Method for detecting urea deposits in an exhaust line of an automotive vehicle, method for eliminating urea deposits and automotive vehicle adapted to such methods
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United States of America Patent
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Aug 4, 2015
Grant Date -
Aug 1, 2013
app pub date -
Oct 21, 2010
filing date -
Oct 21, 2010
priority date (Note) -
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Abstract
A method is provided for detecting urea deposits in an exhaust line of an automotive vehicle and includes determination if an exhaust gas's temperature is reached, if the result of determination is positive, stoppage of urea injection, and determination of the quantity of NOx in the exhaust gases on the outlet of the selective catalytic reduction system. A comparison is performed between the quantity of NOx determined on the outlet of the selective catalytic reduction system and a theoretical quantity or a measured quantity of NOx produced by the internal combustion engine. If the comparison shows that the quantities are different, it is considered that urea deposits are present in the exhaust line. A vehicle is also disclosed.
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