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QC/T 1011-2023: (Automobile Clutch Master Cylinder)
Status: Valid QC/T 1011: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| QC/T 1011-2023 | English | 449 |
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(Automobile Clutch Master Cylinder)
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QC/T 1011-2023
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| QC/T 1011-2015 | English | 110 |
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Technical requirements and bench test methods for hydraulic air-assistant system master cylinder of clutch
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QC/T 1011-2015
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PDF similar to QC/T 1011-2023
Standard similar to QC/T 1011-2023 QC/T 1020 QC/T 1077 QC/T 1025 QC/T 1010 Basic data | Standard ID | QC/T 1011-2023 (QC/T1011-2023) | | Description (Translated English) | (Automobile Clutch Master Cylinder) | | Sector / Industry | Automobile & Vehicle Industry Standard (Recommended) | | Classification of Chinese Standard | T21 | | Classification of International Standard | 43.040.50 | | Word Count Estimation | 22,293 | | Date of Issue | 2023-04-21 | | Date of Implementation | 2023-11-01 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the terms and definitions of automobile clutch master cylinder, and specifies the technical requirements and test methods of the master cylinder. This standard applies to automobile clutch master cylinder. | QC/T 1011-2015: Technical requirements and bench test methods for hydraulic air-assistant system master cylinder of clutch
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical requirements and bench test methods for hydraulic air-assistant system master cylinder of clutch
ICS 43.040.50
T 21
QC
People 's Republic of China Automotive Industry Standard
Clutch hydraulic gas booster system master cylinder
Technical requirements and bench test methods
Technical requirements and bench test methods for
Hydraulic air-assistant system master cylinder of clutch
201 5-07-14 released
2016-01-01 Implementation
Issued by the Ministry of Industry and Information Technology of the People 's Republic of China
Ministry of Industry and Information Technology of the People 's Republic of China
announcement
Ministry of Industry and Information Technology approved 543 industry standards such as "calcium carbide furnace" (standard number, name, main content and start
Implementation date see Annex 1), of which 48 mechanical industry standards, the automotive industry standard 16, the aviation industry standard 15,
Pharmaceutical equipment industry standard 13, light industry standard 58, the textile industry standard 86, the chemical industry standard 68,
Metallurgical industry standard 16, building materials industry standard 50, petrochemical industry standard 21, nonferrous metals industry standard 2,
Nuclear industry standard 3, the communications industry standard 147, is to be announced.
Annex. 16 automotive industry standard number, standard name and start date of implementation
Ministry of Industry and Information Technology of the People 's Republic of China
July 14,
annex.
16 automotive industry standard number, standard name and start date of implementation
Serial number Standard number Standard name was replaced by standard number Start date
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Directory
Foreword
1 Scope
2 normative reference documents
3 terms and definitions
4 technical requirements
5 test method
Foreword
This standard is in accordance with GB/T 1.1-2009 "Standardization of the work of the first part. the standard structure and the preparation of" given
Rules drafted.
This standard is proposed by the National Automotive Standardization Technical Committee (SAC/TC 114).
The main drafting unit of this standard. China Heavy Vehicle Group Co., Ltd., Jiaxing New Zhongnan Auto Parts Co., Ltd.,
Jiangsu University.
This standard participates in the drafting unit. Jinan Automobile Testing Center, Shandong Heavy Industry Group Co., Ltd., Weiboke Automobile Control Department
(China) Co., Ltd., Kenuo Kafu commercial vehicle system (Chongqing) Co., Ltd., Zhejiang Institute of Science and Technology, FAW Technology Center,
Dongfeng Liuzhou Automobile Co., Ltd., Shaanxi Heavy Vehicle Co., Ltd., Baotou North Benz Heavy Vehicle Co., Ltd., Zhejiang Ji
Lee Automobile Research Institute Limited.
The main drafters of this standard. Cui Huiping, Xu Jiacheng, Liu Jinhui, Gao Xiang, Wu Hongwei, Zhang Ziqiang, Li Hui.
Technical requirements and gantry test method for master cylinder of clutch hydraulic gas assisted system
1 Scope
This standard specifies the clutch hydraulic gas booster system master cylinder (hereinafter referred to as the master pump) technical requirements, test methods.
This standard applies to the automotive clutch hydraulic gas booster system master cylinder.
2 normative reference documents
The following documents are indispensable for the application of this standard. Note the date of the reference file, only the date of the date of the note
Applicable to this standard. For undated references, the latest edition (including all amendments) applies to this standard.
Brake fluid for motor vehicles GB 12981
GB/T 10125 Artificial atmosphere corrosion test Salt spray test
3 terms and definitions
The following terms and definitions apply to this standard.
3.1
Maximum travel maximal travel
The distance from the initial position of the piston to the limit position.
