Lockup clutch modulation system and method

摘要

A torque converter includes an input connected to an engine. An output is connected with a transmission. A lockup clutch is connected with the output and is disposed to engage the input to couple the input with the output via an apply pressure corresponding to a target lockup strategy based on at least one vehicle operating condition. A pressure regulator is configured to modulate the apply pressure. Systems and methods are disclosed.

主权项

1. A torque converter comprising:
an input connected to an engine; an output connected with a transmission; a lockup clutch connected with the output and being disposed to engage the input to couple the input with the output via an apply fluid pressure corresponding to a target lockup strategy based on at least one vehicle operating condition; and a pressure regulator including at least one valve biased to an exhaust orientation and movable to a closed orientation such that the lockup clutch is engageable with the input, the at least one valve being disposed adjacent the lockup clutch and having a fluid pressure sensing surface, the fluid pressure being engageable with the fluid pressure sensing surface such that the at least one valve translates between the orientations to modulate the fluid pressure to the lockup clutch.