Oil filter for a motor vehicle and filter cartridge for an oil filter
AssigneesDaimler AG, Mercedes-Benz Group AG
InventorsMarkus Sander, Lionel Le Clech, Eric Schumacher
Life of this patent
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Abstract
An oil filter for a motor vehicle includes a filter cartridge disposed in an oil filter housing. A piston of the filter cartridge is displaceable in the oil filter housing in an axial direction of the filter cartridge. The filter cartridge has a closure element where the closure element is held at an end of at least one strut of the filter cartridge and where a free end of the at least one strut is supported in the oil filter housing. The piston is displaceable relative to the at least one strut in the axial direction of the filter cartridge.
Claims16
An oil filter (10) for a motor vehicle, comprising:
- an oil filter housing (14), wherein the oil filter housing (14) has a main body (16) and a cover element (18);
- and
- a filter cartridge (12) disposed in the oil filter housing (14), wherein a piston (36) of the filter cartridge (12) has a channel (20) for filtered oil and an outlet port (28), wherein the channel (20) is surrounded in a radial direction at least in some regions by a filter material (22) of the filter cartridge (12), and wherein the filter material (22) is disposed between a first end plate (30) and a second end plate (40) of the piston (36);
- wherein the piston (36) is displaceable in the oil filter housing (14) in an axial direction (38) of the filter cartridge (12) in order to prevent, in a closed position of the piston (36), an entry of filtered oil into a channel (34) provided in the oil filter housing (14) via a passage opening (32) formed in the outlet port (28), and, in an open position of the piston (36) in which the piston (36) is distanced further from the cover element (18) than in the closed position, to allow entry of oil into the channel (34) provided in the oil filter housing (14);
- wherein the filter cartridge (12) has an annular closure element (54) via which an annular drain channel (56), which is configured to drain oil from a receiving region (58) of the oil filter housing (14) in which the filter cartridge (12) is disposed, is closable;
- wherein the annular closure element (54) is held at an end of at least one strut (64) of the filter cartridge (12), wherein a free end of the at least one strut (64) is supported in the oil filter housing (14), and wherein the piston (36) is displaceable relative to the at least one strut (64) in the axial direction (38) of the filter cartridge (12).
A filter cartridge for an oil filter (10) of a motor vehicle, wherein the filter cartridge can be disposed in an oil filter housing (14) of the oil filter (10) and wherein the oil filter housing (14) has a main body (16) and a cover element (18), comprising:
- a piston (36) that has a channel (20) for filtered oil and an outlet port (28), wherein the channel (20) is surrounded in a radial direction at least in some regions by a filter material (22) of the filter cartridge (12) and wherein the filter material (22) is disposed between a first end plate (30) and a second end plate (40) of the piston (36);
- wherein the piston (36) is displaceable in the oil filter housing (14) in an axial direction (38) of the filter cartridge (12);
- and
- an annular closure element (54) via which an annular drain channel (56), which is configured to drain oil from a receiving region (58) of the oil filter housing (14) provided for receiving the filter cartridge (12), is closable;
- wherein the annular closure element (54) is held at an end of at least one strut (64) of the filter cartridge (12), wherein a free end of the at least one strut (64) can be supported in the oil filter housing (14), and wherein the piston (36) is displaceable relative to the at least one strut (64) in the axial direction (38) of the filter cartridge (12).
Dependencies are inferred from the claim text.