Air cleaner with integral louvered precleaner

Abstract From the Canadian patent

This disclosure is directed to an air cleaner for use with internal combustion engines that cleans the air by separating particulate matter prior to filtration. The air cleaner consists of a cylindrical casing having an axial inlet for uncleaned air, a first outlet for the separated particulate matter and a second outlet for the cleaned air. A separator taking the form of a truncated cone converges from the inlet to the first outlet, and includes a plurality of louvers that define a flow path to the filter and clean air outlet. By reason of its inertia, particulate matter in the incoming uncleaned air is incapable of changing its direction to flow through the louvers, and it continues …