| 摘要 |
PURPOSE:To improve exhaust emission control efficiency for an engine and improve noise suppressing effect. CONSTITUTION:The exhaust gas of an engine 1 is emitted in the outside air, passing from a manifold 2 through the first catalytic device 3, second catalytic device 4, muffler 5, heat radiation pipe 6, and a muffler 7 which serves as regulator. The first catalytic device 3 is equipped with a screw fin inside, and the surface of the screw fin and the inner surface of a casng is applied with the heat resistive self cleaning enamel. Further, on the surface of the enamel, a filter adhering the catalytic substance is applied. Also on the inner surface of the muffler 5, the heat resistive self cleaning enamel is apllied. An alkali ceramics sleeve is arranged on the muffler 7 which serves also as regulator. |
