Knock detection apparatus for internal combustion engine

Details Knock detection apparatus for internal combustion engine Knock detection apparatus for internal combustion engine

2007-11-26

2010-12-21

Vo, Hieu T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S406370, C073S035080

Reexamination Certificate

active

07856308

ABSTRACT:
A knock detection apparatus for an internal combustion engine can accurately detect the occurrence of a knock without an influence of a noise component even if the noise component having the same frequency as a knock vibration superposes on an ionic current signal. The apparatus includes an ionic current detection section, a knock signal detection section for detecting a knock signal based on an ionic current, a crank angle sensor for detecting a crank angle corresponding to a rotational position of the engine, a window setting section for setting a noise detection window, a noise component detection section for detecting a noise component in the window, and a knock determination section for determining the occurrence of a knock based on a relation between the noise component and the knock signal. The window setting section sets the window after a predetermined crank angle corresponding to an end of a combustion stroke of the engine.

REFERENCES:
patent: 5979406 (1999-11-01), Aoki et al.
patent: 6000276 (1999-12-01), Mogi et al.
patent: 6789409 (2004-09-01), Tanaya
patent: 60213859 (1985-10-01), None
patent: 3-19448 (1991-02-01), None
patent: 442244 (1992-04-01), None
patent: 3264854 (1998-09-01), None
patent: 2000145605 (2000-05-01), None
patent: 2001-234804 (2001-08-01), None
patent: 2003-278593 (2003-10-01), None
Japanese Office Action dated Dec. 12, 2008.

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