TRAVELING CONTROLLER EQUIPPED WITH HYDRAULIC PUMP FOR VEHICLE

摘要

PURPOSE:To provide a traveling controller for a vehicle which is equipped with a pump which can carry out stable traveling even if one wheel idle- revolves. CONSTITUTION:A hydraulic pump 11 is driven by an enginne 12. The left and right driving wherls 13L and 13R of a vehicle are directly diiven by the hydraulic motors 14L and 14R for traveling. The hydraulic motors 14L and 14R are driven by the working oil supplied from the hydraulic pump 11. Solenoid valves 21a and 21b are installed in a conduit leading from the hydraulic pump 11 to the hydraulic motor 14L, and solenoid valves 22a and 22b are installed midway in the conduit leading from the hydraulic pump 11 to the hydraulic motor 14R. Revolution sensors 23L and 23R are installed on the motor shafts of the hydraulic motors 14L and 14R for traveling. A controller 24 judges the idle revolution of oen wheel from the difference of the number of revolution which is detected by the revolution sensors 23L and 23R, and solenoid valves 21a, 21b, 22a, and 22b on the hydraulic motors 14L and 14R sides for traveling in idling are opened.