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Thermodynamic and Tribological Analysis of an Innovative Mechanism for Reciprocating Machines
Technical Paper
2023-24-0016
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Research and development studies regarding the internal combustion engines are, now more than ever, crucial in order to prevent a premature disposal for this application. An innovative technology is analyzed in this paper. The traditional slider-crank mechanism is replaced by a system of two ring-like elements crafted in such a way to transform the rotating motion of one element in the reciprocating motion of the other. This leads both to a less complex engine architecture and to the possibility to obtain a wide range of piston laws by changing the profile of the two cams. The relative motion of the cams is the peculiar feature of this engine and, due to this, alongside with the thermodynamic analysis, also the tribological aspects are investigated. 3D-CFD simulations are performed for several piston laws at different engine speeds to evaluate the cylinder pressure trace to be used as input data for the development of the tribological model. Moreover, the CFD results are analyzed in terms of engine performance to compare each piston law with the traditional crank law.
Authors
- Vasileios Georgitzikis - LESS Engineering
- Sebastiano Breda - Universita di Modena e Reggio Emilia
- Christos Kalligeros - National Technical University of Athens
- Vasilios Spitas - National Technical University of Athens
- Nikolaos Rogkas - National Technical University of Athens
- Giuseppe Cicalese - R & D CFD Srl
- Fabrizio D'Orrico - R & D CFD Srl
- Panteleimon Tzouganakis - National Technical University of Athens
- Stefano Fontanesi - Universita di Modena e Reggio Emilia
Citation
Georgitzikis, V., Breda, S., Kalligeros, C., Spitas, V. et al., "Thermodynamic and Tribological Analysis of an Innovative Mechanism for Reciprocating Machines," SAE Technical Paper 2023-24-0016, 2023.Also In
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