EXHAUST EMISSION PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE Russian patent published in 2016 - IPC F01N3/21 F01N11/00 

FIELD: engines and pumps.

SUBSTANCE: invention relates to devices for cleaning exhaust gases of internal combustion engine. Device includes a catalyst (7) of nitrogen oxides (NOx) located in exhaust manifold (3) of internal combustion engine (1) for recovery of nitrogen oxides by reducing agent supplied to it, device of (6) supply, which supplies urea to catalyst (7) of nitrogen oxides upstream of catalyst (7) of nitrogen oxides, filter (5) located in exhaust manifold upstream of the device of (6) supply to trap solid particles (SP) in exhaust gases. Downstream of catalyst (7) of nitrogen oxides is installed a sensor (17) SP, measuring the amount of solid particles in exhaust gases, and interlocking device, which blocks determination of filter (5) damage using the measured value of the sensor (17) SP, when the number of solid particles adhered to the catalyst (7) of nitrogen oxides is equal to or greater than the threshold value.

EFFECT: while using the invention reduction of accuracy of determining damage of filter (5) is prevented.

13 cl, 8 dwg