Method of detecting a knock in an internal combustion engine by means of ionic current
AssigneesDaihatsu Motor Co., Ltd., Diamond Electric Mfg. Co., Ltd.
InventorsMorito Asano, Atsushi Ito, Teruji Ichihara, Yoshiyuki Fukumura
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Abstract
There is provided an improved method of detecting an occurrence of a knock in an internal combustion engine by detecting an ionic current flowing in a cylinder of the engine from initiation of combustion therein and judging a knock component overlapping the ionic current based on a judging level, the method including the steps of: detecting a peak value of the ionic current; and relatively correcting at least one of the judging level and the knock component based on the peak value thus detected so as to make more difficult a judgment of whether the knock occurs or not as the detected peak value increases.
Claims10
A method of detecting an occurrence of a knock in an internal combustion engine by detecting an ionic current flowing in a cylinder of the engine from initiation of combustion therein and judging a knock component overlapping the ionic current based on a judging level, the method comprising the steps of:
- detecting a peak value of the ionic current;
- and
- relatively correcting at least one of the judging level and the knock component based on the peak value thus detected so as to make more difficult a judgment of whether the knock occurs or not as the detected peak value increases.
Dependencies are inferred from the claim text.