发明申请
US20090312932A1 FUEL SYSTEM DIAGNOSTICS BY ANALYZING ENGINE CRANKSHAFT SPEED SIGNAL
有权
通过分析发动机起动速度信号的燃油系统诊断
- 专利标题： FUEL SYSTEM DIAGNOSTICS BY ANALYZING ENGINE CRANKSHAFT SPEED SIGNAL
- 专利标题（中）： 通过分析发动机起动速度信号的燃油系统诊断
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申请号： US12139782申请日： 2008-06-16
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公开(公告)号： US20090312932A1公开(公告)日： 2009-12-17
- 发明人: Yue-Yun Wang , Ibrahim Haskara , Chol-Bum M. Kweon , Frederic Anton Matekunas , Paul Anthony Battiston
- 申请人： Yue-Yun Wang , Ibrahim Haskara , Chol-Bum M. Kweon , Frederic Anton Matekunas , Paul Anthony Battiston
- 申请人地址： US MI Detroit
- 专利权人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- 当前专利权人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- 当前专利权人地址： US MI Detroit
- 主分类号： F02D41/00
- IPC分类号： F02D41/00
摘要：
Combustion within an internal combustion engine is diagnosed and includes monitoring crankshaft angular velocity and generating a combustion phasing value for a combustion chamber based on the crankshaft angular velocity. The combustion phasing value is compared to an expected combustion phasing value based on a predetermined start of injection crank angle and combustion phasing differences greater than an allowable combustion phasing difference are identified based on the comparison.
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