Power plants – Pressure fluid source and motor – Having correlated or joint actuation of controller of input...
Patent
1980-01-22
1982-08-17
Cohen, Irwin C.
Power plants
Pressure fluid source and motor
Having correlated or joint actuation of controller of input...
180132, B62D 508, F15B 1304
Patent
active
043442846
ABSTRACT:
A control valve for a hydraulic booster steering system provides gradual control of inlet flow to the system pump to complete cut off of output, or by throttling of inlet flow to effect a pilot stream through the pressure pump. This occurs in the neutral position of the control valve during straight ahead steering. Where flow through the pump intake feed means is thus impeded, the pump simply cavitates in a known manner and to be of a type which is suction regulated, having a check valve means at the pressure outlet side. The advantage of cutting off inlet flow to the pump during straight ahead steering, or at least throttling of such inlet flow by a constantly open throttle passage, is to save energy otherwise wasted in heating the fluid.
REFERENCES:
patent: 3180233 (1965-04-01), Jablonsky
patent: 3910045 (1975-10-01), Herrmann
patent: 3922953 (1975-12-01), Strauff
patent: 3935917 (1976-02-01), Elfy et al.
Cohen Irwin C.
Zahnradfabrik Friedrichshafen AG.
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