HJ 437-2008: Technical specification for on-board diagnostic(OBD) system of compression ignition and gas fuelled positive ignition engines of vehicles

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Scope

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.
For N1 and N2 vehicles fitted with compression ignition (including gas fuelled positive
ignition) engines, if the OBD system type approval has been made in accordance with
GB 18352.3-2005, Limits and measurement methods for emissions from light-duty vehicles
(Ⅲ, Ⅳ). the type approval specified in this Standard may be omitted for their engines.

Basic Data

Standard ID	HJ 437-2008 (HJ437-2008)
Description (Translated English)	Technical specification for on-board diagnostic(OBD) system of compression ignition and gas fuelled positive ignition engines of vehicles
Sector / Industry	Environmental Protection Industry Standard
Classification of Chinese Standard	T10
Classification of International Standard	43.060.01
Word Count Estimation	27,288
Date of Issue	2008-06-24
Date of Implementation	2008-07-01
Quoted Standard	GB 17691; GB 18352.3-2005; HJ 438-2008; ISO 2575; ISO 15031-3; ISO 15031-4; ISO 15031-5; ISO 15031-6-2005; ISO 15765-4; SAE J1939; SAE J1939-13; SAE J1939-73; SAE J2012
Adopted Standard	2005/55/EC, MOD; 2005/78/EC, MOD; 2006/51/EC, MOD
Regulation (derived from)	Department of Environmental Protection Notice No. 25 of 2008
Issuing agency(ies)	Ministry of Ecology and Environment
Summary	This standard specifies equipped with compression-ignition engines and compression ignition engine car, fitted for natural gas (NG) or liquefied petroleum gas (LPG) as a fuel ignition engine ignition engines of motor vehicles and vehicle diagnostic (OBD) system technology requirements and test methods. This standard applies to the design speed greater than 25 km/h of M (2), M (3), N (1), N (2) and N (3) class and the total mass greater than 3500kg of M (1) class vehicles equipped with compression ignition (including gaseous fuel ignition) engines and vehicle OBD system type approval and production consistency checks.