THEORETICAL AND EXPERIMENTAL STUDIES ON THE INTERFACE PHENOMENA DURING THE ENGAGEMENT OF AUTOMATIC-TRANSMISSION CLUTCH

Mathematical models for predicting the temperature and thermal degrada tion have been developed, which include all important phenomena during the engagement of wet friction clutch. The thermal model consists of heat balance for the separator, friction lining, core plate, and ATF i n the clearance. The degradation mechanism and constants for the selec ted friction material obey the zeroth order reaction. The model predic tions show good agreement with experimental measurements.