| 摘要 |
PCT No. PCT/JP89/01147 Sec. 371 Date Jun. 25, 1990 Sec. 102(e) Date Jun. 25, 1990 PCT Filed Nov. 8, 1989 PCT Pub. No. WO90/05254 PCT Pub. Date May 17, 1990.There is disclosed an apparatus which controls a variable delivery motor installed on a hydraulically operated vehicle in such a way that the maximum vehicle speed can be continuously varied without sacrificing the performance of the nonstep variable speed, hydraulically operated vehicle. The apparatus includes a hydraulic pump (1) connected with the variable delivery hydraulic motor (2) by main circuits (24, 25), a cylinder (31) that controls the motor (2), a control pump (3) delivering pilot pressure, and a vehicle speed limiter (122). Higher pressure is produced inside the main circuits. The limiter limits the minimum capacity of the motor (2), depending on the higher pressure and also on the pilot pressure acting on the cylinder (31).
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