| 摘要 |
<p>In order to separate CO contained in exhaust gas in an internal combustion engine into C and O not by a chemical change caused by a catalyst but physically, a muffler comprises an external cylinder which is inserted in the muffler of an internal combustion engine and has an inlet hole formed on the upstream side and an outlet hole formed on the downstream side, and houses, within the external cylinder, a helical muffler element which is configured by securing a tapered conical body by a plurality of plate-shaped helical stays with the starting end and ending end thereof facing a radial direction and the middle part thereof twisted more strongly toward the peripheral end thereof between the conical body and the external cylinder. When flow paths separated by the helical stays are viewed from the front, the flow paths are each twisted to such a degree that the ending end thereof is hidden by the helical stay adjacent thereto and cannot be viewed, and the twist angle is set larger at the outer end of the helical stay than the inner end thereof.</p> |
