| 摘要 |
PURPOSE:To quickly carry out convergence to the set vehicle speed by setting the set vehicle speed on the basis of an operating amount of an operation pedal, reducing a clutch pressure of an engaged clutch when an actual vehicle speed is higher than the set vehicle speed, and increasing a clutch pressure of a released clutch. CONSTITUTION:When forward moving is selected by means of a forward-backward moving switching lever, for example, a valve driving circuit 71 in a clutch operating unit 70 actuates ECMV 72, 73 so as to engage a forward moving clutch 35 and to release a backward moving clutch 34. When an inching pedal is operated, its operating amount is detected by an inching sensor 52, and a vehicle speed signal corresponding to the operating amount is computed. Subsequently, a valve operating amount is read out on the basis of the vehicle speed signal and an engine rotational speed signal to be given to the clutch operating unit 70, and the forward moving clutch 35 is engaged so that a vehicle is run, and in this process, a clutch pressure of the forward moving clutch 35 is reduced when an actual vehicle speed is higher than the set vehicle speed, while a clutch pressure of the backward moving clutch 34 is increased, so that the backward moving clutch 34 is operated as a brake and convergence to the set vehicle speed is increased.
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