Faurecia Emissions Control Technologies Usa, LLC

Edward C Kinnaird

John Rohde

Tony Parrish

Madhuri Gandikota

Atul Shinde

Robin Willats

Eric Nicole

Eduardo Alano

Philip M Dimpelfeld

Chris Chapman

Alfred N Tucker

Eric Ker

Randy Cvelbar

Shashidhara Rajashekharaiah

An exemplary vehicle exhaust system includes, among other things, a housing defining a fluid chamber and at least one pressure sensor positioned within the fluid chamber. The housing has a fluid inlet configured to receive fluid from a fluid supply and a fluid outlet. A heater heats fluid supplied from the fluid supply such that heated fluid can be injected into a vehicle exhaust component via the fluid outlet. A controller is configured to receive pressure data from the at least one pressure sensor and to determine optimal timing for dosing of the vehicle exhaust component based on the pressure data.

Flash boiling injection control

An exhaust component assembly for a vehicle exhaust system includes a housing defining an internal cavity configured to receive an exhaust gas after-treatment component. A first chamber is in fluid communication with the internal cavity upstream of the exhaust gas after-treatment component. A first nozzle introduces fluid into the first chamber and a first valve controls flow of the fluid from the first chamber into the internal cavity. A heat source is associated with the first nozzle or first chamber. A second chamber is in fluid communication with the internal cavity upstream of the exhaust gas after-treatment component, and the second chamber is a non-heated chamber. A second nozzle introduces fluid into the second chamber and a second valve controls flow of the fluid from the second chamber into the internal cavity. A controller controls the first and second valves based on at least one predetermined operating condition.

Hybrid doser

A heater for a vehicle exhaust system includes a housing defining a fluid chamber, and the housing has a fluid inlet configured to receive fluid from a fluid supply and a fluid outlet. A helical body is positioned within the fluid chamber and a heater is integrated into the helical body to heat fluid supplied from the fluid supply such that heated fluid can be injected into a vehicle exhaust component via the fluid outlet. At least one sensor is integrated into the helical body to measure a fluid characteristic.

Integrated helical heater and temperature sensor

A mixer for a vehicle exhaust gas system includes a mixer housing defining an internal cavity and having a mixer inlet configured to receive exhaust gas and a mixer outlet to direct exhaust gas to downstream exhaust components. A flow device is configured to receive the exhaust gas from the mixer inlet and to facilitate mixing of the exhaust gas and a reductant introduced into the first flow device. The flow device comprises a Venturi body centered on a body center axis, and the Venturi body comprises a body inlet configured to receive the exhaust gas from the mixer inlet and a body outlet configured to provide the exhaust gas to the mixer outlet. The Venturi body also includes a support flange extending from the body outlet at an offset angle to an internal edge of the mixer housing. An upstream vane is positioned within the Venturi body proximate the body inlet and is coupled to an upstream vane hub that is centered on an upstream vane hub axis. A downstream vane is positioned within the Venturi body proximate the body outlet and is coupled to a downstream vane hub that is centered on a downstream vane hub axis. The upstream vane hub axis is radially offset from the body center axis by an offset distance and/or the downstream vane hub axis is radially offset from the body center axis by an offset distance.

Mixer assembly for vehicle exhaust system

An exhaust aftertreatment system for use with over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a reducing agent mixer with a mixing can and a doser configured to inject heated and pressurized reducing agent into the mixing can for distribution throughout exhaust gases passed through the mixing can.

Automotive exhaust aftertreatment system with doser

An injection assembly for a vehicle exhaust system includes a housing defining a fluid cavity, a doser mounted to the housing and configured to inject a fluid into the fluid cavity, and a valve to control flow of the fluid. The valve is moveable between an open position and a closed position. A resilient member is configured with a biasing force to bias the valve to the closed position. The biasing force is overcome when fluid is heated downstream of the valve and exceeds a predetermined pressure level to allow backflow into the fluid cavity.

Dual purpose doser spring

An automotive exhaust aftertreatment system includes a doser. The doser includes a doser body and a valve system that opens to discharge a reagent into exhaust gas. The doser includes a heater to heat the reagent prior to releasing the reagent into the exhaust gas.

Dual purpose heating and cooling element for exhaust aftertreatment system

A vehicle exhaust system includes a mixer assembly for a vehicle exhaust system. The mixer assembly includes a mixer housing that defines an internal cavity and which includes at least one injection opening. A manifold is positioned within the internal cavity at the injection opening. A primary injector is configured to inject fluid through the injection opening and into the internal cavity, and at least one secondary injector, which is separate from the primary injector, is configured to inject fluid into the internal cavity when operating temperatures fall below a predetermined level.

Mixer and doser cone assembly with injector for low temperature conditions

An exhaust aftertreatment system for use with over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a reducing agent mixer with a mixing can and a flash-boil doser configured to inject heated and pressurized reducing agent into the mixing can for distribution throughout exhaust gases passed through the mixing can.

Automotive exhaust aftertreatment system with flash-boil doser

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 exhaust system includes a first exhaust after-treatment system receiving exhaust gases generated by an engine, a second exhaust after-treatment system downstream of the first exhaust after-treatment system, and at least one bypass connecting an engine outlet to an inlet to the second exhaust after-treatment system. A turbocharger is associated with the bypass and a bypass valve is located upstream of the turbocharger. The bypass valve is moveable between an open position to bypass exhaust gas flow to the first exhaust after-treatment system, a closed position to direct all exhaust gas flow to the first exhaust after-treatment system, and a partially open position where one portion of exhaust gas flow is directed into the first exhaust after-treatment system and a remaining portion of exhaust gas flow is directed into the turbocharger. A controller controls movement of the bypass valve between the open, closed, and partially open positions.

Method and apparatus for turbo bypass valve operation strategy for close coupled SCR

An automotive exhaust aftertreatment system includes an onboard ammonium carbamate reactor. The onboard ammonium carbamate reactor is coupled to a diesel emission fluid reservoir also included in the system and is configured to generate aqueous ammonium carbamate solution from diesel emission fluid. A doser configured to inject the generated aqueous ammonium carbamate solution has integrated heating.

Automotive exhaust aftertreatment system having onboard ammonia reactor with heated doser

An automotive exhaust aftertreatment system includes an onboard ammonium carbamate reactor. The onboard ammonium carbamate reactor is coupled to a diesel emission fluid reservoir also included in the system and is configured to generate aqueous ammonium carbamate solution from diesel emission fluid. A hybrid heating system for use with the ammonium carbamate reactor is provided in this disclosure.

Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating

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.

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Columbus, IN, United States of America

Edward C Kinnaird