| 摘要 |
<p>An improved two cycle internal combustion engine (10), preferably of a stepped piston type (42), having an arcuately shaped transfer deflector valve (18, 20), which varies by its controlled sliding movement within an inlet passage (68, 70), the size of exposed opening of an elongated inlet port (22, 24) in the cylinder (12). The inlet port (22, 24) extends circumferentially part way around the cylinder (12). The leading end (18a, 20a) of the valve (18, 20) is preferably angled, in cooperation with the almost tangent orientation of the inlet passage (68, 70), to induce arcuate movement into each fresh full charge entering the combustion chamber for enhanced fuel charge mixing. Two valves (18, 20) are symmetrically positioned arond the cylinder (12) and arcuately move in unison between closed and open positions over corresponding opposing inlet ports (22, 24).</p> |
