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Computational Design Studies for a High-Efficiency and Low-Emissions Free Piston Engine Prototype
Technical Paper
2004-01-2928
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The current work is based on the computational design optimisation for a two-stroke, uniflow scavenging free piston engine prototype for use in series hybrid vehicles to reach high efficiency levels combined with low emissions. Here the performance goals have been attempted via Homogeneous Charge Compression Ignition (HCCI) Diesel combustion with increased levels of exhaust gas recirculation (EGR) and direct injection. For optimal mixture preparation and composition, a highly tuned gas exchange system is required and also adapted injection parameters are needed to induce heat release at around top dead center (TDC).
A computational methodology has been developed based on iterations between zero-, one-dimensional and simplified Computational Fluid Dynamics (CFD) simulations to define the operating conditions and overall geometrical parameters which give the best engine performance. Based on these findings, more detailed three-dimensional CFD calculations have been used to specify the optimal intake and exhaust port configurations and injection characteristics. They also serve as a basis for validation of the performance results from the iterations. It is demonstrated that an indicated efficiency of above 50% and low emission levels for soot and NOx can be ensured via a high compression ratio, elevated EGR rates and HCCI combustion using direct injection and early injection timing.
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Authors
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Citation
Kleemann, A., Dabadie, J., and Henriot, S., "Computational Design Studies for a High-Efficiency and Low-Emissions Free Piston Engine Prototype," SAE Technical Paper 2004-01-2928, 2004, https://doi.org/10.4271/2004-01-2928.Also In
References
- Carter D. Wechner E. The Free Piston Power Pack: Sustainable Power for Hybrid Electric Vehicles SAE Technical Paper 2003-01-3277 2003
- Goldsborough S.S. Van Blarigan P. Optimizing the Scavenging System for a Two-Stroke Cycle, Free Piston Engine for High Efficiency and Low Emissions: A Computational Approach SAE Technical Paper 2003-01-0001 2003
- Fredriksson J. Denbratt I Simulation of a Two-Stroke Free Piston Engine SAE Technical Paper 2004-01-1871 2004
- Shoukry E. Taylor S. Clark N. Famouri P. Numerical Simulation for Parametric Study of a Two-Stroke Direct Injection Linear Engine SAE Technical Paper 2002-01-1739 2002
- Goertz M. Peng L Free Piston Engine Its Application and Optimization SAE Technical Paper 2000-01-0996 2000
- Atkinson C.M. Petreanu S. Clark N.N. Atkinson R.J. McDaniel T.I. Nandkumar S. Famouri P. Numerical Simulation of a Two-Stroke Linear Engine-Alternator Combination SAE Technical Paper 1999-01-0921 1999
- Van Blarigan P. Paradiso N. Goldsborough S. Homogeneous Charge Compression Ignition with a Free Piston: A New Approach to Ideal Otto Cycle Performance SAE Technical Paper 982484 1998
- Heywood J.B. Internal Combustion Engine Automotive Technology Series McGraw-Hill Book Company New York 1988
- Hori H. Scavenging Flow Optimization of Two-Stroke Diesel Engine by Use of CFD SAE Technical Paper 2000-01-0903 2000
- Blair, G.P. The Basic Design of Two-Stroke Engines Society of Automotive Engineers, Inc. 1990
- Thring R.H. Homogeneous-Charge Compression Ignition Engine SAE Technical Paper 892068 1989
- Walter B. Gatellier B. Development of the High Power NADI Concept Using Dual Mode Diesel Combustion to Achieve Zero NOx and Particulate Emissions SAE Technical Paper 2002-01-1744 2002
- Shimazaki N. Tsurushima T. Nishimura T. Dual Mode Combustion Concept With Premixed Diesel Combustion by Direct Injection Near Top Dead Center SAE Technical Paper 2003-01-0742 2003
- Stanglmaier R.H. Roberts C.E. Homogeneous Charge Compression Ignition (HCCI): Benefits, Compromises, and Future Engine Applications SAE Technical Paper 1999-01-3682 1999
- Wagner U. Anca R. Velji A. Spicher U. An Experimental Study of Homogeneous Charge Compression Ignition (HCCI) with Various Compression Ratios, Intake Air Temperatures and Fuels with Port and Direct Fuel Injection SAE Technical Paper 2003-01-2293 2003
- Docquier N. Influence of Fresh Charge Preparation and Composition on Auto-Ignition Delays and Combustion Development in an Optical HCCI Direct Injection Diesel Engine SAE Technical Paper 2003-01-3174 2003
- Hasegawa R. Yanagihara H HCCI Combustion in DI Diesel Engine SAE Technical Paper 2003-01-0745 2003
- Christensen M. Hultqvist A. Johansson B. Demonstrating the multi-fuel capability of a homogeneous charge compression ignition engine with variable compression ratio SAE Technical Paper 1999-01-3679 1999
- Suzuki H. Koike N. Ishii H. Odaka M. Exhaust Purification of Diesel Engines by Homogeneous Charge with Compression Ignition - Part 1: Experimental Investigation of Combustion and Exhaust Emission Behavior Under Pre-Mixed Homogeneous Charge Compression Ignition Method SAE Technical Paper 970313 1997
- Blair G.P. Design and Simulation of Two-Stroke Engines Society of Automotive Engineers, Inc. 1996
- Habchi C. Torres A. A 3D multi-block structured version of the KIVA-2 code In proceedings of the First European CFD conference 1 502 512 1992
- Amsden A.A. O'Rourke P.J. Butler T.D. KIVA II: A Computer Program for Chemically Reactive Flows with Sprays Los Alamos National Laboratory May 1989
- Versteeg H.K. Malalasekera W An Introduction to Computational Fluid Dynamics - The Finite Volume Method Longman Scientific & Technical Essex 1995
- Colin O. Pires da Cruz A. Jay S. Detailed chemistry based auto-ignition model including low temperature phenomena applied to 3D engine calculations Presented at the 30 th Symposium (International) on Combustion The Combustion Institute 2004
- Lutz A. Kee R. Miller J. Senkin: A Fortran program for predicting homogeneous gas phase chemical kinetics with sensitivity analysis Sandia National Laboratories 1987
- Kee R.J. Rupley F.M. Miller J.A. Chemkin-II: A Fortran chemical kinetics package for the analysis of gas-phase chemical kinetics Sandia National Laboratories 1989
- Curran H.J. Gaffuri P. Pitz W.J. Westbrook C.K. A comprehensive modeling study of n-heptane oxidation Combustion and Flame 114 1-2 149 177 1998
- Colin O. Benkenida A The 3-Zones Extended Coherent Flame Model (ECFM3Z) for computing Premixed Diffusion Combustion Submitted to Oil & Gas Science and Technology 2004
- Martinot S. Beard P. Roesler J. Garo A. Comparison and Coupling of Homogeneous Reactor and Flamelet Library Soot Modeling Approaches for Diesel Combustion SAE Technical Paper 2001-01-3684 2001