9秒发货/有发票 梧三标准英文版 优质技术翻译  数据库收录:159759 最近更新:2020-05-17  
支付宝/对公账号 首页   询价  购买流程  英文样品 公司简介   购物车

QC/T 564-2008

标准搜索结果: 'QC/T 564-2008'
标准号码内文价格(元)第2步交付天数标准名称状态
QC/T 564-2008 英文版 300 购买 现货,9秒内自动发货PDF,有增值税发票。 乘用车制动器性能要求及台架试验方法 作废

   
标准编号: QC/T 564-2008 (QC/T564-2008)
中文名称: 乘用车制动器性能要求及台架试验方法
英文名称: Performance requirements and bench test methods for passenger car brake
行业: 汽车行业标准 (推荐)
中标分类: T24
国际标准分类: 43.040.40
字数估计: 16,120
发布日期: 2008-06-04
实施日期: 2008-11-01
旧标准 (被替代): QC/T 582-1999; QC/T 564-1999
引用标准: GB/T 15089; QC/T 556
起草单位: 中国第一汽车集团公司技术中心
归口单位: 全国汽车标准化技术委员会
标准依据: 国家发改委公告2008年第38号
范围: 本标准规定了乘用车行车制动器的性能要求及台架试验方法。本标准适用于GB/T 15089规定的M1类车辆用行车制动器总成及摩擦衬片(衬块)总成。


