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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Chiruta, Mihai, Henry, Lindsey R, Alonzo, Jim L, Mitchell, Douglas A
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
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.