发明授权
US08100112B2 Fuel-supply quantity estimating apparatus and fuel injection system
有权
燃料供给量推定装置和燃料喷射系统
- 专利标题： Fuel-supply quantity estimating apparatus and fuel injection system
- 专利标题（中）： 燃料供给量推定装置和燃料喷射系统
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申请号： US12235917申请日： 2008-09-23
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公开(公告)号： US08100112B2公开(公告)日： 2012-01-24
- 发明人: Kenichiro Nakata , Koji Ishizuka
- 申请人： Kenichiro Nakata , Koji Ishizuka
- 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： JP2007-255355 20070928
- 主分类号： F02D41/30
- IPC分类号： F02D41/30
摘要：
A variation waveform of fuel pressure is obtained by use of a fuel pressure sensor which detects pressure of fuel supplied to an injector. A quantity of fuel supplied to the injector is estimated based on a waveform of the detected pressure that is greater than a reference value due to a fuel pumping, in the obtained variation waveform. Especially, in a case that the fuel pressure sensor is provided to each of a plurality of injectors, it is desirable to obtain the variation waveform based on the output of the fuel pressure sensor provided to a cylinder in which no fuel injection is currently performed.
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