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Investigations of Port Dual Injection (PDI) Strategies in Single Cylinder SI Engine Fueled with Ethanol/Gasoline Blends
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
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Novel port dual-injection (PDI) strategy helps to utilize bio-fuels, improve the performance and lower the emissions with higher mass fractions of bio-fuels. PDI strategy in SI engine allows intake manifold blending of two different fuels at any blend ratio. This paper presents the numerical study of PDI strategy using a single cylinder SI Ricardo E6 research engine. The objective of this study is to extend predictive fractal combustion model for ethanol/gasoline blends and assess the influence of ethanol (E10 to E50 mass fractions) addition to gasoline in a PDI engine. Quasi dimensional simulation is carried out using AVL Boost under wide open throttle condition at 1500 rpm. AVL Boost engine model is validated for gasoline and ethanol/gasoline pre-blends port fuel injection (PFI) with the experimental data of published literature obtained for the same engine. PDI strategies- Distance-Injection and Close-to-valve Injection have been applied to assess the extent of the improvements obtained through spark timing optimization. The performance, combustion and emissions characteristic of different ethanol/gasoline blends have been compared between the pre-blend PFI strategy and the PDI equivalent. Maximum improvement in Brake Power is 7 percentage points with PDI. Maximum increase in Indicated efficiency is 4.5 percentage points. Effective Octane Number is enhanced in the range of 7 to 10 units for above blend ratios with PDI. With PDI 6 and 12.5 percentage points decrease in NOx and HC emissions respectively are observed in comparison to pre-blend PFI whereas no appreciable change in CO emissions. PDI strategies shows overall superior results in terms of performance and emission in comparison to gasoline and pre-blendPFI using single injector.
CitationTrimbake, S. and Malkhede, D., "Investigations of Port Dual Injection (PDI) Strategies in Single Cylinder SI Engine Fueled with Ethanol/Gasoline Blends," SAE Technical Paper 2016-01-0573, 2016, https://doi.org/10.4271/2016-01-0573.
- 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, doi:10.4271/2012-01-1152.
- Venugopal, T., Ramesh, A., “Experimental studies on the effect of Injection Timing in a SI Engine using Dual Injection of n-Butanol and Gasoline in the intake port”, Fuel,Vol.115, 295-305, 2014doi:10.1016/j.fuel.2013.07.013.
- Stelmasiak, Z., andSemikow, J., “The Possibilities ofImprovement of Spark Ignition Engine Efficiency through Dual Fueling of Methanol and Gasoline.” PTNSS-2010- SS3-305.
- Larse, U., Johansen, T. and Schramm, “Ethanol as a Fuel for Road Transportation”, Main Report, TechnicalUniversity of Denmark, May -2009.
- Masum, B., Masjuki,H., Kalam, M., Rizwanul I., et al., “Effect of Ethanol-Gasoline Blend on NOx Emission in SI engine”, Renewable and Sustainable Energy Reviews 24, 209-222, 2013,Doi:10.1016/j.rser.2013.03.046.
- Bromberg, L., Cohn, R., Heywood, J.,“Alcohol Boosted Turbo Gasoline Engines”, Topic Paper No4, White Paper for National Petroleum Council (NPC) Study, March 2, 2012
- 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 Bio-fuel Blends,”Applied Energy Vol88(7),2305-2314, 2011 doi:10.1016/j.apenergy.2011.01.025
- Kar, K., Cheng, W., and Ishii, K., "Effects of Ethanol Content on Gasohol PFI Engine Wide-Open-Throttle Operation," SAE Int. J. Fuels Lubr. 2(1):895-901, 2009, doi:10.4271/2009-01-1907.
- AVL-List GmbH: BOOST v.2011 User Guide; Hans-List-Platz 1, A-8020 Graz, Austria (2011).
- Bozza, F., Gimelli, A., Merola, S., and Vaglieco, B., "Validation of a Fractal Combustion Model through Flame Imaging," SAE Technical Paper 2005-01-1120, 2005, doi:10.4271/2005-01-1120.
- Regner, G., Teng, H., Van Wieren, P., Park, J. et al., "Performance Analysis and Valve Event Optimization for SI Engines Using Fractal Combustion Model," SAE Technical Paper 2006-01-3238, 2006, doi:10.4271/2006-01-3238.
- Rivas, M., Higelin, P., Caillol, C., Sename, O. et al., "Validation and Application of a New 0D Flame/Wall Interaction Sub Model for SI Engines," SAE Int. J. Engines 5(3):718-733, 2012, doi:10.4271/2011-01-1893.
- De Bellisa Vincenzo, Severib Elena, Fontanesib Stefano, BozzaFabio, “Hierarchical 1D/3D Approach for the Development of aTurbulent Combustion Model Applied to a VVA Turbocharged Engine. Part I: Turbulent Model”, Energy Procedia, Vol 45, 829-838, 2014, doi:10.1016 / j.egypro . 2014.01.088
- AVL-List GmbH: BOOST v.2011 Theory; Hans-List-Platz 1, A- 8020 Graz, Austria (2011).
- Ricardo E6 engine user manual, Ricardo Company, 1980.
- Maji, S., Sharma, P., and Babu, M., "A Comparative Study of Performance and Emission Characteristics of CNG and Gasoline on a Single Cylinder S. I. Engine," SAE Technical Paper 2004-28-0038, 2004, doi:10.4271/2004-28-0038.
- Ranasinghe, C.,Malalasekera, W., “Simulation of Premixed Combustion and Near Wall Flame Quenching in Spark Ignition Engines with an Improved Formulation of the Bray-Moss-Libby Model” HEFAT 2012.
- Ranasinghe, C.,Malalasekera, W., “Simulation of Engine Combustion with Ethanol as a Renewable Fuel” Int. Conf. on Adv. Mat. Sci. and Engg., Colombo, July 01-04, 2012.
- Kasseris, E. and Heywood, J., "Charge Cooling Effects on Knock Limits in SI DI Engines Using Gasoline/Ethanol Blends: Part 1-Quantifying Charge Cooling," SAE Technical Paper 2012-01-1275, 2012, doi:10.4271/2012-01-1275.
- Sai Yashwanth, M., Venugopal, T. and Ramesh, A., “Experimental and Simulation Studies to Determine theEffective Octane Number in an Engine Fuelled with Ethanol and Gasoline”, Int. J. of Automotive and Mechanical Engineering, Vol. 10, 2057-2069, 2014,doi:10.15282/ijame.10.2014.22.0173