| 摘要 |
PROBLEM TO BE SOLVED: To reduce loss horsepower by installing a low-pressure hydraulic pump.SOLUTION: A hydraulic system for a work vehicle includes: a high-pressure type hydraulic pump 30 for pressure-feeding a hydraulic fluid to a hydraulic actuator such as hydraulic cylinders 13, 38 and hydraulic clutches 47, 53, 54, 55; and the low-pressure type hydraulic pump for feeding a lubricant to a tooth meshing part and a sliding part of a power transmission system. In the hydraulic system, a pump shaft 30a of the high-pressure type hydraulic pump 30 is connected to an engine 3 so as to be driven by the engine and a pump shaft of the low-pressure type hydraulic pump is connected to an electric motor 62 so as to be driven by the electric motor. |
