| 摘要 |
<p>A device for two-stroke internal combustion engines with crankcase-scavenging where the skirt (7) of the cylinder piston (6) of the cylinder of the engine, or in the case of several, for each cylinder, opens and closes a suction port (9) ending in the crankcase (8) in step with the piston movement to and from the crankcase. The suction duct of the engine close to the engine being divided into two branches, one branch (1) of which ends in the suction port (9), the opening and closing of which is controlled by the piston (6) mentioned. The other branch of the suction duct (3, 5) for controlling the closing and opening of its connection with the crankcase is provided with a rotating valve (4) the axis of rotation of which runs mainly in the direction of the engine-crankshaft. In the axial section in the area of the suction ducts the valve has the shape of a segment of a circle, which is located on the one side of the axis of rotation of the valve.</p> |
