US Patent 7089892 Fuel injection system and method for two-cycle engines

A straddle seat type vehicle with a two-cycle internal combustion engine with a crankcase fuel injector. The crankcase fuel injector is mounted through a wall of the crankcase and injects fuel in a jet directed at incoming air entering into the crankcase. The engine may also include a transfer passage fuel injector that injects fuel in a jet directed generally transverse to the direction of airflow through the transfer passage.