| 摘要 |
The stratified two cycle engine comprises: a cylinder having an upper end and a lower end, a head at the upper end and fuel and air intake ports at the lower end; at least one spark plug mounted in the head; a sleeve in the cylinder having an upper end and a lower end and the cylinder having exhaust ports at the upper end which are covered and uncovered by the upper end of the sleeve; a piston in the sleeve and connected to a crank shaft; a first exhaust manifold at one side of the cylinder at the upper end thereof adjacent one exhaust port in the cylinder and having first exhaust gas throttle valve means associated therewith; at least a first and a second fuel and air intake manifolds at one side of the cylinder and at the other side of the cylinder in communication with first and second fuel and air intake ports in the cylinder; throttle valve means in each intake manifold; a reed cage assembly in each intake manifold adjacent the associated intake port for injecting a fuel and air mixture into the cylinder; control means for controlling the injection of fuel and air mixture into the cylinder so that fuel and air mixture is injected into the cylinder through only one intake port when the engine is operating from zero to one half full load; and an operating connection between the crank shaft and the sleeve for causing reciprocation of the sleeve relative to movement of the piston to open and close the exhaust ports and the air and fuel intake ports in the cylinder.
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