| 摘要 |
An air flow system for an internal combustion engine which includes a cylindrical air cleaner, the cylindrical air cleaner divided into a centrally disposed air swirling zone and a laterally disposed filter zone; and a swirling device disposed in the air swirling zone, the swirling device including a plurality of flexible vane members which extend radially toward the periphery of the swirling device for increasing air flow, at least one elongated slit disposed in each of the plurality of vane members for preventing the generation of negative pressure behind the vane members, and at least one groove disposed on the surface of each of the plurality of vane members for preventing the generation of negative pressure behind the vane members and increasing the force of the swirling air flow, whereby when air is introduced through said filter zone and into the air swirling zone, a strong swirling force is generated which is retained by the reduced resistance created in the air flow through the vane members.
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