This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling the Effect of Injection Schedule Change on Free Piston Engine Operation
Technical Paper
2006-01-0449
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In this study, the effects of varying the start of injection in a Free Piston Engine (FPE) have been investigated, using the KIVA-3V CFD code. In order to simulate the FPE the code has been modified by replacing the conventional crank shaft controlled piston motion by a piston motion profile calculated using a MATLAB/SIMULINK model. In this model, the piston motion is controlled by Newton's second law and the combustion process is represented by a simplified model based on ignition delay integrals and Wiebe functions. The results were tuned using predictions from the SENKIN software which are based on the detailed chemical kinetics mechanism of a Diesel oil surrogate represented by a blend of the main aliphatic (70% n-heptane) and aromatic (30% toluene) components. In order to help analyze the emission formation resulting from the HCCI/PPCI combustion modes in the engine, a special approach based on the temperature-equivalence ratio maps has been developed. Special attention was paid to predict a realistic initial flow field generated by ports and valves. The simulation results illustrate that by changing injection timing, the combustion process can be optimized, leading to high combustion efficiency and stable engine operation.
Recommended Content
Authors
Topic
Citation
Fredriksson, J., Bergman, M., Golovitchev, V., and Denbratt, I., "Modeling the Effect of Injection Schedule Change on Free Piston Engine Operation," SAE Technical Paper 2006-01-0449, 2006, https://doi.org/10.4271/2006-01-0449.Also In
References
- Achten, P. A Review of Free Piston Engine Concepts Innas B.V SAE paper 941776 1994
- Kleemann, A. P. Dabadie, J.-C. Henriot, S. Computational Design Studies for a High-Efficiency and Low-Emissions Free Piston Engine Prototype SAE Paper 2004-01-2928 2004
- Max, E. FPEC, Free Piston Energy Converter Proceedings of the 21 st Worldwide International Battery, Hybrid and Fuel Cell Vehicle Symposium & Exhibition (EVS 21) Monaco April 2-6 2005
- Amsden, A.A. KIVA-3V: A Block-structured KIVA Program for Engines with Vertical or Canted Valves July 1997
- Fredriksson, J. Denbratt, I. Simulation of a Two-Stroke Free Piston Engine SAE Paper 2004-01-1871 2004
- Nordin, N. Complex Chemistry Modeling of Diesel Spray Combustion Chalmers University Göteborg 2001
- Edman, J. Modeling Diesel Spray Combustion Using a Detailed Chemistry Approach Göteborg 2005
- Akihama, K. Takatori, Y. Inagaki, K. Sasaki, S. Dean, A. Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature SAE Paper 2001-01-0655 2001
- Kusaka, J. Horie, N. Daisho, Y. Golovitchev, V.I. Nakayama, S. Numerical Simulation Accounting for the Finite-rate Elementrary Chemical Reactions for Computing Diesel Combustion Process SAE paper 2005-24-051 2005
- Gustavsson, J. Golovitchev, V.I. 3D Simulations of Multiple Injections in DI Diesel Engine Paper A8-1, Proceedings of COMODIA 2004 August 2-5 Yokohama 167 2004
- Bayvel, L. Orzechowski, Z. Liquid Atomization Taylor & Francis Ltd 1993
- Bergman, M. Golovitchev, V.I. Chemical Mechanisms for Modeling HCCI with Gasoline and Diesel Oil Surrogates Proceedings of the VII. Congress on Engine Combustion Processes 323 334 Munchen March 15-16 2005
- Davidsson, D.F. Gautier, B.M. Hanson, R.K. Sick, V. Kiefer, J. Shock tube ignition measurements of iso-octane/air and toluene/air at high pressures Proceedings of the Combustion Institute 30 1175 1182 2005
- Kee, R.J. Rupley, F.M. Miller, J.A. Chemkin-II: A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Kinetics Sandia Report SAND89-8009B April 1992
- Ciezki, H. Adomeit, G. Shock-Tube Investigation of n-Heptane-Air-Mixtures under Engine Relevant Conditions Combustion and Flame 93 421 433 1993
- Magnussen, B.F. Hjertager, B.H. On the Numerical Modeling of Turbulent Combustion with Special Emphasis on Soot Formation and Combustion Sixteenth Symposium (International) on Combustion Pittsburg The Combustion Institute 719 729 1976
- Fredriksson, J. Bergman, M. Golovitchev, V.I. Numerical Simulation of a Free Piston Engine Using a Modified EDC Combustion Approach ECCOMAS Portugal 2005
- Golovitchev, V.I. Nordin, N. Jarnicki, R. Chomiak, J. 3-D Diesel Spray Simulations Using a New Detailed Chemistry Turbulent Combustion Model SAE paper 2000-01-1891 2000
- Warnatz, J. Maas, U. Dibble, R.W. Combustion Physical and Chemical Fundamentals, Modeling and Simulation Experiments, Pollutant Formation Springer-Verlag 1996
- Koss H.J. Brüggeman D. Wirtalla A. Bäcker H. Breuer A. Investigations of the influence of Turbulence and Type of Fuel on the Evaporation and Mixture Formation in Fuel Sprays 8:th Periodic Report IDEA 1992