US 9,810,126 B2Granted

Flow device for exhaust treatment system

AssigneeDonaldson Company, Inc.

InventorsJérôme Lebas, Stanislas Le Tallec, Antoine Provost, Stéphane Le Merdy, Phebe Helena Preethi, Paul Anthony Way

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Abstract

An exhaust treatment system includes an exhaust conduit for conveying exhaust gases from an engine of a vehicle. An aftertreatment device is disposed in the exhaust conduit. A flow device is disposed upstream of the aftertreatment device. The flow device includes a base having a first surface and an oppositely disposed second surface. The base defines a plurality of openings. A plurality of flow deflectors is engaged to the base at the plurality of openings. Each flow deflector includes a first deflector that extends outwardly from the first surface of the base and a second deflector that extends outwardly from the second surface of the base. The first and second deflectors define a passage. Flow of exhaust gases through the passage cause exhaust gases to swirl about a longitudinal axis of the exhaust conduit.

Claims19

Dependent claims

An exhaust conduit adapted to cause exhaust gases to swirl about a longitudinal axis of the exhaust conduit when the exhaust gases flow through the exhaust conduit, the exhaust conduit comprising:

a wall having a first side and an oppositely disposed second side, the wall defining a central flow passage extending through the wall, wherein the central flow passage is centered about the longitudinal axis of the exhaust conduit;
and
a plurality of flow deflecting passages extending through the wall, the plurality of flow deflecting passages being positioned around the central flow passage, the plurality of flow deflecting passages including a first set disposed at a first radial distance from the longitudinal axis and a second set disposed at a second radial distance from the longitudinal axis, and wherein the second radial distance is less than the first radial distance, the flow deflecting passages each including:
a hole in the wall, the hole defining a perimeter;
a first flow deflecting member extending from the first side of the wall, the first flow deflecting member joined to the wall at a first portion of the perimeter;
and
a second flow deflecting member extending from the second side of the wall, the second flow deflecting member joined to the wall at a second portion of the perimeter.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/035,234Filed 24 Sep 2013 · continuation
Priority: 12 Jan 2010
Published: US 2014/0116037 A11 May 2014
Granted: 7 Nov 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

F01N 3/2892
Construction of catalytic reactors: exhaust flow directors or the like, e.g. upstream of catalytic device
B01F 23/2132
By spraying or atomising of the liquids: using nozzles
B01F 25/3131
Wherein additional components are introduced in the centre of the conduit: with additional mixing means other than injector mixers, e.g. screens,…
B01F 25/45
Static mixers: mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads

Family

Application61/294,391Us provisional application · filed 12 Jan 2010
Application12/846,252Parent of this continuation · filed 29 Jul 2010
US 2014/0116037 A1Pre-grant publication · published 1 May 2014
US 8,539,761 B2Parent of this continuation
US 2011/0167810 A1Published application
US 9,810,126 B2This patent

From the US filing history. Foreign family members aren’t listed.