Air flow system for internal combustion engine

• US 5,947,081 A
• Filed: 08/12/1997
• Issued: 09/07/1999
• Est. Priority Date: 08/12/1997
• Status: Expired due to Fees

• Current Assignee: Sei Y. Kim
• Original Assignee: Sei Y. Kim
• Inventors: Kim, Sei Y.
• Primary Examiner(s): Wolfe, Willis R.
• Assistant Examiner(s): Vo, Hieu T.
• Application Number:
  US08/909,734
• Time in Patent Office: 756 Days
• Field of Search: 123/306, 123/590, 123/592, 123/593, 123/184.21, 123/184.32, 123/184.46, 123/184.54, 60/902
• US Class Current: 123/306
• CPC Class Codes: F02M 29/06 generating whirling motion of mixture
• CPC Class Codes: F02M 35/022 acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls

Abstract

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.

Claims

1. An air flow system for an internal combustion engine which comprises:

a cylindrical air cleaner, said cylindrical air cleaner divided into a centrally disposed air swirling zone and a laterally disposed filter zone; and

a swirling device disposed in said air swirling zone, said swirling device including;

a plurality of 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 said 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 said 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 said 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.

2. The air flow system of claim 1, wherein each of the vane members contains up to six elongated slits which are disposed in a vertical, horizontal or canted direction or in a combination thereof.

3. The air flow system of claim 2, wherein each of the vane members contain up to twelve grooves which are disposed on one side of the slits or mixed with the slits.

4. The air flow system of claim 1, wherein the grooves are configured as semi-spherical or elongated.

5. The air flow system of claim 1, further comprising a second swirling device disposed near the entrance to the intake manifold to provide an air swirl in the same direction as said first air swirling device.

6. The air flow system of claim 1, wherein said engine is a gasoline or diesel engine.

7. The air flow system of claim 1, wherein said swirling device includes a central portion spaced from an opening in the bottom of said air cleaner and said vane members extend from said central portion toward said bottom of said air cleaner whereby said swirling device surrounds said opening in the bottom of said air cleaner.

8. The air flow system of claim 1, wherein said grooves are disposed on the top or bottom surface of the vanes.

9. The air flow device of claim 1, wherein said vane members are disposed inside of said air cleaner element.

10. The air flow device of claim 1, wherein said swirling device is formed from a single piece of metal or a plurality of pieces of metal.

12. The air flow device of claim 1, wherein the vane members are flexible or inflexible.

11. A swirling device for use in an air cleaner of an internal combustion engine which comprises:

a cylindrical air cleaner, said cylindrical air cleaner divided into a centrally disposed air swirling zone and a laterally disposed filter zone; and

a swirling device disposed in said air swirling zone, said swirling device including;

a plurality of 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 said 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 said 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 said 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.

13. The swirling device of claim 11, wherein the vane members are flexible or inflexible.