US 10,473,018 B2Granted

Exhaust line for a vehicle

AssigneeKatcon Global S.A.

InventorsJoseph Marie Gerard Vankan, Janusz Puczok

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Abstract

An exhaust line includes a housing having a wall with an opening and a baffle disposed within the opening. In certain embodiments, the exhaust line includes a divider between the wall and baffle that partially defines a mixing chamber for receiving an exhaust and a reducing agent, and partially defines a bypass chamber for receiving another portion of the exhaust. The divider defines an inlet and outlet facing respective upstream and downstream ends. The divider transfers heat from exhaust passing through the bypass chamber to the reducing agent inside the mixing chamber. In other embodiments, the baffle partially defines a first passageway substantially parallel to and offset from a center axis for delivering a portion of the exhaust to the mixing chamber, and a ramped surface partially defining a second passageway transverse to the first passageway for delivering another portion of the exhaust to the mixing chamber.

Claims31

Dependent claims

An exhaust line for a vehicle having an engine generating an exhaust and a device for supplying a reducing agent for use during treatment of the exhaust, said exhaust line comprising:

a mixing housing having a continuous wall defining upstream and downstream ends with said wall further defining an opening extending between said upstream and downstream ends and a port for receiving the reducing agent from the device with said wall having first and second segments;
a first treatment block adjacent said downstream end of said mixing housing for treatment of the exhaust;
a baffle disposed within said opening of said mixing housing;
and
a divider disposed between said wall and said baffle with said divider having first and second surfaces, said first surface of said divider, said first segment of said wall, and said baffle defining a mixing chamber in fluid communication with said upstream end for receiving a portion of the exhaust, and said mixing chamber in fluid communication with said port for receiving the reducing agent;
said second surface of said divider facing said second segment of said wall and defining a bypass chamber adjacent said mixing chamber with said divider defining a bypass inlet facing said upstream end for receiving another portion of the exhaust and a bypass outlet facing said downstream end for releasing the other portion of the exhaust with said divider operable to transfer heat from the other portion of the exhaust passing through said bypass chamber to the reducing agent inside said mixing chamber for effective treatment of the exhaust.

3 more elements

An exhaust line for a vehicle having an engine generating an exhaust and a device for supplying a reducing agent for use during treatment of the exhaust, said exhaust line comprising:

a mixing housing having a continuous wall defining upstream and downstream ends with said wall further defining an opening extending between said upstream and downstream ends and a fluid port for receiving the reducing agent from the device;
a first treatment block adjacent said downstream end of said mixing housing for treatment of the exhaust;
and
a baffle disposed within said opening of said mixing housing with said baffle and at least a portion of said wall defining a mixing chamber for mixing the exhaust and the reducing agent;
said baffle defining a center axis and having a first flange partially defining a first exhaust inlet and a first exhaust exit offset from said center axis with said first exhaust inlet and said first exhaust exit defining a first passageway extending in a direction substantially parallel to and offset from said center axis for delivering a portion of the exhaust to said mixing chamber;
said baffle further having a ramped surface partially defining a second exhaust inlet and a second exhaust exit offset from said center axis with said second exhaust inlet and said second exhaust exit defining a second passageway with said second passageway at said second exhaust exit extending in a direction transverse to said first passageway for delivering another portion of the exhaust to said mixing chamber so that the portions of the exhaust and the reducing agent intersect to form a vortex in said mixing chamber;
and
said fluid port in fluid communication with said mixing chamber and said fluid port defining a port axis extending transverse to said center axis with said port axis defining a plane extending through said mixing chamber with a surface of said first exhaust exit of said first flange located entirely on one side of said plane for directing the portion of the exhaust passing through said first passageway.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/837,636Filed 11 Dec 2017
Priority: EP 1720482330 Nov 2017
Published: US 2019/0162098 A130 May 2019
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification22 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 25/00
Flow mixers
B01F 25/3141
Wherein additional components are introduced at the circumference of the conduit: with additional mixing means other than injector mixers