Standard No.:	GB 14621-2011
English Name:	Limits and measurement methods for exhaust pollutants from motorcycles and mopeds under two-speed idle conditions
Chinese Name:	摩托车和轻便摩托车排气污染物排放限值及测量方法（双怠速法）
Chinese Classification:	Z64    Discharge standard for mobile pollution sources
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2011-5-12
Implemented on:	2011-10-1
Status:	superseded
Superseded by:	GB 14622-2016 Limits and Measurement Methods for Motorcycle Pollutant Discharge (China stage IV)
Superseded on:	2018-7-1
Superseding:	GB 14621-2002 Limits and measurement methods for exhaust emissions from motorcycles and mopeds at idle speed
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	244.0
Delivery:	via email in 1 business day

1 Application Scope This standard specifies the limits and measurement methods for exhaust pollutants from motorcycle and moped under idle speed and high idle speed working conditions. This standard is applicable to type approval and production conformity inspection for motorcycle and moped equipped with spark-ignition engine and exhaust pollutants inspection for in-service vehicle.

Foreword 1 Application Scope 2 Normative References 3 Terms and Definitions 4 Pollutant Emission Control Requirements 5 Measurement Method for Exhaust Pollutants 6 Inspection Requirements for Single Gas Fuel and Dual-fuel Motorcycle 7 Judgment Rules of Inspection Result 8 Standard Implementation Appendix A (Normative) Measurement Methods under Two-Speed Conditions Appendix AA (Informative) Measurement Record of Exhaust Pollutants under Two-speed Conditions