Patent ID: 7604566
Filing Date: 2009-10-20
Classification: F16H,Y10T

Abstract:
1. A torque converter lockup clutch system for an associated automatic transmission, comprising: a torque converter including an impeller operatively coupled to an associated internal combustion engine and a turbine operatively coupled to an input shaft of the associated automatic transmission; a lockup clutch disposed within the torque converter for selectively locking the impeller to the turbine, the lockup clutch having an engaged state and a disengaged state; a pressure regulator operatively coupled to the torque converter for adjusting the pressure of a working fluid to at least one shift clutch of the associated automatic transmission in response to a speed differential between the impeller and the turbine of the torque converter; a shift clutch slip detector for detecting a slip condition of the at least one shift clutch of the associated automatic transmission, the slip detector outputting a slip value; and a processing component receiving the slip value and prohibiting the lockup clutch from entering into the engaged state, when the slip value exceeds a predetermined shift clutch slip threshold.