According to the excessive heat of hydraulic mechanical transmission

heating mechanism on torque converter is explained.With a certain type of torque converter in bulldozers

the relationship between heat production and transmission ratio is described by Matlab programing

which on the basis of thermal analysis model.Meanwhile

the oil temperature on different ratio can be simulated by simulink

the result reflects the dynamic changing trend of hydraulic oil temperature.It will provide some technical reference for the analysis of chassis oil cooling system.