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QC/T 1123-2019 PDF in English


QC/T 1123-2019 (QC/T1123-2019, QCT 1123-2019, QCT1123-2019)
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QC/T 1123-2019: PDF in English (QCT 1123-2019)

QC/T 1123-2019
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.01
T 26
Vehicle tire inflator
ISSUED ON: NOVEMBER 11, 2019
IMPLEMENTED ON: APRIL 01, 2020
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 7
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions ... 9
4 Requirements ... 9
5 Test method ... 13
6 Signs and labels ... 16
Vehicle tire inflator
1 Scope
This standard specifies the terms and definitions, requirements, test methods, marks and
labels of vehicle tire inflators.
This standard applies to vehicle tire inflators powered by the vehicle power supply.
2 Normative references
The following documents are essential to the application of this document. For 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) is
applicable to this standard.
GB/T 1186-2016 Rubber hoses, textile-reinforced, for compressed air -
Specification
GB/T 1226-2017 General pressure gauge
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code)
GB/T 4980-2003 Determination of sound level for noise emitted by displacement
compressors
GB/T 7777 Measurement and evaluation of mechanical vibration of displacement
compressors
GB/T 9765 Tyre valve threads
GB 22207-2008 Safety requirements of displacement air compressor
GB/T 34530.1 Valve for cryogenic insulated cylinder - Part 1: Pressure regulating
valve
QC/T 413-2002 Basic technical requirements for automotive electric equipment
QC/T 29106-2014 Technical specification of automobile wire harness
3 Terms and definitions
3.1
Vehicle tire inflator
Portable inflation device with the function of inflating vehicle tires (hereinafter
referred to as inflator).
3.2
Safety valve
The overpressure protection device, which is installed inside the inflator, to prevent
the air pressure from being too high, during the inflation process, from damaging
the inflator or tires.
3.3
Air release valve
A device for manual deflation, when the inflation pressure exceeds the set value.
4 Requirements
4.1 Outline requirements of inflator
The shell of the inflator shall be well formed, with a clean surface, no cracks, lack of
material, or obvious deformation; the external dimensions shall meet the requirements
of the design drawing.
4.2 Requirements for main components
4.2.1 Power cord and plug
4.2.1.1 Aging resistance of power cord
There shall be no cracks in the insulation layer of the power cord, when placed at (-40
± 3) °C for 168 h. The power supply cord's insulation does not melt, when placed at (85
± 3) °C for 168 h.
4.2.1.2 Exposed length of power cord
The exposed length of the power cord of the inflator, which is powered by the cigarette
lighter socket, shall not be less than 2.7 m. The exposed length of the power cord of the
battery fetched shall not be less than 4.0 m.
5.1.1 Test conditions
The general conditions of the test shall meet:
- Ambient temperature: (25 ± 5) °C;
- Relative humidity: 25% ~ 75%;
- DC voltage: (12 ± 0.15) V, (24 ± 0.15) V.
5.1.2 Test device
The test device mainly includes an inflatable air cylinder and a pressure regulating valve,
which meet the following requirements:
- The volume tolerance and pressure resistance of the air cylinder shall meet the
requirements in Table 4;
- The pressure regulating valve shall meet the requirements of GB/T 34530.1.
5.2 Test of main components
5.2.1 Fix the power cord on the fixture of the tensile testing machine. Apply tension
along the axis of the cord. Record the maximum tension value, during the process of
pulling out the terminal.
5.2.2 Insert the power plug into a standard cigarette lighter socket. Use a tension gauge,
to measure the insertion force and pull-out force of the power plug.
5.2.3 Air pipe pressure resistance test shall be carried out, according to the test method
required by Type I in Table 3 of 7.2 in GB/T 1186-2016.
5.2.4 The air pipe aging resistance test is carried out, according to the test method
required in Table 2 of 7.1 in GB/T 1186-2016.
5.2.5 Fix the air pipe on the fixture of the tensile testing machine. Apply a static tensile
force of 98 N, along the axis of the air pipe. Keep it for 1 min. Record whether the joint
falls off.
5.2.6 Connect the air outlet of the inflator to the standard barometer and the air cylinder.
Inflate until the safety valve opens. Record the opening pressure value.
5.2.7 Connect the air outlet of the inflator to the standard air gauge and the air cylinder.
Inflate to the set inflation pressure plus 100 kPa. Shut down the machine. Press and
hold the release valve button for 1 min. Record the pressure values before and after the
test.
5.3 General performance test
5.3.1 Connect the air outlet of the inflator to the standard barometer and the air cylinder.
Inflate it to the set inflation pressure. Measure the maximum operating current and
filling time.
5.3.2 Pressure gauge accuracy test is carried out, in accordance with Chapter 6 of GB/T
1226-2017.
5.3.3 Block the air outlet of the inflator. After the inflator is inflated to the set inflation
pressure for 5 seconds, measure the pressure drop of the air circuit.
5.4 Cyclic inflation test
Connect the air outlet of the inflator to the standard barometer and the air cylinder. After
inflating to the set inflation pressure, stop the inflator and complete the deflation within
60 minutes, which is a test cycle. A total of 100 cycles shall be completed. Record the
maximum operating current and filling time of the inflator for each cycle.
5.5 Continuous working temperature rise test
5.5.1 Connect air outlet of the inflator to the standard air gauge and pressure regulating
valve. The inflator continues to work, after inflating to the set inflation pressure. Record
the actual current, the motor shell temperature, power cord temperature, product shell
temperature, cylinder head temperature, once every 5 min. Shut down after 30 min.
According to 5.3.1, measure the maximum working current and filling time of the
inflator.
5.5.2 Connect air outlet of the inflator to the standard air gauge and pressure regulating
valve. The inflator continues to work for 15 minutes, after reaching the set inflation
pressure, in an environment of (70 ± 3) °C. Then shut down. Measure the maximum
working current of the inflator and the filling time, according to 5.3.1.
5.6 Protection test
Test according to the test method required by the degree of protection IP33 in GB/T
4208 -2017.
5.7 High temperature test
After putting the inflator in a high-temperature box at (70 ± 3) °C for 1 hour. Measure
the maximum operating current and filling time of the inflator, in the high-temperature
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.