Delphi Technologies, Inc.

Gm Global Technolgoy Operations, Inc.

Other

Mark David Hemingway

Joachim Kupe

William J LaBarge

Galen Bruce Fisher

David Emil Nelson

Haskell Simpkins

Bob Xiaobin Li

Darrell R Herling

Gregory Stephen Sims

Joseph V Bonadies

David Alexander Goulette

Suresh Baskaran

Thomas W Silvis

Thomas Roger Thoreson

John E Kirwan

Jean Joseph Botti

Carl Elmer Miller

James Zizelman

Eugene V Ripley

Kenneth Price

Delbert L Lessor

George A English

Brian J Christopher

Nicholas Alexander Pamphilis

Michael P Thornton

Jean J Botti

A NOX abatement system includes a first NOX adsorber capable of being disposed in-line and downstream of and in fluid communication with an engine. The NOX abatement system further includes a selective catalytic reduction catalyst disposed in-line and downstream of, and in direct fluid communication with, the first NOX adsorber. The selective catalytic reduction catalyst is capable of storing ammonia. An off-line reformer is disposed in selective communication with and upstream of the first NOX adsorber and the selective catalytic reduction catalyst. The reformer is capable of producing a reformate that includes primarily hydrogen and carbon monoxide.

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In one embodiment, a flow switch can comprise: a deflector having a diverging upstream portion; an aperture located in a downstream portion of the deflector; and a divider disposed downstream of the deflector. The deflector can be capable of diverting a fluid stream that contacts the upstream portion, around the deflector. The aperture can be capable of allowing a flow of a displacing fluid such that the displacing fluid can inhibit the diverted fluid stream from converging to pass through the divider. The divider can be capable of allowing a flow of the displacing fluid therethrough.

System and method for directing fluid flow

An exhaust emission control system that provides on-board ammonia generation includes a valve disposed upstream of the LNT and SCR catalyst that operates to selectively control the flow of engine exhaust gas to an LNT and/or an SCR catalyst; while reformate fuel is being conveyed from a reformer to the LNT, the valve operates to cause the exhaust gas to bypass the LNT and flow directly to the SCR catalyst. The exhaust emission control system further includes a controller provided with an algorithm that monitors engine operating conditions and exhaust gas conditions, estimates the cumulative amount of exhaust gas created by the engine and the amount of NOx stored in the LNT, and calculates the amount of NOx required to be converted to NH.

Engine exhaust emission control system providing on-board ammonia generation

One embodiment of a method of operating a NOx abatement system comprises: introducing an exhaust stream to an ammonia generator in a normal flow direction, adsorbing NOx from the exhaust stream in the ammonia generator, diverting the exhaust stream around the ammonia generator, introducing hydrogen to the ammonia generator in a direction opposite the normal flow direction, and generating ammonia within the ammonia generator.

Device and methods of ammonia generation for NOx abatement

In one embodiment, an exhaust treatment system comprises a selective catalytic reduction device, an off-line reformer disposed in selective fluid communication with and upstream of the selective catalytic reduction device, and a plasma reactor disposed downstream of and in fluid communication with the off-line reformer, and disposed upstream of and in fluid communication with the selective catalytic reduction device. The selective catalytic reduction device is capable of storing ammonia and of enabling the reaction of the ammonia with NOx. The reformer is capable of producing a reformate comprising hydrogen and nitrogen. The plasma reactor is capable of producing ammonia from the reformate, and is a thermal plasma reactor or a surface discharge non-thermal plasma reactor.

Exhaust treatment systems and methods for using the same

A simplified, low cost method for preparing a non-thermal plasma reactor comprises forming cell building blocks of material having a high dielectric constant, printing a conductive print onto the cell walls, assembling the cells into a multi-cell stack, providing electrical connections for connecting said cells to a high voltage source, applying insulation to said multi-cell stack, and inserting the multi-cell stack into a non-thermal plasma reactor housing. The simplified design eliminates the need for spacers between individual cells, thus reducing the total number of components. The method employing formed shape building blocks provides flexibility and may be used in conjunction with conventional processing methods. The printing sequence is defined from the top of the multi-cell stack to the bottom, further minimizing the number of components. Use of a three-dimensional conductive print further simplifies preparation by eliminating the need for a secondary conductive print along the edge of the stack.

