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US 2004/0171475 A1Published application
Method for regenerating the oxidation catalyzer of the exhaust gases of an internal combustion engine
OwnerJacob Klimstra, Kristoffer Sandelin +1inventors
InventorsJacob Klimstra, Kristoffer Sandelin, Jan Torrkulla
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Abstract
In operation of an internal combustion engine, exhaust gases of the internal combustion engine are directed through an oxidation catalyzer and thereby heat the catalyzer. Subsequently the engine is stopped, and the catalyzer is regenerated by supplying reducing gas to the catalyzer while the catalyzer is still sufficiently hot for regeneration to occur.
Claims4
A method of operating an internal combustion engine having an oxidation catalyzer, comprising:
- operating the engine and directing exhaust gases of the internal combustion engine through the oxidation catalyzer and thereby heating the catalyzer, and
- subsequently stopping the engine and regenerating the catalyzer by supplying reducing gas to the catalyzer while the catalyzer is still sufficiently hot for regeneration to occur.
Dependencies are inferred from the claim text.