An air filter and methods are provided for optimizing filtration of an airstream passing through a volume within an air cleaner cover of an internal combustion engine. The air filter comprises a base plate that includes an inlet receiver for passing the airstream into an air inlet of the engine. A top plate comprises a receiver for fastening the air cleaner cover onto the air filter. Countersinks in the top plate and sleeves extending through the air filter facilitate fastening the air filter onto the air inlet of the engine. The air filter has a tapering height along a length of the air filter to maximize the total surface area of a filter medium within the volume between the air cleaner cover and the engine, and to take advantage of a relatively greater airflow due to a ram air opening in the air cleaner cover.

A filter element including a filter media, an end cap, and a baffle. The filter media is configured to be secured within a housing. The housing includes an inlet configured to accept a fluid for filtering and the filter media including a circumferential outer surface. The end cap is positioned at and coupled to one end of the filter media. The baffle is positioned relative to the filter media at a position such that, when the filter element is correctly installed within the housing, the baffle is proximate the inlet of the housing. The baffle extends around only a portion of the circumferential outer surface of the filter media in a radial direction.

An air intake system for an aircraft engine includes an air duct having an inlet port to provide fluid communication between the inlet port and the engine and a removable air filter assembly configured to interface with the inlet port of the air duct and a skin of the aircraft. The air filter assembly includes an air filter frame having an outer wall and an inner wall, the outer wall of the air filter frame forming an air filter slot. The air filter assembly also includes a bypass door forward of the air filter slot and an air filter insertable into the air filter slot. The bypass door is movable between a closed door position and an open door position, air flowing to the inlet port of the air duct via the air filter in the closed door position and bypassing the air filter in the open door position.

The technology disclosed herein generally relates to fluted filter assemblies, where flutes formed in the filter media extend from a first flow face of the filter assembly to a second flow face of the filter assembly, where one flow face is an inlet and one flow face is the outlet. Some embodiments relate to first flute distance between the first flow face and the second flow face differing from a second flute distance between the first flow face and the second flow face by greater than 2 mm. In some embodiments at least one of the first flow face and the second flow face is non-planar, while in other embodiments at both of the first flow face and the second flow face are planar and non-parallel. Other embodiments are described.

An air filter for an air conditioning system of a railway vehicle includes a first layer of a first filter medium with a first medium surface, a second layer of a second filter medium with a second medium surface, and a peripheral frame to hold the first layer and the second layer adjacent to each other, wherein the second surface medium area is non-flat and provides a larger filter surface area than the first layer.

A filter element is provided for being removably arranged in a filter housing. The filter element includes a tubular filter material body, and a first end panel at a first end of the filter element in an axial direction of the filter element. The first end panel includes an opening to an interior of the filter material body. The first end panel includes a generally flat external surface, which is inclined in relation to a plane perpendicular to the axial direction of the filter element. A filter housing including a compartment for receiving such a filter element is also provided. A filter system including such a filter element and filter housing, and an internal combustion engine system and a vehicle including such a filter system are also provided.

A filter element including a filter media, an end cap, and a baffle. The filter media is configured to be secured within a housing. The housing includes an inlet configured to accept a fluid for filtering and the filter media including a circumferential outer surface. The end cap is positioned at and coupled to one end of the filter media. The baffle is positioned relative to the filter media at a position such that, when the filter element is correctly installed within the housing, the baffle is proximate the inlet of the housing. The baffle extends around only a portion of the circumferential outer surface of the filter media in a radial direction.

A filter element has a filter medium body with a first side and an oppositely positioned second side, wherein one of the first and second sides is the inflow side of the filter medium body and the other one is the outflow side of the filter medium body. A first sealing or supporting element is arranged at the first side. A second sealing or supporting element is arranged at the second side. At least one force-transmitting adhesive bead extends between the first side and the second side, wherein the at least one adhesive bead is a force transmitting element extending between the first and second sealing or supporting elements.

A vehicle provided with an engine, at least one air intake opening through which the engine takes in the external air needed to operate, and an air filter, which is arranged in the area of the air intake opening; the air filter has: at least one wave-shaped filtering material element; an outer reinforcement mesh; an inner reinforcement mesh; and a heating device, which is electrically connected to a group of electrified wires of the outer reinforcement mesh and is designed to cause an electric current to flow through the electrified wires, so as to generate heat, due to Joule effect, on the inside of the outer reinforcement mesh.

A filter cartridge for a filter for filtration of a fluid has a prismatic basic shape with a base face and a top face arranged parallel to each other and each having a polygonal basic shape. The prismatic basic shape is provided with a first lateral face and a second lateral face neighboring the first lateral face, wherein the first lateral face is an inflow surface and is substantially positioned perpendicular to the neighboring second lateral face. The prismatic basic shape has a third lateral face that is an outflow surface and is positioned at an angle relative to the first lateral face, wherein the angle is greater than 10 and smaller than 80. A filter with such a filter cartridge is disclosed.