A New After-treatment Concept of Diesel Exhaust Gas Using Barrier Discharge Reactor Combined with Diesel Particulate Filter Hanoi Univ. of Science and Technology

Format:

Conference/Event

Author/Creator:

Trân Trân, author.

Contributor:

Arai, Masataka

Conference Name:

Asia Pacific Automotive Engineering Conference (2013-04-01 : Bangkok, Thailand)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

For diesel vehicles, NOx aftertreatment systems havebecome increasingly important, since the emission legislationscontinuously tightened. However, particulate matters (PM) andNOx aftertreatment systems have an impact on the engineoperation and fuel penalties. Therefore, it is necessary either tofind some auxiliary systems to decrease this impact or to find somebrand new deNOx aftertreatment systems. In theliterature, most research works concerning NOx and PMemission elimination using non-thermal plasma was conducted byemploying either a dielectric barrier discharge (DBD) reactor aloneor a plasma-assisted catalysis working under high temperaturecondition (over 150°C). Although there have been evidences thatnon-thermal plasma decomposes diesel PM but its mechanism is stillnot clear.In this paper, the simplified model for laboratory experimentsconsists of a wire-to-cylinder DBD reactor combined with a DPF wasused to investigate NOx removal characteristics. The DPFputting in the discharge field has two functions: a PM filter and adielectric barrier. A simulation gas of N₂, NO and O₂ combined withPM was used as the test gas. The results showed that PM promotedNOx removal reactions in the barrier discharge field butits effect was dropped following elapsed time. Through this study,two new definitions of "Fresh PM" and "Aged PM"are used to explain the significant effect of PM on NOxremoval process. Besides, the chemical reaction mechanism insidereactor was discussed. From the obtained results, a novel catalystconcept for diesel exhaust aftertreatment is suggested

Notes:

Vendor supplied data

Publisher Number:

2013-01-0012

Access Restriction:

Restricted for use by site license