The homogeneous charge compression ignition (HCCI) combustion process is highly reliant upon a favorable in-cylinder thermal environment in an engine, for a given fuel. Commercial fuels can differ considerably in composition and autoignition chemistry; hence, strategies intended to bring HCCI to market must account for this fuel variability. To this end, a test matrix consisting of eight gasoline fuels comprised of blends made solely from refinery streams were run in an experimental, single cylinder HCCI engine. All fuels contained 10% ethanol by volume and were representative of a cross section of fuels one would expect to find at gasoline pumps across the United States. The properties of the fuels were varied according to research octane number (RON), sensitivity (S = RON-MON), and volumetric content of aromatics and olefins. For each fuel, a sweep of load (mass of fuel injected per cycle) was conducted and the intake air temperature was adjusted in order to keep the crank angle of the 50% mass fraction burned point (CA50) constant. By analyzing the amount of temperature compensation required to maintain constant combustion phasing, it was possible to determine the sensitivity of HCCI to changes in load for various fuels. In addition, the deviation of fuel properties brought about variations in important engine performance metrics like specific fuel consumption. Though the injected energy content per cycle was matched at the baseline point across the test fuel matrix, thermodynamic differences resulted in a spread of specific fuel consumption for the fuels tested.
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Research-Article
Impact of Refinery Stream Gasoline Property Variation on Load Sensitivity of the HCCI Combustion
Joshua S. Lacey,
Joshua S. Lacey
1
Graduate Student Research Assistant
W.E. Lay Automotive Laboratory,
Department of Mechanical Engineering,
Ann Arbor, MI 48109
e-mail: jslacey@umich.edu
W.E. Lay Automotive Laboratory,
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109
e-mail: jslacey@umich.edu
1Corresponding author.
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Zoran S. Filipi,
Zoran S. Filipi
Professor and Timken Chair in Vehicle System Design
International Center for Automotive Research,
Department of Mechanical Engineering,
Clemson, SC 29634
e-mail: zfilipi@clemson.edu
International Center for Automotive Research,
Department of Mechanical Engineering,
Clemson University
,Clemson, SC 29634
e-mail: zfilipi@clemson.edu
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Sakthish R. Sathasivam,
Sakthish R. Sathasivam
Graduate Student Research Assistant
Ann Arbor, MI 48109
e-mail: sakthish@gmail.com
University of Michigan
,Ann Arbor, MI 48109
e-mail: sakthish@gmail.com
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Richard J. Peyla,
Richard J. Peyla
Consulting Engineer
Chevron Energy Technology Company,
Richmond, CA 94802
e-mail: DickPeyla@chevron.com
Fuels and Advanced Combustion Technology
,Chevron Energy Technology Company,
Richmond, CA 94802
e-mail: DickPeyla@chevron.com
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Peter A. Fuentes-Afflick
Peter A. Fuentes-Afflick
Fuels Technology and Additives,
Richmond, CA 94802
e-mail: PFUE@chevron.com
Chevron Downstream Technology
,Richmond, CA 94802
e-mail: PFUE@chevron.com
Search for other works by this author on:
Joshua S. Lacey
Graduate Student Research Assistant
W.E. Lay Automotive Laboratory,
Department of Mechanical Engineering,
Ann Arbor, MI 48109
e-mail: jslacey@umich.edu
W.E. Lay Automotive Laboratory,
Department of Mechanical Engineering,
University of Michigan
,Ann Arbor, MI 48109
e-mail: jslacey@umich.edu
Zoran S. Filipi
Professor and Timken Chair in Vehicle System Design
International Center for Automotive Research,
Department of Mechanical Engineering,
Clemson, SC 29634
e-mail: zfilipi@clemson.edu
International Center for Automotive Research,
Department of Mechanical Engineering,
Clemson University
,Clemson, SC 29634
e-mail: zfilipi@clemson.edu
Sakthish R. Sathasivam
Graduate Student Research Assistant
Ann Arbor, MI 48109
e-mail: sakthish@gmail.com
University of Michigan
,Ann Arbor, MI 48109
e-mail: sakthish@gmail.com
Richard J. Peyla
Consulting Engineer
Chevron Energy Technology Company,
Richmond, CA 94802
e-mail: DickPeyla@chevron.com
Fuels and Advanced Combustion Technology
,Chevron Energy Technology Company,
Richmond, CA 94802
e-mail: DickPeyla@chevron.com
William Cannella
Peter A. Fuentes-Afflick
Fuels Technology and Additives,
Richmond, CA 94802
e-mail: PFUE@chevron.com
Chevron Downstream Technology
,Richmond, CA 94802
e-mail: PFUE@chevron.com
1Corresponding author.
Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 18, 2012; final manuscript received November 15, 2012; published online April 23, 2013. Assoc. Editor: Christopher J. Rutland.
J. Eng. Gas Turbines Power. May 2013, 135(5): 052803 (11 pages)
Published Online: April 23, 2013
Article history
Received:
June 18, 2012
Revision Received:
November 15, 2012
Citation
Lacey, J. S., Filipi, Z. S., Sathasivam, S. R., Peyla, R. J., Cannella, W., and Fuentes-Afflick, P. A. (April 23, 2013). "Impact of Refinery Stream Gasoline Property Variation on Load Sensitivity of the HCCI Combustion." ASME. J. Eng. Gas Turbines Power. May 2013; 135(5): 052803. https://doi.org/10.1115/1.4023028
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