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Optimization of a Light Aircraft Spark-Ignition Engine
Technical Paper
2006-01-2420
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The aim of this study was to find a convenient set-up for an innovative engine dedicated to light aircraft through a numerical one-dimensional simulation. Six different engine layouts were analyzed in order to find the highest power/weight ratio and the least voluminous configuration. The first was a four cylinder, four stroke, horizontally opposed, naturally aspirated, water cooled engine with 16 valves that delivered 75 kW (∼100 bhp) at 2400 rpm for an estimated weight of 65 kg. A gearbox was also used in the naturally aspirated model to decrease the displacement, the weight and the overall dimensions. The other solutions involved these two engines in a turbocharged layout in order to gain a further downsizing. The supercharging was obtained through a centrifugal compressor driven by an exhaust-gas driven turbine, which also allows the power to be restored at cruising altitude. The other engines were two-stroke turbocharged engines (compressor driven by gas-turbine) with and without a gearbox. The most important innovations of the two-stroke engines concern the turbo-charge group, an unidirectional-flow scavenging scheme with four all-acting exhaust valves, a forced-fed lubricating system and a direct fuel injection in order to reduce fuel consumption and pollution. The results have shown that the four and the two-stroke turbocharged engines are the most promising as far as the power/weight ratio and dimension reduction are concerned.
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Luongo, A., Nuccio, P., and Vignoli, M., "Optimization of a Light Aircraft Spark-Ignition Engine," SAE Technical Paper 2006-01-2420, 2006, https://doi.org/10.4271/2006-01-2420.Also In
References
- Luongo A. “Progetto di un motore alternativo a ciclo Otto per applicazioni nel campo dei velivoli ultraleggeri” Politecnico di Torino Tesi di Laurea, Maggio 2005
- Didonna V. “Indice del consumo di carburante finalizzato all'ottimizzazione del volo in crociera” Politecnico di Torino Tesi di Laurea, Febbraio 1993
- GT-Power - Gamma Technologies simulation code
- Heywood John B. “Internal Combustion Engine Fundamentals” 205 234 Mc Graw Hill 1988
- Troncarelli E. “Progetto di un banco prova per un gruppo di sovralimentazione” Politecnico di Torino Tesi di Laurea, Dicembre 1995
- Marzano M.R. Badami M. Millo F. Nuccio P. “Comparison Between Direct and Indirect Fuel Injection in an S.I. Two - Stroke Engine Small Engine Technology Conference (SETC) 1999
- Nuccio P. Marzano M.R. “Performance Improvement of Two-Stroke SI Engines for Motor-gliders and Ultralight Aircraft by Means of a GDI System” Small Engine Technology Conference (SETC) 2003
- Antonelli E. Nuccio P. Dongiovanni C. Marzano M.R. A New GDI 2-Stroke Engine to Meet Future Emission Limits: The Design and Prototype Architecture” Small Engine Technology Conference (SETC) 2004