Exhaust gas mixing system
AssigneeCaterpillar Inc.
InventorsYung T. Bui, Balamurugesh Thirunavukarasu, Subodh Chandra Biswas
Life of this patent
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Abstract
A system for mixing exhaust gas components is provided. The system may include an exhaust passage and a substantially enclosed distribution chamber disposed within the exhaust passage. The distribution chamber may include an outer wall defining a chamber volume and at least one opening disposed in the outer wall configured to provide fluid communication between the chamber volume and the exhaust passage. An additive supply device may be configured to supply at least one exhaust gas additive to the chamber volume.
Claims26
A method for mixing exhaust gas components, comprising:
- supplying exhaust gas to an exhaust passage;
- mixing the exhaust gas with at least one additive by supplying the at least one additive to a substantially enclosed distribution chamber disposed within the exhaust passage;
- and
- further mixing the exhaust gas by deflecting peripherally flowing exhaust gases using two or more sets of mixing vanes disposed downstream of the distribution chamber, wherein the vanes are disposed about a periphery of the exhaust passage and include a central opening, and wherein the vanes of each set of mixing vanes are approximately evenly spaced about the periphery of the exhaust passage, and a first set of mixing vanes is angularly-offset with respect to a second set of mixing vanes positioned downstream of the first set of mixing vanes.
A system for mixing exhaust gas components, comprising:
- an exhaust passage;
- a substantially enclosed distribution chamber disposed within the exhaust passage and including:
- an outer wall defining a chamber volume;
- at least one opening disposed in the outer wall configured to provide fluid communication between the chamber volume and the exhaust passage;
- an additive supply device configured to supply at least one exhaust gas additive to the chamber volume;
- and
- two or more sets of mixing vanes disposed downstream of the distribution chamber, wherein the vanes are disposed about a periphery of the exhaust passage and include a central opening, and wherein the vanes of each set of mixing vanes are approximately evenly spaced about the periphery of the exhaust passage, and a first set of mixing vanes is angularly offset with respect to a second set of mixing vanes positioned downstream of the first set of mixing vanes.
A machine, comprising:
- an engine;
- an exhaust passage configured to receive an exhaust gas stream produced by the engine;
- an exhaust gas mixing system, including:
- a substantially enclosed distribution chamber disposed within the exhaust passage and including:
- an outer wall defining a chamber volume;
- at least one opening disposed in the outer wall configured to provide fluid communication between the chamber volume and the exhaust passage;
- an additive supply device configured to supply at least one exhaust gas additive to the chamber volume;
- and
- two or more sets of mixing vanes disposed downstream of the distribution chamber, wherein the vanes are disposed about a periphery of the exhaust passage and include a central opening, and wherein the vanes of each set of mixing vanes are approximately evenly spaced about the periphery of the exhaust passage, and a first set of mixing vanes is angularly offset with respect to a second set of mixing vanes positioned downstream of the first set of mixing vanes.
Dependencies are inferred from the claim text.