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QC/T 1004-2015 (QC/T1004-2015)

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QC/T 1004-2015: PDF in English (QCT 1004-2015)

QC/T 1004-2015
ICS 43.040.40
T 24
Performance Requirements and Bench Test
Methods of Automobile Electric Vacuum Pump
ISSUED ON. JULY 14, 2015
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Number, Name and Initial Implementation Date of 1 Automobile Industry
S.N. Standard no. Standard name No. of replaced standard
implementation date
49 QC/T 1002-2015 Test Method of Durability in CH-DY for
Motorcycles and Mopeds
January 1, 2016
50 QC/T 1003-2015
Determination of Precious Metal in
Metal Support Catalytic Converter for
January 1, 2016
51 QC/T 1004-2015
Performance Requirements and
Bench Test Methods of Automobile
Electric Vacuum Pump
January 1, 2016
52 QC/T 200-2015
Performance Requirements and
Test Methods of Reservoir for Air
Brake Equipment of Automobile and
QC/T 200-1995 January 1, 2016
53 QC/T 35-2015
Automobile and Trailer –
Specifications and Bench Test
Methods of Pressure Control
QC/T 35-1992
QC/T 36-1992 January 1, 2016
54 QC/T 37-2015
Automobile and Trailer –
Specifications and Test Methods of
Bench for Pressure Regulator and
QC/T 37-1992
QC/T 38-1992 January 1, 2016
55 QC/T 77-2015
Specifications and Bench Test
Methods of Automobile Hydraulic
Brake Wheel Cylinder
QC/T 77-1993 January 1, 2016
56 QC/T 1005-2015
Specifications and Bench Test
Methods of Automobile Antilock
Braking System
Electromagnetic-Hydraulic Modulator
January 1, 2016
57 QC/T 1006-2015
Specifications and Bench Test
Methods of Automobile Antilock
Braking System Solenoid Modulator
for Pneumatic
January 1, 2016
58 QC/T 1007-2015
Evaluating Filtration Performance of
Fuel Filters for Automobiles – Method
of Particle Counting
January 1, 2016
59 QC/T 1008-2015 Specifications of Tank Ventilation
January 1, 2016
Table of Contents
Foreword ... 6 
1 Application Scope ... 7 
2 Normative References ... 7 
3 Terms and Definitions ... 7 
4 Performance Requirements ... 8 
5 Test Apparatus and Test Conditions ... 10 
6 Test Methods ... 11 
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009,
Directives for Standardization – Part 1. Structure and Drafting of Standards.
This Standard was proposed by and shall be under the jurisdiction of the National
Technical Committee of Auto Standardization (SAC/TC 114).
The main drafting organizations of this Standard. Zhejiang VIE Science and
Technology Co., Ltd., Beijing Automotive Group Co., Ltd., Anhui Jianghuai
Automobile Group Corp., Ltd., Suzhou UL Meihua Certification Co., Ltd.
The main drafters of this Standard. Chen Feng, Hou Zonggang, Zhan Wenzhang,
Dong Liang, Li Xiaopan.
Performance Requirements and Bench Test
Methods of Automobile Electric Vacuum Pump
1 Application Scope
This standard specifies the terms and definitions, performance requirements and
bench test methods of electric vacuum pumps used in automobile braking system.
This standard applies to electric vacuum pumps providing independent vacuum
source for vacuum booster servo in automobile braking system.
This Standard does not apply to electric auxiliary vacuum pumps.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to this Standard.
GB/T 4942.1-2006, Degrees of Protection Provided by the Integral Design of
Rotating Electrical Machined (IP Code) – Classification
GB/T 10125-1997, Corrosion Tests in Artificial Atmospheres – Salt Spray Tests
GB/T 10587, Specifications for Salt Mist Testing Chambers
GB/T 18655-2010, Vehicles, Boats and Internal Combustion Engines – Radio
Disturbance Characteristics – Limits and Methods of Measurement for the
Protection of On-board Receivers
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions apply.
electric vacuum pump
The electromagnetic disturbance performance of electric vacuum pump shall be as
specified in the requirements for the parts radiation disturbance limit grade 1 in GB/T
5 Test Apparatus and Test Conditions
5.1 Test apparatus
5.1.1 Test apparatus used for test shall be as specified for related test items; they
shall not have adverse effects on the function of test sample.
5.1.2 The accuracy of instruments and meters for measuring and indicating all
parameters in durability test shall not be lower than grade 2.0.
5.1.3 The temperature control error of high-temperature and low-temperature test
apparatus shall be ± 2°C.
5.1.4 Salt spray test chamber shall be as specified in GB/T 10587.
5.1.5 Vibration test apparatus shall have sweep frequency function.
5.2 Test conditions
Unless specified otherwise, all tests shall be carried out under the following
a) the environmental temperature shall be 20°C ± 2°C;
b) the relative humidity shall not be greater than 95%;
c) the environmental atmospheric pressure shall not be lower than 98 kPa;
d) the motor working voltage shall be rated voltage;
e) the test volume shall be decided in accordance with vacuum tank equipped in
vehicles or as agreed on by the supplier and the purchaser.
5.3 Test items and sample requirements
The corresponding relationships between test samples and test items are preferably
selected based on Table 2, based on different test objectives. Installation of sample and connection of relevant pipes and circuits are as
specified in Start electric vacuum pump after achieving the environmental temperature
specified; carry out durability test under the test conditions specified in Table 3,
altogether 10 cycles of test.
6.2.3 Carry out basic performance retest at normal temperature after test;
dismantle sample if necessary; record the damages of sample.
6.3 Vibration durability
6.3.1 Mount test sample on vibration test bench through fixture in accordance with
the actual installation condition on a vehicle; connect relevant pipes and circuits as
specified in product specifications.
6.3.2 Start vibration test bench to carry out sweep frequency test at 33.3 Hz ~ 66.7
Hz along the vertical direction at the acceleration of 43 m/s2; the sweep frequency
cycle is 15 min and the test duration 40 h. Meanwhile, electric vacuum pump
operates under the normal-temperature durability test conditions specified in Table 3.
6.3.3 Carry out basic performance retest at normal temperature in accordance with after test; dismantle sample if necessary; record the damages of sample.
6.4 Corrosion resistance
Place sample into salt spray test chamber after sealing the evacuation opening of
sample; carry out continuous salt spray test for 144 h (96 h for galvanized parts) in
accordance with the requirements for neutral salt spray test specified in GB/T
10125-1997. Use clean water of temperature not higher than 40°C for washing to
remove the salt deposit on the sample surface after test; then blow air for drying
within 2 min; examine and record the corrosion of the surface protective layer.
6.5 Liquid consumption
6.5.1 At the filling opening of electric vacuum pump liquid reservoir, use an adapter
to connect with a graduated measuring container. The minimum resolution of the
container is preferably 1 mL. Add liquid medium specified in product specifications to
electric vacuum pump through measuring container. The amount added shall ensure
the measurement of liquid consumption; meanwhile, it shall not influence the normal
operation of electric vacuum pump. When the two are contradictory, an alternative
method shall be used for test.
6.5.2 Mount sample on test bench as specified in
(Above excerpt was released on 2017-07-20, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/QCT1004-2015