Method to determine set characteristic of control change pressure for lock-up clutch of torque converter entails calculating pressure before control change from design characteristic of control change torque and clutch build data

摘要

The method to determine the set characteristic of the control change pressure for the lock-up clutch of a torque converter, which has a pump wheel, turbine wheel and stator and driven by a motor, entails calculating the control change pressure before the control change from the design characteristic of the lock-up clutch's control change torque and from the construction data of the lock-up clutch, and before engagement of the control change measuring certain values, namely the pump RPM, the pump RPM gradient, the turbine RPM, and the turbine RPM gradient before the control change.