VEHICLE CONTROL DEVICE
First Claim
1. A control apparatus of a vehicle including a hydraulic clutch disposed between a driving source and driving wheels and an automatic transmission that is driven and controlled by a hydraulic pressure produced from a line pressure as an original pressure, the hydraulic clutch being actuated by a piston pressure that is produced from the line pressure as an original pressure by a clutch hydraulic control valve, the hydraulic clutch being disengaged by operating a clutch hydraulic actuator to make stroke by controlling the piston pressure as a clutch disengagement hydraulic pressure such that an actual piston stroke position is conformed with a target position, the control apparatus comprising:
- a clutch disengagement control section configured such that upon disengaging the hydraulic clutch, line pressure increase control to increase the line pressure to a value higher than a reference line pressure that is the line pressure determined on the basis of a necessary hydraulic pressure to ensure an operation except for a disengagement operation of the hydraulic clutch, is started at least before the piston pressure reaches the reference line pressure, and the line pressure is reduced when the piston pressure is reduced during the disengagement operation.
1 Assignment
0 Petitions
Accused Products
Abstract
A first clutch CL1 is disposed between engine Eng and left and right rear wheels RL, RR, and control of disengaging first clutch CL1 is performed by setting line pressure PL as an original pressure and executing F/B control of a piston stroke position. In this FR hybrid vehicle, when disengaging first clutch CL1, line pressure increase control to increase line pressure PL to a value higher than a reference line pressure in advance is started at least before a piston pressure reaches the reference line pressure, and line pressure PL is returned to the reference line pressure when the piston pressure is reduced during this disengagement operation.
22 Citations
3 Claims
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1. A control apparatus of a vehicle including a hydraulic clutch disposed between a driving source and driving wheels and an automatic transmission that is driven and controlled by a hydraulic pressure produced from a line pressure as an original pressure, the hydraulic clutch being actuated by a piston pressure that is produced from the line pressure as an original pressure by a clutch hydraulic control valve, the hydraulic clutch being disengaged by operating a clutch hydraulic actuator to make stroke by controlling the piston pressure as a clutch disengagement hydraulic pressure such that an actual piston stroke position is conformed with a target position, the control apparatus comprising:
a clutch disengagement control section configured such that upon disengaging the hydraulic clutch, line pressure increase control to increase the line pressure to a value higher than a reference line pressure that is the line pressure determined on the basis of a necessary hydraulic pressure to ensure an operation except for a disengagement operation of the hydraulic clutch, is started at least before the piston pressure reaches the reference line pressure, and the line pressure is reduced when the piston pressure is reduced during the disengagement operation. - View Dependent Claims (2, 3)
Specification