This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Using Oxygenated Gasoline Surrogate Compositions to Map RON and MON
Technical Paper
2014-01-1303
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Gasoline fuels are complex mixtures which consist of more than 200 different hydrocarbon species. In order to decrease the chemical and physical complexity, oxygenated surrogate components were used to enhance the fundamental understanding of partially premixed combustion (PPC). The ignition quality of a fuel is measured by octane number. There are two methods to measure the octane number: research octane number (RON) and motor octane number (MON). In this paper, RON and MON were measured for a matrix of n-heptane, isooctane, toluene, and ethanol (TERF) blends spanning a wide range of octane number between 60.6 and 97. First, regression models were created to derive RON and MON for TERF blends. The models were validated using the standard octane test for 17 TERF blends. Second, three different TERF blends with an ignition delay (ID) of 8 degrees for a specific operating condition were determined using a regression model. This was done to examine the model accuracy for ID and study fuel composition effect on combustion events and emissions.
The results showed a good agreement between predicted and tested RON and MON with an accuracy of ±0.6. The model also had high accuracy during extrapolation for some fuel blends. For toluene and reference fuel blend (TRF) the model was more accurate for MON than for RON, while the situation was the opposite for ethanol and reference fuel blend (ERF) i.e. the model worked better for RON than for MON during extrapolation. The ignition delay was similar for all three TERF blends despite the differences in their composition. However, high concentration of toluene resulted in higher levels of HC, NOx, and smoke emissions.
Citation
Solaka Aronsson, H., Tuner, M., and Johansson, B., "Using Oxygenated Gasoline Surrogate Compositions to Map RON and MON," SAE Technical Paper 2014-01-1303, 2014, https://doi.org/10.4271/2014-01-1303.Also In
References
- Speight James G. 2008 Synthetic Fuels Handbook McGRaw-Hill Companies
- Owen , K. and Coley , T. Automotive Fuels Reference Book Second Society of Automotive Engineers, Inc. Warrendale, PA 978-1-56091-589-8 1995
- Smallbone , A. , Morgan , N. , Bhave , A. , Kraft , M. et al. Simulating Combustion of Practical Fuels and Blends for Modern Engine Applications Using Detailed Chemical Kinetics SAE Technical Paper 2010-01-0572 2010 10.4271/2010-01-0572
- Pitz , W. , Cernansky , N. , Dryer , F. , Egolfopoulos , F. et al. Development of an Experimental Database and Chemical Kinetic Models for Surrogate Gasoline Fuels SAE Technical Paper 2007-01-0175 2007 10.4271/2007-01-0175
- Morgan Neal , Smallbone Andrew , Bhave Amit , Kraft Markus , Cracknell Roger , Kalghatgi Gautam Mapping surrogate gasoline compositions into RON/MON space Combustion and Flame 157 6 June 2010 1122 1131 0010-2180
- Mehl Marco , Pitz William J. , Westbrook Charles K. , Curran Henry J. Kinetic modeling of gasoline surrogate components and mixtures under engine conditions Proceedings of the Combustion Institute 33 1 2011 193 200 1540-7489 http://dx.doi.org/10.1016/j.proci.2010.05.027
- Kosaki , H. , Yamashita , A. , Adnin bin Hamidi , M. , and Tezaki , A. Chemical Kinetic Mechanism of Compression Ignition Derived from Intermediate Species for PRF and Toluene/n-Heptane Fuel Systems SAE Int. J. Fuels Lubr. 5 1 28 33 2011 10.4271/2011-01-1784
- Koopmans , L. , Strömberg , E. , and Denbratt , I. The Influence of PRF and Commercial Fuels with High Octane Number on the Auto-ignition Timing of an Engine Operated in HCCI Combustion Mode with Negative Valve Overlap SAE Technical Paper 2004-01-1967 2004 10.4271/2004-01-1967
- Solaka , H. , Tuner , M. , and Johansson , B. Investigation on impact of fuel properties on partially premixed combustion characteristics in a light duty diesel engine ASME Technical Paper 2012-0-81184 2012
- Stradling , R. , Antunez Martel , F-J. et al. Volatility and vehicle drivability performance of ethanol/gasoline blends: a literature review 2009 CONCAWE, Brussels, report no. 8/09 ec.europa.eu/energy/renewables/studies
- Solaka , H. , Tuner , M. , and Johansson , B. Analysis of Surrogate Fuels Effect on Ignition Delay and Low Temperature Reaction during Partially Premixed Combustion SAE Technical Paper 2013-01-0903 2013 10.4271/2013-01-0903
- Solaka , H. , Tuner , M. , Johansson , B. , and Cannella , W. Gasoline Surrogate Fuels for Partially Premixed Combustion, of Toluene Ethanol Reference Fuels SAE Technical Paper 2013-01-2540 2013 10.4271/2013-01-2540
- Truedsson , I. , Tuner , M. , Johansson , B. , and Cannella , W. Pressure Sensitivity of HCCI Auto-Ignition Temperature for Gasoline Surrogate Fuels SAE Technical Paper 2013-01-1669 2013 10.4271/2013-01-1669
- Andersson , Ö. Experiment: Planning, Implementing and Interpreting First John Wiley & Sons, Ltd 2012
- Kee , S. , Mohammadi , A. , Kidoguchi , Y. , and Miwa , K. Effects of Aromatic Hydrocarbons on Fuel Decomposition and Oxidation Processes in Diesel Combustion SAE Technical Paper 2005-01-2086 2005 10.4271/2005-01-2086
- Xioa , Z. , Ladommatos , N. , Zhao , H. The Effect of Aromatic Hydrocarbons and Oxygenates on Diesel Engine Emissions Journal of Automobile Engineering March 1 2000 214 3 307 332 10.1243/0954407001527448
- Svensson , K. , Richards , M. , Mackrory , A. , and Tree , D. Fuel Composition and Molecular Structure Effects on Soot Formation in Direct-Injection Flames Under Diesel Engine Conditions SAE Technical Paper 2005-01-0381 2005 10.4271/2005-01-0381