Patent ID: 9416704
Filing Date: 2016-08-16
CPC Classification: F01N

Claim Text:
1. An exhaust gas treatment device of an engine comprising a combustible gas generating catalyst ( 2 ) and an exhaust gas treatment portion ( 10 ), in which combustible gas ( 8 ) is produced by catalytic reaction which generates heat at the combustible gas generating catalyst ( 2 ), the combustible gas ( 8 ) is mixed with exhaust gas ( 9 ) which passes through an engine exhaust gas path ( 4 ), and the exhaust gas ( 9 ) heated by combustion of the combustible gas ( 8 ) is supplied to the exhaust gas treatment portion ( 10 ), wherein the combustible gas generating catalyst ( 2 ) comprises an aggregate of a plurality of catalyst portions ( 2 a ), each of the catalyst portions ( 2 a ) includes a matching surface ( 2 b ) with respect to adjacent one of the catalyst portions ( 2 a ), a fastening ring ( 11 ) is fitted over the combustible gas generating catalyst ( 2 ) in which the matching surfaces ( 2 b ) of the adjacent catalyst portions ( 2 a ) are abutted against each other, and the matching surfaces ( 2 b ) of the adjacent catalyst portions ( 2 a ) are brought into tight contact with each other by a fastening force of the fastening ring ( 11 ).