Injection device for reagent
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United States of America Patent
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Apr 12, 2016
Grant Date -
Oct 17, 2013
app pub date -
Jan 11, 2012
filing date -
Jan 13, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An injection device for administering a reagent into an exhaust passage of an internal combustion engine, the injection device having an axis along its length and comprising an outwardly opening valve member having a seating surface which is engageable with a valve seating region. A seating member provided with an internal bore which defines the valve seating region, wherein the internal bore further defines a flow re-directing region downstream of the valve seating region. The seating member has an end face provided with a feature which intersects with at least a portion of the flow re-directing region to define, together with the flow re-directing region, a spray path for reagent exiting the injection device when the valve member is moved outwardly from the bore away from the valve seating region. The spray path has a variable spray angle, relative to the axis, around the circumference of the valve seating region.
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