发明名称 |
VARIABLE DISPLACEMENT PUMP |
摘要 |
A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
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申请公布号 |
US2013164163(A1) |
申请公布日期 |
2013.06.27 |
申请号 |
US201213615709 |
申请日期 |
2012.09.14 |
申请人 |
OHNISHI HIDEAKI;SAGA KOJI;WATANABE YASUSHI;HITACHI AUTOMOTIVE SYSTEMS, LTD. |
发明人 |
OHNISHI HIDEAKI;SAGA KOJI;WATANABE YASUSHI |
分类号 |
F04C2/00 |
主分类号 |
F04C2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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