Patent ID: 8153089

Claim:
A process of removing substances entrained in an exhaust gas from a nonroad engine having an exhaust outlet to discharge said exhaust gas, comprising the steps of: (a) intaking said exhaust gas from said nonroad engine into a filter cavity containing a filter core therein, wherein said filter core has an intake, a discharging outlet and a plurality of air passages for allowing said exhaust gas inletting from said intake to flow therethrough, wherein said filter core has a plurality of air pores distributed thereon to form said air passages; (b) diffusing said exhaust gas to said filter cavity through said air passages while passing said exhaust gas through said filter core wherein said exhaust gas is diffused to said filter cavity to pass through said air passages so as to enhance a chemical reaction of said catalyzing element with said exhaust gas, wherein said exhaust gas is guided to flow through said air pores of said filter core in said filter cavity and evenly diffusing said exhaust gas to said filter cavity through said air pores; (c) removing predetermined substances in said exhaust gas by chemically reacting said exhaust gas with a catalyzing element provided on said filter core to form a filtered exhaust gas, wherein said catalyzing element is provide around said air pores of said filter core; (d) discharging said filtered exhaust gas from said filter cavity through said discharging outlet; and (e) resisting heat distributing from said filter cavity throughout said process.