Particulate filter system
First Claim
1. A particular filter system having a particulate filter (7) and burner (3) in the main stream of an exhaust-gas line (10) of a diesel engine (1), said burner (3) including a primary combustion chamber (6) with an outlet opening (8), a cylindrical secondary combustion chamber (9) aligned with said outlet opening (8), an air swirl atomizing nozzle (5) in said primary combustion chamber (6) creating a swirling flow of burning gases in said primary combustion chamber (6) which discharge through said outlet opening (8) into said secondary combustion chamber (9), said exhaust gas line (10) having two branches connected tangentially to the upstream part of said cylindrical secondary combustion chamber (9) at diametrically opposite sides thereof whereby exhaust gases discharged by said branches into said secondary combustion chamber (9) flow in a swirl having a direction opposite to the direction of swirling flow in said primary combustion chamber (6).
1 Assignment
0 Petitions
Accused Products
Abstract
Method and apparatus for regenerating a particulate filter of a diesel engine. Disclosed is a particulate filter that, at all operating points of the diesel engine, can be regenerated by means of a burner working in the main engine exhaust stream. Regeneration is achieved by means of a burner (3) to which fuel and oxygen-containing gas is supplied in a variable proportion. By this means, the burner can produce the output required to achieve the regeneration temperature at any operating point of the diesel engine. The apparatus is suitable for diesel engines having thermally regenerable particulate filters.
75 Citations
11 Claims
- 1. A particular filter system having a particulate filter (7) and burner (3) in the main stream of an exhaust-gas line (10) of a diesel engine (1), said burner (3) including a primary combustion chamber (6) with an outlet opening (8), a cylindrical secondary combustion chamber (9) aligned with said outlet opening (8), an air swirl atomizing nozzle (5) in said primary combustion chamber (6) creating a swirling flow of burning gases in said primary combustion chamber (6) which discharge through said outlet opening (8) into said secondary combustion chamber (9), said exhaust gas line (10) having two branches connected tangentially to the upstream part of said cylindrical secondary combustion chamber (9) at diametrically opposite sides thereof whereby exhaust gases discharged by said branches into said secondary combustion chamber (9) flow in a swirl having a direction opposite to the direction of swirling flow in said primary combustion chamber (6).
Specification