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QC/T 239-2015 English PDF (QCT239-2015)

QC/T 239-2015 English PDF (QCT239-2015)

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QC/T 239-2015: Specifications and bench test methods for commercial vehicle service brake

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.
ICS 43.040.40
T24
INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
Replacing QC/T 239-1997 and QC/T 479-1999
Specifications and Bench Test Methods
for Commercial Vehicle Service Brake
ISSUED ON. APRIL 30, 2015
IMPLEMENTED ON. OCTOBER 1, 2015
Issued by Ministry of Industry and Information Technology of
the People's Republic of China
QC
3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes.
Contents
Foreword ... I
1 Scope ... 1
2 Normative References ... 1
3 Terminologies and Definitions ... 1
4 Performance Requirements ... 4
5 Relevant Requirements for Test ... 6
6 Test Preparation ... 7
7 Test Methods and Conditions ... 8
Appendix A (Normative) Evaluation Method of Braking Torque ... 14
Announcement of the Ministry of Industry and Information
Technology of the People's Republic of China in 2015No.28
The Ministry of Industry and Information Technology hereby approves 876 professional standards (see Attachment 1 for the standard numbers, names, main contents and implementation dates) such as "Cryogenic Pilot-operated Breathing Valve", including 286 mechanical professional standards, 17 automobile professional standards, 19 shipping professional standards, 5 aviation professional standards, 24 chemical professional standards, 58 metallurgy professional standards, 146 non-ferrous professional standards, 16 rare earth professional standards, 7 petrochemical professional standards, 73 light professional standards, 10 civil explosive professional standards, 77 electronic professional standards and 138 communication professional standards; 2 light professional standard amendments (see Attachment 2) including "Gel Ink Ball Pens and Refills"; 12 non-ferrous metal professional standard samples (see Attachment 3 for the standard sample catalogue and composition content) including "Aluminum Alloy 6061 Spectrum Single-point Standard Sample". Professional standard amendment and professional standard samples shall be implemented from the issuance date.
The above mechanical professional standards were published by China Machine Press, shipping professional standards were organized and published by China Technology Research & Economy Development Institute, aviation professional standards were organized and published by China Aero Polytechnology Establishment, chemical professional product standards were published by Chemical Industry Press, metallurgy professional standards were published by Metallurgical Industry Press, non-ferrous metal and rare earth professional standards were published by China Standards Press, petrochemical professional standards were published by China Petrochemical Press, light industry professional standards were published by China Light Industry Press, chemical and non-ferrous metal engineering construction professional standards and automobile professional standards were published by China Planning Press, civil explosive professional standards were organized and published by China Ordnance Industrial Standardization Research Institute, electronic professional standards were organized and published by Electronics Standardization Institute of the Ministry of Industry and Information Technology of the People's Republic of China, communication professional standards were published by Posts & Telecom Press, communication engineering construction professional standards were published by Beijing University of Posts and Telecommunications Press.
Attachment. the numbers, names and implementation dates of 17 automobile professional standards.
Ministry of Industry and Information Technology of the People's Republic of China April 30, 2015
Attachment.
Numbers, Names and Implementation Dates of 17 Automobile Professional Standards SN. Standard No. Standard name
Superseded standard
No.
Implementation
date
SN. Standard No. Standard name
Superseded standard
No.
Implementation
date
287 QC/T 991-2015
Passenger Cars - Light Alloy
Wheels - 90??Impact Test
Procedure
2015-10-01
288 QC/T 717-2015
Road vehicle -Wheels-
Requirements and Measuring
Methods of Radial and Lateral
Run-out
QC/T 717-2004
ISO 16833. 2006,
MOD
2015-10-01
