CATALYTIC NEUTRALISER OF ICE EXHAUST GASES Russian patent published in 2011 - IPC F01N3/28 

FIELD: engines and pumps.

SUBSTANCE: proposed neutraliser consists of case with inlet branch pipe accommodating gas swirler, and exhaust branch pipe with bottom and openings arranged in catalyst casing. Casing consists of top, central and bottom parts. Four hollow cylinders resting upon bottom horizontal web are coaxially arranged in central part at equal distance between them. Coaxial holes are made in webs at equal distance from each other along the circumference and in, at least, two lines. Note that the number of holes in outer line exceeds that in inner line by, at least, two times. Outer line is made between neutraliser casing central part and fourth hollow cylinder, while inner line is located between inner hollow cylinders. Top of hollow cylinders is covered by horizontal web. In web center, on diametre of smaller hollow cylinder, holes are made. Tope part represents a truncated cone with branch pipe secured smaller base of said cone. Cylindrical bottom part represents hollow truncated-cone connected with inlet branch pipe. Catalyst is arranged between first second, third and fourth hollow cylinders. Note here that outer catalyst porosity is 20% larger than that on inner catalyst.

EFFECT: higher efficiency.

3 dwg