| 摘要 |
<p>PURPOSE:To facilitate clutch operation by selectively carrying-out the intermittent opening control for each hydraulic control valve on the clutch connection driving hydraulic circuit side and the clutch cut-off driving hydraulic circuit side, according to the engine revolution number in the case when a clutch is driven in the cennection direction. CONSTITUTION:The release fork 20 of a clutch 10 is turning-driven by a cylinder 22 controlled by a hydraulic clutch driving apparatus 24. Said hydraulic driving apparatus 24 is equipped with the hydraulic control valves 36 and 38, etc. installed into the respective hydraulic driving circuits 26 and 28 for driving the clutch 10 in the direction of cut-off and connection. The clutch 10 is cut-off or connected by intermittently opening-controlling each hydraulic control valve 36, 38 by an engine control circuit 42. Further, the above-described control circuit 42 stops the intermittent opening control for the hydraulic control valve 38, when the engine revolution number reduces and the clutch 10 is driven in the direction of connection, and the circuit 42 starts the intermittent opening control for the hydraulic control valve 36.</p> |
