RUNNING CONTROL DEVICE FOR WORKING VEHICLE

PROBLEM TO BE SOLVED: To reduce the fuel consumption and the noise at the running of a working vehicle by reducing an engine speed than a command value by a command means when an output revolving speed and an input revolving speed approach within a predetermined threshould value. SOLUTION: A running control device for the working vehicle is provided with a torque converter 3 for running to transmit output torque of an engine 1 to a transmission device 4, an input revolving speed detecting means 10 to detect an input revolving speed Ni input into the torque converter 3, an output revolving speed detecting means 11 to detect an output revolving number No output from the torque converter 3, a command means 13 to command the engine speed Ns, and a revolving speed control means 12 to control the engine speed to the command value Ns by the command means 13 when the output revolving speed No detected by the output revolving speed detecting means 10 is apart from the input revolving speed Ni detected by the input revolving speed detecting means 11 beyond a fixed one, and to reduce the engine speed than the command value Ns by the command means 13 when the output revolving speed No approaches the input revolving speed Ni beyond a fixed one. COPYRIGHT: (C)2005,JPO&NCIPI