| 摘要 |
<p>PURPOSE:To facilitate clutch operation and prevent the excessive slip of the clutch and the connection shock by controlling a duty control valve installed into a hydraulic circuit for continuous drive by the signal supplied from an engine control circuit. CONSTITUTION:A duty control valve 38 is installed into a hydraulic circuit 28 for continuous drive, and said duty control valve 38 is controlled by the signal supplied from an engine control circuit 42. Therefore, accelerator operation and clutch operation can be executed automatically in the engine operation control circuit 42. Thus, the manhour necessary for switching the gear ratio can be reduced by a large margin, and the burden of or an operator can be lightened. Since a clutch 10 can be kept at half connection position, the excessive slippage of the clutch 10 and the connection shock can be prevented, even if the half connection position is varied because of the dispersion of products or the wear-out of the clutch.</p> |
