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AssigneeScania CV AB
InventorsKim PETERSSON, Patrik GALLONE
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The invention relates to a flow distribution plate associated with an engine exhaust gas aftertreatment device, wherein the plate is perforated and is adapted to be arranged at an inlet to an exhaust gas purifying unit to improve the flow distribution of exhaust gas into the purifying unit. The flow distribution plate is curved in relation to the inlet, such that a more uniform flow velocity distribution is achieved over the inlet. The invention also relates to an engine exhaust gas aftertreatment device and a vehicle comprising such an engine exhaust gas aftertreatment device.
A flow distribution plate associated with an engine exhaust gas aftertreatment device, wherein the plate is perforated and is adapted to be arranged at an inlet to an exhaust gas purifying unit to improve the flow distribution of exhaust gas into the purifying unit, wherein the flow distribution plate is curved in relation to the inlet, such that a more uniform flow velocity distribution is achieved over the inlet, wherein the curvature of the flow distribution plate is asymmetric and formed depending on the direction of the inflow of exhaust gas in relation to the inlet, wherein the flow distribution plate is curved such that the incoming exhaust gas with the highest flow velocity hits a part of the flow distribution plate, which is furthest away from the inlet to the purifying unit.
An engine exhaust gas aftertreatment device, comprising at least one exhaust gas purifying unit with an inlet, wherein a flow distribution plate is arranged at the inlet of the purifying unit, wherein said flow distribution plate wherein the plate is perforated and is adapted to be arranged at an inlet to an exhaust gas purifying unit to improve the flow distribution of exhaust gas into the purifying unit, wherein the flow distribution plate is curved in relation to the inlet, such that a more uniform flow velocity distribution is achieved over the inlet, wherein the curvature of the flow distribution plate is asymmetric and formed depending on the direction of the inflow of exhaust gas in relation to the inlet, wherein the flow distribution plate is curved such that the incoming exhaust gas with the highest flow velocity hits a part of the flow distribution plate, which is furthest away from the inlet to the purifying unit.
The device according to claim 7, wherein the purifying unit is a selective catalytic reaction catalyst.
A vehicle comprising an engine exhaust gas aftertreatment device comprising at least one exhaust gas purifying unit with an inlet, wherein a flow distribution plate is arranged at the inlet of the purifying unit, wherein said flow distribution plate wherein the plate is perforated and is adapted to be arranged at an inlet to an exhaust gas purifying unit to improve the flow distribution of exhaust gas into the purifying unit, wherein the flow distribution plate is curved in relation to the inlet, such that a more uniform flow velocity distribution is achieved over the inlet, wherein the curvature of the flow distribution plate is asymmetric and formed depending on the direction of the inflow of exhaust gas in relation to the inlet, wherein the flow distribution plate is curved such that the incoming exhaust qas with the highest flow velocity hits a part of the flow distribution plate, which is furthest away from the inlet to the purifying unit.
Dependencies are inferred from the claim text.