Automatic warming-up apparatus and method thereof in hydraulic s

Details Automatic warming-up apparatus and method thereof in hydraulic s Automatic warming-up apparatus and method thereof in hydraulic s

1994-04-28

1995-05-02

Look, Edward K.

Power plants

Pressure fluid source and motor

Methods of operation

60329, 60431, 417 32, 417 34, F16D 3100, F04B 4900

Patent

active

054108780

ABSTRACT:
An automatic warming-up apparatus and a warming-up method applied in various hydraulic systems which are equipped with an engine and a hydraulic pump driven by the engine, and controlled by a microcomputer. The warming-up apparatus has at least one hydraulic actuator operated by an oil discharged from the hydraulic pump, a first temperature sensor detecting the temperature of a lubricant oil of the engine, a second temperature sensor detecting the temperature of a cooling water of the engine, a third temperature sensor detecting the temperature of a pressurized oil of the hydraulic system, an input/output unit sending to the controller the temperature signals received from the sensors.

REFERENCES:
patent: 5199326 (1993-04-01), Iwatsuki et al.
patent: 5251440 (1993-10-01), Bong-Dong et al.
patent: 5352095 (1994-10-01), Tanaka et al.
English Abstract of Japan 60-119342, Jun. 1985.
English Abstract of Japan 62-167922, Jul. 1987.
English Abstract of Japan 60-147851, Aug. 1985.

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