Invention Application
WO2010005651A2 FUEL SYSTEM DIAGNOSTICS BY ANALYZING ENGINE CRANKSHAFT SPEED SIGNAL
审中-公开
通过分析发动机起动速度信号的燃油系统诊断
- Patent Title: FUEL SYSTEM DIAGNOSTICS BY ANALYZING ENGINE CRANKSHAFT SPEED SIGNAL
- Patent Title (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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Application No.: PCT/US2009/046049Application Date: 2009-06-03
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Publication No.: WO2010005651A2Publication Date: 2010-01-14
- Inventor: WANG, Yue-Yun , HASKARA, Ibrahim , KWEON, Chol-Bum M.K. , MATEKUNAS, Frederic Anton , BATTISTON, Paul Anthony
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- Applicant Address: 300 Renaissance Center P.O. Box 300 Detroit, MI 48265-3000 US
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
- Current Assignee Address: 300 Renaissance Center P.O. Box 300 Detroit, MI 48265-3000 US
- Agency: CICHOSZ, Vincent, A.
- Priority: US12/139,782 20080616
- Main IPC: F02D45/00
- IPC: F02D45/00 ; F02D35/00 ; F02D1/16 ; F02D41/40
Abstract:
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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