| 摘要 |
An internal combustion engine combines the efficiency of a radial engine with the practicality of a piston and crankshaft arrangement. A stationary frame supports a stationary sun gear, and a rotor is pivoted about the axis of the sun gear. The rotor carries three crankshafts at 120 DEG intervals, each having an eccentric portion. Each crankshaft is fixed to rotate with a respective planetary gear, and all the planetary gears mesh with the sun gear and have the same pitch diameter as the sun gear. The crankshaft eccentricity is substantially 1/3 times the pitch radius of a planetary gear. The eccentric portion of each crankshaft has roller means rotatable about the same axis as the connection between the connecting rod and the eccentric portion, and a ring member with an internal surface surrounds and contacts all of the roller means simultaneously, the ring member being free to rotate about its own axis. Three valves admit the combustible mixture to each cylinder. A valve shaft reciprocates in a bore of the rotor, the bore being substantially radially arranged with respect to the rotor axis. The shaft has at its end remote from the valve head a roller adapted to contact the internal surface of the ring member over a fraction of each rotor revolution, thereby to depress the valve for the admission of the combustible mixture. Porting means are provided for exhausting products of combustion from each cylinder. |
