A vehicle cabin filter assembly comprises a filter module (30, Fig.5) having a plurality of filter elements 32. The filter elements are pleated and comprise a first particulate filter element 35, a second particulate filter element 36, and a gas filter element 37 positioned between the first and second particulate elements. The second particulate filter element is positioned downstream of the first particulate filter element. The second particulate filter element has a separation efficiency higher than the first particulate filter element. The gas filter element is bonded to one or both of the particulate filter elements and may comprise granules of an adsorbent. The filter assembly may comprise a further filter module (20, Fig.5) positioned upstream of the filter module and comprising one or more particulate filter elements 25, 26, the filter module having a separation efficiency higher than the further filter module. The filter assembly may comprise an additional filter module (40, Fig.5) positioned downstream of the filter module and comprising one or more particulate filter elements 45, the additional filter module having a separation efficiency higher than the filter module. A vehicle (1, Fig.1) comprising the filter assembly is also claimed.
Vehicle cabin filter assembly
2018-08-29
Patent
Elektronische Ressource
Englisch