Model Based Study of DeNOx Characteristics for Integrated DPF/SCR System over Cu-Zeolite

Yang, Yangdongfang; Cho, Gyubaek; Rutland, Christopher J.

doi:10.4271/2015-01-1060

Cited by 11 publications

(11 citation statements)

References 20 publications

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“…However, high NO x conversion and high soot-filtration efficiency cannot often be accomplished simultaneously. Indeed, as reported by different authors [138][139][140], a soot-loaded SCRF ® , operated in the cake filtration regime, showed less NO conversion than a soot-free SCRF ® .…”

Section: Scr/dpf Combined Technologies For the Simultaneous Removal Omentioning

confidence: 52%

“…high NOx conversion and high soot-filtration efficiency cannot often be accomplished simultaneously. Indeed, as reported by different authors [138][139][140], a soot-loaded SCRF ® , operated in the cake filtration regime, showed less NO conversion than a soot-free SCRF ® . It is worth noting that the combination of DPF and SCR functionalities into a single device may result in problems, which are absent in separate devices; indeed, the operation of the 2-way DPF/SCR device ( Figure 14) might be different from that of conventional DPF and SCR, and the fuel penalty during filter regeneration must be taking into account.…”

Section: Scr/dpf Combined Technologies For the Simultaneous Removal Omentioning

confidence: 52%

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An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Castoldi

2020

Materials

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Vehicular pollution has become a major problem in urban areas due to the exponential increase in the number of automobiles. Typical exhaust emissions, which include nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), soot, and particulate matter (PM), doubtless have important negative effects on the environment and human health, including cardiovascular effects such as cardiac arrhythmias and heart attacks, and respiratory effects such as asthma attacks and bronchitis. The mitigation measures comprise either the use of clean alternative fuels or the use of innovative technologies. Several existing emission control technologies have proven effective at controlling emissions individually, such as selective catalytic reduction (SCR) and lean NOx trap (LNT) to reduce NOx and diesel particulate filter (DPF) specifically for PM abatement. These after-treatment devices are the most profitable means to reduce exhaust emissions to acceptable limits (EURO VI norms) with very little or no impact on the engine performances. Additionally, the relative lack of physical space in which to install emissions-control equipment is a key challenge for cars, especially those of small size. For this reason, to reduce both volume and cost of the after-treatment devices integrated catalytic systems (e.g., a sort of a “single brick”) have been proposed, reducing both NOx and PM simultaneously. This review will summarize the currently reported materials for the simultaneous removal of NOx and soot, with particular attention to their nature, properties, and performances.

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Section: Scr/dpf Combined Technologies For the Simultaneous Removal Omentioning

confidence: 52%

Section: Scr/dpf Combined Technologies For the Simultaneous Removal Omentioning

confidence: 52%

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Castoldi

2020

Materials

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“…On applying the simplification this system gets reduced to 2 equations ) (17) d(M 1 C p T gas(i,j) ) dt = u out(i,j−1) ρ g C p AT gas(i,j−1) − u out(i,j) ρ g C p AT gas(i,j) + h(T w(i,j) − T gas(i,j) )sdx (18) This approach will reduce the accuracy of the exhaust gas temperature by 4-5 % with speedup of 5 % compared to the previous set of equations.…”

Section: Appendix a Scr-f Configuration 1 Resultsmentioning

confidence: 99%

“…Yang et al [18] developed a 1D model for Cu-Ze SCR on a DPF. This study focused on effects of space velocity, temperature and local NO2/NOx ratio on clean and PM loaded filters.…”

Section: Figure 6 Radial No/no2 Profiles (Pm Cake and Substrate Wall)mentioning

confidence: 99%

Development of a High-Fidelity Model and Kalman Filter Based State Estimator for Simulation and Control of Nox Reduction Performance of a SCR Catalyst on a DPF

Chundru¹

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“…Yang et al [10] developed a 1D model for Cu-Ze SCR on a DPF. This study focused on the e↵ects of space velocity, temperature and local NO 2 /NO x ratio on clean and PM loaded filters.…”

Section: Scr-f Modelsmentioning

confidence: 99%

Development of a 2D SCR Catalyst on a Diesel Particulate Filter Model for Design and Control Applications to a Ultra Low NOx Aftertreatment System

Chundru¹

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Model Based Study of DeNOx Characteristics for Integrated DPF/SCR System over Cu-Zeolite

Cited by 11 publications

References 20 publications

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NOx and Soot

Development of a High-Fidelity Model and Kalman Filter Based State Estimator for Simulation and Control of Nox Reduction Performance of a SCR Catalyst on a DPF

Development of a 2D SCR Catalyst on a Diesel Particulate Filter Model for Design and Control Applications to a Ultra Low NOx Aftertreatment System

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