Pumps – With condition responsive pumped fluid control – Plural separate sensing means for a single fluid controller
Patent
1995-08-25
1996-08-20
Gluck, Richard E.
Pumps
With condition responsive pumped fluid control
Plural separate sensing means for a single fluid controller
417286, 417310, F04C 214
Patent
active
055473490
ABSTRACT:
An oil pump system includes an oil pump, a first hydraulic passage, a second hydraulic passage, a return hydraulic passage, and a control valve. When a revolving speed of a rotor of the oil pump is low, and when a hydraulic pressure of a hydraulic oil, discharged out of a first outlet port of the oil pump to the first hydraulic passage, is lower than a predetermined value, a valve body of the control valve is placed at a first position, thereby joining the hydraulic oil, flowing in the first hydraulic passage, with the hydraulic oil, discharged out of a second outlet port of the oil pump to the second hydraulic passage, and delivering the thus joined hydraulic oil to a hydraulic oil receiving unit via a hydraulic-oil-delivery passage. When the revolving speed of the rotor is high, and when the hydraulic pressure of the hydraulic oil, discharged out of the first outlet port to the first hydraulic passage, is higher than the predetermined value, the valve body is placed at a second position, thereby inhibiting the hydraulic oil from joining, and delivering only the hydraulic oil, discharged out of the first outlet port to the first hydraulic passage, to the aforementioned destination. The oil pump system is downsized and lightweighted advantageously, and is improved in terms of work efficiency and on-boardability.
REFERENCES:
patent: 2655109 (1953-10-01), Walker
patent: 3951575 (1976-04-01), Motomura et al.
patent: 4838767 (1989-06-01), Ohe et al.
patent: 5199854 (1993-04-01), Aoyama
patent: 5226802 (1993-07-01), Nakamura et al.
Kimura Ichiro
Miyazaki Hisashi
Aisin Seiki Kabushiki Kaisha
Gluck Richard E.
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