| 摘要 |
PURPOSE: An unburnt gas circulation structure of an engine is provided to prevent the generation of a sludge and exactly control the air amount of a throttle valve. CONSTITUTION: In an unburnt gas circulation structure of an engine, a breather hose(7) for feeding the unburnt gas from an engine body to a new air introducing passage is connected to a throttle body(2). The unburnt gas is exhausted through a throttle valve(8) in the throttle body(2). The throttle valve(8) introduces the unburnt gas into the inside of a central shaft(9a), and exhausts the unburnt gas through exhaust holes(10a) formed on a cover plate(10).
|
