| 摘要 |
PURPOSE:To accomplish a complete combustion in a combustion chamber, by opening the fuel injection port of a carburetor piercing through the combustion chamber to a carburetion chamber, and by providing an oil sump at the bottom of a combustion chamber. CONSTITUTION:A combustion cylinder 11 is divided into a carburetion chamber 7 and a combustion cylinder 6 by putting a bulkhead 8 on a step 9 provided on the inside wall of a combustion cylinder 11, and an annular protrusion 40 is formed at the bottom of a combustion cylinder 11 where a combustion gas discharge opening 18 is formed. A circular channel 39 is formed by the annular protrusion 40 and the bottom of a combustion cylinder 11, and it is functioned as an oil sump. A vaporized fuel is injected from an injection port 32. At the time if liquid fuel is not completely vaporized, the vaporized fuel mixed with oil droplets is injected from the injection port 23, colliding against a top plate 5, being liquefied as the heat is taken from the vaporized fuel, dripping or flowing down along the wall of a combustion cylinder 11 as a fuel liquid. But the fuel liquid is collected in the oil sump 39 and is vaporized again by receiving combustion heat when combustion is intensified in the combustion chamber 6. The fuel can be burned, mixed with a combustion air being fed from air inlet ports 17, so that vaporized fuel can be burned without fail. |
