| 摘要 |
An air-preintroduction type two-stroke internal combustion engine which is capable of minimizing the quantity of blow-by, thus making it possible to improve the fuel consumption and to reduce the content of poisonous components in the exhaust gas, and is also capable of reasonably and compactly arranging the peripheral components of engine, thereby making it possible to reduce the number of parts, to lighten the weight thereof, to save the manufacturing cost thereof, and to simplify the working and assembling thereof. Specifically, this internal combustion engine is characterized in that an air inlet passageway for introducing air into the scavenging passageways is provided inside a wall portion of the cylinder.
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