Study On Running-in And Wear Characteristics Of Wet Clutch Friction Pair

In the automobile transmission system, the automatic transmission system has become an important direction of vehicle technology development. Clutch is a key part of automatic transmission system, and affects the automatic performance and reliability of transmission system. Running-in period is an important stage before the normal work for wet clutch friction pair Effective running-in process can enhance the whole performance and prolong the service life of wet clutch. In this paper, characteristics of the running-in and wear of wet clutch friction are the objects of study, mainly content of the thesis is as follows:In order to explain the significance of this research, the paper introduces automatic transmission system and characteristics of its key components, wet clutch. And then, expounds the domestic and foreign research status in characteristics of the running-in and wear of wet clutch friction, and illustrates the source, meaning, and main content of the subject.Describes the clutch comprehensive performance test system which the paper relies on, including the general situation, several key techniques and automatic control software of the test system.Analyses the running-in process of wet clutch friction pair, and research its change trend of performance during running-in period. The paper also establishes the abrasion model of wet clutch friction pair, and analyses the impact factor. Finally the more rapid and effective methods for running-in process are put forward.Higher order cumulants are new technology in modern signal processing. In order to predict the run-in state, the paper analyses the torque signal of wet clutch friction pair using second and third order cumulants, and puts forward a new method for the prediction of run-in state of wet clutch friction pair.