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US 12,305,555 B2Granted
Exhaust gas aftertreatment system
AssigneeCummins Emission Solutions Inc.
InventorRyan M. Johnson
Life of this patent
Estimating the term…
Abstract
An exhaust gas aftertreatment system includes: a first decomposition chamber; a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber; a first conversion catalyst member; a second decomposition chamber; a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber; a second conversion catalyst member; and a third conversion catalyst member.
Claims17
An exhaust gas aftertreatment system comprising:
- a first decomposition chamber;
- a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber;
- a first conversion catalyst member;
- a second decomposition chamber;
- a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber;
- a second conversion catalyst member;
- and
- a third conversion catalyst member;
- wherein the exhaust gas aftertreatment system is configured such that, during operation:
- the exhaust gas flows in a first direction through the first decomposition chamber, subsequently, exhaust gas passes to the first conversion catalyst member,
- subsequently, the exhaust gas flows through the first conversion catalyst member in a second direction opposite the first direction,
- subsequently, the exhaust gas passes to the second decomposition chamber,
- subsequently, the exhaust gas flows through the second decomposition chamber in the first direction,
- subsequently, a first portion of the exhaust gas passes to the second conversion catalyst member, and a second portion of the exhaust gas passes to the third conversion catalyst member, and
- subsequently, the first portion of the exhaust gas flows through the second conversion catalyst member in the second direction, and the second portion of the exhaust gas flows through the third conversion catalyst member in the second direction.
12 more elements
An exhaust gas aftertreatment system comprising:
- a first decomposition chamber configured to receive exhaust gas;
- a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber;
- a first conversion catalyst member configured to receive a mixture of the first treatment fluid and the exhaust gas, from the first decomposition chamber;
- a second decomposition chamber configured to receive the exhaust gas from the first conversion catalyst member;
- a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber;
- a second conversion catalyst member configured to receive a first portion of a mixture of the second treatment fluid and the exhaust gas, from the second decomposition chamber;
- and
- a third conversion catalyst member configured to receive a second portion of the mixture of the second treatment fluid and the exhaust gas, from the second decomposition chamber;
- wherein the first decomposition chamber is aligned with the second conversion catalyst member;
- and
- wherein the first conversion catalyst member is aligned with the third conversion catalyst member.
8 more elements
An exhaust gas aftertreatment system comprising:
- a first decomposition chamber configured to receive exhaust gas and centered on a first decomposition axis;
- a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber along a first dosing axis;
- a first conversion catalyst member configured to receive a mixture of the first treatment fluid and the exhaust gas, from the first decomposition chamber;
- a second decomposition chamber configured to receive the exhaust gas from the first conversion catalyst member and centered on a second decomposition axis;
- a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber along a second dosing axis;
- a second conversion catalyst member configured to receive a first portion of a mixture of the second treatment fluid and the exhaust gas, from the second decomposition chamber;
- a third conversion catalyst member configured to receive a second portion of the mixture of the second treatment fluid and the exhaust gas, from the second decomposition chamber;
- and
- an inlet exhaust gas conduit configured to receive exhaust, the inlet exhaust gas conduit centered on an inlet conduit axis;
- wherein the first dosing axis is transverse to the first decomposition axis;
- wherein the second dosing axis is parallel to the second decomposition axis.
8 more elements
Dependencies are inferred from the claim text.