Journal
COMBUSTION AND FLAME
Volume 161, Issue 1, Pages 270-279Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.combustflame.2013.07.018
Keywords
In-cylinder thermometry; Charge cooling; Alcohol-gasoline blends; GDI engines
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Funding
- Engineering and Physical Science Research Council (EPSRC) UK
- EPSRC
- B.P.
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The first application of Laser Induced Thermal Gratings Spectroscopy (LITGS) for precision thermometry in a firing GDI optical engine is reported. Crank-angle resolved temperature values were derived from LITGS signals generated in fuel vapour with a pressure dependent precision in the range 0.1-1.0% allowing differences in evaporative or charge cooling effects arising from a variety of ethanol and methanol blends with a model gasoline fuel to be quantified. In addition, fluctuations in temperature arising from cyclic variations in compression were directly detected and measured. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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