Measuring method for fatigue durability test of P-block parking mechanism of automobile automatic transmission
A technology of automatic transmission and parking mechanism, which is applied in the test and measurement of automatic transmission P-block parking performance, and in the field of fatigue durability test and measurement of automobile automatic transmission P-block parking mechanism, to achieve reliable working principle, simple implementation, ensure accuracy and reliability sexual effect
Inactive Publication Date: 2017-04-12
CHONGQING UNIV OF TECH +1
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[0003] Therefore, how to carry out the bench test of the fatigue durability of the P gear parking mechanism according to the actual vehicle installation state of the automatic transmission, there is no report on the relevant test and measurement methods at home and abroad at present.
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[0024] Example: see image 3 , The method disclosed in the present invention is based on a fatigue and durability test measurement device of an automatic transmission P gear parking mechanism; the test and measurement device comprises an iron foundation 1, a transmission mounting base 2, Automatic transmission to be tested 3, half shaft 4, torque sensor 5, sensor base 6, loader 7, loader base 8, brake 9, brake controller 10, loading controller 11, computer 12, data collector 13, The motor controller 14 , the shifter base 15 , the motor base 16 , the drive motor 17 , the shifter 18 , the shift cable 19 and the shift manipulator 20 . Among them, the torque sensor 5 , the loader 7 and the data collector 13 are selected according to the working parameters of the automatic transmission 3 to be tested.
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The invention discloses a fatigue endurance test measuring method for an automobile automatic gearbox P-gear parking mechanism. According to the method, a computer starts a driving motor through a motor controller so as to control the parking mechanism to park at the P gear; the computer collects torque signals output by a torque sensor through a data collector in real time, and whether P-gear parking is successful or not is judged according to collected torque of an axle shaft of the automatic gearbox to be measured; the computer automatically accumulates the number of recording tests until a stipulated number of tests are completed or the P-gear parking mechanism is ineffective, and the computer automatically ends testing. Test measuring is performed on the fatigue life of the P-gear parking mechanism through simulating test working conditions, on an ascending road and a descending road, of the automatic gearbox, so that the reliability and accuracy of the fatigue endurance tests performed on the automobile gearbox P-gear parking mechanism are improved.
Description
technical field [0001] The invention relates to the technical field of automobile testing, in particular to a method for measuring the parking performance of automatic transmission P gear in an automobile power system, and in particular to a method for measuring fatigue durability of a parking mechanism of automatic transmission P gear. Background technique [0002] With the development of automobile transmission technology, automatic transmission has become an important development direction of automobile transmission due to its characteristics of easy operation, comfortable driving and smooth shifting. As an important part of the automatic transmission, the P-block parking mechanism is composed of a locking gear, a locking pin pawl and a set of parking actuators. Usually, the locking gear is rigidly connected to the transmission output shaft. The pin pawl and the parking actuator are fixed to the transmission housing. When the automatic transmission is not engaged in the ...
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IPC IPC(8): G01M13/02
Inventor 张志刚石晓辉李尚施全郝建军邹喜红余勇陈炎云
Owner CHONGQING UNIV OF TECH
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