Cold oil protection circuit for a hydraulic system

Details Cold oil protection circuit for a hydraulic system Cold oil protection circuit for a hydraulic system

1995-12-13

1996-10-15

Michalsky, Gerald A.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

60427, 91419, 91459, 137468, 13762564, F15B 1308, F15B 2104

Patent

active

055642748

ABSTRACT:
A cold fluid protection circuit is provided for controlling the rate of fluid flow in a hydraulic system in response to the temperature of the oil in a reservoir. The subject invention includes a temperature sensor operative to sense the temperature of the fluid in the reservoir and deliver an electrical signal representative thereof to a controller. The controller processes the sensed temperature with respect to the rate of flow in the hydraulic system that is returning to the reservoir from an actuator through a fluid conditioning mechanism and proportionally reduces the rate of flow therethrough by controllably reducing the displacement of a directional valve mechanism in response to the sensed temperature.

REFERENCES:
patent: 4712376 (1987-12-01), Hadank et al.

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