초록 ▼

An apparatus for cleaning the exhaust gases of diesel engines, and especially for removal of soot particulates, utilizing series connected filter elements installed in the cross section of a housing traversed by the exhaust gas, wherein at least one filter element carrying a catalyst that lowers the

An apparatus for cleaning the exhaust gases of diesel engines, and especially for removal of soot particulates, utilizing series connected filter elements installed in the cross section of a housing traversed by the exhaust gas, wherein at least one filter element carrying a catalyst that lowers the ignition temperature of the soot and assists in soot burn off alternates several times with at least one filter element carrying a catalyst that assists the combustion of gaseous pollutants.

대표청구항 ▼

A method for cleaning diesel engine exhaust gases containing soot particles comprising passing said exhaust gases through a filter system installed in the cross section of the exhaust system traversed by the exhaust gases, said filter system including a series of filter elements for entrapping the s

A method for cleaning diesel engine exhaust gases containing soot particles comprising passing said exhaust gases through a filter system installed in the cross section of the exhaust system traversed by the exhaust gases, said filter system including a series of filter elements for entrapping the soot particles and wherein said series of filters includes at least one first filter element carrying a first catalyst material that lowers the ignition temperature of the soot and assists in burn off of the soot and a second filter element carrying a second catalyst material that assists in the combustion of gaseous pollutants contained in said gases, said first and second catalyst materials having separate and distinct compositions and said first catalyst material carried by said first filter element in the sole catalyst material carried by said first filter and said second catalyst material carried by said second filter element is the sole catalyst material carried by said second filter; arranging said at least one first and said at least one second filter element in a sequence which ensures that one filter carrying one of the two distinct catalyst compositions is between a pair of filters carrying the other of the two distinct catalyst compositions.