| 摘要 |
A panel-like air filter cartridge (11) with variable depth for internal combustion engines, the cartridge being equipped with a high-efficiency integrated channelling member and comprising a filter section (13), made of pleated paper and having a substantially quadrilateral shape, and an air channelling section (17), also with a substantially quadrilateral shape, arranged adjacent to the filter section (13) along one side (25) of the filter section (13) parallel to the direction of the pleats (15) in the paper, wherein, in at least one portion (27) of the filter section (13), the depth of the pleats (15) progressively increases towards the channelling section (17), and wherein the channelling section (17) has the shape of a hopper (33) provided with an air inlet opening (31), extending in a plane common to the filter section (13) and the channelling section (17), and an air outlet mouth (35) located at the bottom of the hopper (33), along a plane substantially parallel to the walls of the pleats (15) in the paper. |
