| 摘要 |
PCT No. PCT/JP96/01375 Sec. 371 Date Nov. 17, 1997 Sec. 102(e) Date Nov. 17, 1997 PCT Filed May 23, 1996 PCT Pub. No. WO96/37718 PCT Pub. Date Nov. 28, 1996There is disclosed an apparatus for controlling the capacity of a hydraulic motor (5) in a hydraulically driven motor vehicle, which comprises: a hydraulic pump (2) adapted to be driven by an engine (1) having a variable rotation speed; the hydraulic motor of a variable capacity type adapted to be rotated by a discharge pressure fluid from the hydraulic motor for driving a traveling body that constitutes the motor vehicle allowed to travel; a capacity control section for reducing the capacity of the hydraulic motor when the rotation speed of the engine is increased and for increasing the capacity of the hydraulic motor when the rotation speed of the engine is reduced, the capacity control section having a variable operation rate and being operable at a variety of positions among a maximum capacity position, an intermediate capacity position and a minimum capacity position; and an operation rate control unit for accelerating the operation rate of the capacity control section when it is operating at a position between the maximum capacity position and the intermediate capacity position mentioned above and for decelerating the above mentioned operation rate when the capacity control section is operating at a position between the intermediate capacity position and the minimum capacity position mentioned above.
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