AIR CLEANER OF INTERNAL COMBUSTION ENGINE Russian patent published in 1998 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: air cleaner has upper semihousing 1 and lower semihousing 2 forming inner closed space with walls and bottom, with branch pipes 3 and 4 to let pass contaminated and cleaned air, respectively. Filter member 5 placed between semihousings 1 and 2 has the shape of parallelepiped with square in base containing filtering material bent in form of corrugated tape with lines of bending. Bottom has at least one projection in form of rib or arrow directed inwards the housing and oriented along preferred direction of air flow from contaminated air branch pipe to cleaned air branch pipe. Length of rib or arrow is within (0.2-0.4) L where L is length of bent of one corrugation of tape. EFFECT: reduced hydraulic resistance of air cleaner. 2 cl, 3 dwg