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Simulation Techniques Applied to the Development of a 125cc 4 Stroke Scooter Engine
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Abstract
In the automotive industry, computer simulation techniques have been developed to improve the 4-stroke engine development process. The objectives are to reduce engine development time, optimise engine performance, improve refinement, and to achieve legislative noise and emissions requirements. The application of these methods to a 4 stroke scooter engine has been evaluated. This paper describes how computer simulation techniques have been used to assist with the development of a new 125cc 2 valve 4 stroke scooter engine built by Piaggio Veicoli Europei Spa, and to evaluate an advanced 4-stroke scooter engine concept.
A single dimensional fluid dynamic analysis code WAVE has been used to simulate engine performance and inlet/exhaust noise during prototype development. To support this analysis, pseudo-static valve train analysis using a multi-polynomial camshaft design approach has been used to optimise valve train performance. In addition, port development techniques have been applied to optimise the trade off between part load combustion stability and full load volumetric efficiency requirements. A potentially high specific output engine derivative based on a crankcase supercharged 4 stroke concept has also been evaluated by computer simulation.
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Urciuoli, V., Mason, B., and Marcacci, M., "Simulation Techniques Applied to the Development of a 125cc 4 Stroke Scooter Engine," SAE Technical Paper 961030, 1996, https://doi.org/10.4271/961030.Also In
References
- MOREL T. FLEMING M.F. LA POINTE L. Characterization of manifold dynamics in the Chrysler 2.2 SI engine by measurement and simulation SAE 900679
- SAPSFORD S.M. RICHARDS V.C.M. Exhaust system evaluation and design by non-linear modellind SAE 920686
- de BOER C.D. JOHNS R.J.R. GRIGG D.W. TRAIN B.M. DENBRATT I. LINNA J-R Refinement with performance and economy for four-valve automotive engines
- KYRIAKIDES S.C. GLOVER A.R. A study of the correlation between in-cylinder air motion and combustion in gasoline engines
- Ricardo steady state flow bench port performance measurement and analysis techniques
- HEATH A.R. Valve train design for multivalve automotive gasoline engines SAE 8855133
- FERRARI G.
- PIGNONE G.A. VERCELLI U.R. 88-7911-135-3
- PETRAK R. POLONI M. Exhaust system noise optimisation using mathematical modelling
- FERRARI G. ONORATI A. Intake and exhaust noise predictions Proceedings, Inter-Noise 91 Sydney, Australia 569 572
- OKANISHI N. FUKUTANI I. WATANABE E. Torque boosting of 4 stroke cycle spark ignition engine in low and middle engine speed ranges by crankcase supercharging SAE 840423
- OKANISHI N. FUKUTANI I. WATANABE E. Torque boosting of 4 stroke cycle spark ignition engines by crankcase supercharging SAE 900173
- OKANISHI N. SUZUKI T. FUKUTANI I. A study of a crankcase supercharged 4 stroke cycle engine through on-road tests using motorcycles and passenger cars JSAE Review 13 4 Oct 1992 24 30