Abstract: Apparatus for, and the method of, cleaning air, for engines and related uses, including an air cleaner with a body having a vertical axis and including a cylindrical wall, a solid top closure, and a bottom closure including an axial, reentrant, cleaned air outlet conduit defining with the wall a lower annular space, the wall being provided with a lateral scavenge outlet to the annular space below the upper end of the outlet conduit, with a plurality of inwardly formed spirally oriented peripheral ambient air inlet louvers spaced therearound above the upper end of the outlet conduit, and with a bleeder arrangement including a plurality of secondary ambient air inlet ports spaced around the wall above the louvers and adjacent the lid, the arrangement being designed for connection of the outlet conduit to the inlet of an engine, to enable air flow to the engine inwardly through the louvers and the bleeder means, and for connection of the scavenge outlet to aspirating apparatus such as an aspirator actuated by th

Abstract: An improved intake hood for the air inlet pipe of the internal combustion engines of vehicles having a cab, the hood comprising a right angle conduit arranged to telescope over the inlet pipe so as to provide an annular chamber for trapping water. Internal clips are provided for supporting the hood on the inlet pipe, and the former is clamped at its bottom to the latter. The other end of the hood is cut off obliquely, so that the top overhangs the bottom, to minimize direct entry of falling rain and a screen is provided to keep out foreign bodies. This portion of the hood is to be directed horizontally for axial exposure to the air flow over the cab of the vehicle. The cross section of the hood is circular at the branch connected to the inlet pipe, and rectangular at the other branch, and the transistion piece therebetween is configured to maximize the separation of rain water from the air flowing through the hood.