Knock control apparatus and knock control method for...

Internal-combustion engines – Spark ignition timing control – Electronic control

Reexamination Certificate

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C073S035030, C701S111000

Reexamination Certificate

active

06877482

ABSTRACT:
The invention provides such a knock control apparatus or method for an internal combustion engine as is capable of suitably avoiding an erroneous determination on the occurrence of knocking and controlling knocking. This control apparatus comprises a knock determiner, a controller, and a setter. If an intensity of engine oscillation detected during a predetermined knock determination period is equal to or higher than a predetermined knock determination level, the knock determiner determines that knocking has occurred. The controller controls an ignition timing on the basis of a result of the determination. The setter sets an end timing of the knock determination period at an advanced timing on the basis of the ignition timing retardation amount in the retardation control.

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patent: 5230316 (1993-07-01), Ichihara et al.
patent: 6701894 (2004-03-01), Katagami
patent: 6779517 (2004-08-01), Sakakura
patent: 20020195085 (2002-12-01), Katagami
patent: 29 18 410 (1980-11-01), None
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patent: 0 454 486 (1991-10-01), None
patent: 61-18838 (1986-01-01), None
patent: 6-280728 (1994-10-01), None
patent: 11-229951 (1999-08-01), None
patent: WO 9931384 (1999-06-01), None

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