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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
May 9, 2014
filing date -
May 9, 2013
priority date (Note) -
Abandoned
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Abstract
A catalyst associated with an internal combustion engine can be heated to improve emissions performance of the engine. Hydrogen can be generated within the internal combustion engine by combusting a first combustion mixture having a first air-fuel ratio including excess fuel relative to a stoichiometric air-fuel ratio, such that a reforming reaction occurs during the combusting of the first combustion mixture. A second combustion mixture having a second air-fuel ratio including excess oxygen can be combusted within the internal combustion engine such that oxygen remains in second exhaust gases after the combusting of the second combustion mixture. The first exhaust gases and the second exhaust gases can be delivered to the catalyst and the catalyst is heated by reacting at least some of the hydrogen and at least some of the oxygen at the catalyst. Internal combustion engines, systems, vehicles engine management systems, and method are disclosed.
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