Filter Element for Filtering Fluids
AssigneeMann+Hummel GmbH
InventorsGünter Görg, Fabian Wagner, Jürgen Rauschmaier
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Abstract
A filter element for filtering fluids has a support tube having a circumferential wall provided with passages for a fluid. A hollow elongate filter medium is arranged axially on the support tube. The passages are adapted in regard to size; distribution; or size and distribution to a fluidic configuration of the filter element such that non-uniform fluid flows that exist in operation of the filter element upstream of the support tube are compensated. The filter element is used in particular in air filters for internal combustion engines.
Claims13
A filter element for filtering fluids, the filter element comprising:
- a support tube having a circumferential wall provided with passages for a fluid;
- a hollow elongate filter medium that is arranged axially on said support tube;
- wherein said passages are adapted in regard to size;
- distribution;
- or size and distribution to a fluidic configuration of said filter element such that non-uniform fluid flows that exist in operation of the filter element upstream of said support tube are compensated.
An air filter of an internal combustion engine, the air filter comprising:
- a filter housing;
- a filter element arranged in said filter housing,
- wherein said filter element comprises
- a support tube having a circumferential wall provided with passages for a fluid;
- and
- a hollow elongate filter medium that is arranged axially on said support tube;
- wherein said passages are distributed almost across an entire axial extension of said support tube;
- and
- wherein a ratio of a total circumferential surface area of said passages to a total circumferential surface area of a wall surface of said support tube, said wall surface surrounding said passages and being impermeable to the fluid, decreases from a first end toward a second end of said support tube.
Dependencies are inferred from the claim text.