Cummins Emission Solutions Inc.

Mahendra Mittapalli

Ryan M Johnson

Kartiki Jagtap

Samuel Johnson

Udit Bhaveshkumar Shah

Jim L Alonzo

Matthew K Volmerding

Apoorv Kalyankar

Vinay Kumar Joshi

Enoch Nanduru

Pranjal Naik

Suraj D Khalate

Pradnya Chandrakant Joshi

Vaidyanadan Sundaram

Mihai Chiruta

Douglas Mitchell

Taren DeHart

Nathan D Hansen

Elliot Dilger

Christopher A Thompson

Reshma Pattan

Lakshmanan Arunachalam

Pradnya Pranav Ballal

Aaron Riedel

Priyanka S Kujur

An inlet assembly for a housing containing an aftertreatment component of an aftertreatment system comprises an inlet conduit configured to be disposed substantially perpendicular to a longitudinal axis of the housing. A flow redirection conduit is disposed downstream of the inlet conduit and is coupled to the end of the housing. A plurality of protrusions project from a sidewall of the flow redirection conduit towards an inlet face of the aftertreatment component and are configured to provide a uniform exhaust gas flow to the inlet face. Alternatively, a flow distribution plate having a plurality of slots defined substantially perpendicular to the longitudinal axis is disposed in the flow redirection conduit, the plate being inclined with respect to the longitudinal axis. The slots are configured to provide a uniform exhaust gas flow to the inlet face.

Systems and methods for providing uniform exhaust gas flow to an aftertreatment component

A mixing assembly for an exhaust system can include an outer body, a front plate, a back plate, a middle member, and an inner member. The outer body defines an interior volume and has a center axis. The front plate defines an upstream portion of the interior volume and the back plate defines a downstream portion of the interior volume. The middle member is positioned transverse to the center axis and defines a volume. The inner member is positioned coaxially with the middle member inside the middle member. The front plate includes inlets configured to direct exhaust to (i) a first flow path into an interior of the inner member, (ii) a second flow path into the volume of the middle member between a sidewall of the middle member and a sidewall of the inner member, and (iii) a third flow path into the interior volume of the outer body.

Body mixing decomposition reactor

A decomposition chamber for an aftertreatment system includes: a body comprising: an inlet configured to receive exhaust gas, an outlet configured to expel the exhaust gas, a thermal management chamber in fluid communication with the inlet, the thermal management chamber configured to receive an exhaust gas first portion from the inlet, an exhaust assist chamber in fluid communication with the inlet, the exhaust assist chamber configured to receive an exhaust gas second portion from the inlet, and a main flow chamber in fluid communication with the inlet, the main flow chamber configured to receive an exhaust gas third portion from the inlet, receive the exhaust gas first portion from the thermal management chamber, and receive the exhaust gas second portion from the exhaust assist chamber.

Decomposition chamber for aftertreatment systems

A doser mounting bracket for coupling a doser to an exhaust gas aftertreatment system component having a sidewall and an exhaust gas aftertreatment system component opening includes a lower surface, an engagement wall, a central structure, an upper surface, and an attachment structure. The lower surface is configured to be held in a position opposing the sidewall. The engagement wall extends from the lower surface. The central structure has an opening that extends therethrough and includes a centering structure that extends from the lower surface and is configured to be received within the exhaust gas aftertreatment system component opening. The attachment structure extends from the upper surface and is configured to be coupled to the doser. The engagement wall is configured to separate the lower surface from the sidewall when the engagement wall interfaces with the sidewall such that a pocket is formed between the engagement wall, the centering structure, and the lower surface.

Systems and methods for mounting a doser to a component of an exhaust aftertreatment system

A decomposition chamber for an aftertreatment system includes: a body including: an inlet configured to receive exhaust gas; an outlet configured to expel the exhaust gas, a thermal management chamber in fluid communication with the inlet, the thermal management chamber configured to receive a first portion of the exhaust gas from the inlet, and a main flow chamber in fluid communication with the inlet, the main flow chamber configured to receive a second portion of the exhaust gas from the inlet and to receive the first portion of the exhaust gas from the thermal management chamber; and a diffuser positioned within the main flow chamber, the diffuser including: a diffuser inlet portion including a plurality of diffuser perforations, the diffuser inlet portion configured to receive the exhaust gas from the main flow chamber, and a diffuser flange portion configured to receive the exhaust gas from the diffuser inlet portion and provide the exhaust gas to the outlet.

A decomposition reactor for an exhaust system includes an exterior component defining an internal volume and having an inlet and an outlet with the inlet and outlet are formed on a same side of the exterior component. A flow divider is positioned within the internal volume and defines a thermal management chamber and a main flow chamber. A first flow path of exhaust flows from the inlet into the main flow chamber to mix with dosed, and a second flow path of exhaust flows from the inlet into the thermal management chamber to control a temperature of a portion of the flow divider. In some implementations, one or more swirling diverters can be coupled to the flow divider and positioned proximate the outlet of the exterior component to impart a vortical motion to a combined reductant and exhaust gas flow exiting out the outlet.

Reductant decomposition reactor chamber

Various embodiments provide for apparatuses and systems involving a reactor pipe configured to receive reductant from an injector into a flow of exhaust exiting an engine. The reactor pipe comprises an inlet portion, a plurality of louvers, an outlet portion, and a radial loop. The inlet portion is structured to receive the flow exiting the engine into the reactor pipe. The louvers are structured to alter a direction of the flow. Further, the radial loop is configured to extend between the inlet portion and the outlet portion and receives the flow of exhaust through the inlet portion. The radial loop also directs the flow of the exhaust toward the outlet portion and reduces the velocity of the flow of the exhaust such that the reductant has an increased amount of time to react with the exhaust.

Compact radial exterior exhaust assisted decomposition reactor pipe

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Mancherial, India

Mahendra Mittapalli