Arrangement for the dosed injection of a reducing medium into the exhaust tract of an internal combustion engine
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United States of America Patent
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Jan 11, 2011
Grant Date -
Aug 16, 2007
app pub date -
Apr 13, 2007
filing date -
Oct 13, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an arrangement for the dosed injection of a reducing agent into the exhaust tract of an internal combustion engine, comprising a pump for the pulsed pumping of the reducing agent and an atomizing injection nozzle disposed in the exhaust tract of the internal combustion engine, the injection nozzle includes a valve element which opens and closes the injection nozzle depending on the pressure generated by the pump and permits the injection of the reducing agent into the exhaust tract only when the pressure of the reducing agent is in excess of a certain value in order to ensure proper atomization of any reducing agent injected into the exhaust tract.
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