DIESEL EXHAUST FLUID DEPOSIT MITIGATION
The present invention relates to an apparatus comprising an internal combustion engine structured to produce an exhaust flow; an exhaust system structured to receive the exhaust flow; a reductant injector (118) structured to inject reductant into a primary passage (206) of the exhaust system upstrea...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The present invention relates to an apparatus comprising an internal combustion engine structured to produce an exhaust flow; an exhaust system structured to receive the exhaust flow; a reductant injector (118) structured to inject reductant into a primary passage (206) of the exhaust system upstream of a catalyst (126); a bypass passage (210) structured to receive a portion of exhaust upstream of the reductant injector and to release the portion of exhaust downstream of the reductant injector; and an injector passage (208) structured to receive a portion of exhaust upstream of the reductant injector and further structured to flow the exhaust into the primary passage (206) around the reductant injector in a manner such that injector tip deposit formation is mitigated, the injector passage (208) and the bypass passage (210) located at opposite sides of a centerline (236) of the primary passage. The invention also relates to a decomposition mitigation assembly comprising said apparatus. |
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