Air inlet circuit for motor vehicle, has air filtration system comprising two distinct air filtration cases for filtering large and finer particles, respectively, where case filtering large particles is placed upstream of another case

摘要

The circuit (1) has an air filtration system comprising two distinct air filtration cases (4, 5) for filtering large particle e.g. snow, and finer particle, respectively, where the case (4) is placed upstream of the case (5). A regulator e.g. butterfly control valve (6), regulates an air flow, where the regulator, cases and an air inlet (3) are connected between them by air inlet conduits such as a rigid insert (7, 12) made of thermoplastic. The case (4) is crossed by a filter cartridge (8) made of synthetic fibers and felt, and the case (5) is crossed by a filter cartridge (13) made of paper.