EXHAUST TREATMENT SYSTEM HAVING AN SCR WITH A CENTER INLET

摘要

An exhaust treatment system for a work vehicle, which has an exhaust conduit transmitting an exhaust flow from an engine and to a DOC system, is disclosed. The DOC system has a reductant introduced and mixed into the exhaust flow, and a DOC conduit connects the DOC to a center inlet of an SCR. The SCR includes at least two exhaust chambers. When the exhaust flow enters the SCR at the center inlet, the exhaust flow enters a central chamber where it is split into at least two separate exhaust flows which are moved in at least two different directions away from each other. Each separate exhaust flow is moved through a separate exhaust chamber and substrate. A conduit moves at least one of the separate exhaust flows into an area holding another exhaust flow, and the two separate exhaust flows are combined and expelled through an outlet.

主权项

1. An exhaust treatment system for a work vehicle, comprising:
an exhaust conduit transmitting an exhaust flow from an engine; a DOC system connected to the exhaust conduit, the DOC system having a reductant introduced and mixed into the exhaust flow, the DOC system including a DOC conduit; an SCR including a center inlet coupled to the DOC conduit, the SCR including upper and lower exhaust chambers such that, when the exhaust flow enters the SCR at the center inlet, the exhaust flow enters a central chamber where it is split into upper and lower exhaust flows, the upper exhaust flow is moved upward through the upper exhaust chamber and an upper substrate contained therein, to an upper exhaust area, while simultaneously the lower exhaust flow is moved from the central chamber downward through the lower exhaust chamber and a lower substrate contained therein to a lower exhaust area, a longitudinal conduit extends between and connects the lower and upper exhaust areas and the lower exhaust flow is moved upward through the longitudinal conduit to the upper exhaust area where the lower exhaust flow combines with the upper exhaust flow and combined exhaust flows are expelled through an outlet formed in an upper end of the SCR.