Patent ID: 8364361
Filing Date: 2013-01-29
Classification: F16D,Y10T

Abstract:
1. A method for controlling a clutch assembly, the method comprising: detecting an active fill phase of the clutch assembly; controlling an actual fill pressure for the clutch assembly using a first set of open-loop control logic when said active fill phase is detected; detecting an actual end-of-fill (EOF) event representing a completion of said active clutch fill phase; detecting a step in a commanded clutch pressure after said actual EOF event is detected; comparing said detected step to a threshold value; determining a predicted EOF event representing a required EOF pressure; and controlling an actual clutch pressure to the clutch assembly using closed-loop control logic when one of said actual EOF event is detected and said predicted EOF event is determined, including supplying said actual clutch pressure according to a second set of open-loop control logic when said detected step exceeds said threshold value.