| 摘要 |
A hydraulically operated automobile allowing the fine adjustment of a drive force and allowed to run smoothly and comfortably, comprising a drive means (40) having a hydraulic motor (45) driving a wheel (31) and a rotational speed control means (41) controlling the rotational speed of the hydraulic motor (45). The hydraulic motor (45) further comprises an output shaft (45s) to which the wheel (31) is fitted, a plurality of drive gears (46) connected to the output shaft (45s) and rotating together with the output shaft (45s), a plurality of driven gears (47) meshing with the plurality of drive gears (46), and a plurality of hydraulic chambers in which the gears meshing with each other are stored. The rotational speed control means (41) further comprises a housing (42) having a columnar rotor chamber (42h) and a rotor (43) stored in the rotor chamber (42h) and fitted rotatably around the center axis thereof.
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