Oil pump apparatus
AssigneeAisin Seiki Kabushiki Kaisha
InventorsHisashi Miyazaki, Ichiro Kimura, Kongo Aoki, Yoshinori Miura
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Abstract
An oil pump apparatus incorporates, an oil pump housing, and a rotor located in the oil pump housing, wherein the rotor forms a first set of pockets having a capacity increasing toward the rotating direction of the rotor and a second set of pockets having a capacity decreasing toward the rotating direction of the rotor. The apparatus further includes a plurality of suction ports connected with the first set of pockets, each of the suction ports being isolated from other adjacent suction ports, a discharge port connected with the second set of the pockets, and a control valve.
Claims6
An oil pump apparatus comprising:
- an oil pump housing;
- a rotor located in the oil pump housing, the rotor forming a first set of pockets having a capacity increasing toward a rotating direction of the rotor and a second set of pockets having a capacity decreasing toward the rotating direction of the rotor;
- a plurality of suction ports connected with the first set of pockets, each of the suction ports being isolated from other adjacent suction ports;
- a discharge port connected with the second set of the pockets;
- and
- a control valve operatively positioned to control fluid flow through said plurality of suction ports and said discharge port wherein
- the control valve is operatively connected to select between a first condition in which the control valve connects the suction ports and a second condition in which the control valve connects the discharge port with one of the suction ports and cuts off said other suction ports.
Dependencies are inferred from the claim text.