vehicles. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For undated references, the valid versions shall apply. GB/T 5181-2001 Automotive emission - Terms and definitions GB 7258 Technical specifications for safety of power-driven vehicles operating on roads GB 17691 Limits and measurement methods for exhaust pollutants from compression ignition and gas fueled positive ignition engines of vehicles GB 17691-2018 Limits and measurement methods for emissions from diesel fueled heavy-duty vehicles (China VI) GB/T 17692 Measurement methods of net power for automotive engines GB 18352 Limits and measurement methods for emissions from light-duty vehicles GB 19147 Automobile diesel fuels HJ 437 Technical specification for on-board diagnostic (OBD) system of compression ignition and gas fueled positive ignition engines of vehicles HJ 845-2017 Measurement method and specifications for exhaust pollutants from in-use diesel vehicles by remote sensing method 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 net power net power of engine measured according to GB/T 17692 3.2 compression ignition engine engine operating according to compression ignition principle (e.g., diesel engine) 3.3 opacity meter instrument used for continuous measurement of optical absorption coefficient of exhaust gas, as specified in Appendix C 3.4 maximum rated engine speed the maximum full-load speed allowed by the diesel engine 3.5 minimum rated engine speed ——the maximum of the followings: 45% of the maximum rated engine speed; 1000r/min; the minimum idle speed; or ——lower speed required by the manufacturer 3.6 wheel power actually measured output power of the drive wheel when the vehicle is operating on the chassis dynamometer 3.7 maximum wheel power, MaxHP the maximum wheel power measured using the method specified in this standard 3.8 optical absorption coefficient, k coefficient indicating the attenuation of light beam by smoke exhaust per unit length, which is the product of the number (n) of particles per unit volume, the mean projected area (a) of particles and the extinction coefficient (Q) of particles 3.9 ringelmann blackness an representation method of smoke dust concentration obtained by comparing the color of exhaust emission pollutants with the ringelmann smoke chart; it is divided into levels 0~5, corresponding to six ringermann smoke charts: Level 0 is all white, Levels 1, 2, 3 and 4 are blackness of 20%, 40%, 60% and 80% respectively, and Level 5 is all black 3.10 nitrogen oxide, NOx nitrogen oxide emitted from the exhaust pipe, including nitrogen monoxide (NO) and nitrogen dioxide (NO2) 3.11 engine maximum speed, MaxRPM maximum speed of engine measured when flooring the accelerator pedal during the test specified in this standard 3.12 actual velocity of maximum wheel power, VelMaxHP actual velocity of the measured maximum wheel power during the power scan test specified in this standard 3.13 hybrid electric vehicle, HEV vehicle which is able to obtain power from at least the following two kinds of on-board energy storage devices: ——Consumable fuel; ——Rechargeable electric energy/energy storage device 3.14 vehicle emission inspection various emission inspections for vehicles in accordance with laws, regulations and standards, including inspection for new produced motor vehicle at end of production line, inspection for register vehicle, emission inspection for in-use vehicle and supervision test 3.15 in-use vehicle vehicle which has been registered and got license plate 3.16 inspection for new produced vehicle at end of production line environmental protection inspection for the new produced vehicle before leaving the factory or entering the country, which is also applicable to environmental protection inspection at the sales stage 3.17 inspection for register vehicle environmental protection inspection before or during the registration of vehicle 3.18 inspection for in-use vehicle inspection for the vehicle which has been registered, including periodical inspection for in-use vehicle, supervision test, and inspection for in-use vehicle before being transacted for registration change or registration transfer 3.19 supervision test supervision test for the new produced vehicle before leaving the factory, and supervision test for the in-use vehicle at the centralized parking site and maintenance site as well as on road 3.20 onboard diagnostic system; OBD computer information system installed on the vehicle and engine, which belongs to the pollution control device and shall have the following functions: a) diagnosing the faults that affect emission performance; b) displaying by the alarm system in case of fault; c) identifying the possible fault areas and providing off-line communication of information by the information stored in the memory of electronic control unit 3.21 vehicle environmental identification document; VEID motor vehicle environmental identification document specified by the Announcement on the work of disclosing environmental information of motor vehicles and non-road mobile machinery (GUOHUANGUIDAQI [2016] No.3), including the enterprise's declaration of compliance of the vehicle with emission standards and stages, basic vehicle information, environmental protection inspection information, pollution control device information, etc. 4 Inspection items 4.1 See Table 1 for the environmental protection inspection items of vehicles. 