发明授权
- 专利标题： Method for ascertaining the position of a mobile closing element of an injection valve
- 专利标题（中）： 用于确定喷射阀的移动关闭元件的位置的方法
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申请号： US11089169申请日： 2005-03-25
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公开(公告)号： US07237536B2公开(公告)日： 2007-07-03
- 发明人: Bernd-Heinrich Schmitfranz , Guenter Stoehr
- 申请人： Bernd-Heinrich Schmitfranz , Guenter Stoehr
- 申请人地址： DE Stuttgart
- 专利权人： DaimlerChrysler AG
- 当前专利权人： DaimlerChrysler AG
- 当前专利权人地址： DE Stuttgart
- 代理机构： Crowell & Moring LLP
- 优先权： DE102004015045 20040326
- 主分类号： F02M37/04
- IPC分类号： F02M37/04
摘要：
In a method for ascertaining the position of a mobile closing element of an injector valve in a motor vehicle engine, in which the closing element is driven by a piezoelectric element for opening or closing the injection valve and a voltage signal allocated to an electrical voltage recorded on the piezoelectric element, the position of the closing element is ascertained from the ascertained voltage signal. Through a two-way valve arranged on the injection valve, a change in the voltage signal is brought about based upon a change in the electrical voltage on the piezoelectric element as a function of the position of the closing element.