The paper discusses the design of a racing motorcycle engine to compete in World Superbike racing. This class of motorcycle racing is based on production machines with four-stroke engines only. The rules allow three engine variants to be used, a 750 cm
3
four-cylinder engine, a 1000 cm
3
twin-cylinder engine, and a 900 cm
3
three-cylinder engine. To date only the first two variations have been employed but this paper shows that the 900 cm
3
engine has the highest potential power output of the set. This is demonstrated using engine simulation software and the finest detail of the design of the engine and its ducting are supplied within the discussion.
The input data for the engine simulation is provided by empiricism so that the design is initially well-matched from the intake bellmouth to the end of the exhaust system. The outcome of this empirical process is confirmed by the engine simulation to be a relevant initial design procedure.
Boretti A. A., Cantore G., Mattarelli E., Preziosi F., “Experimental and Computational Analysis of a High Performance Motorcycle Engine”, SAE Motorsports Engineering Conference, Dearborn, MI, November 1996, SAE 962526.
Blair G.P., “Design and Simulation of Four-Stroke Engines”, Society of Automotive Engineers, R186, ISBN 0-7680-0440-3, Warrendale, PA, August 1999.
Blair G.P., “Education and Design Software for Four-Stroke Engines”, Society of Automotive Engineers, R186SW, Warrendale, PA, August 1999.
Blair G.P. and OPTIMUM Power Technology, “VIRTUAL 4-STROKE Engine Simulation Model for Four-Stroke Engines”, Society of Automotive Engineers, R186M, Warrendale, PA, August 1999.
OPTIMUM Power Technology, “VIRTUAL 4-STROKE, Professional Edition”, Internet, www.optimum-power.com.
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