Cyclonic Flow Air Cleaner Assemblies

An air cleaner assembly comprising:

• a filter housing defined by a first end and a second end and a non-circular wall extending therebetween, the non-circular wall being defined by respective opposing curved ends and generally planar sections therebetween such that the filter housing is shaped to receive a non-circular air filter therein;
• an air inlet formed through the non-circular wall;
• a cover movably connected to the first end of the housing and shaped to allow a non-circular air filter to be associated with a cavity defined by the housing;
• an air outlet formed in the second end of the housing such that a cyclonic air flow is generated between the housing and a non-circular air filter disposed in the cavity;
• and
• an inspection window that allows visual inspection of the cavity when the cover is closed.

A method of forming an air cleaner assembly, the method comprising:

• providing a filter housing defined by a longitudinal axis and an oblong cross section shape along the longitudinal axis shaped to receive a non-circular air filter;
• forming an outlet in an end wall of filter housing;
• forming an inlet passage in an edge wall of the filter housing;
• and
• forming an intake tunnel that extends over the inlet passage and that extends in a circumferential direction about a portion of the filter housing and is shaped to initiate rotation of air communicated toward the inlet passage.