Clutch control apparatus for vehicle

A clutch control apparatus for a vehicle provided with a hydraulic clutch disposed in a middle of a power transmission path between an engine and a drive wheel and brought into an engagement state by hydraulic pressure supplied from the outside,

• wherein before the clutch is brought into the engagement state, an intermittent hydraulic pressure Y is applied to the clutch while maintaining the clutch in a disengagement state, and thereafter a predetermined hydraulic pressure is applied to the clutch to bring the clutch into the engagement state,
• the clutch control apparatus further comprising:
• a gear change mechanism, and
• a solenoid valve adapted to control the hydraulic pressure supplied to the clutch, the hydraulic pressure supplied to the clutch being controlled by controlling successive pulses of a pulsed drive current D supplied to the solenoid valve which in turn applies the intermittent hydraulic pressure Y,
• wherein the intermittent hydraulic pressure Y operates to undulately increase and decrease an operation amount S of the gear change mechanism for each of the successive pulses of the pulsed drive current D,
• wherein an amplitude value and frequency of the pulsed drive current D is set to such a degree that the undulating operation amount S temporarily returns the amplitude value to zero after each of the successive pulses of the pulsed drive current D,
• wherein the operation amount S does not increase for each of the successive pulses of the pulsed drive current D,
• wherein in each of the successive pulses, the amplitude value of the pulsed drive current D is gradually reduced.