Research On Thermal Field Analysis And Temperature Prediction Model Of Multi-disk Wet Clutch

For the current China is developing rapidly gearbox transmission automation for the research study of the wet multi-disk diskdisk clutch is a very core key technology. In the wet multi-disk diskdisk clutch developed based on transmission system, its performance and life are under wet multi-disk diskclutch performance impact. Especially temperature but also affect wet multi-disk diskclutch the job characteristics a crucial factor. On the one hand, due to the temperature of the wet multi-disk diskclutch friction coefficient that friction, compaction force, vice working surface area and properties such as wear is very significant change happened, directly affects car started, shift performance and life;On the other hand. If wet multi-disk diskclutch at work temperature is greater than the heat capacity design itself, it will lead to limit the wet multi-disk diskclutch friction slices and dual pieces of steel happen, and partial or whole deformation caused by wet multi-disk diskclutch failure, direct influence vehicle reliability and safety.Establish wet multi-disk diskclutch temperature analysis and calculation model and its working temperature, on this basis, the fixed a series of performance parameters of the clutch and the control strategy for the clutch provide decision-disk diskmaking reference for improving the use of the transmission, the use of performance and improve its service life and reliability has the extremely vital significance.This paper through the establishment of the dynamic model of the wet multi-disk diskclutch, calculated, temperature model with planets row of EVT hybrid vehicle wet multi-disk diskclutch in two different starting conditions, the friction work under certain conditions wet multi-disk diskclutch friction pair ; the change of the temperature Through the establishment of a temperature threshold method for wet multi-disk diskclutch of heat overload protection. To avoid the clutch temperature control by the lag effect, gray system theory predict the wet multi-disk diskclutch friction pair, the temperature change trend for further research of improved control strategy of the wet multi-disk diskclutch lay a certain foundation.paper about wet multi-disk diskclutch working temperature characteristics of research, to solve transmission because the temperature of the clutch bring change, clutch performance using life shorten and vehicle safety and so on a series of problems with certain theoretical and practical significance.