Patent application number | Description | Published |
20090277159 | Selective Catalytic Reduction Using Controlled Catalytic Deactivation - An exhaust treatment control system includes a controller configured to determine a value representative of a NO | 11-12-2009 |
20090293463 | Exhaust system having thermophoretic particulate agglomerator - An exhaust system for use with a combustion engine is disclosed. The exhaust system may have a passage connected to receive exhaust from the combustion engine, and a cooling device located external to the passage to create a thermal gradient across a flow area of the passage that causes particulates within the exhaust to agglomerate on a wall of the passage. The exhaust system may also have a filtration device located to separate agglomerated particulates from the exhaust. | 12-03-2009 |
20110099996 | EXHAUST AFTERTREATMENT SYSTEM - An exhaust aftertreatment system for an engine is disclosed. The exhaust aftertreatment system including a first exhaust passage, an SCR catalyst disposed in the first exhaust passage, a second exhaust passage parallel with the first exhaust passage and fluidly coupled to the first exhaust passage upstream of the SCR catalyst and a container disposed in the second exhaust passage, the container configured to hold a volume of urea and to direct exhaust from the second exhaust passage through the volume of urea in the container. | 05-05-2011 |
20130152545 | DIESEL EISSION FLUID QUALITY DETECTION SYSTEM AND METHOD - An exhaust treatment system is provided including: a selective catalyst reduction (SCR) unit; a reducing agent dispensing unit configured to introduce a reducing agent into the exhaust; a first NO | 06-20-2013 |
20140075921 | POWER SYSTEM FOR CONTROLLING PHOSPHORUS AGING - A method of controlling a power system including an engine and an exhaust treatment system having an exhaust treatment device is disclosed. The method includes determining a catalyst parameter indicative of a conversion efficiency of the exhaust treatment device. The method further includes determining a weighted index based on the catalyst parameter. The method further includes determining a plurality of first index values. In the method, each first index value of the plurality of first index values is predicted as a function of a corresponding respective aftertreatment control strategy. The method further includes selecting an aftertreatment control strategy based on a comparison between the weighted index and each first index value of the plurality of first index values. In the method, the selected aftertreatment control strategy changes the catalyst parameter. The method also includes operating the exhaust treatment system according to settings corresponding to the selected aftertreatment control strategy. | 03-20-2014 |
20150075134 | SYSTEM AND METHOD FOR REDUCTANT INJECTION - A mixing chamber for an exhaust system is disclosed. The mixing chamber includes a tapering cross sectional area perpendicular to a longitudinal axis of the mixing chamber. The mixing chamber includes a first end having a first cross sectional area and a second end having a second cross sectional area. The second cross sectional area is less than the first cross sectional area. The second end is configured to receive an injector. The mixing chamber includes a first exhaust conduit fluidly connected to the first end of the mixing chamber and defining a first exhaust gas flow path into the mixing chamber substantially perpendicular to the longitudinal axis. The mixing chamber also includes a second exhaust conduit fluidly connected to the first end of the mixing chamber and defining a second exhaust gas flow path out of the mixing chamber substantially in the direction of the longitudinal axis. | 03-19-2015 |