Knock suppression apparatus and method for a multi-cylinder inte

Details Knock suppression apparatus and method for a multi-cylinder inte Knock suppression apparatus and method for a multi-cylinder inte

1990-10-26

1991-08-13

Nelli, Raymond A.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

F02P 514

Patent

active

050387359

ABSTRACT:
An improved knock suppression apparatus and method for an internal combustion engine is able to determine whether knocking is taking place in each of the engine cylinders through a microcomputer, reduce the load on the hardware components employed and simplify the arrangement thereof to a substantial extent. To this end, it is determined whether knocking is taking place in each cylinder. It is further determined whether such knock determination is incorrect due to noise. If the knock determination is correct, then the knocking cylinder alone is subject to knock control such as ignition timing retarding control so as to suppress the knocking. On the other hand, if incorrect, the knock control on the cylinder is suppressed.

REFERENCES:
patent: 4766545 (1988-06-01), Nagai
patent: 4884206 (1989-11-01), Mate
patent: 4892074 (1990-01-01), Iriyama
patent: 4969441 (1990-11-01), Komurasaki et al.
patent: 4971010 (1990-11-01), Iwata
patent: 4991553 (1991-02-01), Kuribara et al.
patent: 4993387 (1991-02-01), Sakakibara et al.
patent: 4993388 (1991-02-01), Mitsumoto

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