Hydrostatic transmission control system

Details Hydrostatic transmission control system Hydrostatic transmission control system

1979-07-26

1981-08-11

Cohen, Irwin C.

Power plants

Pressure fluid source and motor

Control relative to independently driven oscillator, speed...

60444, 60490, F16H 3946

Patent

active

042827116

ABSTRACT:
The hydrostatic transmission control system includes a first and second two-position solenoid valve which function to alter the hydraulic fluid parameters as delivered to the servo control cylinders of a variable displacement pump associated with a hydrostatic transmission. Activation of the first solenoid valve instigates a varying of pump displacement. Once the desired pump displacement has been achieved, the second solenoid valve is activated to maintain the desired pump displacement. The deactivation of both solenoid valves results in the hydrostatic transmission seeking and maintaining a neutral mode.

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patent: 4168612 (1979-09-01), Nikolaus
patent: 4194361 (1980-03-01), Pahl

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