TRANSMISSION SYSTEM WITH CLUTCH BITE POINT LEARNING LOGIC

摘要

A method for learning the bite point of a position-controlled clutch in a vehicle having an engine and a transmission includes commanding an engagement of a clutch fork via a controller when the transmission is in park and the engine is idling. The method also includes controlling an apply position of the clutch via the controller, calculating a clutch torque capacity of the clutch, and measuring the apply position via a position sensor. The apply position is recorded as the clutch bite point when the calculated clutch torque capacity equals a calibrated clutch torque capacity. The transmission is then controlled using the recorded clutch bite point. A system includes the transmission, input clutches, and a controller configured to execute the method. A vehicle includes an engine, the transmission, the position-controlled input clutch, and the controller, as well as a clutch position sensor.

主权项

1. A method for learning the clutch bite point of a position-controlled clutch in a vehicle having an engine and a transmission, the method comprising:
commanding an engagement of a clutch fork in the transmission via a controller when the transmission is in a park state and the engine is idling; controlling an apply position of the position-controlled clutch via the controller; calculating a clutch torque capacity of the position-controlled clutch while controlling the apply position; measuring the apply position via a position sensor when the calculated clutch torque capacity equals a calibrated clutch torque capacity; recording the measured apply position as the clutch bite point in memory of the controller; and controlling the transmission using the clutch bite point.