Muffler with catalytic converter arrangement; and method
AssigneeDonaldson Company, Inc.
InventorsWayne M. Wagner, Marty A. Barris, Douglas E. Flemming, James C. Rothman, Peter A. Betts
Life of this patent
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Abstract
An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.
Claims22
An apparatus for modifying an exhaust stream of a diesel engine, said apparatus comprising:
- (a) a muffler arrangement having an exhaust inlet, an exhaust outlet and means for sound attenuation;
- (b) a catalytic converter arrangement positioned within said muffler arrangement between said exhaust inlet and exhaust outlet;
- (i) said catalytic converter arrangement including a porous core member having an upstream face;
- (c) means for directing flow of exhaust gases through said catalytic converter arrangement whenever exhaust gases operably flow through said muffler arrangement from said exhaust inlet to said exhaust outlet;
- (d) a flow distribution arrangement constructed and arranged to direct exhaust flow substantially evenly against said porous core member upstream face;
- (i) said porous core member being positioned within a distance of about 2 to 4 inches from said flow distribution arrangement.
An apparatus for modifying an exhaust stream of a diesel engine, said apparatus comprising:
- (a) a muffler arrangement including an outer shell and having an exhaust inlet and an exhaust outlet;
- (b) a catalytic converter arrangement positioned within said muffler arrangement;
- said catalytic converter arrangement comprising a converter core having an upstream surface;
- (c) means for directing flow of exhaust gases through said catalytic converter core whenever exhaust gases operably flow through said muffler arrangement from said exhaust inlet to said exhaust outlet;
- and,
- (d) a flow distribution arrangement constructed and arranged to direct exhaust flow substantially evenly against said converter core upstream face;
- (i) said converter core being positioned within a distance of about 2 to 4 inches from said flow distribution arrangement.
An apparatus for modifying an exhaust stream of a diesel engine;
- said apparatus comprising:
- (a) a muffler arrangement comprising an outer shell and an inlet;
- (b) a catalytic converter arrangement positioned within said muffler arrangement;
- said catalytic converter arrangement comprising a converter core having an upstream surface oriented directed toward and facing said muffler inlet;
- (c) means for selectively directing flow of exhaust gases from said inlet toward said catalytic converter core upstream surface;
- and,
- (d) a flow distribution arrangement constructed and arranged to direct exhaust gas flow substantially evenly against said converter core upstream surface;
- (i) said converter core being positioned no greater than about 4 inches from said flow distribution arrangement.
An apparatus for modifying an exhaust stream of a diesel engine;
- said apparatus comprising:
- (a) a muffler arrangement comprising an outer shell and an inlet;
- (b) a catalytic converter arrangement positioned within said muffler arrangement;
- said catalytic converter arrangement comprising a converter core having an upstream surface oriented directed toward and facing said muffler inlet;
- (c) means for selectively directing flow of exhaust gases from said inlet toward said catalytic converter core upstream surface;
- and,
- (d) a flow distribution arrangement constructed and arranged to direct exhaust gas flow substantially evenly against said converter core upstream surface;
- (i) said converter core being positioned no closer than a distance of about 2 inches to said flow distribution arrangement.
Dependencies are inferred from the claim text.