Simulation Research On The Dynamic Characteristics Of The Wet Clutch

In recent years, due to improved structure and manufacturing technology, multi-platewet clutch has been further developed, its applications continue to expand. Compared withdry clutch,wet clutch has many advantages, the friction surfaces by oil cooling, the heatgenerated constantly being taken away, thus allowing a longer time to start the process ofsliding friction without causing friction discs burned. With the change of the frictioncoefficient used for holding a stable range, the starting performance of the vehicle has acertain role. Wet clutch is the key component of automatic transmission, has direct influenceon the operation of the automatic transmission. In this paper, simulation studies formulti-plate wet clutch work process dynamics, the main content of their study are asfollows:(1)Analysis of factors affecting wet clutch, comprising friction material, the frictionsurface grooves, the temperature and the oil;(2)Based on the analysis of wet clutch engaging process based on the dynamiccharacteristics of oil membrane, through the establishment of extrusion, compaction andrough contact the mathematical model of three phases, the construction of a wet clutchengaging process dynamic nonlinear mathematical model of deep dynamic couplingcharacteristics of wet clutch;(3) According to build mathematical model, based on the liberation of a heavy vehicleusing matlab/simulink has set up a simulation model for the wet clutch combination process,the model consists of oil film thickness, viscous torque module, rough torque module, andthe resulting total wet clutch transmission torque variation law. Through the change of theinput parameters of the wet clutch applied load, the friction material permeability andsurface roughness of friction plate on the influence degree of the module parameters, furtherstudy of the three parameters effect on the binding process of wet clutch; (4) Base on the research content has set up a test bench for the wet clutch, because of thelimitation of bench, the bench on the parameters of the input to the established simulationmodel, through the contrast with simulation results and test results analysis, the changetrend of the basic are the same, verify the validity of the model, to establish the simulationmodel is reasonable and perfect.The whole article more depth was studied theoretically the whole working process andcharacteristics of wet clutch, and set up by the accuracy of the models is verified by test, forthe future of the wet clutch application promotion laid a certain foundation.