4.2 The entry inspection for new produced imported vehicle shall be carried out according to the inspection items specified in Table 1 and shall also meet the requirements of other standards, laws and regulations.   Table 1 Inspection items Inspection item Inspection for new produced vehicle at end of production line Inspection for entry of imported vehicle Inspection for register vehicle 1) Inspection for in-use vehicle 1) Appearance inspection (including inspection of pollution control device and checking of vehicle environmental identification document) Carried out Carried out Carried out Carried out 2) Onboard diagnostic system (OBD) inspection Carried out Carried out Carried out Carried out 3) Exhaust emission pollutants inspection Supervision test 4) Supervision test 4) Carried out Carried out 5) Notes: 1) The inspection for vehicles that meet the exemption requirements shall be carried out in accordance with the relevant exemption requirements. 2) Check if the pollution control device is in good condition. 3) It is applicable to vehicles equipped with OBD. 4) Supervision test for exhaust emission pollutants from hybrid vehicles shall be carried out in the maximum fuel consumption mode. 5) The inspections for registration change and transfer shall be carried out according to the relevant requirements. 5 Inspection process and requirements 5.1 Inspection for new produced vehicle at end of production line 5.1.1 The manufacturer shall ensure that the pollutant control devices of all vehicles at end of production line are consistent with the vehicle environmental identification document. 5.1.2 The manufacturer shall complete the inspection of onboard diagnostic system (OBD). Exhaust emission pollutants shall be inspected in lugdown mode for at least 1% of the annual production according to vehicle type (lugdown cycle may be adopted for all wheel drive vehicles and real time four wheel drive vehicles for which the two drive modes cannot be switched manually). Wherein, the minimum supervision test quantity is 15 vehicles per year; if the annual production is less than 15 vehicles, all vehicles shall be inspected. 5.1.3 See Figure 1 for the inspection process for new produced vehicle at end of production line. The inspection information shall be submitted in accordance with those specified in Appendix G. 5.1.4 The competent department of ecological environment may conduct all inspections such as appearance inspection, OBD inspection and exhaust emission pollutants inspection at end of production line. The appearance inspection shall be carried out by focusing on inspecting whether the pollution control device of vehicle is consistent with the content of vehicle environmental identification document. 5.1.5 For imported vehicles, the inspection for new produced vehicle at end of production line shall be completed and the inspection information shall be submitted to the competent department of ecological environment before entering the country. Figure 1 Process of environmental protection inspection for new produced vehicle 5.2 The inspection items for register vehicle shall be carried out in accordance with those specified in Table 1, and the inspection information shall be submitted in accordance with those specified in Appendix G. See Figure 2 for the inspection process. Figure 2 Process of inspection for register vehicle 5.3 The inspection items for in-use vehicle shall be carried out in accordance with those specified Table 1. Before the inspection, environmental protection on-line verification shall be carried out to check whether the vehicle has any environmental protection violation record. The inspection information shall be submitted in accordance with those specified in Appendix G. See Figure 3 for the inspection process.

Contents of GB 3847-2018

Foreword i 1 Application scope 2 Normative references 3 Terms and definitions 4 Inspection items 5 Inspection process and requirements 6 Appearance inspection 7 Onboard diagnostic system (OBD) inspection 8 Exhaust emission pollutants inspection 9 Data recording, storage and submission requirements 10 Emission monitoring of in-use vehicles 11 Standard implementation Appendix A (Normative) Free acceleration Appendix B (Normative) Lugdown cycle Appendix C (Normative) Characteristic and installation requirements of opacity meter Appendix D (Normative) Ringelmann smoke method Appendix E (Normative) Inspection procedures for onboard diagnostic (OBD) system Appendix F (Normative) Inspection report Appendix G (Normative) Reported data items in real time