INTAKE AIR FILTER FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to an intake air filter (1) for an internal combustion engine, especially in a motor vehicle. The inventive filter comprises a filter housing (2) having a raw air inlet (4), a pure air outlet (5), and an annular filter element (3) which is arranged in the filter housing (2) and through which air can flow in a radial manner from the outside towards the inside. Said filter element comprises a first end disk (10) on the axial end thereof, said disk comprising an opening (12) by which means the pure air outlet (5) communicates with the inside (8) of the annular filter element (3). The aim of the invention is to reduce the influence of a secondary air induction on the fresh air supply of the internal combustion engine. To this end, the filter housing (2) comprises a secondary air outlet (6), on the pure air side, and the annular filter element (3) comprises a second end disk (11) on an axial end opposing the first end disk (10). Said second end disk comprises at least one opening (17) by which means the secondary air outlet (6) communicates with the inside (8) of the annular filter element (3).