发明授权
- 专利标题： Misfire detection in an internal combustion engine
- 专利标题（中）： 内燃机失火检测
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申请号： US10637121申请日： 2003-08-08
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公开(公告)号： US06885932B2公开(公告)日： 2005-04-26
- 发明人: Louis Yizhang Liu , Richard J. Gilbert , Donald P. Kultgen , Jeffrey D. Naber , Hanlong Yang
- 申请人： Louis Yizhang Liu , Richard J. Gilbert , Donald P. Kultgen , Jeffrey D. Naber , Hanlong Yang
- 申请人地址： US IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： US IL Schaumburg
- 代理商 Brian M. Mancini
- 主分类号： G01M15/11
- IPC分类号： G01M15/11 ; G05D1/00 ; B60T7/12 ; G06F17/00
摘要：
A method and system for a misfire detection acquires (301) a series of acceleration data (302) representative of acceleration behavior of an engine. The data is sampled (304) to obtain acceleration data samples at a rate sufficient to obtain up to fourth-order perturbations of the data. The samples are filtered (322) to provide bandwidth limited samples, which are provided to at least two channels (325, 329). The samples are pattern matched (332) in a first channel to enhance harmonic phenomena and pattern canceled (330) in a second channel to enhance random phenomena. Hard and random misfires are detected (334) dependent on a magnitude of the filtered acceleration data samples. Preferably, a third channel (335) is added to detect multiple misfires.
公开/授权文献
- US20050033501A1 MISFIRE DETECTION IN AN INTERNAL COMBUSTION ENGINE 公开/授权日：2005-02-10
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