METHOD AND DEVICE FOR DETECTING DETONATION IN INTERNAL COMBUSTION ENGINES Russian patent published in 2012 - IPC G01L23/00 G01L23/22 G01P5/00 F02P5/152 F02D41/00 F02D45/00 

FIELD: transport.

SUBSTANCE: electronic control unit (ECU) of the engine executes a program with the following stages: detecting the value of the engine vibration (stage S102); detecting the wave shape of the engine vibration based on the said value (stage S104); calculating the quotient K of correlation if the engine rotational frequency NE is less than the threshold value NE (1), using the sum of the values where each value is calculated by substracting the positive reference value from the value taken in the shock shape model , the sum is used as the area S of the shock shape model; and calculating the quotient K of correlation if the engine rotational frequency NE is not less than the threshold value NE (1), using the whole area S of the shock shape model (stage S114); and determining whether the detonation occurred or not, using the quotient K of correlation (stages S120, S124). The quotient K of correlation is calculated by dividing the sum of remainders by the area S, where each remainder is a remainder between the value on the vibration wave shape and the value on the shock shape model.

EFFECT: creation of method and device for detecting the detonation which is capable of detecting precisely whether the detonation occurred or not.

24 cl, 28 dwg