Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction
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United States of America Patent
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Mar 26, 2002
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app pub date -
Mar 27, 1997
filing date -
Mar 27, 1997
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Abstract
A safe, reliable SCR system for reducing NO.sub.x emissions from an internal combustion engine hydrolyzes urea or like reagent under sufficient pressure to assure generation of ammonia, without production of solids that could foul injectors or catalysts. The heat for hydrolysis can be provided by the exhaust or an auxiliary means.
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