Faurecia Emissions Control Technologies Usa, LLC

Emcon Technologies LLC

Arvin Technologies, Inc.

Et US Holdings LLC

Robin Willats

Kwin Abram

Joseph Callahan

John Rohde

Jerome Brian Hornback

Ivan Arbuckle

Thibaut Contremoulins

Maria Saur

Chris Chapman

Jeffery Prairie

Edward C Kinnaird

Tony Parrish

John P Nohl

Govindaraj Kalyanasamy

Eric Nicole

Yan Wang

Eduardo Alano

Philip M Dimpelfeld

James Egan

Alfred N Tucker

Thorsten Keesser

Eric Ker

Anthony Morales

Dennis Boennen

Adam Mathews

David Lee McCrary

Joe Callahan

Joseph E Callahan

Edward Kinnaird

An exhaust aftertreatment system for use with an over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a flash-boil doser mounted to an exhaust conduit and a catalyst coupled to the exhaust conduit. The flash-boil doser configured to inject heated and pressurized reducing agent into an exhaust passageway defined by the exhaust conduit for distribution throughout exhaust gases passed through the exhaust conduit. The catalyst configured to react the reducing agent with the nitrous oxide in the flow of exhaust gases to provide treated exhaust gases with a reduced nitrous oxide amount.

Exhaust aftertreatment system with thermally controlled reagent doser

An exhaust component assembly includes a heat shield formed from a composite material and a mounting structure that attaches the heat shield to an outer housing of an exhaust component. The mounting structure comprises an insulator located between an outer surface of the outer housing an inner surface of the heat shield. A method of assembling the composite heat shield to the outer housing of the exhaust component assembly is also disclosed.

Insulated composite heat shield for vehicle exhaust system

An exhaust component assembly includes a heat shield and a mounting structure to attach the heat shield to an outer housing of an exhaust component. The mounting structure comprises a primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield and at least one secondary insulator positioned adjacent to the primary insulator. A method of assembling the heat shield to the outer housing of the exhaust component assembly is also disclosed.

Insulated heat shield for vehicle exhaust system

An automotive exhaust aftertreatment system for reducing effluents, such as nitrous oxides (NOx), in exhaust gasses passing through the system. The automotive exhaust aftertreatment system includes a dosing unit configured to inject primary and secondary reductant fluids into exhaust gasses based on various strategies to optimize operation of the system.

Automotive exhaust aftertreatment system with multi-reductant injection and doser controls

An automotive vehicle includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a mixer, a doser that injects a reducing agent into the mixer, and a selective catalytic reduction unit. The exhaust aftertreatment system mixes exhaust gases and the reducing agent for treatment prior to the exhaust gases being discharged into the atmosphere. Some components of the exhaust aftertreatment system are positioned proximate to an associated combustion engine to minimize thermal energy loss from the exhaust gases prior to interaction with the exhaust aftertreatment system.

Mixer system proximate to vehicle engine

An exhaust component includes a housing defining an internal cavity, at least one exhaust aftertreatment component positioned within the internal cavity, and a heat exchanger. The housing has an inlet configured to receive engine exhaust gases and an outlet configured to direct the engine exhaust gasses into a tailpipe. A reductant source is associated with the housing and produces ammonia to mix with engine exhaust gases entering the exhaust aftertreatment component. The heat exchanger is positioned within the internal cavity to reduce a temperature of the engine exhaust gases exiting the outlet.

Exhaust aftertreatment component with heat exchanger

An exhaust component assembly includes a housing having at least one mount area configured to be attached to another exhaust component. A primary heat shield is attached to the housing and includes at least one open area at the mount area. A secondary heat shield positioned adjacent to the primary heat shield to at least partially cover the mount area. A method of assembling the primary and secondary heat shields to the housing of the exhaust component assembly is also disclosed.

Heat shield with insulated doser and sensor mount areas for a vehicle exhaust component

An exhaust component assembly includes a heat shield and a mounting structure to attach the heat shield to an outer housing of an exhaust component. The mounting structure includes a primary insulator located between an outer surface of the outer housing and an inner surface of the heat shield, and at least one secondary insulator positioned adjacent the primary insulator. The primary insulator comprises a sheet of material including at least one encapsulated insulating cavity.

Vehicle exhaust system component having an insulating heat shield assembly with encapsulated pockets

A vehicle exhaust system includes an outer housing defining an internal cavity surrounding an axis, an inlet baffle configured to direct engine exhaust gas into the internal cavity, and an injector that is configured to spray a fluid into the internal cavity to mix with engine exhaust gas. An inner wall is spaced radially inward of an inner surface of the outer housing to define a gap. The inner wall has an impingement side facing the axis and a non-impingement side facing the gap. At least one heat transfer element is positioned within the gap and in is contact with at least one of the inner surface of the outer housing and the non-impingement side of the inner wall to transfer heat through the inner wall to the impingement side to reduce spray deposit formation.

Mixer for a vehicle exhaust system

A vehicle exhaust component includes a first exhaust component, a second exhaust component downstream of the first exhaust component, and a mixer that connects an outlet of the first exhaust component to an inlet to the second exhaust component. The mixer includes a first housing portion with a first connection interface and a second housing portion with a second connection interface. The first housing portion is attached to the outlet of the first exhaust component and the second housing portion is attached to the inlet of the second exhaust component. The first and second connection interfaces are connectable to each other in one of a plurality of different connection orientations such that the first and second exhaust components can be positioned at any of a plurality of different mounting orientations relative to each other.

Modular mixer for exhaust assembly

A mixer assembly for a vehicle exhaust system includes a mixer having an upstream end and a downstream end. The mixer defines an internal cavity within which exhaust gases are mixed. A mixer inlet body has an enclosed end and an open end that attaches to the upstream end of the mixer. The mixer inlet body includes an outer peripheral surface extending from the enclosed end to the open end to surround a center axis. The outer peripheral surface includes an inlet port and the enclosed end includes a helically formed portion that initiates a swirling motion to the exhaust gases exiting the inlet port.

Modular mixer inlet and mixer assembly to provide for compact mixer

A vehicle exhaust component assembly includes a first exhaust component, a second exhaust component downstream of the first exhaust component, and an injection system configured to inject a reducing agent into engine exhaust gases upstream of the second exhaust component. A mixer connects an outlet of the first exhaust component to an inlet to the second exhaust component. The mixer includes an outer housing that is configured to direct a mixture of the reducing agent and the engine exhaust gases into the second exhaust component. The mixer also includes at least one insulation feature that is configured to reduce heat lost at the outer housing.

Insulated cover for mixer assembly

A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an ON position where movement of the vane is actively controlled by the valve actuator and an OFF position where movement of the vane is passively controlled by exhaust gas flow.

Hybrid valve for attenuation of low frequency noise

A heat extraction component for an exhaust component is rigidly connected to a cooling tube. The cooling tube is inserted through a hole in the heat extraction component and is brazed or plastically deformed to provide the rigid connection interface.

Method and apparatus for providing good thermal contact between an exhaust component and heat extraction component

A passive valve assembly for an exhaust component includes a vane that is positioned within an exhaust gas flow path. The vane is pivoted from a closed position to an open position in response to exhaust gas flow overcoming a biasing force. A stop is positioned within the exhaust component and cooperates with the vane to define a closed position for the vane.

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Columbus, IN, United States of America

Robin Willats