| This standard was formulated for the purpose of implementing Environmental Protection Law of the People's Republic of China and Air Pollution Prevention and Control Law, guaranteeing the quality of emission testing and controlling pollution emission from vehicles with ignition engine, improving air quality and protecting human health. The standard provides specifications, technical requirements for functions and performance of major equipment for testing exhaust emission of in-use vehicle with ignition engine in transient loaded mode including chassis dynamometer, exhaust analyzer, flowmeter and sampling system. It also specifies basic requirements on the functions of computer control software, on testing items and methods for test stations to conduct routine check on equipment, on-site installation equipment and type approval equipment. The standard applies to manufacture and use of exhaust emission testing equipment for in-use vehicle with ignition engine in transient loaded mode and to type approval test. It is the first time the issue the standard. |
