Ignition timing control device of internal combustion engine

An ignition timing control device of an internal combustion engine, comprising:

• means for detecting intensity values in a plurality of ignition cycles, said intensity values relating to an intensity of vibration caused in said internal combustion engine in a predetermined first crank angle interval;
• means for detecting waveforms of vibration in said plurality of ignition cycles, said waveforms of vibration being caused in said internal combustion engine in a predetermined second crank angle interval;
• means for storing a model waveform of vibration of said internal combustion engine;
• calculation means for calculating a value relating to a deviation between said detected waveform and said stored model waveform based on a result of comparing said detected waveform with said stored model waveform;
• and
• control means for controlling ignition timing of said internal combustion engine based on an intensity value that is selected from said plurality of intensity values, that satisfies a predetermined first condition, and that is detected in an ignition cycle in which the value relating to the deviation between said detected waveform and said stored model waveform satisfies a predetermined second condition.

An ignition timing control device of an internal combustion engine, comprising:

• a knock magnitude calculator that calculates knock magnitude related to a magnitude of vibration due to knocking based on magnitude of vibration occurring in said internal combustion engine;
• a controller that controls ignition timing of said internal combustion engine based on a result of comparison between said knock magnitude and a predetermined determination value;
• a first detector that detects intensity values in a plurality of ignition cycles, said intensity values relating to an intensity of vibration caused in said internal combustion engine in a predetermined first crank angle interval;
• a second detector that detects waveforms of vibration in a plurality of ignition cycles, said waveforms of vibration being caused in said internal combustion engine in a predetermined second crank angle interval;
• a storage portion that stores a model waveform of vibration of said internal combustion engine;
• a calculator portion that calculates a value relating to a deviation between said detected waveform and said stored model waveform based on a result of comparing said detected waveform with said stored model waveform;
• and
• a corrector that corrects said determination value based on an intensity value selected from said plurality of intensity values, that satisfies a predetermined first condition, and that is detected in an ignition cycle in which the value relating to the deviation between the detected waveform and the stored model waveform satisfies a predetermined second condition.

An ignition timing control device of an internal combustion engine. comprising:

• means for calculating knock magnitude related to magnitude of vibration due to knocking based on a magnitude of vibration occurring in said internal combustion engine;
• means for controlling ignition timing of said internal combustion engine based on a result of comparison between said knock magnitude and a predetermined determination value;
• means for detecting intensity values in a plurality of ignition cycles, said intensity values relating to an intensity of vibration caused in said internal combustion engine in a predetermined first crank angle interval;
• means for detecting waveforms of vibration in said plurality of ignition cycles, said waveforms of vibration being caused in said internal combustion engine in a predetermined second crank angle interval;
• means for storing a model waveform of vibration of said internal combustion engine;
• means for calculating a value relating to a deviation between said detected waveform and said stored model waveform based on a result of comparing said detected waveform with said stored model waveform;
• and
• correcting means for correcting said determination value based on an intensity value that is selected from said plurality of intensity values, that satisfies a predetermined first condition, and that is detected in an ignition cycle in which the value relating to the deviation between said detected waveform and said stored model waveform satisfies a predetermined second condition.