Oil bath air cleaner
AssigneeWhitehead Motofides S.p.A.
InventorAlberto Garigioli
Life of this patent
Estimating the term…
Abstract
An air cleaner for an internal combustion engine is disclosed in which the air cleaner comprises a casing having an inlet and an outlet and in which air flow from the inlet to the outlet passes into contact with a pool of liquid. The main feature of said air cleaner is that there is at least one filter cartridge of the mesh or wool type, and also at least one paper filter cartridge of relatively small height positioned within the casing between the pool of liquid and the casing outlet.
Claims18
An air cleaner for internal combustion engines said air cleaner being of the type having a casing having an air inlet and an air outlet, said casing having an outer wall which defines an inner housing chamber, a pool of liquid in the bottom of the casing, fluid passageway means connected at one end to said inlet and open at its other end to said pool;
- and a first filter cartridge constructed of wool or metal mesh positioned between said pool of liquid and said outlet so that air flow from said inlet and through said fluid passageway means passes into contact with said pool of liquid and then through said first filter cartridge, said cleaner further comprising:
- a second filter cartridge of relatively small height disposed between said first filter cartridge and said outlet, said second filter cartridge being constructed of paper;
- said fluid passageway means further comprising first means to provide a substantially constant ratio between the quantity of air passing through said fluid passageway means and the quantity of liquid associated with the air during its passage, said first means comprising a tubular member having a plurality of spaces, said spaces being at least partially immersed in said liquid;
- means for exerting a centrifugal action on the air leaving said first filter cartridge;
- means for creating a relatively calm region adjacent the outer wall of the casing, said last mentioned means being disposed in said housing chamber between said centrifugal means and said outlet and comprising an annular baffle fixed to the outer wall of the casing and further comprising an enlarged portion of the outer wall of the casing of said cleaner, said enlarged portion of the wall extending from said centrifugal means and toward said outlet;
- passage means for fluidly connecting said calm region with said pool of liquid;
- and
- wherein increases and decreases in air pressure within said tubular member effects a lowering and raising, respectively, of the level of liquid in which said spaces are immersed.
Dependencies are inferred from the claim text.