| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a traveling state from rapidly changing by controlling engine sped so as to be lowered when a sub-speed change gear is shifted to a high speed stage when a front wheel double speed device and an automatic brake device are in operatable states. SOLUTION: Within a control unit 50, a target value such as engine speed to be a target when a speed reduction control is performed or a lowering degree from detected engine speed is preliminarily set. When a high speed stage detection switch 61 is turned on in a state of a front wheel double speed device and an automatic brake equipment operatable, the present detected engine speed and the target value are compared and calculated and a deviation of both speed and the value is calculated. Driving amount of an actuator 72 is calculated based on the deviation, a fuel injection device 71 is operated by the actuator 72, fuel supply quantity to an engine 5 is metered and engine speed is controlled to target speed.</p> |
