System for controlling a hydrostatic-mechanical transmission whe

Details System for controlling a hydrostatic-mechanical transmission whe System for controlling a hydrostatic-mechanical transmission whe

1995-02-15

1997-11-04

Park, Collin W.

Boots, shoes, and leggings

60431, 60449, 475 76, F16D 3102

Patent

active

056846940

ABSTRACT:
A control system designed such that if a heavy load is imposed on a vehicle during running and a hydraulic relief state in which an oil pressure in a hydraulic circuit for a hydrostatic transmission unit exceeds a relief pressure is detected, the angle of a discharge controlling swash plate for a pump is reduced to a specified value (e.g., 50% of the maximum angle) or less, whereby the stall of the vehicle and the overheat of machine parts are prevented.

REFERENCES:
patent: 3733931 (1973-05-01), Nyman et al.
patent: 3803843 (1974-04-01), Nyman et al.
patent: 3890783 (1975-06-01), Allen et al.
patent: 3946560 (1976-03-01), MacIntosh et al.
patent: 5394698 (1995-03-01), Takagi et al.
patent: 5406793 (1995-04-01), Maruyama et al.
patent: 5423183 (1995-06-01), Folsom
patent: 5486142 (1996-01-01), Folsom

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