Exhaust aftertreatment system for a combustion engine

Abstract

The invention relates to an exhaust aftertreatment system () for a combustion engine (), comprising, an outer casing () comprising at least one exhaust gas inlet () and at least one exhaust gas outlet (), at least one catalyst (') being located in an inner volume () of the outer casing (), wherein the system () is configured such that during use of the system () exhaust gas flows from the at least one exhaust gas inlet () at an inlet velocity, through the at least one catalyst (′) at a catalyst velocity, into the inner volume () outside the at least one catalyst (′) and to the at least one exhaust gas outlet (), and further such that the exhaust gas flows in the inner volume () outside the at least one catalyst () through at least one cross sectional area (A) being defined and limited by at least a perimeter surface (′) of the at least one catalyst (′) and an inner surface () of the outer casing () or by at least two catalyst parameter surfaces (′), wherein the at least one cross sectional area (A) is sized such that during use of the system () the exhaust gas flows through the at least one cross sectional area (A) at a first inner volume velocity being higher than the catalyst velocity, and wherein the system () further comprises at least one sensor () for measuring at least one parameter being related to the exhaust gas, said at least one sensor () being located in the inner volume () at a location where an exhaust gas flow velocity is higher than the catalyst velocity. The invention also relates to a vehicle () comprising such a system ().