Ignition timing control device of internal combustion engine

Details Ignition timing control device of internal combustion engine Ignition timing control device of internal combustion engine

2007-10-16

2007-10-16

Huynh, Hai (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S406340

Reexamination Certificate

active

11452313

ABSTRACT:
An engine ECU executes a program including the steps of: comparing a vibration waveform of an engine and a knock waveform model stored in advance to calculate a correlation coefficient K; prohibiting correction when a correction prohibiting condition of a determination value V(KX) is satisfied, the determination value V(KX) compared with a knock magnitude N calculated from the correlation coefficient K so as to control the ignition timing; and correcting the determination value V(KX) based on a magnitude value LOG(V) calculated from a magnitude V of vibration in an ignition cycle in which the correlation coefficient K greater than a threshold value K(1) is calculated when the correction prohibiting condition of determination value V(KX) is not satisfied. The correlation coefficient K is calculated as a smaller value when the vibration waveform includes a waveform of vibration of a noise component as compared with that when the vibration waveform does not include it.

REFERENCES:
patent: 6561163 (2003-05-01), Takahashi et al.
patent: 6688286 (2004-02-01), Kokubo et al.
patent: 6748922 (2004-06-01), Uchida et al.
patent: 7007663 (2006-03-01), Mashiki
patent: 7043353 (2006-05-01), Takemura et al.
patent: 7054735 (2006-05-01), Masuda et al.
patent: 7181338 (2007-02-01), Takemura et al.
patent: 2006/0288982 (2006-12-01), Kaneko et al.
patent: 2007/0084266 (2007-04-01), Kaneko et al.
patent: 64-12070 (1989-01-01), None
patent: 2000-265933 (2000-09-01), None
patent: 2003-21032 (2003-01-01), None
patent: 2005-23902 (2005-01-01), None

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