Ignition timing controller for multi-cylinder engine
Patent
·
OSTI ID:7193305
An ignition timing arrangement for a multi-cylinder internal combustion engine is described comprising: knock detecting means for detecting knocks generated in the individual cylinders of the engine; first discriminating means for comparing the frequency of knocking detected with a predetermined value, and generating a continuous knocking signal when the frequency of knocking is greater than the predetermined value, and generating a sporadic knocking signal when the frequency of knocking is less than the predetermined value; second discriminating means for discriminating which cylinder among the cylinders is knocking and generating a same cylinder signal when the same cylinder is determined to be knocking as successive engine cycles and generating a different cylinder signal when it is determined that different cylinders are knocking on successive engine cycles; ignition timing control means for delaying the ignition timings for all the cylinders in response to the different cylinder signal, and for delaying individually the ignition timing for only the knocking cylinder when that one cylinder is sporadically knocking or the same cylinder signal is generated indicating continuous knocking of that cylinder.
- Assignee:
- Nippondenso Co., Ltd., Kariya
- Patent Number(s):
- US 4760828
- OSTI ID:
- 7193305
- Country of Publication:
- United States
- Language:
- English
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