US 12,247,537 B2
Air intake system for power machines
Talon Mack, New Salem, ND (US); Christopher J. Babcock, Honolulu, HI (US); Brandon J. Kisse, Bismarck, ND (US); and Ryan Eberhardt, Bismarck, ND (US)
Assigned to Doosan Bobcat North America, Inc., West Fargo, ND (US)
Filed by Doosan Bobcat North America, Inc., West Fargo, ND (US)
Filed on Aug. 31, 2023, as Appl. No. 18/240,928.
Claims priority of provisional application 63/402,654, filed on Aug. 31, 2022.
Prior Publication US 2024/0068431 A1, Feb. 29, 2024
Int. Cl. F02M 35/16 (2006.01); B60K 11/06 (2006.01); B60K 13/02 (2006.01); B62D 25/08 (2006.01); F02M 35/10 (2006.01)
CPC F02M 35/164 (2013.01) [B60K 11/06 (2013.01); B60K 13/02 (2013.01); B62D 25/082 (2013.01); F02M 35/10144 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A power machine, comprising:
a frame including a hollow frame member that forms an enclosed frame compartment with a compartment inlet opening, a compartment outlet opening, an enclosed flow path between the compartment inlet opening and the compartment outlet opening, and a joint;
a lift arm movably secured to the frame and supported at the joint of the enclosed frame compartment for pivotal movement relative to the frame;
an engine supported by the frame and enclosed in an engine compartment separate from the enclosed frame compartment; and
an air intake system for the engine, the air intake system comprising:
an air inlet coupled to an exterior panel of the power machine;
a filter assembly including a filter enclosure and a filter element;
a first air conduit defining a first flow path between the air inlet and the compartment inlet opening, the first flow path defining a substantially vertical path for air flow between the air inlet and a bottom end of the enclosed frame compartment, from a side elevation perspective; and
a second air conduit defining a second flow path between the compartment outlet opening and the filter enclosure, the second flow path defining a path for air flow between the compartment outlet opening and the filter assembly that is substantially parallel to a front-to-back axis of the power machine, from a top plan perspective;
wherein the air intake system guides intake air flow to the engine to travel along an air intake path including the air inlet, the first flow path, the enclosed frame compartment, and the second flow path prior to entering the filter enclosure.