US 9,810,123 B2
Exhaust gas aftertreatment device with injection section
Alexander Kauderer, Kuchen (DE); Tobias Wolf, Köngen (DE); and Kirill Karelin, Böblingen (DE)
Assigned to Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen (DE)
Filed by Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen (DE)
Filed on Nov. 5, 2015, as Appl. No. 14/933,417.
Claims priority of application No. 10 2014 222 698 (DE), filed on Nov. 6, 2014.
Prior Publication US 2016/0131007 A1, May 12, 2016
Int. Cl. B01D 50/00 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01); F01N 13/00 (2010.01); B01D 53/94 (2006.01); B01F 5/04 (2006.01); B01F 5/06 (2006.01); B01F 3/04 (2006.01); F01N 3/10 (2006.01); F01N 3/021 (2006.01)
CPC F01N 3/2066 (2013.01) [B01D 53/9418 (2013.01); B01D 53/9431 (2013.01); B01F 3/04049 (2013.01); B01F 5/0473 (2013.01); B01F 5/0608 (2013.01); F01N 3/2892 (2013.01); F01N 13/0093 (2014.06); F01N 13/0097 (2014.06); F01N 3/021 (2013.01); F01N 3/103 (2013.01); F01N 2240/20 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01); Y02T 10/24 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An injection section for an exhaust system of an internal combustion engine, the injection section comprising:
a channel for conducting an exhaust gas flow;
an injector connection arranged laterally on the channel, on which an injector for introducing a fluid into the exhaust gas flow can be connected; and
an injection chamber formed in the channel in a region of the injector connection, the injection chamber being delimited by a perforated first separating wall through which exhaust gas can flow and which, with respect to the exhaust gas flow, is arranged in the channel upstream of the injector connection and being delimited by a perforated second separating wall through which exhaust gas can flow and which, with respect to the exhaust gas flow, is arranged in the channel downstream of the injector connection, wherein:
the first separating wall comprises a perforation configuration to provide a predominantly or exclusively eccentric exhaust gas flow through the first separating wall, with respect to a longitudinal center axis of the channel, whereby an entering main part of the exhaust gas flow eccentrically enters the injection chamber; and
the second separating wall comprises a perforation configuration to provide a predominantly or exclusively concentric exhaust gas flow through the second separating wall, with respect to a longitudinal center axis of the channel, whereby an exiting main part of the exhaust gas flow concentrically exits the injection chamber.