Development of Air/Oil-Cooled Motorcycle Engine Using Thermal and Fluid Analyses
Date Published: 2007-04-16
Paper Number:2007-01-0538
DOI: 10.4271/2007-01-0538
Citation:
Gokan, Y., Takahashi, Y., Inayoshi, M., Ishima, T. et al., "Development of Air/Oil-Cooled Motorcycle Engine Using Thermal and Fluid Analyses," SAE Technical Paper 2007-01-0538, 2007, doi:10.4271/2007-01-0538.
To achieve power output and cooling performance in motorcycle air-cooled engines equivalent to those in water-cooled engines, an engine utilizing air-flow generated by the moving motorcycle and a new oil-cooling system for an air-cooled engine was studied. The engine temperature distribution was obtained based on a CFD (Computational Fluid Dynamics) analysis of cooling-air/oil behavior using an inline four-cylinder 900cm
3
engine. As a result of this study, engine temperature was sufficiently decreased and the difference in temperature among cylinders was reduced; the engine was tested in a prototype motorcycle.
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