| 摘要 |
<p>PURPOSE:To contrive facilitation of operation of a clutch, by driving the clutch in the engaging direction quickly up to a semiengaged state from a disengaged state through duty opening and losing control of a hydraulic control valve and in its reverse process it is done gradually. CONSTITUTION:When completion of changeover of a gear ratio is confirmed by a detected value 104 of a shift position due to a matter that it is applied to form a shift position detector 46, duty closing and opening control of a duty solenoid valve 38 is started through a driving current 118. Then hydraulic pressure to a clutch release cylinder 22 is released rapidly to a low pressure side through an orifice 40 and the duty solenoid valve 38. At this time, as a stroke of a clutch 10 is being monitored by an engine control circuit 42 through a position detecting signal 100 of a position detector 44, when the clutch is turned into a semiengaged state, the clutch 10 is controlled by controlling the duty solenoid valve 38 in an open state intermittently so that the clutch 10 is turned into an engaged state gradually.</p> |
