Filter device for filtering intake air for internal combustion engine of car, has air filter placed in conduit, and another air filter placed in another conduit branching from portion of former conduit upstream of former air filter

摘要

The device (30) has an air filter (34) placed in a conduit (32), where the filter device is intended to enable connection of another conduit (42) branching from a portion (40) of the former conduit upstream of the air filter. Another air filter (44) is placed in the latter conduit, where a pneumatically or electrically controlled valve directs intake air into the portion of the former conduit or into the latter conduit. The valve is controlled according to a torque of an internal combustion engine desired by a user of a car.