Hydromechanical drive

Details Hydromechanical drive Hydromechanical drive

1988-12-16

1991-05-28

Kwon, John T.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60449, 60489, 60490, 60491, 60492, F16D 3102

Patent

active

050183516

ABSTRACT:
A hydromechanical drive wherein a prime mover drives an input shaft which, in turn, can drive a coaxial output shaft by way of a clutch or transmission having one or more axial piston pumps. The pressure and/or rate of fluid flow in the pump or pumps is adjustable by one or more valves or by one or more tiltable wobble plates in response to signals from one or more adjusting devices which receive signals from an electronic control circuit. The latter further receives signals from tachometer generators which monitor the RPM of the input and output shafts, from a gauge which monitors the pressure in the pump or pumps, from the valve or valves, or from the adjusting devices(s) for the tiltable wobble plate(s).

REFERENCES:
patent: 3693503 (1972-09-01), Ruhl et al.
patent: 4345436 (1982-08-01), Johnson
patent: 4354420 (1982-10-01), Bianchetta
patent: 4531431 (1985-07-01), Dreher et al.
patent: 4644749 (1987-02-01), Somes
patent: 4712376 (1987-12-01), Hadank et al.
patent: 4745748 (1988-05-01), Hayashi et al.
patent: 4768339 (1988-09-01), Aoyagi et al.
patent: 4793138 (1988-12-01), Baumgartner

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