发明授权
- 专利标题： Device and method for determining the start of injection in a direct-injection internal combustion engine
- 专利标题（中）： 用于确定直喷式内燃机中的喷射开始的装置和方法
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申请号： US09218848申请日： 1998-12-22
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公开(公告)号： US06553819B1公开(公告)日： 2003-04-29
- 发明人: Ralf Schernewski , Achim Przymusinski , Thomas Brandmeier
- 申请人： Ralf Schernewski , Achim Przymusinski , Thomas Brandmeier
- 优先权： DE19757293 19971222
- 主分类号： G01M1500
- IPC分类号： G01M1500
摘要：
A device for determining a start of injection in a direct-injection internal combustion engine has a magnetoelastic pressure sensor disposed in an injection line leading to an injection valve which detects pressure changes in the injection line owing to an injection process of the injection valve by utilizing the magnetoelastic effect. The device also has an evaluation device that determines a dead time between an initiation of the injection process and the start of injection with the aid of the measurement signal of this magnetoelastic pressure sensor.
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