AIR CLEANER UNIT FOR INTERNAL COMBUSTION ENGINE

摘要

An air cleaner unit for an internal combustion engine includes a casing and a filter element (5) disposed in the casing. The casing includes a first case member (6) having a first opening (11) and a first sealing surface (13) on a periphery of the first opening (11) and a second case member (7) having a second opening (12) and a second sealing surface (14) on a periphery of the second opening (12). The first case member (6) and the second case member (7) are coupled such that the first and second openings (11, 12) are opposed in a substantially horizontal direction of a vehicle. The filter element (5) has a peripheral portion that is interposed between the first sealing surface (13) and the second sealing surface (14). The first case member (6) includes a side wall (41, 42, 43, 44) and a projection (51, 52) that projects from an inner surface of the side wall (41, 42, 43, 44). The filter element (5) is held in a substantially vertical position in the casing through the projection (51, 52).