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Development Work on the Synthesis of a Variable Stroke Slider-Crank Mechanism for a Variable Compression Ratio Combustion Engine
Technical Paper
2021-01-0653
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE WCX Digital Summit
Language:
English
Abstract
The subject of control of compression and stroke in engines is still a very contemporary research topic, and there is room for research in this matter, as can be asserted from the literature reviewed. In this paper, we report on the systematic methodology followed to perform the synthesis of a variable displacement slider-crank mechanism, needed to convert a non-road small commercial reciprocating single cylinder diesel engine to a variable compression ratio (VCR) engine for academic research purposes. Preliminary dimensions and space trajectories of the projected variable stroke multilink mechanism, constrained by the design of the base engine, were obtained using the coupler curves of Hrones and Nelson’s atlas. A genetic algorithm methodology was implemented to optimize the mechanism performance, as well as to give advantageous compression ratio and displacement behavior, according to both dimensional and kinematic fitness-criteria. A six links Stephenson structure was argued, as the base for a multilink variable stroke slider-crank mechanism, to alter the piston position and stroke variation ranges. With the obtained synthesized mechanism installed in the structure of the base engine, the compression ratio would be varied between 10 and 17.5, at the time that the actual range of piston displacement would be extended in a range between 23 and 38 %. The work conducted is part of a research under work, which pursues to construct the VCR multilink mechanism to install in the available engine.
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Citation
Henao Castañeda, E., Romero, C., and Quintero, H., "Development Work on the Synthesis of a Variable Stroke Slider-Crank Mechanism for a Variable Compression Ratio Combustion Engine," SAE Technical Paper 2021-01-0653, 2021, https://doi.org/10.4271/2021-01-0653.Data Sets - Support Documents
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References
- Wong , V. , Stewart , M. , Lundholm , G. , and Hoglund , A. Increased Power Density via Variable Compression/Displacement and Turbocharging Using The Alvar-Cycle Engine SAE Technical Paper 981027 1998 https://doi.org/10.4271/981027
- Ma , T. 1992
- Stockholm , H.D. , Vagnharad , P.-I.N. , and Jarna , L.B. 1994
- Rao , V. , et al. 2003
- Wirbeleit , F. , Binder , K. , and Gwinner , D. Development of Pistons with Variable Compression Height for Increasing Efficiency and Specific Power Output of Combustion Engines - Daimler-Benz SAE Technical Paper 900229 1990 https://doi.org/10.4271/900229
- Wittek , K. , Tiemann , C. and Pischinger , F. SAE Int. J. Engines 2 1 1304 1313 2009 https://doi.org/10.4271/2009-01-1457
- Gooijer , D. and Lambertus , H. A Reciprocating Piston Mechanism July 31, 2013
- Katsuya , M. , Shunichi , A. , Kenshi , U. , Ryousuke , H. et al. A Study of a Variable Compression Ratio System with a Multi-Link Mechanism SAE Technical Paper 2003-01-0921 2003 https://doi.org/10.4271/2003-01-0921
- Ryosuke , H. , Shunichi , A. , Shinichi , T. , Kenshi , U. , and Takanobu , S. A Study of a Multiple-Link Variable Compression Ratio System for Improving Engine Performance SAE Technical Paper 2006-01-0616 2006 https://doi.org/10.4271/2006-01-0616
- Roberts , M. Benefits and Challenges of Variable Compression Ratio (VCR) SAE Technical Paper 2003-01-0398 2003 https://doi.org/10.4271/2003-01-0398
- www.vcr-i.com http://www.mce-5.com/resultats_cle.html 2020
- Asthana , S. , Bansal , S. , Jaggi , S. , and Kumar , N. A Comparative Study of Recent Advancements in the Field of Variable Compression Ratio Engine Technology SAE Technical Paper 2016-01-0669 2016 https://doi.org/10.4271/2016-01-0669
- Shaik , A. et al. Variable Compression Ratio Engine: A Future Power Plant for Automobiles - An Overview Proceeding of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 221 9 1159 1168 2007 10.1243/09544070JAUTO573
- Freudenstein , F. and Maki , E. The Creation of Mechanisms According to Kinematic Structure and Function Environment and Planning B: Urban Analytics and City Science 6 4 1979 10.1068/b060375
- Hoeltgebaum , T. , Simoni , R. , and Martins , D. Reconfigurability of Engines: A Kinematic Approach to Variable Compression Ratio Engines Mechanism and Machine Theory 96 308 322 2016
- Tsai , L.W. Mechanism Design: Enumeration of Kinematic Structures According to Function California eBook 2000
- Hrones , J. and Nelson , G. Analysis of the Four Bar Linage New York MIT Press and Wiley 1951
- Merchán Cruz , E.A. , Lugo González , E. , Ramírez Gordillo , J. , Rodríguez Cañizo , R.G. et al. Síntesis Genética de Mecanismos para Aplicaciones en Prótesis de Miembro Inferior Revista Iberoamericana de Automática e Informática Industrial 8 2 45 51 2011
- Zhang , X. and Nelson , C.A. Multiple - Criteria Kinematic Optimization for the Design of Spherical Serial Mechanisms Using Genetic Algorithms J. Mech. Design 133 1 2011
- Cabrera , J.A. , Nadal , F. , and Castillo , J.J. An Evolutionary Algorithm for Path Synthesis of Mechanisms Mechanism and Machine Theory 46 127 141 2011