Compact side inlet and outlet exhaust aftertreatment system
AssigneeCummins Emission Solutions Inc.
InventorsRandolph G. Zoran, David M. Sarcona, Ryan M. Johnson, Enoch Nanduru
Life of this patent
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Abstract
An exhaust aftertreatment assembly and method of manufacturing and operating an exhaust aftertreatment assembly. An exhaust aftertreatment assembly includes an aftertreatment housing and an inlet conduit coupled to the aftertreatment housing at an inlet port so as to transfer exhaust gas into the aftertreatment housing. An inlet chamber is positioned in the aftertreatment housing. The inlet chamber is fluidly coupled to the inlet port of the aftertreatment housing to receive the exhaust gas from the inlet conduit.
Claims28
An exhaust aftertreatment assembly, comprising:
- an aftertreatment housing including an inlet port and an outlet port, the aftertreatment housing configured to house a plurality of exhaust aftertreatment components;
- an inlet chamber coupled to the aftertreatment housing, the inlet chamber fluidly coupled to the inlet port of the aftertreatment housing so as to receive and redirect an exhaust gas flow from the inlet port;
- a diesel oxidation catalyst positioned in the aftertreatment housing, the diesel oxidation catalyst fluidly coupled to the inlet chamber, the diesel oxidation catalyst having a smaller cross sectional area than the inlet chamber about a longitudinal flow axis of the aftertreatment housing;
- a particulate filter positioned in the aftertreatment housing, the particulate filter fluidly coupled to the diesel oxidation catalyst;
- a reductant injection chamber positioned in the aftertreatment housing, the reductant injection chamber fluidly coupled to the diesel oxidation catalyst, the reductant injection chamber including a reductant port configured to receive a reductant injector;
- and
- a selective catalytic reduction component positioned in the aftertreatment housing, the selective catalytic reduction component fluidly coupled to the reductant injection chamber, the selective catalytic reduction component fluidly coupled to the outlet port in the aftertreatment housing.
An aftertreatment system, comprising:
- an aftertreatment housing including an inlet port and an outlet port, the aftertreatment housing defining a longitudinal flow axis, the inlet port and the outlet port oriented orthogonal to the longitudinal flow axis of the aftertreatment housing;
- an inlet chamber coupled to the aftertreatment housing, the inlet chamber fluidly coupled to the inlet port of the aftertreatment housing so as to receive and redirect an exhaust gas flow from the inlet port towards the aftertreatment housing along the longitudinal flow axis thereof;
- an outlet chamber coupled to the aftertreatment housing, the outlet chamber fluidly coupled to the outlet port of the aftertreatment housing so as to receive and redirect the exhaust gas flow from the aftertreatment housing in a direction orthogonal to the longitudinal flow axis of the aftertreatment housing towards the outlet port;
- a reductant injection chamber positioned in the aftertreatment housing the reductant injection chamber including a reductant port configured to receive a reductant injector;
- and
- a selective catalytic reduction component positioned in the aftertreatment housing downstream of the reductant injection chamber and fluidly coupled thereto, the selective catalytic reduction component fluidly coupled to the outlet port of the aftertreatment housing.
An aftertreatment housing assembly for housing a plurality of aftertreatment components comprising at least a selective catalytic reduction component, a diesel oxidation catalyst, and a particulate filter, the aftertreatment housing assembly comprising:
- an aftertreatment housing including an inlet port and an outlet port, the aftertreatment housing defining a longitudinal flow axis, the inlet port and the outlet port oriented orthogonal to the longitudinal flow axis of the aftertreatment housing;
- an inlet chamber coupled to the aftertreatment housing, the inlet chamber fluidly coupled to the inlet port of the aftertreatment housing so as to receive and redirect an exhaust gas flow from the inlet port towards the aftertreatment housing along the longitudinal flow axis of the aftertreatment housing;
- an outlet chamber coupled to the aftertreatment housing, the outlet chamber fluidly coupled to the outlet port of the aftertreatment housing so as to receive and redirect the exhaust gas flow from the aftertreatment housing in a direction orthogonal to the longitudinal flow axis thereof towards the outlet port;
- a reductant injection chamber positioned in the aftertreatment housing, the reductant injection chamber including a reductant port configured to receive a reductant injector;
- and
- a plurality of flow redirection fins positioned in the inlet chamber, the plurality of flow redirection fins structured to redirect the exhaust gas flow entering the inlet chamber via the inlet port in a substantially orthogonal direction towards the longitudinal flow axis of the aftertreatment housing,
- wherein the diesel oxidation catalyst and the particulate filter are positionable downstream of the inlet chamber and upstream of the reductant injection chamber, and the selective catalytic reduction component is positionable downstream of the reductant injection chamber and upstream of the outlet chamber.
A method of servicing an aftertreatment system mounted on a vehicle, the aftertreatment system comprising an aftertreatment housing having a longitudinal flow axis, an inlet port and an inlet chamber positioned orthogonally to the longitudinal flow axis, and an outlet port and an outlet chamber also positioned orthogonally to the longitudinal flow axis, the method comprising:
- shutting off the vehicle;
- removing at least one used aftertreatment component from an internal volume defined by the aftertreatment housing without removing the aftertreatment system from the vehicle;
- and
- positioning a serviced or new aftertreatment component within the internal volume of the aftertreatment housing.
Dependencies are inferred from the claim text.