Volvo Truck Corporation

Soran Shwan

Fredrik Blomgren

Lennart Andersson

Lars Carlhammar

Kunpeng Xie

Mathias Magnussson

An aftertreatment system () connected downstream an internal combustion engine arrangement () for receiving combustion gas exhausted from the internal combustion engine arrangement () during operation thereof, the aftertreatment system () comprising a primary aftertreatment system () comprising a first catalytic reduction arrangement (); a secondary reduction system () comprising a second catalytic reduction arrangement ().

Aftertreatment system

A method is disclosed for cleaning a component of an exhaust aftertreatment system located downstream of a combustion engine in an exhaust flow path delimited by an outer wall. The exhaust aftertreatment system includes a first device releasably mounted in the outer wall upstream of the component and a second device releasably mounted in the outer wall downstream of the component, each of the devices being a sensor or an injector. The method includes sealing the exhaust flow path upstream of the first device and downstream of the second device, removing at least the first and second devices, thereby providing at least two openings in the outer wall, so that a cleaning flow path is provided, and introducing cleaning fluid into at least one of the openings, so that the cleaning fluid flows across the component via the cleaning flow path.

Method for cleaning a component of an exhaust aftertreatment system and an exhaust system

The invention relates to a method for controlling the temperature of an NOx controlling component in an exhaust after treatment system of an internal combustion engine. The NOx controlling component has inner surface portions defining an interior component space through which exhaust gases are arranged to flow in order to be NOx controlled, and has outer surface portions facing away from the interior component space. The method comprises the step of: controlling the temperature of at least a portion of the NOx controlling component by a heat transfer medium arranged outside of the outer surface portions. The invention also relates to an exhaust after treatment system and a vehicle with such a system.

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Mölndal, Sweden

Soran Shwan