CLOSE-COUPLED SCR SYSTEM
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Oct 11, 2024
filing date -
Oct 11, 2024
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Abstract
A system for treating exhaust gases from a combustion engine and a method for using the same results in improved NOx conversion during engine startup. The system includes a compact SCR flow-through monolith installed upstream of a close-coupled SCR wall-flow filter, wherein the compact SCR flow-through monolith may be extruded or made of a thin-walled substrate, such that the SCR flow-through monolith has a smaller volume with lower heat capacity and higher catalyst loading relative to the SCR wall-flow filter.
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