Download or read book HJ 437 2008 Translated English of Chinese Standard HJ437 2008 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2014-03-17 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the technical specification and test method for on-board diagnostic (OBD) system - compression ignition engines and vehicles with such engines; and positive ignition engines and vehicles with such engines which are fuelled by natural gas (NG) or liquid petroleum gas (LPG). This Standard applies to the type approval and production consistency inspection for the OBD system of the compression ignition (including gas fuelled positive ignition) engines; and the relevant vehicles of classes M2, M3, N1, N2 and N3 which are designed for speed greater than 25 km/h; and vehicles of class M1 which have total mass greater than 3500 kg.

Download or read book HJ 438 2008 Translated English of Chinese Standard HJ438 2008 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2014-03-13 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the durability requirements (including measurement methods) for vehicle adopted with compression ignition engine and that adopted with the spark ignition engine fuelled with natural gas (NG) or liquefied petroleum gas (LPG) as well as emission control system of such engines. This Standard is applicable to the type approval of the emission control system of compression ignition (including gas fuelled positive ignition) engines equipped in M2, M3, N1, N2 and N3 vehicles with design speed greater than 25km/h as well as M1 vehicles with total mass greater than 3500kg. Where N1 and M2 vehicles adopted with compression ignition (including gas fuelled positive ignition) engines meet the durability requirements of.