Ammonia storage on an SCR catalyst
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United States of America Patent
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Jan 20, 2015
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app pub date -
Nov 4, 2013
filing date -
Nov 5, 2012
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Abstract
A system and method for calculating quantity of ammonia stored on an SCR catalyst at various times during an interval of time by processing certain data, including the aggregate quantity of ammonia introduced into an exhaust flow during the interval of time, calculating the efficiency of catalytic conversion of NOx to N2 and H2O by ammonia at each of the various times by processing certain data, including NOx measurements obtained from upstream and downstream NOx sensors, and establishing a correlation between efficiency of catalytic conversion of NOx to N2 and H2O by ammonia and quantity of ammonia stored on the SCR catalyst over the interval of time which comprises calculated efficiency of catalytic conversion of NOx and calculated quantity of ammonia stored on the SCR catalyst at each of the various times.
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- 15 United States
- 10 France
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- 7 China
- 5 Korea
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Patent Owner(s)
- INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Charintranond, Paul Boon | Elmhurst, US | 7 | 9 |
Lack, Adam C | New York, US | 26 | 145 |
Miller, Michael James | Mt. Prospect, US | 21 | 82 |
Singh, Navtej | Arlington Heights, US | 35 | 471 |
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