Oil processor circuit

Details Oil processor circuit Oil processor circuit

1995-12-13

1997-09-16

Michalsky, Gerald A.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

165280, F15B 2104

Patent

active

056668074

ABSTRACT:
Oil coolers are commonly used in hydraulic systems for maintaining oil below a preselected temperature under normal operating conditions. The subject oil cooler circuit includes a pilot operated valve disposed in a conduit connecting the hydraulic system to the cooler and an electromagnetic pilot valve connected to one end of the pilot operated valve. The pilot valve is spring biased to its closed position when the temperature of the oil is above a predetermined temperature and is moved to an open position when the oil temperature is at or below the predetermined temperature. The end is vented to a tank at the open position of the pilot valve so that the pilot operated valve is maintained at the closed position to prevent cold viscous oil from being transmitted to the oil cooler when the oil temperature is below the predetermined temperature.

REFERENCES:
patent: 3174410 (1965-03-01), Booth et al.
patent: 3498061 (1970-03-01), Prucha et al.
patent: 4306966 (1981-12-01), Lucia
patent: 4487255 (1984-12-01), Bianchetta et al.
patent: 4680928 (1987-07-01), Nishikawa et al.
patent: 5165377 (1992-11-01), Hosseini
patent: 5395519 (1995-03-01), Miller

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