Observation of Soot Accumulation Conditions in Diesel Particulate Filter and Gas Flow Analysis

2002 ◽  
Author(s):  
Makoto Nagata ◽  
Yasuyuki Banno ◽  
Reiko Kimura ◽  
Koichiro Maki
Keyword(s):  
Diesel Particulate Filter ◽  
Gas Flow ◽  
Flow Analysis ◽  
Particulate Filter ◽  
Diesel Particulate

Visualization of the Gas Flow Field within a Diesel Particulate Filter Using Magnetic Resonance Imaging

2015 ◽  
Author(s):  
Andrew P. E. York ◽  
Timothy C. Watling ◽  
Nicholas P. Ramskill ◽  
Lynn F. Gladden ◽  
Andrew J. Sederman ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Flow Field ◽  
Diesel Particulate Filter ◽  
Gas Flow ◽  
Particulate Filter ◽  
Resonance Imaging ◽  
Diesel Particulate ◽  
Gas Flow Field

scholarly journals Magnetic resonance velocity imaging of gas flow in a diesel particulate filter

2017 ◽  
Vol 158 ◽  
pp. 490-499 ◽  
Author(s):  
Nicholas P. Ramskill ◽  
Andrew P.E. York ◽  
Andrew J. Sederman ◽  
Lynn F. Gladden
Keyword(s):  
Magnetic Resonance ◽  
Diesel Particulate Filter ◽  
Gas Flow ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Velocity Imaging

Comparative analysis on the effects of diesel particulate filter and selective catalytic reduction systems on a wide spectrum of chemical species emissions

2018 ◽  
Author(s):  
Z. Gerald Liu ◽  
Devin R. Berg ◽  
Thaddeus A. Swor ◽  
James J. Schauer‡
Keyword(s):  
Diesel Engine ◽  
Selective Catalytic Reduction ◽  
Diesel Particulate Filter ◽  
Catalytic Reduction ◽  
Wide Spectrum ◽  
Chemical Species ◽  
Pollutant Emissions ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Aftertreatment Systems

Two methods, diesel particulate filter (DPF) and selective catalytic reduction (SCR) systems, for controlling diesel emissions have become widely used, either independently or together, for meeting increasingly stringent emissions regulations world-wide. Each of these systems is designed for the reduction of primary pollutant emissions including particulate matter (PM) for the DPF and nitrogen oxides (NOx) for the SCR. However, there have been growing concerns regarding the secondary reactions that these aftertreatment systems may promote involving unregulated species emissions. This study was performed to gain an understanding of the effects that these aftertreatment systems may have on the emission levels of a wide spectrum of chemical species found in diesel engine exhaust. Samples were extracted using a source dilution sampling system designed to collect exhaust samples representative of real-world emissions. Testing was conducted on a heavy-duty diesel engine with no aftertreatment devices to establish a baseline measurement and also on the same engine equipped first with a DPF system and then a SCR system. Each of the samples was analyzed for a wide variety of chemical species, including elemental and organic carbon, metals, ions, n-alkanes, aldehydes, and polycyclic aromatic hydrocarbons, in addition to the primary pollutants, due to the potential risks they pose to the environment and public health. The results show that the DPF and SCR systems were capable of substantially reducing PM and NOx emissions, respectively. Further, each of the systems significantly reduced the emission levels of the unregulated chemical species, while the notable formation of new chemical species was not observed. It is expected that a combination of the two systems in some future engine applications would reduce both primary and secondary emissions significantly.

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