DEVICE TO DEFINE ICE COMBUSTION MISS AND METHOD TO THIS END Russian patent published in 2009 - IPC F02D45/00 G01M15/11 

FIELD: engines and pumps.

SUBSTANCE: proposed invention relates to devices designed to define the ICE combustion misses and appropriate methods to this end. This invention proposes the device allowing determining the combustion misses. It determines if the difference Nxd360 of rotation fluctuation exceeds, as the difference between rotation fluctuation Nxd at a certain angle CA of the engine crank turn angle and rotation fluctuation Nxd at CA crank turn angle preceding by 360 degrees the preset reference value A1 (stage S150), and if the rotation fluctuation difference Nxd720 and the difference between the rotation fluctuation Nxd at a certain crank turn angle, exceeds the preset reference value B1 (stage S160). The proposed device allows determining the combustion misses provided all the requirements specified in relations Nja2, Nja3 and Nja4 of rotation fluctuation differences proceeding from the rotation fluctuation difference Nxd360 (stage S200) are met as well as those specified in Njb2, Njb3 and Njb4 proceeding from the rotation fluctuation difference Nxd720 (stage S210), when both differences Nxd360 and Nxd720 exceed reference values A1 and B1 (stages S150 and S160).

EFFECT: higher adequacy and accuracy of determination of combustion misses during warming up of catalyst incorporated with exhaust gas control unit with notable ignition delay.

16 cl, 7 dwg