Measuring and testing – Internal combustion engine or related engine system or... – Relative rotational position
Reexamination Certificate
2011-02-01
2011-02-01
Kirkland, III, Freddie (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Relative rotational position
Reexamination Certificate
active
07878048
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.
REFERENCES:
patent: 5400648 (1995-03-01), Mahr
patent: 6188952 (2001-02-01), Serra et al.
patent: 6246952 (2001-06-01), Honda
patent: 7133761 (2006-11-01), Ancimer
patent: 7254475 (2007-08-01), Grai et al.
patent: 7398150 (2008-07-01), Shinozaki et al.
patent: 7467040 (2008-12-01), Ker et al.
patent: 7467041 (2008-12-01), Okubo et al.
patent: 7647155 (2010-01-01), Shinozaki et al.
patent: 7657359 (2010-02-01), Shinozaki et al.
patent: 2002/0121267 (2002-09-01), Denz
patent: 2003/0145829 (2003-08-01), Scholl et al.
patent: 2005/0039721 (2005-02-01), Truscott et al.
patent: 2008/0051975 (2008-02-01), Ker et al.
patent: 2009/0132144 (2009-05-01), Shinozaki et al.
patent: 2009/0259383 (2009-10-01), Wang et al.
patent: 2009/0312932 (2009-12-01), Wang et al.
patent: 2009/0312941 (2009-12-01), Wang et al.
patent: WO-2004048761 (2004-06-01), None
patent: WO-2005001263 (2005-01-01), None
Battiston Paul Anthony
Haskara Ibrahim
Kweon Chol-Bum M
Matekunas Frederic Anton
Wang Yue-Yun
GM Global Technology Operations LLC
Kirkland, III Freddie
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