3.2
Initial pressure-building travel
The piston moves from the initial position to the hydraulic chamber to produce a distance between 0.1 MPa pressure.
3.3
Test temperature
Normal temperature. (20 ± 3) ℃; high temperature. (80 ± 3) ℃; low temperature. (- 40 ± 3) ℃.
4 technical requirements
4.1 Basic requirements
4.1.1 The master cylinder shall comply with the requirements of the drawings and technical documents approved by the prescribed procedure.
4.1.2 working medium. brake fluid, should be consistent with the provisions of GB 12981.
4.1.3 Operating temperature. -40 ℃ ~ 80 ℃.
4.2 Performance requirements
4.2.1 return speed.
According to the provisions of 5.1 test, the piston must be fully returned to the initial position within 1 s, the piston movement is smooth, no abnormal noise.
4.2.2 Initial pressure stroke.
According to the provisions of 5.2 test, the initial pressure stroke maximum of not more than 4 mm.
1 - cylinder; 2 - hydraulic chamber; 3 - compensation hole; 4 - inlet; 5 - dust cover;
6-putter; 7-seal ring; 8-piston; 9-bowl; 10-outlet
Figure 1 Example of a master cylinder
4.2.3 Sealability.
According to the provisions of 5.3 test, the allowable pressure drop of 30 s should not be greater than the provisions of Table 1.
Table 1 Permissible 30 s pressure drop
Unit. MPa
Test pressure test temperature
At room temperature and low temperature
1 0.1 0.4
2 0.2 0.8
4.2.4 Durability of work.
According to the provisions of 5.4 test, the total loss of brake fluid during the test less than 0.1 L. After the completion of the test by 5.1,5.2 re-examination,
Should meet the requirements of 4.2.1, 4.2.2. At the same time according to the method of 5.3 test, room temperature sealing test results should be consistent with the low in Table 1
The provisions of the temperature.
4.2.5 salt spray corrosion resistance.
According to the provisions of 5.5 test, the outer surface of the pump every 100cm. Within the scope of no more than 2mm diameter corrosive,
Corrosion area should not exceed 5 cm2.
5 test method
5.1 return speed test
The main pump connected to the storage tank, plus brake fluid, exhaust air, push the master plunger so that the piston from the limit position 0 mm ~ 3 mm,
The outlet is closed, let the piston free return, record the piston back to the initial position time, observe the piston movement flexibility.
5.2 Initial pressure stroke test
The master pump connected to the tank, plus brake fluid, exhaust air. The outlet is closed and the pressure gauge is connected at the outlet. Slow to push
Piston, record the hydraulic chamber when the hydraulic pressure of 0.1 MPa when the piston stroke.
5.3 Sealability test
The sealing test was carried out in three kinds of temperature conditions at room temperature, high temperature and low temperature respectively. The principle of the test device is shown in Fig.
1-pressure gauge; 2-tank; 3-specimen; 4-putter; 5-lock device; 6-action generating device
Figure 2 Principle of the test device
The master cylinder fills the brake fluid and drains the air. After the piston pump has been pressed from the initial position for 5 mm, close the outlet and lift it
As the generating device 6, the hydraulic pressure reaches 1 MPa or 9 MPa, respectively, after locking the locking device 5, the recording pressure gauge 1 hydraulic pressure from
Steady time to 30 s pressure drop.
5.4 Work durability test
5.4.1 The work durability test includes a room temperature durability test, a high temperature durability test and a low temperature durability test.
5.4.2 test in accordance with the normal temperature - high temperature - low temperature cycle, the specimen in the specified temperature environment for more than 2 h, then
Start experimenting. The trial was conducted in three cycles. Test frequency, the number of single cycle test and the total number of times in Table 2.
5.4.3 The maximum angle between the putter and the piston when tested is 3. The
5.4.4 Adjust the action generating device to meet the piston stroke is greater than 80% of the maximum stroke of the master cylinder.
5.4.5 adjust the load device to ensure that the total piston piston movement to no more than 40% of the action stroke, the hydraulic chamber to establish (1.5 ±
0.3) MPa hydraulic. Hydraulic pressure is no longer increased, when the pressure 0.3 s ~ 0.5 s, holding time not less than 0.6 s.
Table 2 test frequency, the number of single cycle test and the total number of times
At room temperature and low temperature
Test frequency/(times/min) 15 ~ 30 4 ~ 8
Number of single cycle tests/times 225 000 225 000 3 000
Total number of times per state/time 675 000 75 000 9 000
5.5 Salt spray corrosion test
The total cylinder brake fluid drained, the inlet, the liquid outlet blocked, with dust cover, put put together with salt spray test chamber
Inside. According to GB/T 10125 3.2.1,8.1 in the provisions of the neutral salt spray test method, the master spray for 48 h, check
Corrosion of the outer surface of the master cylinder.
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