Invention Grant
US07878048B2 Fuel system injection timing diagnostics by analyzing cylinder pressure signal
有权
通过分析气缸压力信号进行燃油系统喷油定时诊断
- Patent Title: Fuel system injection timing diagnostics by analyzing cylinder pressure signal
- Patent Title (中): 通过分析气缸压力信号进行燃油系统喷油定时诊断
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Application No.: US12139735Application Date: 2008-06-16
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Publication No.: US07878048B2Publication Date: 2011-02-01
- Inventor: Yue-Yun Wang , Ibrahim Haskara , Chol-Bum M Kweon , Frederic Anton Matekunas , Paul Anthony Battiston
- Applicant: Yue-Yun Wang , Ibrahim Haskara , Chol-Bum M Kweon , Frederic Anton Matekunas , Paul Anthony Battiston
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: G01M15/06
- IPC: G01M15/06
Abstract:
A method for diagnosing combustion within an engine includes monitoring pressure cylinder pressure and generating a measured combustion phasing value for the cylinder at a predetermined metric selected to index the combustion cycle. The measured combustion phasing value is calculated through a Fast Fourier Transform and compared to an expected combustion phasing value.
Public/Granted literature
- US20090312931A1 FUEL SYSTEM INJECTION TIMING DIAGNOSTICS BY ANALYZING CYLINDER PRESSURE SIGNAL Public/Granted day:2009-12-17
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