1
Kojima Masaaki, Taoka Noriyuki, Oshimi Yukio: Filter with catalyst, method for manufacturing the same and exhaust gas control system. Ibiden, May 27, 2003: JP2003-154223 (39 worldwide citation)

PROBLEM TO BE SOLVED: To provide a filter with a catalyst which shows no change in the romoval rate of soot even when regeneration of the filter is repeated for certain times but can reduce a noble metal catalyst and which has low pressure loss.SOLUTION: The ceramic filter has a honeycomb structure ...


2
Nakajima Yasuo, Oguri Takeji, Kwioda Hiroshi: Air-pollution preventive arrangement. Nissan Motor Company, Depaoli & O Brien, July 30, 1974: US3826089 (39 worldwide citation)

An air-pollution preventive arrangement for use with an internal combustion engine for motor vehicles, adapted to reduce the concentrations of noxious compounds such as unburned hydrocarbons and carbon-monoxides contained in the engine exhaust gases. The arrangement comprises a thermal reactor for p ...


3
Hirota Shinya, Seto Satomi, Takeshima Shinichi: Nitrogen oxides decreasing apparatus for internal combustion engine.. Toyota Motor, May 5, 1993: EP0540280-A1 (37 worldwide citation)

In an exhaust purification apparatus of an internal combustion engine having an NOx adsorption and release material (2) in an exhaust conduit (6), a heater (24) is provided close to the NOx adsorption and release material (2). When an NOx adsorption operation continues for a predetermined period, th ...


4
Kikuchi Hiroto, Nakamura Masaki, Sekiba Toru, Suga Katsuo: Catalyst for purifying exhaust gas, and method for producing it. Nissan Motor, December 7, 2006: JP2006-326554 (35 worldwide citation)

PROBLEM TO BE SOLVED: To provide a catalyst for purifying an exhaust gas whose process, time and cost to produce are simple, short and inexpensive respectively, and whose noble metal particles do not agglomerate and become coarse particles even if the catalyst is exposed to an oxidative atmosphere a ...


5
Yamamoto Toshio, Suda Akihiko: Manufacturing method of porous composite metal oxide material. Toyota Central Res &Amp Dev Lab, February 22, 2007: JP2007-044585 (34 worldwide citation)

PROBLEM TO BE SOLVED: To provide a method of obtaining efficiently a porous composite metal oxide material useful as a catalyst for purifying exhaust gas, or the like, which is extremely excellent in durability for high temperature, and in which even under high temperatures a specific surface area a ...


6
Muramatsu Gyo, Sumiya Satoshi, Yoshida Kiyohide: Exhaust gas purification catalyst. Riken, April 10, 1991: GB2236493-A (31 worldwide citation)

An exhaust gas is cleaned using a catalyst supported by a heat-resistant filter such as a cordierite honeycomb. The catalyst consists esssentially of Cs, Cu and at least one of Ce and La for oxidizing fine carbonaceous particles in the exhaust gas and simultaneously reducing nitrogen oxides with the ...


7
Jarvis Mottlene, Adams Karen Marie: Apparatus and method for treating exhaust gases from a diesel engine using nitrogen oxide absorbent. Ford Global Tech, August 16, 2000: EP1027919-A2 (27 worldwide citation)

The invention is a method and system for treating exhaust gases generated by a diesel engine by locating two catalyst components in the engine exhaust gas passage. The first catalyst component which is exposed to oxidizing diesel exhaust is located nearest to the engine and is a nitrogen oxide absor ...


8
Goto Masato, Iguchi Satoshi, Katoh Kenji, Kihara Tetsuro: An exhaust gas purification device for an engine.. Toyota Motor, February 16, 1994: EP0582917-A1 (27 worldwide citation)

An engine comprising an exhaust passage having therein a NOx absorbent which absorbs the NOx when the air-fuel ratio of the exhaust gas flowing into the NOx absorbent is lean and releases the absorbed NOx when the air-fuel ratio of the exhaust gas flowing into the NOx absorbent becomes the stoichiom ...


9
Pfeifer Marcus Dr, Spurk Paul Dr, Gieshoff Juergen Dr, Demel Yvonne, Lox Egbert Dr, Kreuzer Thomas Dr: Process and device for the selective catalytic reduction of nitrogen oxides in oxygen-rich exhaust gas. Omg & Co Kg, May 8, 2002: EP1203611-A1 (25 worldwide citation)

The invention provides an exhaust gas treatment unit for the selective catalytic reduction of nitrogen oxides under lean exhaust gas conditions which contains at least one catalyst with catalytically active components for selective catalytic reduction (SCR components). The exhaust gas treatment unit ...


10
Schaefer Sindlinger Adolf Dr, Pfeifer Marcus Dr, Spurk Paul Dr, Demel Yvonne, Kreuzer Thomas Dr, Lox Egbert Dr: Process for the selective reduction of nitrogen oxides. Dmc2 Degussa Metals Catalysts, October 24, 2001: EP1147801-A1 (25 worldwide citation)

Process for reducing nitrogen oxides contained in a lean exhaust gas of an IC engine comprises selectively reducing the nitrogen oxides using ammonia on a reduction catalyst containing a zeolite exchanged with transition metals. A part of the nitrogen monoxide is reduced to nitrogen dioxide before t ...