GB/T 35472.6-2017 English PDF

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GB/T 35472.6-2017: Test method for friction element of wet automatic transmission -- Part 6: μ-PVT test method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35472.6-2017	199	Add to Cart	3 days	Test method for friction element of wet automatic transmission -- Part 6: μ-PVT test method	Valid

Similar standards

GB/T 37208   GB/T 37224   GB/T 34007   GB/T 35472.3   GB/T 35472.4   GB/T 35472.2   

Basic data

Standard ID: GB/T 35472.6-2017 (GB/T35472.6-2017)
Description (Translated English): Test method for friction element of wet automatic transmission -- Part 6: ��-PVT test method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q69
Classification of International Standard: 43.040.40
Word Count Estimation: 10,148
Date of Issue: 2017-12-29
Date of Implementation: 2018-11-01
Regulation (derived from): National Standards Bulletin 2017 No. 32
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35472.6-2017: Test method for friction element of wet automatic transmission -- Part 6: μ-PVT test method

---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.
Test method for friction element of wet automatic transmission - Part 6. μ-PVT test method ICS 43.040.40 Q69 National Standards of People's Republic of China Wet Automatic Transmission Friction Elements Test Method Part 6. Friction and pressure, speed, Temperature relationship test method Part 6.μ-PVTtestmethod 2017-12-29 Posted 2018-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 35472 "wet automatic transmission friction element test method" is divided into the following seven sections. --- Part 1. Terms and definitions; --- Part 2. SZBL friction test machine use guide; --- Part 3. Low speed power increment test method; --- Part 4. High-speed power increment test method; --- Part 5. Durability test methods; --- Part 6. Test methods for the relationship between friction performance and pressure, speed and temperature; --- Part 7. Belt friction test method. This section GB/T 35472 Part 6. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Building Materials Federation. This part of the National Non-metallic Mineral Products and Products Standardization Technical Committee (SAC/TC406) centralized. This part of the drafting unit. Chongqing Wang Cheng Technology Co., Ltd., Linan Hualong Friction Materials Co., Ltd., Xianyang non-metallic mineral research Design Institute Co., Ltd., Shunde District of Foshan City, quality and technical supervision standards and coding, Northwestern Polytechnical University. The main drafters of this section. Du Ming, Wu Yinjian, Xu Nanhan, Cheng Jing, Xu Jinxi, Shi Zhigang, Zhu Mianpeng, Liu Hui, Duan Yaping, Fu Ye Wei. Wet Automatic Transmission Friction Elements Test Method Part 6. Friction and pressure, speed, Temperature relationship test method

1 Scope

This section GB/T 35472 specifies the use of SZBL-type friction tester wet friction test friction and pressure performance, speed Degree, temperature test equipment when the relationship between the typical test conditions and parameters, test procedures, data acquisition and results report. This section applies to the use of SZBL-type friction tester wet friction test components at different pressures, speeds and temperatures under the friction performance to This evaluation of wet friction element performance with the speed, temperature and pressure changes.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 35472.1 wet automatic transmission friction element test methods - Part 1. Terms and definitions GB/T 35472.2 wet automatic gearbox friction element test methods - Part 2 .SZBL friction test machine use guide

3 test equipment

The test equipment is a SZBL type friction tester with static engagement device. Its performance and accuracy should be consistent with the provisions of GB/T 35472.2. Its inertia configuration should be consistent with the provisions of Table 1.

4 typical test conditions and parameters

4.1 friction plate area of 56.99cm2 (see Appendix A). 4.2 Piston area of 15110mm2. 4.3 piston effective stroke of 4.57mm. 4.4 Piston pressure shall comply with the requirements of each test phase in Table 1, the allowable error range of force is ± 0.5%. 4.5 Piston pressure should be within.200ms to reach the set value and maintain stability. The maximum overshoot for the maximum pressure can not exceed the set pressure 2% of force. 4.6 Piston should provide back pressure of 30kPa ~ 100kPa pressure, and after the completion of pressure relief to remove the load pressure. 4.7 The energy value should meet the requirements of Table 1, the allowable deviation range is ± 5%. The inertia should be constant throughout the test (see Table 1). 4.8 static engagement speed of 4.37r/min. 4.9 Test oil should meet the following requirements. a) the total oil is greater than or equal to 5L, the test should be replaced before the start of a new test oil; b) temperature according to Table 1, the temperature deviation range ± 5 ℃; c) Test oil flow was (1.0 ± 0.05) L/min; ......

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