Patent ID: 9580076
Date: 2017-02-28
CPC Classifications: B60K,B60W,B60Y,F16H,Y02T

Claim:
1. A vehicle controller comprising: a rotation driving source generating a driving force of a vehicle; a clutch interposed between the rotation driving source and a driving wheel and generating a transmission torque capacity according to a hydraulic pressure command value; a variator interposed between the driving wheel and the clutch and formed from a primary pulley at an input side and a secondary pulley at an output side and a belt wound around these pulleys; a revolution speed control unit that performs a slip control of the clutch and also performs a revolution speed control of the rotation driving source so that a revolution speed at a rotation driving source side of the clutch is higher than a revolution speed at a driving wheel side of the clutch by a predetermined speed; a vehicle stop state judgment unit that judges a stop state of the vehicle; a torque detection unit that detects an actual torque of the rotation driving source; a lowest-state judgment unit that judges a lowest-state of a transmission ratio of the variator; a vehicle-stop-time transmission torque capacity correction unit that, when the vehicle stop state is judged, while executing a learning control of the hydraulic pressure command value of the clutch, executes the learning control that learns the hydraulic pressure command value of the clutch so that the transmission torque capacity of the clutch gets closer and closer to zero, and sets the hydraulic pressure command value; and a speed control unit that controls the transmission ratio of the variator according to a vehicle operating condition, and the speed control unit being configured to, on the basis of a condition that a target transmission torque capacity of the clutch is a predetermined value or less and the learning of the hydraulic pressure command value of the clutch by the vehicle-stop-time transmission torque capacity correction unit is converged, perform a vertical sliding speed control of the variator which changes the transmission ratio of the variator to a low side when the vehicle is in the stop state and the transmission ratio of the variator is not in the lowest-state.