Standard No.:	HJ 437-2008
English Name:	Technical specification for on-board diagnostic(OBD)system of compression ignition and gas fuelled positive ignition engines of vehicles
Chinese Name:	车用压燃式、气体燃料点燃式发动机与汽车车载诊断(OBD)系统技术要求
Chinese Classification:	T10    Automotive engines in general
Professional Classification:	HJ    Professional Standard - Environment
ICS Classification:	43.060.01 43.060.01    Internal combustion engines for road vehicles in general 43.060.01
Issued by:	Ministry of Environmental Protection
Issued on:	2008-06-24
Implemented on:	2008-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	13000 words
Price(USD):	140.0
Delivery:	via email in 1~5 business day

本标准规定了装用压燃式发动机汽车及其压燃式发动机、装用以天然气（NG）或液化石油气（LPG）作为燃料的点燃式发动机汽车及其点燃式发动机的车载诊断（OBD）系统技术要求及试验方法。
本标准适用于设计车速大于25km/h的M2、M3、N1、N2和N3类总质量大于3500kg的M1类机动车装用的压燃式（含气体燃料点燃式）发动机及其车辆的OBD系统的型式核准和生产一致性检查。