Ignition timing control for internal combustion engine

Details Ignition timing control for internal combustion engine Ignition timing control for internal combustion engine

2006-04-04

2006-04-04

Huynh, Hai (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S406370, C701S111000

Reexamination Certificate

active

07021286

ABSTRACT:
An internal combustion engine (1) causes an air/fuel mixture in a cylinder to combust due to ignition by a spark plug (14). An engine controller (50) calculates an ignition delay of the gas in the cylinder on the basis of an operational state of the engine (1)(53), and it calculates a knock generation index which is an indicator of the occurrence of knock on the basis of the ignition delay (53). The controller (50) calculates a limit ignition timing at which knock is not generated, on the basis of the knock generation index (54), and by controlling the ignition timing of the spark plug (14) to the limit ignition timing (55), appropriate control of the ignition timing is achieved by means of a small number of adaptation steps.

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