| 摘要 |
<p>The invention relates to an engine that uses a crown gear and a planet gear which allow the connecting rod to be fixed at a point which has a straight trajectory, converting the movement thereof into a translation. Since there is no inclination the friction between piston and cylinder disappears. The pure sinusoidal movement of the piston is completely balanced. The piston descends more slowly than in conventional engines, thereby improving combustion. The connecting rod is replaced by two threaded parts which allow the size thereof to be varied by means of mutual screwing using a splined joint, thus modifying the TDC and compression. This particular feature and the lack of friction are optimum for achieving an asymmetrical Atkinson cycle, decreasing the effective intake stroke. The invention includes the use of a rotary variable-phase-shift valve in series with another conventional delayed-opening valve, thus minimizing load losses. These characteristics (improved combustion, absence of friction, symmetrical cycle, optimized compression ratio) ensure efficiency levels that are competitive compared to those of hybrid configurations.</p> |
