Search International and National Patent Collections

1. (WO2016064567) DIESEL EXHAUST FLUID MIXING BODY USING VARIABLE CROSS-SECTION SWITCHBACK ARRANGEMENT

Pub. No.:    WO/2016/064567    International Application No.:    PCT/US2015/054137
Publication Date: Fri Apr 29 01:59:59 CEST 2016 International Filing Date: Wed Oct 07 01:59:59 CEST 2015
IPC: F01N 3/10
Applicants: CUMMINS EMISSION SOLUTIONS, INC.
Inventors: BUECHLER, John G.
MITCHELL, Douglas A.
JOHNSON, Ryan M.
GOSS, James
Title: DIESEL EXHAUST FLUID MIXING BODY USING VARIABLE CROSS-SECTION SWITCHBACK ARRANGEMENT
Abstract:
An aftertreatment system includes a filter configured to receive an exhaust gas and a selective catalytic reduction (SCR) system configured to treat the exhaust gas. A body mixer is disposed downstream of the filter and upstream of the SCR system. The body mixer includes a housing defining an internal volume and including at least a first passageway, a second passageway, and a third passageway. The first passageway receives a flow of the exhaust gas from the filter and directs the flow of the exhaust gas towards the second passageway. The second passageway redirects the flow in a second direction opposite the first direction towards the third passageway. The third passageway redirects the flow in a third direction opposite the second direction towards the SCR system. An injection port is disposed on a sidewall of the housing and configured to communicate an exhaust reductant into the internal volume.