Patent ID: 8210988
Filing Date: 2012-07-03
Classification: F16H,Y10T

Abstract:
1. A controller for a vehicle having installed thereon a drive power source, a transmission, and a torque converter that is equipped with a lockup clutch and is provided between the drive power source and the transmission, comprising: a detection unit that detects an actual revolution speed indicating a real revolution speed of the drive power source; and a control unit that controls the lockup clutch so that a state of the lockup clutch becomes any state from among a disengaged state, an engaged state, and a slip state that is intermediate between the disengaged state and the engaged state, wherein the control unit determines, based on a state of the vehicle, whether to execute a slip control for controlling the lockup clutch to the slip state, sets a target revolution speed indicating a target value of the revolution speed of the drive power source on the basis of the state of the vehicle, and when executing the slip control, compares the actual revolution speed with the target revolution speed, and feedback controls a transmission torque of the lockup clutch on the basis of a comparison result of the actual revolution speed and the target revolution speed so as to cause the actual revolution speed to follow the target revolution speed.