Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2005-04-26
2005-04-26
Wolfe, Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S104000, C701S111000, C701S114000, C073S116070, C073S118040, C073S117020, C073S117020, C123S480000, C123S364000, C123S357000, C123S406270, C123S406620
Reexamination Certificate
active
06885932
ABSTRACT:
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.
REFERENCES:
patent: 5278760 (1994-01-01), Ribbens et al.
patent: 5377537 (1995-01-01), James
patent: 5387253 (1995-02-01), Remboski, Jr. et al.
patent: 5503007 (1996-04-01), Plee et al.
patent: 5508927 (1996-04-01), Remboski, Jr. et al.
patent: 5515720 (1996-05-01), Remboski, Jr. et al.
patent: 5542291 (1996-08-01), James
patent: 5544521 (1996-08-01), McCombie
patent: 5559705 (1996-09-01), McClish et al.
patent: 5574217 (1996-11-01), McCombie
patent: 5602331 (1997-02-01), Prevost
patent: 5633456 (1997-05-01), Stander
patent: 5713339 (1998-02-01), Kishida et al.
patent: 5804711 (1998-09-01), Remboski et al.
patent: 5841025 (1998-11-01), Remboski et al.
patent: 5862506 (1999-01-01), Lynch et al.
patent: 5906652 (1999-05-01), Remboski et al.
patent: 6112149 (2000-08-01), Varady et al.
patent: 6388444 (2002-05-01), Hahn et al.
Plapp, G. et al. “Methods of On-Board Misfire Detection.” SAE Paper 900232, 1990.
Gilbert Richard J.
Kultgen Donald P.
Liu Louis Yizhang
Naber Jeffrey D.
Yang Hanlong
Hoang Johnny H.
Mancini Brian M.
Wolfe Willis R.
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