Title:
可変容量形オイルポンプ
Document Type and Number:
Japanese Patent JP6622809
Kind Code:
B2
Abstract:
A variable displacement oil pump includes: a pump constituting section; a movable member; an urging mechanism; a control hydraulic chamber group; a drain mechanism arranged to discharge the oil from a specific one control hydraulic chamber of the control hydraulic chamber group; and a control valve which into which the oil of an upstream side that is discharged from the discharge portion, or the oil from the control hydraulic chamber is introduced as a control hydraulic pressure, which is arranged to supply the oil of the upstream side that is discharged from the discharge portion to the specific one control hydraulic chamber, or to discharge the oil from the specific one control hydraulic chamber by the drain mechanism to regulate the pressure of the specific one control hydraulic chamber.
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Inventors:
Naganuma Atsushi
Hideaki Onishi
Hideaki Onishi
Application Number:
JP2017534146A
Publication Date:
December 18, 2019
Filing Date:
July 14, 2016
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F04C14/22; F04C2/344; F04C14/00
Domestic Patent References:
| JP2015021400A | ||||
| JP2014051924A |
Foreign References:
| WO2014038302A1 | ||||
| WO2016125639A1 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi