This paper compares 20% biodiesel (B20-choice white grease) fuel with baseline ultra low sulfur diesel (ULSD) fuel on the emissions and performance of a diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) coupled to a light duty four-cylinder 2.8-l common-rail DI diesel engine. The present paper focuses on the comparison of the fuel effects on loading and active regeneration of the DPF between B20 and ULSD. B20, in general, produces less soot and has lower regeneration temperature, compared with soot loaded with ULSD. concentrations before the DPF were found to be 6% higher with B20, indicating more availability of to oxidize the soot. Exhaust speciation of the availability indicates that the slight increase in from B20 is not the dominant cause for the lower temperature regeneration and faster regeneration rate, but the reactivity of the soot that is in the DPF. Formaldehyde concentrations are found to be higher with B20 during regeneration, due to increased oxygen concentrations in the exhaust stream. Finally, the oil dilution effect due to post injection to actively regenerate the DPF is also investigated using a prototype oil sensor and Fourier transform infrared (FTIR) instrumentation. Utilizing an active regeneration strategy accentuates the possibility of fuel oil dilution of the engine oil. The onboard viscosity oil sensor used was in good agreement with the viscosity bench test and FTIR analysis, and provided oil viscosity measurement over the course of the project. The operation with B20 shows significant fuel dilution and needs to be monitored to prevent engine deterioration.
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November 2010
Research Papers
Effects of B20 on Emissions and the Performance of a Diesel Particulate Filter in a Light-Duty Diesel Engine
Amy M. Peterson,
Amy M. Peterson
Wayne State University
, Detroit, MI 48164
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Po-I Lee,
Po-I Lee
Wayne State University
, Detroit, MI 48164
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Ming-Chia Lai,
Ming-Chia Lai
Wayne State University
, Detroit, MI 48164
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Ming-Cheng Wu,
Ming-Cheng Wu
Delphi Corporation
, Troy, MI 48326
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Craig L. DiMaggio,
Craig L. DiMaggio
Delphi Corporation
, Troy, MI 48326
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Simon Ng,
Simon Ng
Wayne State University
, Detroit, MI 48164
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Hiyang Tang
Hiyang Tang
Wayne State University
, Detroit, MI 48164
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Amy M. Peterson
Wayne State University
, Detroit, MI 48164
Po-I Lee
Wayne State University
, Detroit, MI 48164
Ming-Chia Lai
Wayne State University
, Detroit, MI 48164
Ming-Cheng Wu
Delphi Corporation
, Troy, MI 48326
Craig L. DiMaggio
Delphi Corporation
, Troy, MI 48326
Simon Ng
Wayne State University
, Detroit, MI 48164
Hiyang Tang
Wayne State University
, Detroit, MI 48164J. Eng. Gas Turbines Power. Nov 2010, 132(11): 112802 (8 pages)
Published Online: August 16, 2010
Article history
Received:
September 23, 2009
Revised:
October 7, 2009
Online:
August 16, 2010
Published:
August 16, 2010
Citation
Peterson, A. M., Lee, P., Lai, M., Wu, M., DiMaggio, C. L., Ng, S., and Tang, H. (August 16, 2010). "Effects of B20 on Emissions and the Performance of a Diesel Particulate Filter in a Light-Duty Diesel Engine." ASME. J. Eng. Gas Turbines Power. November 2010; 132(11): 112802. https://doi.org/10.1115/1.4001068
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