Noise filtering device for motor vehicle, has secondary volume opening in inner volume in upstream of filter via tube, and constituted by interior of structural/functional unit, where filter is formed of enclosure delimiting inner volume

摘要

The device (200) has an air filter formed of an enclosure (206) delimiting an inner volume (210), and a filter cartridge (102) arranged in the inner volume. A secondary volume (204) opens in the inner volume in upstream of the filter via a junction tube (214). The secondary volume is constituted by an interior of a hollow structural unit e.g. closed cavity of a side sill, or a hollow functional unit e.g. optical system, of a motor vehicle.