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Mixture Formation and Combustion Evaluation of a Motorcycle Engine Concept Equipped with One Fuel Injector for Each Intake Valve
Technical Paper
2018-32-0009
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In light of a more stringent emission legislation and in anticipation of possible future measures to further reduce the real environmental impact of motorcycles, it is necessary to develop engine concepts which are efficient and low on emissions in a wide range of operating points. This poses an important challenge on the development of high performance motorcycles engines as their focus on full load behaviour conflicts sharply with the emission and efficiency demands of the remaining engine load map. The focus of this paper is to evaluate the potential of a port fuel injection (PFI) concept consisting of one individual fuel injector for each intake valve to solve this trade-off. Previous research shows a positive effect of such a setup on mixture formation due to better targeting and atomization, reducing HC emissions and cyclic variations. It also shows improved efficiency, performance and knocking characteristics caused by an enhanced charge cooling effect through open valve injection (OVI). Although the system has been previously investigated, the necessary layout considerations and impacts of the system for a high performance motorcycle engine have not yet been addressed. In this work the mentioned PFI concept was studied using a high performance two-cylinder motorcycle engine. Engine tests were conducted for two injector sets having different static flow values. The results showed improved efficiency and lower HC emissions for higher engine loads, but no performance gain at full load. The reasons for this behaviour were closely analysed by means of CFD simulation and thermodynamic loss analysis of the combustion process. These explanations were further confirmed by additional engine tests using exhaust gas sampling with fast FID. As a final result a set of recommendations for further concept improvement is proposed.
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Gaitan, P., Schwarz, F., and Eibl, R., "Mixture Formation and Combustion Evaluation of a Motorcycle Engine Concept Equipped with One Fuel Injector for Each Intake Valve," SAE Technical Paper 2018-32-0009, 2018, https://doi.org/10.4271/2018-32-0009.Data Sets - Support Documents
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References
- Ntziachristos , L. , Vonk , W. , Papadopoulos , G. , van Mensch , P. et al. 2017 10.2873/397876
- Hiesmayr , J. , Schmidt , S. , Hausberger , S. , Kirchberger , R. et al. Results, Assessment and Legislative Relevance of RDE and Fuel Consumption Measurements of Two-Wheeler-Applications SAE Technical Paper 2017-32-0042 2017
- TransportPolicy.net https://www.transportpolicy.net/standard/china-motorcycles-fuel-consumption/ 2018
- Heywood , J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill, Inc. 1988 205 007028637X
- Trzesniowski , M. Rennwagentechnik Wiesbaden Springer Vieweg 2014 592 10.1007/978-3-658-04919-5
- Wyszynski , L. , Stone , R. , and Kalghatgi , G. The Volumetric Efficiency of Direct and Port Injection Gasoline Engines with Different Fuels SAE Technical Paper 2002-01-0839 2002 10.4271/2002-01-0839
- McGee , J. , Curtis , E. , Russ , S. , and Lavoie , G. The Effects of Port Fuel Injection Timing and Targeting on Fuel Preparation Relative to a Pre-Vaporized System SAE Technical Paper 2000-01-2834 2000 10.4271/2000-01-2834
- Eichlseder , H. , Klüting , M. , and Piock , W.F. Grundlagen und Technologien des Ottomotors 2008 59 978-3-211-47104-3
- Hamada , M.
- Posselt , A. , Mai , A. , Leder , M. , Salvio , R. et al. Advanced PFI: The Economical, High Performance Systems Approach SAE Technical Paper 2015-36-0392 2015 10.4271/2015/36-0392
- Morishima , N , Doyama , M , Shibata , T and Yasuda , S Development of HR Improvement Engine Which Adopted Dual Injector System 2010 JSAE Annual Congress(Autumn) Proceedings 110 10 11 14 2010
- Shibata , H. , Mizobuchi , T. , Iwamuro , M. , Koda , A. et al. New Spray Concept Development for Dual Injection System SAE Technical Paper 2017-01-0835 2017 10.4271/2017-01-0835
- Begg , S.M. , Heikal , M.R. , and Lourenco Cardosa , T.P. The Mixture Response of a Stratified Charge Gasoline Engine with Independent, Twin, Port-Fuel Injector Control SAE Technical Paper 2010-01-1458 2010 10.4271/201-01-1458
- Lourenco Cardosa , T.P. 2011
- Cambustion Ltd. 2011
- Finlay , I.C. , Boam , D.J. , Bingham , J.F. , and Clark , T.A. Fast Response Measurement of Unburned Hydrocarbons in the Exhaust Port of a Firing Gasoline Engine SAE Technical Paper 902165 1990 10.4271/902165
- Mincione , G. 2013
- Dukowicz , J.K. A Particle-Fluid Numerical Model for Liquid Sprays J. Comp. Physics 35 229 253 1980
- O’Rourke , P.J. and Amsden , A.A. The Tab Method for Numerical Calculation of Spray Droplet Breakup SAE Technical Paper 872089 1987 10.4271/872089
- Chryssakis , C.A. , Assanis , D.N. , and Tanner , F.X. Chapter 9 Atomization Models Handbook of Atomization and Sprays 2011 10.1007/978-1-4419-7264-4
- Kuhnke , D. 2004
- Forte , C. , Bianchi , G.M. , and Corti , E. Multicycle Simulation of the Mixture Formation Process of a PFI Gasoline Engine SAE Technical Paper 2011-01-2463 2011 10.4271/2011-01-2463
- Trattner , A. , Kupelwieser , F. , Pertl , P. et al. Analysis and Assessment of Working Processes of Small Displacement Engines 15th Conference The Working Process of the Internal Combustion Engine Graz 2015
- Trattner , A. , Kupelwieser , F. , Pertl , P. , Winkler , F. et al. Thermodynamic Limits of Efficiency Enhancement of Small Displacement Single-Cylinder Engines SAE Technical Paper 2015-32-0817 2015
- Jandl , S. , Pertl , P. , Schacht , H.J. , Schmidt , S. et al. Thermodynamic Loss Analysis of a High Power Motorcycle Engine with Focus on Alcohol Blended Fuels SAE Technical Paper 2017-32-0070 2017
- Pischinger , R. , Klell , M. , Sams , T. Thermodynamik der Verbrennungskraftmaschine - Der Fahrzeugantrieb 3-211-83679-9 2009
- Boam , D.J. , Finlay , I.C. , Biddulph , T.W. , Lee , R. et al. The Sources of Unburnt Hydrocarbon Emissions from Spark Ignition Engines During Cold Starts and Warm-up Journal of Automotive Engineering 1992