| 摘要 |
<p>PURPOSE: To obtain a smooth travel state without impairing riding comfort at the time of limiting the vehicle speed in accelerating travel and enable the setting of the vehicle speed limit value to the specified vehicle speed value suited to loaded weight, environmental conditions, etc. CONSTITUTION: A vehicle speed limiting device for a working vehicle having an accelerator pedal 1, a depression stroke detector 2 for the accelerator pedal 1, an engine control device 40 and an engine 45 is provided with a vehicle speed detector 3 for detecting the vehicle speed, and a vehicle speed control device 10 provided among the depression stroke detector 2, the vehicle speed detector 3 and an engine control device 40. A vehicle speed signal and a depression stroke signal are inputted to the vehicle speed control device 10, and when the vehicle speed signal becomes larger than the specified vehicle speed limit value or the vehicle speed threshold, the vehicle speed control device 10 computes a corrected depression stroke signal corrected on the basis of the deviation value and a control gain so as to reduce the deviation between the vehicle speed signal and the vehicle speed limit value and outputs the corrected depression stroke signal to the engine control device 40.</p> |