289 QC/T 52-2015 Refuse Collection Vehicle QC/T 52-2000 2015-10-01
290 QC/T 652-2015 Suction-type Sewer Scavenger QC/T 652-2000 2015-10-01 291 QC/T 992-2015
Municipal Emergency Service
Vehicle
2015-10-01
292 QC/T 993-2015 Explosive Transport Vehicle 2015-10-01
293 QC/T 994-2015 Demountable Tanker Carrier 2015-10-01
294 QC/T 995-2015
Hydrostatic Drive Modular
Transporter
2015-10-01
295 QC/T 764-2015
Road Vehicles-Hydraulic
Braking System-Simple Flare
Pipes, Tube Tapped Holes Male
Fittings and Hose End Fittings
QC/T 764-2006 2015-10-01
296 QC/T 239-2015
Specifications and Bench Test
Methods for Commercial
Vehicle Service Brake
QC/T 239-1997
QC/T 479-1999
2015-10-01
297 QC/T 996-2015
Specifications and Bench Test
Methods of Automobile Air
Dryer
2015-10-01
298 QC/T 997-2015
Structural Requirements of
Integral Body for Buses
2015-10-01
299 QC/T 998-2015
The Technical Specification of
Automotive Cabin Air Filter
2015-10-01
300 QC/T 999-2015
Specification of By-pass Luboil
Filter Assembly for
Automobiles
2015-10-01
QC/T
1000.1-2015
Performance Requirements and
Test Methods of Non-woven on
Automotive Filter-Part
1.Non-woven of Filters for
Passenger Compartment
2015-10-01
QC/T
1000.2-2015
Performance Requirements and
Test Methods of Non-woven on
Automotive Filter-Part 2.
Non-woven of Filters for Air
2015-10-01
SN. Standard No. Standard name
Superseded standard
No.
Implementation
date
Filter
303 QC/T 1001-2015
Evaluation of Filterability of
Vehicle Oil Filter - Particle
Counting Method
2015-10-01
Foreword
This standard was drafted in accordance with the rules given in "Directives for Standardization-Part 1. Structure and Drafting of Standards" (GB/T 1.1-2009). This standard supersedes ?€?Performance Requirements for Passenger Car and Wagon Brakes?€?(QC/T 239-1997) and "Bench Test Methods for Passenger Car and Wagon Brakes "(QC/T 479-1999). This standard integrates all contents of QC/T 239-1997 and QC/T 479-1999, and compared with QC/T 239-1997 and QC/T 479-1999, it has the following main changes.
?€??€?GB/T 15089 was adopted for vehicle classification (see Chapter 1);
?€??€?Some terminologies and definitions were supplemented (see 3.7 and 3.12); ?€??€?The performance requirements of efficiency test were modified (see 4.1.1, 4.1.3, 4.1.5 and 4.1.8; 5.2, 5.4 and 5.7 of 1997 edition);
?€??€?The evaluation requirements of stability for braking torque in efficiency test were added (see 4.1.1, 4.1.3, 4.1.5 and 4.1.8);
?€??€?The upper limit requirements of braking efficiency in fade test were added (see 4.1.4.1 and 4.1.6.1);
?€??€?The requirements of high temperature braking efficiency in fade test were added (see 4.1.4.2 and 4.1.6.2);
?€??€?The requirements of braking efficiency after wear test were added (see 4.2.2 and 7.2.5);
?€??€?The calculation method of test inertia was modified (see 6.3; 7.1.6 of 1999 edition); ?€??€?Inspection prior to running-in was added (see 7.1.1);
?€??€?The efficiency test prior to running-in was added (the first efficiency test) (see 7.1.2);
?€??€?Normal temperature efficiency test was added (see 7.1.4 and 7.1.13);
?€??€?The initial braking speed in efficiency test was modified (see 7.1.5, 7.1.9 and 7.1.14; 7.2.2.1, 7.2.4.1 and 7.2.7.1 of 1999 edition);
?€??€?The test conditions in the first fade recover test were modified (see 7.1.7; 7.2.3 of 1999 edition);
?€??€?The test conditions of hydraulic brake in the second fade test were modified (see 7.1.11; 7.2.5.1 of 1999 edition);
?€??€?The test conditions of flexible test method in the second fade test were modified (see 7.1.11.7; 7.2.5.19 of 1999 edition);
?€??€?The test conditions in wear test were modified (see 7.2; 7.2.8.1 of 1999 edition); ?€??€?The evaluation method of braking torque was modified (see Appendix A; Figure 1 of 1999 edition).
Appendix A of this standard is normative.
This standard was proposed by and is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).
Chief drafting organizations of this standard. China FAW Group Corporation R&D Center, China Automotive Engineering Research Institute Co., Ltd. and Zhejiang Asia-pacific Mechanical & Electronic Co., Ltd.
PROFESSIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Specifications and Bench Test Methods
for Commercial Vehicle Service Brake
1 Scope
This standard specifies the terminologies and definitions, performance requirements as well as bench test methods of commercial vehicle s...

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