ChinaAutoRegs\uff5cGB 20890-2007 \u82f1\u6587\u7248\/English\/\u7ffb\u8bd1\/\u91cd\u578b\u6c7d\u8f66\u6392\u6c14\u6c61\u67d3\u7269\u6392\u653e\u63a7\u5236\u7cfb\u7edf \u8010\u4e45\u6027\u8981\u6c42\u53ca\u8bd5\u9a8c\u65b9\u6cd5
\nTest Procedures and Requirement of Durability of Emission Control Systems for Heavy-duty Vehicles<\/p>\n
\n1. SCOPE<\/p>\n
This Standard stipulates the test procedures and durability requirements of emission control systems for heavy-duty vehicles.<\/p>\n
The Standard applies to the durability tests of emission control systems for the type approval test and production conformity inspection of Category M2, M3, N2 and N3 motor vehicles fitted with exhaust after-treatment devices and at a designated speed of more than 25 km\/h, as well as Category M1 motor vehicles with a total mass greater than 3,500 kg.<\/p>\n
When the type approval test and the production conformity inspection in accordance with GB 14762-2002, Phase II of GB 17691-2001 and Phase III of GB 17691-2005 are carried out on motor vehicles fitted with exhaust after-treatment devices, they should also meet the durability requirements of emission control systems stipulated in the Standard:<\/p>\n
The Standard can be executed using the exhaust after-treatment device, which uses a variety of independent techniques to carry out the type approval test.<\/p>\n
2. NORMATIVE REFERENCES<\/p>\n
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time this standard is published, all the applicable standards are valid. All the standards are subject to subsequent amendments, parties using these standards are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.<\/p>\n
GB 14762-2002 Emission limits and measurement methods for exhaust pollutants from positive ignition (P.I.) engines of vehicles and vehicles equipped with P.I. engines.
\nGB 17691-2001 Emission limits and measurement methods for exhaust pollutants from vehicle compression-ignition engines
\nGB 17691-2005 Emission limits and measurement methods for exhaust pollutants from vehicle compression-ignition, gas fuelled ignition engines (China Phases III, IV, V)
\nGB 17930 Unleaded petrol (gasoline) for motor vehicles
\nGB 18047-2000 Compressed natural gas as vehicle fuel
\nGB 19159-2003 Automotive liquefied petroleum gas
\nGB\/T 5181-2001 Automotive emission \u2212 Terms and definitions
\nGB\/T 12548-1990 Motor vehicles \u2212 Speedometer and odometer \u2212 Calibration method
\nGB\/T 12534-1990 Motor vehicle \u2212 General rules of the road test method
\nGB\/T 12678-1990 Reliability running test method for automobiles
\nGB\/T 12679-1990 Motor vehicles \u2212 Durability running \u2212 Test method
\nGB\/T 15089-2001 Classification of power-driven vehicles and trailers
\nGB\/T 18297-2001 Performance test code for road vehicle engines
\nGB\/T 19055-2003 Reliability test methods for motor vehicle engines
\nGB\/T 19147-2003 Automobile diesel fuels<\/p>\n
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