Patent application number | Description | Published |
20080207438 | Catalytic material and catalyst for purifying exhaust gas component - Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of Nd | 08-28-2008 |
20090025368 | EXHAUST GAS AFTER TREATMENT SYSTEM AND METHOD FOR OPERATING AN EXHAUST GAS AFTER TREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINE - A system for controlling performance of an internal combustion engine. The system may include an internal combustion engine having an exhaust system for processing gases exhausted from the internal combustion engine. The exhaust system may be comprised of at least one mixing device, at least one emission control device, and a delivery apparatus for delivering an agent affecting operation of the emission control device into the exhaust system. The at least one mixing device may be located downstream of the internal combustion engine and upstream of the at least one emission control device, and the delivery apparatus may be located upstream of the emission control device. The system may include a controller to adjust at least one engine parameter in relation to an operating condition of the mixing device. | 01-29-2009 |
20090041636 | CATALYST-SUPPORTED PARTICULATE FILTER - In at least part of a catalyst layer of a particulate filter, a second catalyst part is exposed on the surface of the catalyst layer to overlie a first catalyst part, the first catalyst part contains Pt-carried activated alumina particles, the second catalyst part contains ZrNd-based mixed oxide particles containing a rare earth metal M and at least one of the first catalyst part and the second catalyst part further contains CeZr-based mixed oxide particles containing a rare earth metal R. | 02-12-2009 |
20090041637 | CATALYST-SUPPORTED PARTICULATE FILTER - In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency. | 02-12-2009 |
20090099012 | CATALYST-SUPPORTED PARTICULATE - A catalyst layer formed on the walls of exhaust gas channels in a particulate filter contains a catalyst material in the form of secondary particles, each secondary particle being formed so that at least two kinds of primary particles selected from the group consisting of primary particles of activated alumina, primary particles of a Zr-based mixed oxide and primary particles of a Ce-based mixed oxide are mixed and cohere together. Each of the primary particles of the Zr-based mixed oxide contains Zr and a rare earth metal Z other than Ce and each of the primary particles of the Ce-based mixed oxide contains Ce, Zr and a rare earth metal R other than Ce. | 04-16-2009 |
20090107124 | CATALYST-SUPPORTED PARTICULATE FILTER - A catalyst layer formed on the walls of exhaust gas channels in a particulate filter contains a catalyst material containing at least two kinds of primary particles selected from the group consisting of primary particles of activated alumina, primary particles of a ZrNd-based mixed oxide and primary particles of a CeZr-based mixed oxide. The catalyst material is formed so that primary particles of one of the ZrNd-based mixed oxide and the CeZr-based mixed oxide are dispersedly carried on the surface of each of secondary particles. Each secondary particle is formed by cohesion of at least one kind of primary particles selected from the group consisting of primary particles of activated alumina and primary particles of the other of the ZrNd-based mixed oxide and the CeZr-based mixed oxide. | 04-30-2009 |
20090241495 | PARTICULATE FILTER - Disclosed is a particulate filter | 10-01-2009 |
20090298673 | EXHAUST GAS PURIFICATION CATALYST - An exhaust gas purification catalyst includes a catalyst layer formed on a support. The catalyst layer contains Ce-containing oxide particles having an oxygen storage/release capacity and a catalytic metal. The catalyst layer further contains a large number of iron oxide particles of 300 nm diameter or less that are dispersed therein and are in contact with the Ce-containing oxide particles. When observed by electron microscopy, the proportion of the area of iron oxide particles of 300 nm diameter or less to the total area of all of iron oxide particles in the catalyst layer is 30% or more. | 12-03-2009 |
20110107751 | EXHAUST GAS PURIFICATION CATALYST - In an exhaust gas purification catalyst in which Rh-doped CeZr-based mixed oxide powder and precious-metal (at least one of Pt and Pd)-supporting heat-resistant powder are included in a catalyst layer 2 provided on a support 1, Rh-doped CeZr-based mixed oxide particles either contain at least one of Pr, La, and Y, or are complexed with Al | 05-12-2011 |
20140205508 | CATALYZED PARTICULATE FILTER - A filter is configured for efficient combustion of particulates accumulated on a catalyst layer | 07-24-2014 |
20140364305 | EXHAUST GAS COMPONENT PURIFICATION CATALYTIC MATERIAL AND CATALYZED PARTICULATE FILTER WITH THE CATALYTIC MATERIAL - An exhaust gas component purification catalytic material | 12-11-2014 |