US 9,810,127 B2
Exhaust gas post-treatment device
Siegurd Kloeckner, Cologne (DE); and Christian Alt, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 15/36,848
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 12, 2014, PCT No. PCT/EP2014/074355
§ 371(c)(1), (2) Date May 16, 2016,
PCT Pub. No. WO2015/074926, PCT Pub. Date May 28, 2015.
Claims priority of application No. 10 2013 223 956 (DE), filed on Nov. 22, 2013.
Prior Publication US 2016/0298518 A1, Oct. 13, 2016
Int. Cl. F01N 3/00 (2006.01); F01N 3/28 (2006.01); B01F 5/06 (2006.01); F01N 3/20 (2006.01); F01N 13/18 (2010.01); B01F 5/04 (2006.01); B01F 3/04 (2006.01)
CPC F01N 3/2892 (2013.01) [B01F 3/04021 (2013.01); B01F 5/0473 (2013.01); B01F 5/0616 (2013.01); F01N 3/2066 (2013.01); F01N 13/1805 (2013.01); B01F 2005/0639 (2013.01); F01N 13/1872 (2013.01); F01N 2240/20 (2013.01); F01N 2610/02 (2013.01); F01N 2610/102 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An exhaust gas post-treatment device, comprising:
an exhaust pipe, through which a gas flow is guided, the gas flow being an exhaust gas of an internal combustion engine;
an injection device, associated with the pipe, for metered injection of an exhaust gas post-treatment agent into the gas flow; and
at least one mixing apparatus disposed in the pipe downstream from the injection device, each of the at least one mixing apparatus having several air guidance elements disposed in one plane, wherein the plane is oriented perpendicularly to an injection direction of the injection device, and the plane of the guidance elements being oblique to a flow direction of the gas flow in the pipe directly upstream from the mixing apparatus;
wherein the injection direction of the injection device is oblique to a flow direction of the gas flow in the pipe directly upstream from the mixing apparatus; and
wherein the air guidance elements are vanes and are distributed in the pipe radially around a circumference of the exhaust pipe.