Standard No.:	QC/T 239-2015
Chinese Name:	商用车辆行车制动器技术要求及台架试验方法
English Name:	Specifications and bench test methods for commercial vehicle service brake
Professional Classification:	QC Professional Standard - Automobile
ICS Classification:	43.040.40 Braking systems
Issued by:
Issued on:	2015-04-30
Implemented on:	2015-10-01
Status:	VALID
Replace:	QC/T239-1997
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the terminologies and definitions, performance requirements as well as bench test methods of commercial vehicle service brake assembly.
This standard applies to the service brake assembly for Categories M2, M3 and N vehicles specified in GB/T 15089 as well as friction lining (brake block) assembly. The brake assembly for Category O vehicles may also refer to the provisions of this standard.

2 Normative References

The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this standard. For undated references, the latest edition (including any amendments) applies to this standard.
GB/T 5620 Road Vehicles - Braking of Automotive Vehicles and Their Trailers C Vocabulary
GB/T 15089 Classification of Power - Driven Vehicles and Trailers
QC/T 556 Automotive Brake - Temperature Measurement and Thermocouple Attachment

3 Terminologies and Definitions

For the purposes of this standard, the terminologies and definitions specified in GB/T 5620 and the following ones apply.
3.1
Braking period
The time from stating a braking to the next braking in a continuous braking procedure.