| 摘要 |
A motor vehicle, preferably with a fuel injection engine, has a coupling, such as a multi-point hitch, connectable to an attachment. One or more of the hitch's arms are pivotable about a connection to the vehicle, and when the attachment is pushed, pulled or raised, the force resulting therefrom causes a rod associated with a variable speed torque converter to be displaced. The converter is a hydraulic pump-motor combination with swash plates pivotable to change the motor's output responsive to the rod's movement. The arrangement automatically slows or increases drive from the converter to the driven wheels when the attachment load changes. The control includes a valve in a hydraulic circuit actuated by the rod or other component. A sun-planet gear system is driven via the hydraulic motor to change the output to the vehicle's wheels while maintaining a constant engine speed. A brake on an annular drive member is operated manually to vary the converter's effect. In another embodiment, engine fuel injector plungers are reciprocated in stationary housings by cams to inject fuel into the engine cylinders. The housings have inlet and outlet bores that receive and return fuel depending on the plungers' positions in their housings. By changing the amount of fuel injected, a rack controlling the plungers by extreme movement in either direction short circuits the hydraulic system so converter's swash plates reduce or change the motor's output.
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