Lock-up torque converter with an improved clutch-slip control arrangement

摘要

A clutch-slip control arrangement for a lock-up torque converter includes an orifice which is variable in opening in response to relative rotation or relative axial movement of a turbine hub and an output hub. In accordance with the present invention, a friction member is interposed between the turbine hub and the output hub for changing a performance characteristic of the orifice in such a manner that an orifice opening characteristic is different from an orifice closing characteristic.