EXHAUST GAS PURIFIER AND METHOD TO PURIFY INTERNAL COMBUSTION ENGINE EXHAUST GASES Russian patent published in 2010 - IPC F01N3/20 

FIELD: engines and pumps.

SUBSTANCE: proposed ICE exhaust gas purifier is designed as SO_x catalyst-trap to entrap sulphur oxides of exhaust gases in the engine exhaust pipe. One of alkaline and alkali-earth metals is diffused into catalyst-trap. In engine operation, keeping the SO_x catalyst-trap temperature, whereat nitrate of at least one of alkaline and alkali-earth metals changes into molten state, stimulates nitrate displacement and its coagulation effect. Note here that nitrate in SO_x catalyst-trap displaces and coagulates on SO_x catalyst-trap surface to remove SO_x, and, at the same time, to recover the degree of SO_x entrapping.

EFFECT: higher degree of SO_x entrapping.

24 cl, 23 dwg