AMT (Automatic Mechanical Transmission) synchronizer fatigue life testing method and test bench for realizing method

A technology of fatigue life and test method, which is applied in the field of automobile transmission, can solve problems such as fatigue life test verification of synchronizers of automobile mechanical automatic transmissions, and achieve the effect of ensuring reliability

Inactive Publication Date: 2014-01-22
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is still no special test method to test and verify the fatigue life of the synchronizer of the automobile mechanical automatic transmission.

Method used

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  • AMT (Automatic Mechanical Transmission) synchronizer fatigue life testing method and test bench for realizing method

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0035]In order to fill in the blank of the mechanical automatic transmission synchronizer fatigue life test method in the prior art, the present invention proposes a mechanical automatic transmission synchronizer fatigue life test method and a test bench for realizing the test method.

[0036] Mechanical automatic transmission synchronizer fatigue life test method of the present invention, its steps are as follows:

[0037] (1) Provide lubricating oil for the transmission to be tested, and the oil temperature is controlled at 80°C to 90°C;

[0038] (2) According to a cycle of 5 to 6 seconds, the switching test of multiple gears is carried out, and the switching test process of every two gears is as follows: the initial input speed is lower than the maximum output power of the engine. The transmission is running, and the transmission under test...

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Abstract

The invention discloses an AMT (Automatic Mechanical Transmission) synchronizer fatigue life testing method and a test bench for realizing the method, belonging to the technical field of automobile transmission. The testing method is characterized in that quite many times of gear shifting tests are performed on two gears of all conventional gear shifting of an AMT synchronizer to be tested, and the fatigue life of the AMT synchronizer is judged according to the state of an AMT to be tested in the entire testing process. The test bench comprises a control cabinet, a variable-speed motor, a synchronizing belt, a transmission shaft, a computer, an automatic transmission control unit installation base and a to-be-tested AMT installation base. By adopting the technical scheme provided by the invention, the AMT synchronizer fatigue life testing method and the test bench for realizing the method have the advantages that the technical scheme is simple and easy to implement, the fatigue life of the synchronizer of the AMT of an automobile is proved, the synchronizer is enabled to meet the requirement on the life of the AMT of the automobile, the reliability of the synchronizer is guaranteed and the blank of the AMT synchronizer fatigue life testing method is filled.

Description

technical field [0001] The invention belongs to the technical field of automobile transmission, and relates to a test method and a test stand for a synchronizer. Background technique [0002] With the continuous improvement of transmission technology, the trend is from manual transmission to automatic transmission. Mechanical automatic transmission (AMT) is obtained by adding an electronically controlled automatic transmission control system on the basis of the original manual transmission. It has been widely used for its advantages of simple operation, low cost and reliable operation. [0003] For the transmission, the shifting comfort directly affects the comfort of the vehicle. Synchronizer is the main part of gear shifting, and its design, manufacturing precision and fatigue life directly affect the gear shifting performance of the transmission. If the synchronizer fails during the shifting process, there will be abnormal noise during shifting, and in severe cases, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
Inventor 赵烤蕊扈琳张新桂陈勇罗大国冯擎峰
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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