发明授权
- 专利标题： Fuel system diagnostics by analyzing cylinder pressure signal
- 专利标题（中）： 通过分析气缸压力信号对燃油系统进行诊断
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申请号： US12102129申请日： 2008-04-14
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公开(公告)号： US07779679B2公开(公告)日： 2010-08-24
- 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： G01M15/08
- IPC分类号： G01M15/08
摘要：
A method for diagnosing combustion within a direct-injection, internal combustion engine including a plurality of combustion chambers and operative lean of stoichiometry includes monitoring combustion in the combustion chambers and estimating mass fraction burn therein. Mass fraction burn of sequential ones of the plurality of combustion chambers are compared and combustion phasing differences between sequential ones of the plurality of combustion chambers based on said mass fraction burn comparisons are identified.
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