A combustion air filtration apparatus for filtering combustion air for an engine is disclosed. The combustion air filtration apparatus comprises a combustion air source and a filter system fluidly coupled to the combustion air source and to the engine to receive combustion air from the combustion air source and to supply filtered combustion air for the engine. The filter system comprises a first combustion air filter, a second combustion air filter flow-parallel to the first combustion air filter, and a flow control system fluidly coupled to the first combustion air filter and the second combustion air filter to direct flow of combustion air selectively between the first combustion air filter and the second combustion air filter.

A two-wheeled vehicle includes a frame assembly, a plurality of ground-engaging members for supporting the frame assembly, and a cooling assembly positioned below a head portion of the frame assembly and intermediate vertically-extending frame tubes of the frame assembly. A lower end of the cooling assembly is coupled to a lower end of the vertically-extending frame tubes, and an upper end of the cooling assembly is frictionally retained at an upper end of each of the vertically-extending frame tubes.

An air cleaner includes an intake filter seated on an air cleaner body, an air cleaner cover spaced apart from the intake filter and coupled to the air cleaner body, and a cover rigidity reinforcement member detachably coupled to the intake filter and configured to restrict displacement toward the intake filter. The intake filter includes a non-woven fabric configured to filter foreign matters of introduced outside air, and a filter frame surrounding and fixing a circumference of the non-woven fabric.

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.

In an intake device for an internal combustion engine, a first resonator chamber (61) is defined between a clean side chamber (56) and a peripheral wall (8) of a case (2), and a first communication passage (61B) communicating a dust side chamber (55) with the first resonator chamber is extending along the peripheral wall of the case.

A vehicle air filter housing having a broad band tuner. The housing is formed from a tray having a divider wall defining an unfiltered air induction chamber and a tuner chamber. A cover securable to the tray includes a second divider wall defining a filtered air chamber and a flow path chamber. A filter member provides a seal between the tray and the cover, and holds an air filter between the unfiltered air chamber and the filtered air chamber. A plate securable to the flow path chamber has a plurality of perforations. Air inducted through the inlet passes through the air filter and flows through the flow path chamber at a velocity whereby the filtered air passes over the perforated plate and predetermined frequencies pass through the plate perforations for attenuation in the tuner chamber. The tuners in the tuner chamber may be sized to attenuate different frequencies.

Embodiments of the present application disclose a filter device and an all-terrain vehicle. The filter device includes: a body having an accommodating chamber and a mounting port in communication with the accommodating chamber; a filter assembly provided in the accommodating chamber, the accommodating chamber being provided with a first support portion therein, the first support portion supporting a first end of the filter assembly, the accommodating chamber being divided into an intake chamber and an outtake chamber by filter assembly; and an end cap member detachably provided to mounting port, an inner side of the end cap member being provided with a second support portion, the second support portion supporting a second end of the filter assembly.

A combustion air filtration apparatus for filtering combustion air for an engine is disclosed. The combustion air filtration apparatus comprises a combustion air source and a filter system fluidly coupled to the combustion air source and to the engine to receive combustion air from the combustion air source and to supply filtered combustion air for the engine. The filter system comprises a first combustion air filter, a second combustion air filter flow-parallel to the first combustion air filter, and a flow control system fluidly coupled to the first combustion air filter and the second combustion air filter to direct flow of combustion air selectively between the first combustion air filter and the second combustion air filter.

A fluid filter has a filter housing with inlet opening for fluid to be cleaned and outlet opening for cleaned fluid. A filter element arranged in an element receptacle of the filter housing separates inlet opening from outlet opening. The filter housing has a housing body with an installation opening to the element receptacle, through which the filter element in an installation direction is introduced into the element receptacle. The filter housing has a housing cover for closing the installation opening. The installation opening is arranged in a transverse side of the housing body that is lateral relative to the housing axis. The filter housing has a sealing surface, surrounding the housing axis at least partially circumferentially, for contacting a seal of the filter element. The filter element has a seal support device for the seal and the filter housing has a pressing device for the seal support device.

Provided is an air cleaner including: a first case and a second case each having a case wall; and a flat plate filter element sandwiched between the first case and the second case, wherein the flat plate filter element has an annular sealing portion on a peripheral edge of the flat plate filter element, at least a partial section of a peripheral edge of at least one of the first case or the second case has a flange portion and a guide wall inside the case wall, the flange portion contacts the sealing portion and extends inside at least one of the first case or the second case substantially perpendicular to the case wall from an end of the case wall, and the guide wall extends substantially parallel to the case wall and facing the case wall from an inner end of the flange portion.