QC/T 564-2008
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing QC/T 564-1999 and QC/T 582-1999
Performance Requirements and
Bench Test Methods for Passenger Car Brake
乘用车制动器
性能要求及台架试验方法
ISSUED ON. JUNE 4, 2008
IMPLEMENTED ON. NOVEMBER 1, 2008
Issued by. National Development and Reform Commission of the
People's Republic of China
Attachment.
Numbers and Names of 8 Automobile Industry Standards
S.N. Standard no. Standard name Standard no. replaced
289 QC/T 79.1-2008
Road Vehicles – Coiled Pipe Assemblies for Pneumatic
Braking Connection between Motor Vehicles and Towed
Vehicles – Part 1. Dimensions
QC/T 79-1993
290 QC/T 79.2-2008
Road Vehicles – Coiled Pipe Assemblies for
Pneumatic Braking Connection between Motor Vehicles
and Towed Vehicles – Part 2. Performance
Requirements
QC/T 79-1993
291 QC/T 311-2008 Performance Requirements and Bench Test Methods for
Automobile Brake Master Cylinder
QC/T 311-1999
292 QC/T 564-2008 Performance Requirements and Bench Test Methods for
Passenger Car Brake
QC/T 564-1999
QC/T 582-1999
293 QC/T 800-2008 Method of Bed Test of Continuously Variable
Transmission for Motorcycles and Mopeds
294 QC/T 235-2008 Specifications and Test Methods for Exhaust Muffler of
Motorcycles and Mopeds
QC/T 235-1997
295 QC/T 61-2008 Specifications and Test Methods on Intensifying
Test for Engine of Motorcycles and Mopeds
QC/T 61-1993
296 QC/T 801-2008
Technical Requirements and Testing Methods of Reed
Valve Type Second Air Injectors for Motorcycles and
Mopeds
Table of Contents
Foreword ... 5 
1 Application Scope ... 6 
2 Normative References ... 6 
3 Terms and Definitions ... 6 
4 Performance Requirements ... 10 
5 Test Requirements ... 12 
6 Test Preparation ... 13 
7 Test Methods and Conditions ... 14 
Annex A (Normative) Method for Taking Braking Torque Values ... 20 
Foreword
This standard revises QC/T 564-1999, Limousine Brake Bench Test Method, and
QC/T 582-1999, Limousine Brake Performance Requirements; this revision
incorporates QC/T 564-1999 and QC/T 582-1999.
Compared with QC/T 564-1999 and QC/T 582-1999, the main changes of this
Standard are as follows.
-- it modifies the method for calculation of rotation inertia;
-- it modifies the initial braking speed and performance requirements for efficiency
test;
-- it modifies fade test conditions and evaluation method;
-- it adds abrasion test; and
-- it adds the method for taking braking torque value.
From the date of implementation, this Standard replaces QC/T 564-1999 and QC/T
582-1999.
The main drafting organizations of this Standard. China FAW Group Corporation
R&D Center, Chongqing Automobile Research Institute, Zhejiang Asia-Pacific
Mechanical & Electronic Co., Ltd. and Hebei Xingyue Braking Element Co., Ltd.
The main drafters of this Standard. Lin Dahai, Wang Min, Mei Zongxin, Huang
Guoxing and Shen Kunrui.
The editions of the standard replaced by this Standard are as follows.
-- JB 3980-1985 and JB 4200-1986;
-- QC/T 564-1999 and QC/T 582-1999.
Performance Requirements and
1 Application Scope
This standard specifies the performance requirements and bench test methods for
passenger car brake.
This standard applies to passenger car brake assemblies and friction lining (lining
block) assemblies for vehicles of category M1 specified in GB/T 15089.
2 Normative References
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For dated references, the subsequent
amendments (excluding corrigendum) or revisions do not apply to this Standard,
to study if the latest versions of these documents are applicable. For undated
references, the latest edition of the referenced document applies.
GB/T 15089, Classification of Power-driven Vehicles and Trailers
QC/T 556, Road Vehicle Brakes – Temperature Measurement and Thermocouple
Installation
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions apply.
3.1
braking period
the next braking
NOTE Braking period is expressed in s.
the ratio of average braking torque to average braking pressure within a braking
process
3.8
final braking temperature
the maximum temperature of braking drum (disc) or friction lining (lining block)
during a braking process or after braking
NOTE Final braking temperature is expressed in °C.
fade rate
the degree of fall and rise of braking torque during fade test, in percentage. And it is
calculated in accordance with Equations (1) and (2).
where
Fai – fade rate of the ith fade test, in %;
MBi – average braking torque value of the 1st braking during fade test, in Nm;
PBi – average braking pressure of the 1st braking during fade test, in MPa;
MBmin – average braking torque value relative to the braking with the minimum unit
average braking torque between the 2nd braking and the last braking, in Nm;
MBmax – average braking torque value relative to the braking with the max unit
average braking torque between the 2nd braking and the last braking, in Nm; and
PBmax – average braking pressure value relative to MBmax in fade test, in MPa.
3.10
recover rate
The requirements for the abrasion loss of brake friction lining (lining block) and
braking drum (disc) shall be as agreed by the supplier and the purchaser.
5 Test Requirements
5.1 Requirements for test apparatus
two-wheeled); its performance indexes shall meet all test requirements of this
Standard.
5.1.2 Braking pressure supply system of the test apparatus shall meet the
requirements of all kinds of braking conditions for braking pressure and maintain
stability. The rate of rise and fall of braking pressure shall be controlled within (25 ± 5)
MPa/s.
5.1.3 The cooling equipment of brake of the test apparatus shall make the air
speed at brake tested 11 m/s and cover the whole brake assembly.
5.1.4 The control errors of braking pressure and rotation speed of the test bench
test bench rotation part) shall be ± 5%.
5.1.5 The system errors of the device recording the parameters such as braking
torque, braking pressure and test bench spindle rotation speed shall be ± 1%; the
devices and thermocouples recording the temperature of braking drum (disc) and
braking friction lining (lining block) shall be as specified in QC/T 556; when the
temperature is lower than 300°C, the error of the measuring system shall be ± 3°C
and when the temperature is higher than 300°C, it shall be ± 1°C.
5.1.6 The accuracy grade of the instruments or meters indicating all parameters
shall not be lower than grade 2.5.
5.2.1 All test passenger car speeds shall be rounded off to an integral multiple of 5.
5.2.2 Except fade test and that it is specified otherwise, cooling speed for the test is
11 m/s and temperature of cooling air is room temperature.
5.2.3 Unless specified otherwise, final braking speeds of all tests are zero.
5.2.4 When measuring braking noise, place the sound head of the sound level
meter in the rotation plane of brake to be tested, 500 mm right above the rotation
axis; mount the sound head in the wind guard.
where
Ga – total mass of passenger car under full load, in kg;
hg – gravity center height of passenger car under full load, in m;
b – distance from gravity center to rear shaft, in m; and
a – distance from gravity center to front shaft, in m.
6.4 Braking deceleration required by the test is converted into the braking torque
control value of the test bench in accordance with Equation (8).
where
Mc – braking torque control value of the test bench, Nm; and
Jc – braking deceleration required by the test, m/s2.
7 Test Methods and Conditions
7.1.1 Inspection before running-in
a) initial braking speed. 50 km/h;
b) average braking deceleration. 3 m/s2;
c) initial braking temperature shall not be greater than 100°C, but braking period
shall not be less than 30 s; and
d) number of brakings. 10.
7.1.2 First efficiency test.
a) initial braking temperature [refer to the temperature of friction lining (lining
block), the same below]. (80 ± 2) °C;
c) take 5 points within the specified braking pressure range and try to make the
intervals between all test points equal. Carry out one test for each braking
pressure relative to all initial braking speeds; and
d) record initial braking speed, initial braking temperature, final braking
temperature, braking time, braking pressure and ...
   
宁德梧三商贸有限公司 | 纳税人识别号:91350900MA32WE2Q2X | 营业执照:营业执照证书
点击联络我们 联系电邮郑文锐销售经理: Sales@gb-gbt.cn | Sales@ChineseStandard.net | 电话郑经理: 18059327808 | 增值税普通发票 / 增值税专用发票样品
对公开户银行:中国建设银行古田支行 | 账号:35050168730700000955 | 账户名称:宁德梧三商贸有限公司 | 大额行号(非必须):105403500207 对公银行账号证书
翻译支持:全资母公司新加坡场测亚洲公司(https://www.ChineseStandard.net 卖欧美后再内销)
网站备案许可:闽ICP备19012676号 http://www.beian.miit.gov.cn
隐私   ·  优质产品   ·  退款政策   ·  公平交易   ·  关于我们