US 12,460,609 B2
Air filter housing and an air filter element
Hans Rönnings, Gothenburg (SE); Carl Löwstedt, Onsala (SE); Mikael Karlsson, Gothenburg (SE); and Sophie Girolami, Gothenburg (SE)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Appl. No. 17/904,262
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
PCT Filed Feb. 21, 2020, PCT No. PCT/EP2020/054655
§ 371(c)(1), (2) Date Aug. 15, 2022,
PCT Pub. No. WO2021/164885, PCT Pub. Date Aug. 26, 2021.
Prior Publication US 2023/0113536 A1, Apr. 13, 2023
Int. Cl. F02M 35/024 (2006.01); F02M 35/02 (2006.01)
CPC F02M 35/02416 (2013.01) [F02M 35/0205 (2013.01); F02M 35/02475 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An air filter housing having an inner housing space adapted to receive an air filter element, the air filter housing comprising a first housing end and a second housing end located axially opposite the first housing end in relation to the inner housing space, and an outlet pipe extending from the second housing end axially into the inner housing space, the outlet pipe having a centre axis and an opening configured to receive clean air from the inner housing space, wherein at least an axial portion of the outlet pipe has a non-circular, tapering cross-sectional area measured in a plane perpendicular to the centre axis of the outlet pipe, the cross-section being trapezoidal or truncated triangle shape.