Abstract
This paper reports the development factors for applying the in-cylinder direct fuel injection technology to the supercharged gasoline engine for motorcycle aiming at further improvement of fuel consumption, higher power and lower emission. In particular, since the bore stroke of the highrevolution motorcycle engine is smaller than that of the passenger car engine, the fuel injected into the cylinder tends to impinge on the cylinder walls and cause combustion failure and soot. Techniques for solving these problems are mainly reported.
