| 摘要 |
The invention relates to a fuel injection system (1) for a two-stroke internal combustion engine (10) of the type comprising a cylinder (2) with an internal cavity (2') of a substantially cylindrical shape and having on its side wall (11) a number of intake ports (15, 16, 17) and exhaust ports (12, 13); a reciprocating piston (3) that slides coaxially within the cavity (2') of the piston (2); a cylinder head (6) connected to one end of the cylinder (2) and defining inside it a combustion chamber (7) that communicates with the cavity (2'). The cylinder head (6) mounts at least one fuel mixture ignition device (9). The system (1) comprises an electronic unit (20) that cyclically activates an injector (19), which is mounted in the side wall (11), when the exhaust ports (12, 13) are substantially closed, the axis (32) of the injector (19) making with the plane normal to the cylinder axis an angle ( beta ) of between 15 DEG and 35 DEG , while the angle ( alpha ) which the axis (32) of the injector (19) makes with the axis (12') of the exhaust port (12) is between 180 DEG and 360 DEG . |
