Enhanced ammonia feed control for selective catalytic reduction
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United States of America Patent
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Jul 13, 2004
Grant Date -
Jun 24, 2004
app pub date -
Dec 19, 2002
filing date -
Dec 19, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A selective catalytic reduction emissions control system of a compression ignition engine is provided with enhanced ammonia feed control for improved emissions control performance. The reduction agent is provided in two doses, and the reactor is provided with two reacting beds. The second dose of reactant is provided between the first and second reacting beds.
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