Reagent dosing pump assembly
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United States of America Patent
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Dec 13, 2016
Grant Date -
Jan 9, 2014
app pub date -
Mar 22, 2012
filing date -
Mar 22, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pump assembly having improved cooling for use in a selective catalytic reduction system is disclosed. The pump assembly comprises a pump housing having a body portion and a nozzle portion extending from the body portion, a jacket including a cavity for receiving the pump housing, first and second ports for cooling fluid, and a flow guide disposed between the jacket and the pump housing. The cavity includes a first compartment for cooling fluid defined in part by the flow guide and in part by the pump housing and being in fluid communication with the first port; and a second compartment for cooling fluid defined in part by the flow guide and in part by the jacket. The first compartment is in fluid communication with the second port by way of the second compartment.
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