Experimental studies of high efficiency combustion with fumigation of dme and propane into diesel engine intake air

Bhaskar Prabhakar, Srinivas Jayaraman, Randy Vander Wal, André Boehman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This work explores the role of the ignition quality of a fumigated fuel on combustion phasing and brake thermal efficiency (BTE), which was investigated in a 2.5L turbocharged common rail light-duty diesel engine. Different combinations of dimethyl ether (DME) and propane were fumigated into the intake air and displaced some of the directly injected ultra-low sulfur diesel fuel (ULSD) needed to maintain the engine and a constant speed and load. Fumigation of DME and propane significantly increased BTE and reduced brake specific energy consumption (BSEC) compared to the baseline diesel condition with no fumigation. A mixture of 20% DME with 30% propane provided the maximum BTE, with 24% reduction in BSEC, however, at the expense of increasing peak cylinder pressure by 6 bar, which was even higher at greater DME substitutions. Fumigated DME auto-ignited early, ahead of top dead center (TDC), showing the typical low temperature and high temperature heat release events and propane addition suppressed the early low temperature heat release (LTHR), shifting more of the DME heat release closer to TDC. Total hydrocarbon emissions increased while NOx emissions reduced with increasing fumigation.

Original languageEnglish (US)
Title of host publicationFuels; Numerical Simulation; Engine Design, Lubrication, and Applications
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791856109
DOIs
StatePublished - Jan 1 2013
EventASME 2013 Internal Combustion Engine Division Fall Technical Conference, ICEF 2013 - Dearborn, MI, United States
Duration: Oct 13 2013Oct 16 2013

Publication series

NameASME 2013 Internal Combustion Engine Division Fall Technical Conference, ICEF 2013
Volume2

Other

OtherASME 2013 Internal Combustion Engine Division Fall Technical Conference, ICEF 2013
CountryUnited States
CityDearborn, MI
Period10/13/1310/16/13

All Science Journal Classification (ASJC) codes

  • Automotive Engineering

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    Prabhakar, B., Jayaraman, S., Wal, R. V., & Boehman, A. (2013). Experimental studies of high efficiency combustion with fumigation of dme and propane into diesel engine intake air. In Fuels; Numerical Simulation; Engine Design, Lubrication, and Applications (ASME 2013 Internal Combustion Engine Division Fall Technical Conference, ICEF 2013; Vol. 2). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/ICEF2013-19259