| 摘要 |
This specification discloses an off-road vehicle employing an improved hydrostatic drive system including engine driven variable displacement pumps having respective actuating members for varying displacement in two directions equivalent to forward and reverse directions, wheel motors at each wheel representing hydraulic actuating device operable by the fluid from the pump, hydraulic reservoir, serially interconnecting supply and return lines, and an improvement comprising one or more operator control members and a sensitivity control means for controlling the range of movement of the actuating member responsive to movement of the operating control member in a respective direction. Also disclosed is a preferred embodiment in which four wheel hydrostatic drive is employed with an option of converting the hydraulic fluid output that normally goes to one set of wheels such that all of the fluid goes to the other set of wheels for road speed operation. Also disclosed are the details of preferred structural embodiments.
|
