Device and method at an exhaust aftertreatment system for an engine
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United States of America Patent
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May 1, 2018
Issued Date -
N/A
app pub date -
May 21, 2014
filing date -
May 21, 2013
priority date (Note) -
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Abstract
A method at an exhaust gas cleaning system for an engine (235) in which a reducing agent is added to a passage (290) for exhaust gases from the engine (235) for cleaning the exhaust gases. The exhaust gas cleaning system includes arrangements (270) that require a certain temperature level (Tmax) in order to achieve catalytic exhaust gas cleaning. The method is to distribute and store (s430) a limited amount of reducing agent at temperature level (Tmax); and to use (s440) during a cold start of the exhaust gas cleaning system, the distributed and stored reducing agent to achieve the catalytic exhaust gas cleaning. Also a computer program product (200; 210) to implement the method. Also an arrangement for an exhaust gas cleaning system for an engine (235), and a motor vehicle (100) equipped with the arrangement.
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