Design and method of manufacturing a plasma reactor for treating auto emissions-stacked shapes

A catalyst for treating an exhaust gas stream comprising a NOoccluding catalyst structure having an outer layer comprising an alkaline earth component and a rare earth component.

Alkaline earth / rare earth lean NOx catalyst

A gas treatment system and method for using the same is disclosed. The gas treatment system, comprises: a non-thermal plasma reactor; and a catalyst composition disposed within said non-thermal plasma reactor, said catalyst composition comprising a MZr(PO), wherein M is a metal selected from the group consisting of platinum, palladium, ruthenium, silver, rhodium, osmium, iridium, and combinations comprising at least one of said foregoing metals. The process comprises exposing said gas to a plasma field and to the catalyst composition.

Non-thermal plasma reactor gas treatment system

A system and method for treating a combustion exhaust stream includes admitting an exhaust stream into a non-thermal plasma reactor having at least one segmented non-thermal plasma element including a plurality of individually energizable electrode segments defining a plurality of corona volumes. In a preferred embodiment, the electrode segments are progressively smaller in size in the exhaust flow direction to provide optimum plasma volume variation. Individually energizable electrodes are selectively activated to effect variable corona volumes for treating an exhaust stream. Additional reactor segments are activated only as needed, such as during periods of high exhaust flow, for efficient treatment of the exhaust stream so as to maintain optimized high space velocity in the active corona volume. The segmented elements may comprise a variety of shapes. The system and method are particularly suitable for gas pretreatment and downstream diesel particulate filter regeneration.

Non-thermal plasma reactor for lower power consumption

Scaleable inter-digitized tine non-thermal plasma reactor

A non-thermal plasma (NTP) reactor structural conductor element includes a base conductor support and a high dielectric constant (&ldquo;high k&rdquo;) barrier layer supported by and substantially surrounding the base conductor support to form a structural conductor NTP reactor element. The structural conductor element may comprise a variety of shapes such as plates, sheets, half-box, I shapes, C shapes, or comb shapes, among others. In one embodiment, the dielectric barrier layer includes a coating applied to the base conductor support. In another embodiment, the dielectric barrier layer includes a high k film laminated to the base conductor support. In yet another embodiment, the base conductor support integrally forms the dielectric barrier layer via conversion of surfaces of the base conductor using electrochemical, thermal or chemical means to form the dielectric barrier layer.

Non-thermal plasma reactor and method-structural conductor

A NO , catalyst combination for treating a lean exhaust gas stream comprising an alkaline earth-alumina catalyst and an alkaline earth-zeolite catalyst, arranged on a substrate such that the gas stream first contacts the alkaline earth-alumina catalyst prior to contacting the alkaline earth-zeolite catalyst.

Alumina/zeolite lean NOx catalyst

One embodiment of a non-precious metal catalyst for treating an exhaust gas stream comprises an alkali metal oxide component comprising lithium oxide, in combination with an alkaline earth support component, wherein the alkaline earth support component is an alkaline earth zeolite catalyst, an alkaline earth alumina catalyst, or a mixture thereof. Another embodiment of a non-precious metal catalyst for treating an exhaust gas stream comprises a substrate supporting a coating having more than about 6 weight percent of a lithium oxide component in combination with less than about 49 weight percent of an barium zeolite catalyst component and less than about 42 weight percent of a barium alumina catalyst component and not more than about 7 weight percent of a ceramic oxide binder.

Alkali metal/alkaline earth lean NOx catalyst

A catalyst for adsorbing oxides of nitrogen from the exhaust gases of an internal combustion engine, comprising an alkaline earth active catalyst site, and a transition metal oxide having a surface area of at least about 75 m /g.

High surface area lean NOx catalyst

A non-thermal plasma reactor element is provided comprising a multi-cell stack prepared from a plurality of formed building blocks of dielectric material, the walls of the building blocks defining a cell having an exhaust passage for flowing gas to be treated therethrough. A conductive print forming an electrode and connector is disposed on at least one wall of each of the cells and outer insulative plates, disposed on opposite ends of the multi-cell stack, are provided to protect the conductive print. The non-thermal plasma reactor element includes cells defined by a single structural dielectric barrier comprising a &ldquo;conductor-single structural dielectric barrier-exhaust passage-conductor&rdquo; arrangement, wherein individual cells of the reactor element are defined by a single structural dielectric barrier.

Growing community of inventors

Columbiaville, MI, United States of America

Mark David Hemingway