QC/T 691-2011: Technical specification of single-fuel natural gas vehicle engine

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Scope

This standard specifies single-fuel natural gas vehicle engine (including compressed
natural gas engine and liquid spray free liquefied natural gas engine) in terms of technical
requirements, test methods, inspection rules and marking, packaging, transport and storage.
This standard is applicable to single-fuel vehicle engine for the following. nominal
working pressure of compressed natural gas cylinder is less than or equal to 20MPa and for
which nominal working pressure of liquefied natural gas cylinder is less than or equal to
1.6MPa.

Basic Data

Standard ID	QC/T 691-2011 (QC/T691-2011)
Description (Translated English)	Technical specification of single-fuel natural gas vehicle engine
Sector / Industry	Automobile and Vehicle Industry Standard (Recommended)
Classification of Chinese Standard	T47
Classification of International Standard	43.060
Word Count Estimation	21,267
Date of Issue	2011-05-18
Date of Implementation	2011-08-01
Older Standard (superseded by this standard)	QC/T 691-2002
Quoted Standard	GB/T 1147.1; GB/T 1859; GB 7258; GB 11340; GB 14023; GB 14097; GB 17691; GB/T 17692; GB/T 17895; GB 18047; GB 18285; GB/T 18297; GB 18352.3; GB/T 19055; GB/T 19204; GB/T 19240; GB/T 20734; GB 20890; GB/T 23335; HJ 438; QC/T 245; QC/T 526; QC/T 755; QC/T 901
Regulation (derived from)	Ministry of Industry and Information Technology Bulletin No. 13 of 2011
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard specifies a single vehicle gas fueled engines (including compressed natural gas and liquefied without liquid injection gas engines) the technical requirements, test methods, inspection rules and signs, packaging, transportation, storage. This standard applies to compressed natural gas tank is not greater than the nominal working pressure 20MPa and liquefied natural gas storage cylinders nominal working pressure is less than 1. 6MPa vehicle with a single fuel engine.