发明名称 |
Druckentlastungsventil |
摘要 |
<p>A pressure relief valve for an oil pump of an automotive internal combustion engine. The pressure relief valve comprises a wall defining thereinside a valve accommodating bore. The wall is formed with a plurality of pressure relief holes including first and second pressure relief holes through which oil in the valve accommodating bore is releasable to an outside of the valve accommodating bore. A valve body is provided to be slidably movable in the valve accommodating bore and along the wall under balance between oil pressure acting on the valve body in a first direction and biasing force of a spring acting on the valve body in a second direction opposite to the first direction. In this arrangement, the second pressure relief hole is opened after the first pressure relief hole is opened to have a maximum cross-sectional opening area in a process of movement of the valve body in the first direction along the axis of the valve accommodating bore.</p> |
申请公布号 |
DE19952287(B4) |
申请公布日期 |
2006.01.12 |
申请号 |
DE1999152287 |
申请日期 |
1999.10.29 |
申请人 |
HITACHI, LTD. |
发明人 |
MORITA, SHOJI;OHNISHI, HIDEAKI |
分类号 |
F04C14/26;F01M1/20;F01M11/00;F04C2/10;F04C15/06;F16K17/04 |
主分类号 |
F04C14/26 |
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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