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汽车真空单向阀性能要求及试验方法
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QCT 1028-2016
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标准编号: QC/T 1028-2016 (QC/T1028-2016)
中文名称: 汽车真空单向阀性能要求及试验方法
英文名称: Performance requirements and test methods of vehicle vacuum check valve
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: 9,945
发布日期: 2016-01-15
实施日期: 2016-07-01
引用标准: GB 11121-2006; GB 11122-2006; GB 17930-2013; GB 18351-2013
起草单位: 上海汽车制动系统有限公司
归口单位: 全国汽车标准化技术委员会
标准依据: 工信部公告2016年第3号
范围: 本标准规定了汽车制动系统用真空单向阀的术语和定义、性能要求及台架试验方法。本标准适用于各类汽车制动系统使用的真空单向阀(以下简称"单向阀")。
QC/T 1028-2016: 汽车真空单向阀性能要求及试验方法
QC/T 1028-2016 英文名称: Performance requirements and test methods of vehicle vacuum check valve
中华人民共和国汽车行业标准
QC/T 1028-2016
汽车真空单向阀性能要求及试验方法
中华人民共和国工业和信息化部发布
前 言
本标准按照GB/T 1.1—2009 《标准化工作导则 第1部分：标准的结构和编写》给出的规则 起草。
本标准由全国汽车标准化技术委员会(SAC/TC114) 提出并归口。
本标准主要起草单位：上海汽车制动系统有限公司、宁波乔士橡塑有限公司、中国第一汽车股份 有限公司技术中心、
吉林东光奥威汽车制动系统有限公司、泛亚汽车技术中心有限公司、博世汽车部 件(苏州)有限公司。
本标准主要起草人：葛宏、卜凡彬、诸先桥、林大海、张玉海、王强、齐钢、浦新宇、郑文汇。
1 范围
本标准规定了汽车制动系统用真空单向阀的术语和定义、性能要求及台架试验方法。
本标准适用于各类汽车制动系统使用的真空单向阀(以下简称“单向阀”)。
2 规范性引用文件
下列文件对于本标准的应用是必不可少的。凡是注日期的引用文件，仅所注日期的版本适用于
本标准。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本标准。
GB 11121—2006 汽油机油
GB 11122—2006 柴油机油
GB 17930—2013 车用汽油
GB 18351—2013 车用乙醇汽油(E10)
3 术语和定义
下列术语和定义适用于本标准。
4 性能要求
4.1 真空密封性
4.1.1 常温真空密封性。
按6.1.1试验，压力升高值不应大于1 kPa。
4.1.2高温真空密封性。
按6.1.2试验，压力升高值不应大于2 kPa。
4.1.3低温真空密封性。
按6.1.3试验，压力升高值不应大于2 kPa。
4.2 真空开启性
按6.2试验，单向阀真空输出端应产生输出。
4.3 气压密封性
按6.3试验，压力降不应大于0.2 kPa。
4.4 冷凝性
按6.4试验，单向阀真空开启性应满足4.2要求。
4.5 耐介质性能
按6.5试验，单向阀应无裂纹、破损；单向阀常温真空密封性应满足4.1.1要求，真空开启性应满足4.2要求。
4.6 耐久性
按6.6试验，单向阀常温真空密封性应满足4.1.1要求，真空开启性能应满足4.2要求。
4.7 耐压强度
对于外置式单向阀，按6.7试验，壳体和焊接处不应出现损坏。
5 测试设备
5.1 性能试验中记录各参数的所有仪器或仪表，其精度等级不应低于0.4级。
5.2 耐久性试验中测量和指示各参数的仪器或仪表的精度等级不应低于1.5级。
6 试验方法
6.1 真空密封性
6.1.1 常温真空密封性。
6.1.1.1 将被测试单向阀样品按图1所示连接到试验装置中，截止阀与单向阀之间的测试容积为 (90±10)mL。
6.1.1.2 打开真空泵及截止阀，从单向阀真空输出端抽真空至(-9±1)kPa 后关闭截止阀。
6.1.1.3 稳 压 5 s 后，记录此后10 s 内的压力升高值。
6.1.2 高温真空密封性。
6.1.2.1 试验装置及连接方式同6.1.1.1。
6.1.2.2 将单向阀及真空罐等放入环境温度为(120±4)℃的试验箱内，并在单向阀真空输出端施 加(-80±2)kPa 真空。
6.1.2.3 24h 后关闭截止阀，稳压5 s 后，记录此后10 s 内的压力升高值。
6.1.3 低温真空密封性。
除试验箱环境温度为(-40±2)℃外，其他同6.1.2。
6.2 真空开启性
6.2.1 试验装置及连接方式，如图2所示。
6.2.2 在单向阀真空输入端施加(-4±0.5)kPa 的真空。
6.2.3 记录单向阀开启状态。
6.3 气压密封性
6.3.1 试验装置及连接方式如图3所示，截止阀与单向阀之间的测试容积应为(40±8)mL。
6.3.2 打开气压气源和截止阀，从单向阀真空输入端加压至(150±10)kPa 气压后关闭截止阀。
6.3.3 稳 压 5 s 后，记录此后10 s 内的压力变化值。
6.4 冷凝性
6.4.1 将单向阀和管子连接好放入恒温恒湿箱内，管子末端位于舱外。在温度(40±2)℃及相对湿 度(92±3)%RH 的环境下放置24 h。
6.4.2 将单向阀从恒温恒湿箱中取出，放入低温箱，并在1 h 内将低温箱内的温度降至(-40±2)℃。 到达试验温度后立刻完成真空开启性试验。
6.5 耐介质性能
6.5.1 将不同的单向阀样品分别放入下列试验液中浸泡24 h:
a) GB 11121—2006或 GB 11122—2006规定的10W-30 或20W-40 机油；
b) GB 17930—2013 规定的93号车用汽油；
c) GB 18351—2013规定的93号车用乙醇汽油(E10)。
6.5.2 取出单向阀样品，在常温环境下放置24 h。
6.5.3 按6.2进行开启性试验。
6.5.4 按6.1.1进行常温真空密封性试验。
6.6 耐久性
6.6.1 试验装置及连接方式如图4所示。
6.6.3 启动试验设备，使3个电磁阀按图5所示工作时序和时间进行工作，每个循环的总时间为 3s, 总循环次数为5×10⁵次。
6.6.4 试验结束后，按6.1.1进行常温真空密封性试验和6.2进行开启性试验。
6.7 耐压强度
6.7.1 试验装置及连接方式如图6所示。
6.7.2 封堵单向阀真空输出端。
6.7.3 以不大于0.5 MPa/s 的加压速率在单向阀真空输入端施加2 MPa～2.1MPa 的压力
6.7.4 检查并记录样品状态。
QC/T 1028-2016
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.40
T 24
Performance requirements and test
methods of vehicle vacuum check valve
ISSUED ON. JANUARY 15, 2016
IMPLEMENTED ON. JULY 01, 2016
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Table of contents
Foreword ... 5
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 6
4 Performance requirements ... 7
5 Test equipment ... 8
6 Test method ... 8
Ministry of Industry and information Technology of PRC.
