Delphi Technologies, Inc.

Umicore Ag & Co Kg

Danan Dou

Owen Herman Bailey

Ming Wei

Jiyang Yan

A treatment element and an exhaust emission control device for the treatment of gases in an exhaust passage of an internal combustion engine and methods of making thereof are described. In the method, at least two different catalyst compositions are applied along the major axis length of a single substrate to form a treatment element having at least two different zones of catalyst composition.

Method of making a NOx adsorber catalyst

An integrated multi-functional catalyst system includes a diesel particulate filter having an inlet side for receiving flow and an opposite outlet side, a substrate in the diesel particulate filter having an interior wall surface and an exterior wall surface, a first washcoat layer applied to the interior wall surface and adjacent the inlet side, and a second washcoat layer applied to the exterior wall surface and adjacent the outlet side, wherein flow distribution through the substrate is dispersed for minimizing back pressure. The diesel particulate filter may be one of a plurality of honeycomb cells.

Multiple washcoats on filter substrate

A process for controlling an exhaust system can comprise flowing exhaust gas from the engine past a first oxygen sensor, through a NOadsorber, past a second oxygen sensor, through a catalyst and past a third oxygen sensor, wherein the first oxygen sensor, the second oxygen sensor, and the third oxygen sensor, are in operable communication with an electronic control module, and using a switching delay between the first oxygen sensor and the second oxygen sensor to determine a NOvalue, wherein the NOvalue is selected from the group consisting of a NOregeneration time, a stored NOamount, a NOstorage efficiency, and combinations comprising at least one of the foregoing NOvalues. A desulfurization process can be initiated when the NOvalue is less than or equal to a first selected value. During the desulfurization process, when the third oxygen sensor signals a condition rich of stoichiometry, oxygen can be provided to the catalyst.

[object Object]

In one embodiment, a catalyst configuration, comprises: a substrate, a NiO layer disposed on the substrate, wherein the NiO layer comprises greater than or equal to about 75 wt % of the NiO in the catalyst configuration; and a catalyst layer comprising a NOx adsorbing catalyst. In another embodiment, a catalyst configuration, comprises: a substrate, a catalyst layer disposed on the substrate, wherein the catalyst layer comprises a NOx adsorbing catalyst and thermally treated NiO. In one embodiment, the method for making a NOx adsorber comprises: thermally treating NiO to a temperature of about a maximum catalyst application temperature minus 100&#xb0; C. and the maximum catalyst application temperature, disposing a catalyst configuration on the substrate, wherein the catalyst configuration comprises the thermally treated NiO and a NOx adsorption catalyst, and disposing the substrate in a housing.

NiO catalyst configurations, methods for making NOx adsorbers, and methods for reducing emissions

A NO adsorber composition comprising a substrate; and a washcoat, wherein said washcoat comprises a catalytic metal component, a trapping material, and a porous support, wherein said porous support comprises cerium oxide and an oxygenated metal selected from the group consisting of lanthanum oxide, yttrium oxide, neodymium oxide, and combinations comprising at least one of the foregoing oxygenated metals.

NO2 abatement composition with enhanced sulfur resistance

A NO adsorber catalyst system for treatment of gases in an exhaust discharge passage of an internal combustion engine comprising: a first adsorber catalyst supporting effective amounts of at least one noble metal component and a Ba component; and, a second adsorber catalyst supporting effective amounts of at least one noble metal catalyst, a Ba component, and a K component.

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Tulsa, OK, United States of America

Danan Dou