公开(公告)号：US20200300146A1

公开(公告)日：2020-09-24

申请号：US16359885

申请日：2019-03-20

Applicant: Caterpillar Inc.

Inventor： Kurtis CHENOWETH ,  Jianping PAN ,  Mohamed DAOUD ,  Srinivasa Perumal VELU ,  Arvind JUJARE ,  Y. T. BUI

IPC: F01N3/28 ,  B01F11/00 ,  F01N3/20

Abstract: A selective catalytic reduction (SCR) system is disclosed. The SCR system may include a mixing tube with a mixing tube inlet; a diesel exhaust fluid (DEF) injector proximate to the mixing tube inlet; and a flow control device proximate to the mixing tube inlet, wherein the flow control device is positioned within the mixing tube or affixed to the mixing tube inlet, and wherein the flow control device includes a plurality of vanes arranged around a center of the flow control device.