Standard No.:	QC/T 691-2011
English Name:	Technical specification of Single-fuel natural gas vehicle engine
Chinese Name:	车用天然气单燃料发动机技术条件
Chinese Classification:	T47    New energy vehicle and other automobiles
Professional Classification:	QC    Professional Standard - Automobile
Issued by:	MIIT
Issued on:	2011-5-18
Implemented on:	2011-8-1
Status:	valid
Superseding:	QC/T 691-2002 Specifications for natural gas single fuel engine for vehicle
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

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.

Foreword .................................................................................................................................... I 1 Scope ................................................................................................................................... 2 Normative References ......................................................................................................... 3 Terms and Definitions ......................................................................................................... 4 Technical Requirements ...................................................................................................... 5 Test Methods ....................................................................................................................... 6 Inspection Rules .................................................................................................................. 7 Marking, Packaging, Transportation and Storage................................................................ Appendix A (Normative) Main Parameters for Single-Fuel Natural Gas Vehicle Engine ........ Appendix B (Normative) Vehicle Natural Gas Quality Requirements ....................................