Exhaust treatment system
AssigneeCaterpillar Inc.
InventorPraveen Shivshankar Chavannavar
Life of this patent
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Abstract
An exhaust treatment system for a power system is disclosed. The exhaust treatment system includes an exhaust conduit directing exhaust gas produced by the power system towards at least one exhaust treatment device. The exhaust treatment system may also include a substrate positioned within an enclosure of the at least one exhaust treatment device. The exhaust conduit may be configured to preheat the substrate with the exhaust gas prior to directing the exhaust gas into the enclosure.
Claims20
An exhaust treatment system for a power system, comprising:
- an exhaust conduit directing exhaust gas produced by the power system towards at least one exhaust treatment device;
- and
- a substrate positioned within an enclosure of the at least one exhaust treatment device, wherein the exhaust conduit is configured to preheat the substrate with the exhaust gas prior to directing the exhaust gas into the enclosure.
A method of operating an exhaust treatment device of an engine, comprising:
- directing exhaust gas produced by the engine towards the exhaust treatment device, the exhaust treatment device including a substrate positioned within an enclosure;
- heating the substrate to a temperature higher than a temperature of the exhaust gas prior to directing the exhaust gas past the substrate;
- and
- directing the exhaust gas into the enclosure and past the substrate after the heating.
A method of reducing phosphorous aging of an exhaust treatment device of an engine, comprising:
- directing exhaust gas produced by the engine into an enclosure of the exhaust treatment device, the exhaust treatment device including a substrate positioned within the enclosure;
- transferring heat from the exhaust gas to the substrate prior to directing the exhaust gas into the enclosure;
- and
- directing the exhaust gas in the enclosure past the substrate.
Dependencies are inferred from the claim text.