Tenneco Automotive Operating Company Inc.

Alison Chambers

Stephen M Thomas

Manoj K Sampath

Ryan A Floyd

Theodore J Tarabulski

Jeremy D Popovich

James J Reynolds, Iii

Joseph G Ralph

Scott M Martin

R Gifford Broderick

P Robert Santangeli

Michael Wenk

An exhaust gas treatment system for reducing emissions from an engine includes an exhaust conduit adapted to supply an exhaust stream from the engine to an exhaust treatment device. The conduit includes an aperture. An injector injects a reagent through the aperture and into the exhaust stream. A flow modifier is positioned within the exhaust conduit upstream of the injector. The flow modifier includes a diverter for increasing the velocity of the exhaust gas at a predetermined location within the conduit relative to the injected reagent.

Pre-injection exhaust flow modifier

Methods and apparatus for injecting reagent, such as an aqueous urea solution, into an exhaust stream in order to reduce emissions from an engine exhaust. The present teachings can use a whirl plate having a plurality of whirl slots surrounding an exit orifice of an injector, which produce a high velocity rotating flow in the whirl chamber. When the rotating flow of reagent is passed through the exit orifice into an exhaust stream, atomization occurs from a combination of centrifugal force and shearing of the reagent by air as it jets into the exhaust stream.

Method and apparatus for injecting atomized fluids

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Garden City, MI, United States of America

Alison Chambers