An Experimental and Computational Study of the Pressure Drop and Regeneration Characteristics of a Diesel Oxidation Catalyst and a Particulate Filter

Characteristics of Nitrogen Dioxide from A Diesel Methanol Dual Fuel Engine

“…The NO2 emission, NO2/NOX and NO2/PM downstream of the DOC are higher than that upstream of the DOC, except the temperature below 270°C under DMDF mode and the temperature below 170°C under pure diesel mode. Compared to pure diesel mode, the high NO2/PM at DMDF mode means that the good performance of passive regeneration can be achieved [4,8,9]. Figure 5 shows the effect of torques on the temperature both before and after the DOC at three kinds of MSRs.…”

“…The rare earth metals, such as cerium (Ce), praseodymium (Pr) and lanthanum (La), improve the activity of DOC, especially at low temperatures [6,7]. Triana et al [8] found that the performance of passive regeneration was superior with the DOC inlet temperature from 363°C to 500°C. The high temperatures (>500°C) reduced the NO2 concentration produced by DOC; and the low temperatures (<363°C) decreased the NO2/PM.…”

Experimental and Modeling Study of Particulate Matter Oxidation Under Loading Conditions for a SCR Catalyst on a Diesel Particulate Filter

“…Reference [25] reports order of 0.76 to 0.94 for O 2 whereas reference [26] reports order of 0.39 for O 2 in thermal oxidation of Printex-U. Zero order for NO 2 has been reported by reference [27] in NO 2 assisted oxidation at around 300 o C and an increasing dependence on NO 2 with temperature. In this study, a pseudo-first order reaction i.e.…”

“…27 shows the distribution of PM retained in the cake and the wall in terms of percentage of the total PM retained for all the tests. It is observed that the majority of PM is retained in the cake as seen inFigure 5.27.…”