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Method and apparatus for NO2-based regeneration of diesel particulate filters using recirculated NOx
Method and apparatus for NO2-based regeneration of diesel particulate filters using recirculated NOx
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机译:使用再循环NOx的基于NO 2的柴油机颗粒过滤器再生的方法和设备
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摘要
In a method for regenerating s catalyzed diesel particulate filter (DPF) via active NO2-based regeneration with enhanced effective NO2 supply, a NOx containing gas is introduced into the DPF, and a temperature of at least one of the DPF, the NOx containing gas, and soot in the DPF is controlled while control Sing NOx levels at an inlet of the DflF so that the NOx containing gas reacts with the catalyst to form N 02 molecules that thereafter react with soot particles to form CO, CO2, and NO molecules and a N02 efficiency is greater than 0.52 gC/gNO2 and so that less than two thirds of the soot mass that is removed from the DPF is oxidized by 02 molecules in the gas to form CO and CO2 molecules.
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