METHOD OF AND DEVICE FOR DETECTING TROUBLES BASING ON DIAGNOSING PROVIDED BY DETONATION COMBUSTION SENSOR Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: according to proposed method of detecting trouble basing on diagnosing provided by detonation combustion sensor duly related to cylinders of multiple cylinder internal combustion engine and output signal of which depends on level of recorded noise, troubles are detected with account of cylinder or cylinders creating noise of highest level or with due account of cylinder(s) noise from which is recorded by detonation combustion sensor as highest. Detonation combustion sensor is considered defective if some actual value depending on noise level exceeds at least one preset upper threshold value or comes out of the limits of at least one preset lower threshold value. In proposed trouble detecting device basing on diagnosing provided by detonation combustion sensor which is duly related to cylinders of multiple cylinder internal combustion engine and output signal of which depends on level of recorded noise, means are provided to determine maximum value which make it possible to transmit for subsequent processing only signals related to cylinder where noise level is highest or only the signals related to cylinder in which noise detected by detonation combustion sensor is highest.

EFFECT: reduced threshold value of engine shaft rotation frequency starting from which diagnosing of detonation combustion sensor can be done without affecting trouble detection process.

10 cl, 3 dwg