Control apparatus for internal combustion engine

Details Control apparatus for internal combustion engine Control apparatus for internal combustion engine

2009-07-01

2010-12-14

Huynh, Hai H (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S406380, C123S406340, C123S480000, C123S435000

Reexamination Certificate

active

07853400

ABSTRACT:
A knock control apparatus includes: a knock sensor for detecting knock of an internal combustion engine; a signal processing section for calculating a knock intensity; and knock determination level setting sections: for calculating an average value of the knock intensity; for calculating, based on the average value, an overall variance of the knock intensity of an entirety of a frequency distribution, a higher variance of the knock intensity above the average value, and a lower variance of the knock intensity below the average value; for calculating a standard deviation of the knock intensity from the overall variance; for presetting a value allowing the frequency distribution of the knock intensity to be a predetermined confidence interval as a confidence coefficient; and for setting a sum of the average value and a value obtained by multiplying the standard deviation by the corrected confidence coefficient as a knock determination level.

REFERENCES:
patent: 7424820 (2008-09-01), Iwade et al.
patent: 7478624 (2009-01-01), Kaneko et al.
patent: 7643932 (2010-01-01), Iwade et al.
patent: 7681552 (2010-03-01), Kaneko et al.
patent: 60-243369 (1985-12-01), None
patent: 08-004580 (1996-01-01), None
patent: 2005-188297 (2005-07-01), None
patent: 2006-169996 (2006-06-01), None
patent: 2007-009725 (2007-01-01), None
patent: 2007-092620 (2007-04-01), None
patent: 2007-255195 (2007-10-01), None
patent: 2009-250212 (2009-10-01), None

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