Method for operating a delivery device for a reducing agent and delivery device for a reducing agent
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United States of America Patent
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Sep 26, 2017
Grant Date -
Dec 27, 2012
app pub date -
Jul 9, 2012
filing date -
Jan 8, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method for operating a delivery device for delivering a reducing agent from a reducing agent tank into an exhaust treatment device of an internal combustion engine of a motor vehicle, includes at least intermittently carrying out a ventilation process of the delivery device during operation of the internal combustion engine. A registration of a ventilation process first occurs. A timing unit having a preset time interval and/or a mass-flow summing unit having a preset total mass flow is then actuated. When the preset time interval and/or the preset total mass flow is reached, the ventilation process is then carried out. In particular, monitoring the delivery device by a pressure sensor can thus be omitted. A delivery device for delivering a reducing agent is also provided.
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