Knock control system for internal combustion engine

Details Knock control system for internal combustion engine Knock control system for internal combustion engine

1993-10-08

1995-04-11

Nelli, Raymond A.

Internal-combustion engines

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

F02P 514

Patent

active

054048540

ABSTRACT:
A knocking vibration detecting unit (1) and a knock deciding unit (c) are integrated, and the communications of a knock intensity between the knock deciding unit (c) and an engine controlling microcomputer (7) are carried out in combination of a change from the previous value of a signal line level. In the engine controlling microcomputer (7), the ignition timing is controlled by a predetermined retard angle in case of combination of no change of the present read signal line level from the previous signal line level.
Thus, an internal combustion engine is prevented from any damage by relieving a failure without fail when a signal line (10) is troubled, while minimizing the influences of noises and reducing the space and size of an ECU.

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patent: 5205258 (1993-04-01), Hashimoto et al.
patent: 5241937 (1993-09-01), Kanehiro et al.

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