METHOD AND APPARATUS FOR GASEOUS MIXING IN A DIESEL EXHAUST SYSTEM
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United States of America Patent
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Issued Date -
Sep 15, 2011
app pub date -
Mar 12, 2010
filing date -
Mar 12, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A mixing device and method for a diesel exhaust system is disclosed having a chamber, a mixer within the chamber, and an injection tube supported on the mixer within the chamber. The mixer is positioned within the chamber adjacent an inlet and includes a plurality of angled blades to effect turbulent flow in a diesel exhaust stream entering the chamber through the inlet. The injection tube includes a plurality of injection points (e.g., openings) for discharging a reagent, such as gaseous ammonia (NH.sub.3), into the exhaust stream. The injection tube is curved, and more specifically it is coiled with the injection points spread along the length of the tube in order to deliver reagent across a section of the chamber perpendicular to the exhaust stream flow.
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