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Effect of Low Octane Gasoline on Performance of a HCCI Engine with the Blowdown Supercharging
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 2015 by SAE International in United States
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In this study, the effect of the low octane number fuel on HCCI engine performance was experimentally investigated using a slightly modified commercial four-cylinder gasoline engine. To operate the engine in HCCI strategy with wide operational range, the blowdwon supercharging (BDSC) system proposed by the authors was applied in the test engine. Research octane number (RON) of test fuels was varied from 90 to 78.5 as an experimental parameter. Experimental results showed that in the range of the present study, HCCI operational range, brake thermal efficiency and exhaust emissions during HCCI operation were little affected by the RON of the test fuels. In contrast, during SI operation, thermal efficiency was deteriorated with lower RON fuel because of knocking. In terms of “Well-to-Wheel” energy consumption, it is favorable to use gasoline without any additional treatment for increasing fuel octane number, because additional energy is necessary for increasing octane number of commercial gasoline. It is expected that the “Well-to-Wheel” CO2 emission can be reduced by application of high efficiency HCCI combustion into production engine operation with low octane number fuel.
CitationKuboyama, T., Goto, S., Moriyoshi, Y., Koseki, K. et al., "Effect of Low Octane Gasoline on Performance of a HCCI Engine with the Blowdown Supercharging," SAE Technical Paper 2015-01-1814, 2015, https://doi.org/10.4271/2015-01-1814.
- Shibata , G. , Oyama , K. , Urushihara , T. , and Nakano , T. Correlation of Low Temperature Heat Release With Fuel Composition and HCCI Engine Combustion SAE Paper No. 2005-01-0138 2005
- Sjöberg , M. and Dec , J. Combined Effects of Fuel-Type and Engine Speed on Intake Temperature Requirements and Completeness of Bulk-Gas Reactions for HCCI Combustion SAE Technical Paper 2003-01-3173 2003
- Bradley D. , and Head R. A. Engine Autoignition: The Relationship Between Octane Numbers and Autoignition Delay Times Combustion and Flame 147 3 171 184 2006
- Kuboyama , T. , Moriyoshi , Y. , Hatamura , K. , Takanashi , J. , Urata , Y. and Yamada , T. Extension of an Operating Load Range of a Four-Cylinder Gasoline HCCI engine via Blowdown Supercharging aiming at in-cylinder thermal stratification Int. J Engine Research 13 6 565 587 2012
- Kalaskar , V. , Splitter , D. , and Szybist , J. Gasoline-Like Fuel Effects on High-Load, Boosted HCCI Combustion Employing Negative Valve Overlap Strategy SAE Int. J. Fuels Lubr. 7 1 82 93 2014 10.4271/2014-01-1271
- Eng , J.A. Characterization of pressure waves in HCCI combustion SAE Technical Paper 2002-01-2859 2002