Filter system, positioning mechanism, filter element and method for inserting and positioning a filter element

A method for inserting and positioning a filter element in a filter system:

• providing the filter element, the filter element including a first end disc, a second end disk, and a filter material disposed between the first end disk and the second end disk, the first end disk including at least one of a radially projecting contour and an inwardly projecting recess, the second end disk including a central opening and an eccentrically projecting locking pin;
• providing a separate positioning mechanism having a body with a first recess disposed on an inner circumference and at least one second recess disposed on an outer circumference;
• inserting the filter element into a housing of the filter system such that the locking pin of the second end disk interacts with a drain opening of the housing, the housing including an opening, a function carrier, and at least one contour radially protruding from an outer surface of the housing;
• coupling the positioning mechanism to the filter element such that the first recess on the inner circumference of the positioning mechanism interacts with the contour of the first end disk;
• rotating the coupled unit of the positioning mechanism and the filter element such that the at least one recess on the outer circumference of the positioning mechanism interacts with the at least one contour of the housing such that the locking pin of the second end disk of the filter element interacts with the drain opening of the housing such that pressure builds up in a filter chamber of the housing;
• wherein the central opening adapted to interact with the function carrier of the housing such that, in an installed position, the filter element separates a filter clean side from a filter crude side;
• and
• wherein the first recess and the at least one second recess are configured to facilitate positioning and aligning the filter element in the housing such that the locking pin of the filter element engages in the drain opening of the housing.

A filter system, comprising:

• a housing including an opening, a function carrier, a drain opening, and at least one contour radially protruding from an outer surface of the housing;
• a filter element including a first end disc, a second end disk, and a filter material disposed between the first end disk and the second end disk;
• the first end disk including a radially projecting contour;
• the second end disk including a central opening and an eccentrically projecting locking pin;
• a cylindrical positioning body including a first recess disposed in an inner circumferential surface of the positioning body and a second recess disposed in an outer circumferential surface of the positioning body;
• and
• wherein the first recess and the second recess are configured to facilitate positioning and aligning the filter element in the housing such that (i) the locking pin of the filter element engages in the drain opening of the housing and (ii) the central opening interacts with the function carrier of the housing such that the filter element separates a filter clean side from a filter crude side.