Announcement
Year 2016 No.3
It is hereby announced that the Ministry of Industry and Information Technology
approved 643 industry standards (standard numbers, names, major contents and
starting date of implementation can refer to Annex) including the Piston Vacuum
Pump; thereof, there are 214 mechanical industry standards, 7 automotive industry
standards, 1 aviation industry standard, 59 light industry standards, 110 chemical
industry standards, 21 metallurgical industry standards, 6 building material industry
standards, 20 petrochemical industry standards, 6 civil explosion industry standards,
132 electronic industry standards, and 67 communication industry standards.
The above mechanical industry standards are published by Mechanical Industry
Press; automotive industry standards are published by Science and Technology
Literature Press; engineering construction standards in chemical industry are
published by China Planning Press; aviation industry standard is organized to publish
by China Aero-Polytechnology Establishment; light industry standards are published
by China Light Industry Press; chemical industry standards are published by Chemical
Industry Press; metallurgical industry standards are published by Metallurgical
Industry Press; building material industry standards are published by Building Material
Industry Press; petrochemical industry standards are published by China
Petrochemical Press; civil explosion industry standards are organized to publish by
Nuclear Research Institute of Standardization of China Ordnance Industry; electronic
industry standards are organized to publish by China Electronics Standardization
Institute of Ministry of Industry and Information Technology; communication industry
standards are published by People’s Posts and Telecommunications Press.
Annex. standard numbers, names, starting dates of implementation of 7 automotive
industry standards
Ministry of Industry and Information Technology of PRC.
January 15, 2016
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009
Directive for standardization – Part 1. Structure and drafting of standards.
This standard was proposed by AND shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
The drafting organizations of this standard. Shanghai Automotive Brake
System Co., Ltd., Ningbo Qiaoshi Rubber Co., Ltd., China First Automobile Co.,
Ltd. Technology Center, Jilin Dongguang Aowei Automobile Brake System Co.,
Ltd., Pan Asia Automotive Technology Center Co., Bosch Automotive
Components (Suzhou) Co., Ltd.
The main drafters of this standard. Ge Hong, Bo Fanbin, Zhu Xianqiao, Lin
Dahai, Zhang Yuhai, Wang Qiang, Qi Gang, Pu Xinyu, Zheng Wenhui.
Performance requirements and test
methods of vehicle vacuum check valve
1 Scope
This standard specifies the terms and definitions, performance requirements,
and bench test methods of the vacuum check valve for automotive braking
system.
This standard is applicable to the vacuum check valve for all kinds of
automotive braking system (hereinafter shortly referred to as “check valve”).
2 Normative references
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this Standard.
GB 11121-2006 Gasoline engine oils
GB 11122-2006 Diesel engine oils
GB 17930-2013 Gasoline for motor vehicles
GB 18351-2013 Ethanol gasoline for motor vehicles (E10)
3 Terms and definitions
The following terms and definitions apply to this standard.
Interval vacuum check valve
It refers to the check valve which is installed in the vacuum hose.
3.2
External vacuum check valve
It refers to the check valve for which one end is connected to the vacuum
source AND the other end is connected to the vacuum hose or other
devices.
4 Performance requirements
4.1 Vacuum sealability
When tested in accordance with 6.1.1, the pressure rise shall not be greater
than 1 kPa.
4.1.2 High temperature vacuum sealability.
When tested in accordance with 6.1.2, the pressure rise shall not be greater
than 2 kPa.
4.1.3 Low temperature vacuum sealability.
When tested in accordance with 6.1.3, the pressure rise shall not be greater
than 2 kPa.
4.2 Vacuum openness
shall produce output.
4.3 Air pressure sealability
When tested in accordance with 6.3, the pressure drop shall not be greater
than 0.2 kPa.
4.4 Condensation
When tested in accordance with 6.4, the check valve vacuum opening shall
comply with the requirements of 4.2.
4.5 Medium resistance
When tested in accordance with 6.5, the check valve shall be free from crack
comply with the requirements of 4.1.1, AND the vacuum openness shall
comply with the requirements of 4.2.
4.6 Durability
When tested in accordance with 6.6, the normal temperature vacuum
sealability of the check valve shall comply with the requirements of 4.1.1, AND
the vacuum openness shall comply with the requirements of 4.2.
4.7 Compressive strength
When the external check valve is tested in accordance with 6.7, the shell and
welds shall be free from damage.
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