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Diesel Particulate Filter-Related Fuel Efficiency Improvements Using Biodiesel Blends in Conjunction With Advanced Aftertreatment Sensing and Controls

[+] Author Affiliations
Alexander Sappok, Paul Ragaller, Leslie Bromberg

Filter Sensing Technologies, Inc., Malden, MA

Vitaly Prikhodko, John Storey, James Parks, II

Oak Ridge National Laboratory, Knoxville, TN

Paper No. ICEF2015-1146, pp. V002T04A011; 10 pages
  • ASME 2015 Internal Combustion Engine Division Fall Technical Conference
  • Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development
  • Houston, Texas, USA, November 8–11, 2015
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 978-0-7918-5728-1
  • Copyright © 2015 by ASME


It is well known that biodiesel may reduce engine-out particulate matter (PM) emissions and result in PM which has more favorable oxidation characteristics relative to PM derived solely from petroleum diesel. This study investigated the use of neat biodiesel, as well as blends, with a light-duty diesel engine equipped with a catalyzed diesel particulate filter (DPF) and radio frequency particulate filter sensor. The results show a reduction in engine-out PM emissions with increasing biodiesel blend levels and a corresponding increase in the duration between DPF regenerations. In situ measurements of the PM oxidation rates on the DPF using the radio frequency sensor further indicated more rapid oxidation of the biodiesel-derived PM with lower light-off temperatures relative to the petroleum-derived PM. The conclusions indicate considerable potential to extend DPF regeneration intervals and decrease regeneration duration when biodiesel blends are used in conjunction with advanced DPF sensing and control systems, thereby reducing the DPF-related fuel consumption.

Copyright © 2015 by ASME



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