About 41 results
https://drivepatents.com/patents/1001663 · 6 Jun 2012
In an internal combustion engine, inside an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. A first hydrocarbon feed method which injections hydrocarbons from the hydrocarbon feed valve (15) by ...
https://drivepatents.com/patents/1006502 · 4 Jan 2012
An internal combustion engine in an engine exhaust passage of which a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. On the exhaust purification catalyst (13), platinum Pt (51) is carried and a basic layer (53) is forme...
https://drivepatents.com/patents/1069052 · 22 Mar 2006
An exhaust gas cleaning method capable of maintaining an optimum NOx purification ratio in the continuously regenerative range of DPF in an exhaust gas cleaning system (1) having an NOx purification function and a PM purification function combined with eac...
https://drivepatents.com/patents/1069661 · 1 Mar 2006
A reformer system (100, 200) comprises a reformer catalyst capable of reforming a fuel to hydrogen and carbon monoxide, and a water gas shift catalyst in fluid communication with the reformer catalyst and in fluid communication with an exhaust gas source c...
https://drivepatents.com/patents/1072243 · 30 Nov 2005
Removing nitrogen oxides from the lean exhaust gas of an internal combustion engine by passing the gas through a nitrogen oxide storage catalyst and periodically denitrogenating the catalyst by enriching the exhaust gas comprises using an engine control un...
https://drivepatents.com/patents/1072523 · 16 Nov 2005
In an internal combustion engine, an exhaust passage is provided with a NOx storing and decomposing catalyst (20). When burning fuel under a lean air-fuel ratio, the nitrogen monoxide is adsorbed by the NOx storing and decomposing catalyst (20) and disasso...
https://drivepatents.com/patents/1075967 · 13 Jul 2005
Motor vehicle has an exhaust system including a hydrolysis catalyst supplied via a metering device (6) with a urea-water solution (UWS) stored in a UWS tank (9) comprising a prefabricated inner tank (26) that is inserted into the open front of a tank housi...
https://drivepatents.com/patents/1076336 · 29 Jun 2005
In an exhaust gas purifying system (1) that purifies NOx for the exhaust gas from an internal combustion engine (E) through sulfur purging control by a NOx occlusion reduction type catalyst (41), sulfur purging is judged to have started when the oxygen con...
https://drivepatents.com/patents/1082123 · 24 Nov 2004
An exhaust gas purification system for an internal combustion engine (1) can quickly recover the exhaust gas purification ability of an exhaust gas purification device (16) by increasing opportunities to release the SOx occluded in the exhaust gas purifica...
https://drivepatents.com/patents/1082825 · 27 Oct 2004
An exhaust gas cleaning system comprises sulfur oxide (SO x) occlusion amount estimation section (20a), exhaust air-fuel ratio control section (20b), sulfur oxide poisoning recovery section (20c) and hydrocarbon concentration detector (20d). When the sulfu...