An apparatus for removing debris from the intake of an engine includes an air cleaner housing with an inlet opening, an air entry cavity, one or more turbulent flow tubes, and at least one outlet opening. The inlet opening in the air cleaner housing is configured to receive an incoming flow of air from a blower. The air entry cavity is coupled with the inlet opening of the air cleaner housing. The one or more turbulent flow tubes configured to divide the flow of air from the air entry cavity and remove debris from the flow of air. The at least one outlet opening in the air cleaner housing is coupled to the one or more turbulent flow tubes and configured to expel the debris from the air cleaner housing. In addition, excess air from the air cleaner housing and/or combustion air is expelled from the air cleaner housing.

The blow-by gas treating device 100 has a main structure portion 101 which separates oil OL from the blow-by gas BG and an outlet portion 40 which supplies gas G having been separated from the blow-by gas BG to an intake system. The main structure portion 101 has a first blow-by gas taking-in portion 111, a second blow-by gas taking-in portion 112, a separating portion 330 which separates the blow-by gas BG into oil OL and gas G, a first oil guiding portion 151 which guides the oil OL to a front side, a second oil guiding portion 152 which guides the oil OL to a rear side, a first oil drain 161 which discharges the oil OL into the engine, and a second oil drain 162 which discharges the oil OL into the engine.

An air filter subassembly includes a filter element with a pre-cleaner tube member that is snapped onto the filter element.

An air cleaner has a body, an intake part to take air into the body, an exhaust pipe to exhaust the air from the body, a mounting section to mount an air flow meter to the exhaust pipe, a rib disposed on an inner surface of the body, and a straightening element disposed on an inner surface of the exhaust pipe. The rib extends toward the exhaust pipe and the straightening element extends in a same direction where the rib extends. The straightening element is located closer to the body than the mounting section.

An air cleaner includes a case having an internal space, a filter element capable of partitioning the internal space into a first space and a second space, an intake port that introduces an air into the first space therethrough, an exhaust port that discharges an air from the second space, and at least one baffle part projecting toward the filter element from an inner surface of the case. The baffle part diffuses the air introduced into the first space and introduces the air to the filter element. The baffle part includes a widened baffle part. The widened baffle part includes a guide section extending along an extending surface of the filter element and a widened section larger in width than the guide section.

An air cleaner may include a filter element and a housing defining an inner space. The inner space may be divided by the filter element into a dust-side air chamber on an upstream side and a clean-side air chamber on a downstream side. Air introduced into the housing may be dischargable via an outlet pipe, to which an air flow sensor is attachable, connected to the clean-side air chamber. The outlet pipe may extend in a direction different from a normal to the filter element. A plurality of ribs may be disposed on an inner surface of a clean-side portion of the housing that defines the clean-side air chamber. The plurality of ribs may extend from a corner portion of the housing toward the filter element and the outlet pipe. A distance between adjacent ribs of the plurality of ribs may decrease in a direction toward the outlet pipe.

An internal combustion engine is provided with: two intake pipe portions for guiding intake air to two banks; and a blow-by gas recirculation pathway for leading blow-by gas to the two intake pipe portions from a cylinder head or a crank case that includes the two banks. The blow-by gas recirculation pathway includes a distribution passage which is provided between the two intake pipe portions, and which distributes the blow-by gas and allows the same to flow to the two intake pipe portions.

Present embodiments relate to an air filter adapter for use with open style engine air filters. More particularly, but without limitation, present embodiments relate to a filter adapter having a hydrocarbon trap positioned within the adapter.

A filtration media pack including a plurality of layers of filter media is disclosed. The media pack includes fluted sheets and a facing sheet, with a plurality of flutes extending between the fluted sheets and the facing sheets. In an embodiment, the fluted sheet includes a plurality of protrusions that contact the facing sheet.

The invention is based on an air filter with a filter element (28), a substantially cylindrical filter housing (12) with an unfiltered air inlet (18) and a filtered air outlet (20) arranged substantially concentrically on a first end face of the filter housing (12), wherein an extension tube (22) projects into the interior of the filter housing (12) at the filtered air outlet (20) and the filter element (28) comprises a first end plate (24) which can be plugged onto the extension tube (22).

It is proposed that the first end plate (24) is formed of plastic and comprises a sealing lip (30) formed thereon and projecting radially inwardly, which sealing lip (30) rests against the extension tube (22) in the plugged-on state.