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The Effect of Ethanol Injection Strategy on Knock Suppression of the Gasoline/Ethanol Dual Fuel Combustion in a Spark-Ignited Engine
Technical Paper
2015-01-0764
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Ethanol is becoming more popular as a fuel component for spark-ignited engines. Ethanol can be used either as an octane enhancer of low RON gasoline or splash-blended with gasoline if a single injector is used for fuel injection. If two separate injectors are used, it is possible to inject gasoline and ethanol separately and the addition of ethanol can be varied on demand. In this study, the effect of the ethanol injection strategy on knock suppression was observed using a single cylinder engine equipped with two port fuel injectors dedicated to each side of the intake port and one direct injector. If the fuel is injected to only one side of the intake port, it is possible to form a stratified charge. The experiment was conducted under a compression ratio of 12.2 for various injection strategies. From the experimental results, it was found that injecting ethanol to the left side only of the intake port while both intake valves were open required approximately 52.1% (at 1500rpm) or 60.6% (at 2000rpm) less ethanol compared to the case in which ethanol is injected to both sides of intake port while intake valves are closed under a similar level of knock frequency. Furthermore, the engine load was maintained to the same level.
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Citation
Cho, S., Kim, N., Chung, J., and Min, K., "The Effect of Ethanol Injection Strategy on Knock Suppression of the Gasoline/Ethanol Dual Fuel Combustion in a Spark-Ignited Engine," SAE Technical Paper 2015-01-0764, 2015, https://doi.org/10.4271/2015-01-0764.Also In
References
- US Energy Information Administration Monthly Energy Review http://www.eia.gov/totalenergy/data/monthly/ Aug. 2014
- Zhao , H. Advanced direct injection combustion engine technologies and development 1 Gasoline and gas engines Woodhead publishing New Delhi 2010
- Kunkel , S. , Zimmer , T. , and Wachtmeister , G. Friction Analysis of Oil Control Rings during Running-In SAE Int. J. Engines 5 3 747 758 2012 10.4271/2011-01-2428
- Szybist , J. , Foster , M. , Moore , W. , Confer , K. et al. Investigation of Knock Limited Compression Ratio of Ethanol Gasoline Blends SAE Technical Paper 2010-01-0619 2010 10.4271/2010-01-0619
- Li , L. , Liu , Z. , Wang , H. , Deng , B. et al. Combustion and Emissions of Ethanol Fuel (E100) in a Small SI Engine SAE Technical Paper 2003-01-3262 2003 10.4271/2003-01-3262
- Pana , C. , Negurescu , N. , Popa , M. , Cernat , A. et al. Aspects of the Use of Ethanol in Spark Ignition Engine SAE Technical Paper 2007-01-2040 2007 10.4271/2007-01-2040
- Silva , N. and Sodré , J. Using Additive to Improve Cold Start in Ethanol-Fuelled Vehicles SAE Technical Paper 2000-01-1217 2000 10.4271/2000-01-1217
- Rodrigues , A. and Alto , A. Cold Start System Development for Flex Fuel Vehicles SAE Technical Paper 2007-01-2595 2007 10.4271/2007-01-2595
- Sales , L. , Carvalho , M. , Oliveira , F. , and Sodre , J. Improving Cold Start Emissions from an Ethanol-Fuelled Engine through an Electronic Gasoline Injector SAE Technical Paper 2010-01-2131 2010 10.4271/2010-01-2131
- de Paula Júnior , G. and Sagiorato , R. Mapping Flex Fuel Fleet in Brazil Potentially Affected by Critical Conditions of Ethanol Cold Start and the Effects of a Fuel Heating Technology SAE Technical Paper 2009-36-0260 2009 10.4271/2009-36-0260
- Stein , R. , House , C. , and Leone , T. Optimal Use of E85 in a Turbocharged Direct Injection Engine SAE Int. J. Fuels Lubr. 2 1 670 682 2009 10.4271/2009-01-1490
- Jung , H. , Leone , T. , Shelby , M. , Anderson , J. et al. Fuel Economy and CO2 Emissions of Ethanol-Gasoline Blends in a Turbocharged DI Engine SAE Int. J. Engines 6 1 422 434 2013 10.4271/2013-01-1321
- Cohn , D.R. , Bromberg , L. , Heywood , J.B. Direct Injection Ethanol Boosted Gasoline Engines: Biofuel Leveraging For Cost Effective Reduction of Oil Dependence and CO2 Emissions Cambridge, MA 02139 Massachusetts Institute of Technology 2005
- Zhuang , Y. and Hong , G. Investigation to Leveraging Effect of Ethanol Direct Injection (EDI) in a Gasoline Port Injection (GPI) Engine SAE Technical Paper 2013-01-1322 2013 10.4271/2013-01-1322
- Zhuang , Y. and Hong , G. The Effect of Direct Injection Timing and Pressure on Engine Performance in an Ethanol Direct Injection Plus Gasoline Port Injection (EDI+GPI) SI Engine SAE Technical Paper 2013-01-0892 2013 10.4271/2013-01-0892
- Kim , N. , Cho , S. , Choi , H. , Song , H. et al. The Efficiency and Emission Characteristics of Dual Fuel Combustion Using Gasoline Direct Injection and Ethanol Port Injection in an SI Engine SAE Technical Paper 2014-01-1208 2014 10.4271/2014-01-1208
- Li , Y. , Zhao , H. , and Ma , T. Stratification of fuel for better engine performance Fuel 85 4 465 473 2006 10.1016/j.fuel.2005.08.005
- Sinnamon , J. and Sellnau , M. A New Technique for Residual Gas Estimation and Modeling in Engines SAE Technical Paper 2008-01-0093 2008 10.4271/2008-01-0093
- Heywood , J.B. Internal Combustion Engine Fundamentals 1988 McGraw-Hill
- Wu , X. , Daniel , R. , Tian , G. , Xu , H. et al. Dual-injection: the flexible, bi-fuel concept for spark-ignition engines fuelled with various gasoline and biofuel blends Applied Energy 88 7 2305 2314 2011 10.1016/j.apenergy.2011.01.025
- Daniel , R. , Wang , C. , Xu , H. , Tian , G. et al. Dual-Injection as a Knock Mitigation Strategy Using Pure Ethanol and Methanol SAE Int. J. Fuels Lubr. 5 2 772 784 2012 10.4271/2012-01-1152
- AVL, IndiCom (Version 2.0), Computer Software AVL List GmbH Graz, Austria 2007