Knock control apparatus for internal combustion engine

Details Knock control apparatus for internal combustion engine Knock control apparatus for internal combustion engine

2007-11-26

2008-10-28

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

C073S035080

Reexamination Certificate

active

07444232

ABSTRACT:
A knock control apparatus for an internal combustion engine can avoid an incorrect knock determination thereby to prevent output power reduction and suppress knocks occurring in succession. A knock detection section outputs a knock detection signal based on an ionic current, and a threshold setting section sets a knock determination threshold. A knock determination section determines the occurrence of a knock based on the threshold and the knock detection signal. A required correction amount setting section sets a required correction amount for ignition timing based on a knock determination result, and a control parameter correction section corrects ignition timing based on the required correction amount. A noise determination section determines the occurrence of noise based on whether said knock detection signal or said control parameter correction amount is within a set level range, and a noise removal period setting section sets a noise removal period based on the noise determination result.

REFERENCES:
patent: 6439029 (2002-08-01), Asano et al.
patent: 6561163 (2003-05-01), Takahashi et al.
patent: 6748922 (2004-06-01), Uchida et al.
patent: 06-147079 (1994-05-01), None
patent: 10-009108 (1998-01-01), None

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