发明授权
- 专利标题： Vane pump apparatus and leak check system having the same
- 专利标题（中）： 叶片泵装置和泄漏检查系统具有相同的功能
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申请号： US13210731申请日： 2011-08-16
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公开(公告)号： US08800360B2公开(公告)日： 2014-08-12
- 发明人: Tomohiro Itoh , Mitsuyuki Kobayashi , Shinji Sugihara
- 申请人： Tomohiro Itoh , Mitsuyuki Kobayashi , Shinji Sugihara
- 申请人地址： JP Kariya
- 专利权人： Denso Corporation
- 当前专利权人： Denso Corporation
- 当前专利权人地址： JP Kariya
- 代理机构： Nixon & Vanderhye P.C.
- 优先权： JP2010-190467 20100827
- 主分类号： G01M3/00
- IPC分类号： G01M3/00 ; F04B49/06
摘要：
An ECU determines whether condensed water is present at a rotor and vanes based on an electric current, which flows in an electric motor that drives the rotor. When the condensed water is determined to be present, the ECU drives the motor for a predetermined time period. When the condensed water is determined to be absent, the ECU stores a pressure, which is sensed through a pressure sensor, as a first pressure. The ECU is adapted to sense an abnormality in a pump characteristic based on a value of the first pressure.
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