Abnormal combustion detection apparatus and method for internal

Details Abnormal combustion detection apparatus and method for internal Abnormal combustion detection apparatus and method for internal

1999-02-23

2000-08-22

Argenbright, Tony M.

Internal-combustion engines

Spark ignition timing control

Electronic control

73 3506, 73116, 12340645, F02P 5152, G01L 2322

Patent

active

061055522

ABSTRACT:
An abnormal combustion detection apparatus for an internal combustion engine quickly detects the occurrence of preignition by using a knock sensor. When the knock sensor detects an engine knocking, the ignition timing is delayed. If despite the delay of ignition timing, the knocking is not decreased and the air-fuel ratio detected after the delay of ignition timing is less than the air-fuel ratio detected before the delay of ignition timing, it is determined that preignition has occurred.

REFERENCES:
patent: 4265205 (1981-05-01), Garcea
patent: 6020742 (2000-02-01), Kano et al.

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