Air filter system and air filter element for an air filter system

摘要

A filter system for intake air of an internal combustion engine has a housing with a cover. A filter element is arranged in the housing. An inlet feeds a medium to be filtered into the housing and an outlet discharges the medium from the housing. The filter element has a filter body with first end face and opposite second end face. The filter element has an open first end plate at the first end face and a second end plate at the second end face. A support tube is arranged concentrically about a longitudinal axis in the housing and attached with a first end to the housing. The support tube is arranged in the interior of the filter element and radially supports the filter body. The second end plate rests on the second end of the support tube and on an inner cover contour of the cover with anti-rotation action.

主权项

1. An air filter system for intake air of an internal combustion engine, the air filter system comprising:
a housing having a longitudinal axis, the housing having a first front face and a second front face; a cover closing off the first front face of the housing, the cover having an inner cover contour having a plurality of radially extending rib-like protrusions, the rib-like protrusions protruding axially inwardly from the cover towards an interior of the housing; an inlet arranged on the housing and adapted to feed a medium to be filtered into the housing; an outlet arranged on the housing and adapted to discharge the medium that has been filtered from the housing; a replaceable filter element arranged in the interior of the housing; the filter element comprising an annular filter body of a filter medium having a first axial end face and a second axial end face opposite the first axial end face; the filter element further comprising
an open first end plate arranged at the first axial end face; anda second end plate arranged at the second axial end face;a circumferentially extending projection formed on an axially outer face of the second end plate and extending circumferentially about the longitudinal axis (L) and protruding axially outwards from the axially outer face of the second end plate,
wherein elastically deformable material of the circumferentially extending projection comprises an polyurethane foam or other elastic material,wherein the elastically deformable material of the circumferentially extending projection deformably interlocks with or claws into the rib-like protrusions, securing the filter element against rotation in the housing and supporting the filter element on the cover.