ENGINE RPM(REVOLUTION PER MINUTE) CONTROL SYSTEM FOR A WORKING VEHICLE, FOR EXECUTING THE FORWARD ROTATION CONTROL BASED ON THE MANIPULATION OF AN INPUT DEVICE IF AN ACCELERATOR LEVER IS OPERATED IN THE OPERATING POSITION IN WHICH THE OUTPUT RPM OF AN ENGINE IS HIGHER THAN THE IDLING RPM

摘要

PURPOSE: An engine RPM(Revolution Per Minute) control system for a working vehicle is provided to prevent the output RPM of an engine from increasing by operation of an input device in the state positioning an accelerator lever in an idling position.;CONSTITUTION: An engine RPM(Revolution Per Minute) control system for a working vehicle is composed of a pedal sensor(32), a foot accelerator control unit, a lever sensor(34), a hand accelerator control unit, and a forward rotation control unit. The foot accelerator control unit controls a foot accelerator which has the engine RPM corresponding to the output of the pedal sensor as the target RPM. The hand accelerator control unit controls a hand accelerator which has the engine RPM corresponding to the output of the lever sensor as the target RPM. The forward rotation control unit controls so that the RPM memorized in a memory device is as the target RPM. If the RPM corresponding to the output of the lever sensor is higher than the idling RPM, the forward rotation control is processed through operation of input devices(37,38). If the RPM corresponding to the output of the lever sensor is less than the idling RPM, the forward rotation control is stopped through operation of the input devices.;COPYRIGHT KIPO 2010