Abstract: A work machine, such as a skid steer loader or a compact track loader, includes a directional air intake assembly with a directional cap positioned on an intake pipe for selectively drawing ambient air into an internal combustion engine. A cooling vent ejects air heated by a rear-mounted engine upwardly into the atmosphere. Extending higher than and adjacent to the cooling vent, the directional cap has an elongated head that blocks ingress to the intake pipe other than through an opening at a face of the cap. Selectively positioning and angling the opening between a side of the loader and an edge of the cooling vent avoids taking in debris from near the wheels or tracks, avoids taking in heated air from the cooling vent, and takes advantage of negative pressure caused by the updraft from the cooling vent to remove particulates, resulting in cleaner air for the engine at close to ambient temperature.

Abstract: An exhaust gas aftertreatment system includes an exhaust conduit having an inner wall, and a mixer mounted inside the exhaust conduit. The exhaust conduit defines a passage along a length of the exhaust conduit for exhaust gas flow therethrough. The mixer includes first bars coupled to second bars. Each first bar includes deflectors on a straight section, a first end, and a second end. The one or more of the first bars include a curved section at the first end and the second end. Each second bar includes a straight section, a third end, and a fourth end. The one or more of the second bars include a curved section at the third end and the fourth end. The mixer is mounted inside the exhaust conduit by coupling the curved section of the first bar and the second bar to the inner wall of the exhaust conduit.

Abstract: An aftertreatment system and method treats exhaust gasses produced by an internal combustion process or a similar process. The aftertreatment system includes an aftertreatment module having a sleeve extending between a first end and a second end. One or more aftertreatment bricks are axially inserted into a sleeve opening disposed in the first end of the sleeve. To prevent the aftertreatment bricks from unintentionally exiting the sleeve, a captive ring is disposed around the first end of the sleeve as a loose fitting collar. The captive ring is restrained on the sleeve by a circumferential bead protruding about the first end. The captive ring can couple with a retention ring placed adjacent the first end. When coupled to the captive ring, a portion of the retention ring extends partially across and blocks the sleeve opening, preventing the aftertreatment brick from exiting the sleeve.

Abstract: An aftertreatment system and method treats exhaust gasses produced by an internal combustion process or a similar process. The aftertreatment system includes an aftertreatment module having a sleeve extending between a first end and a second end. One or more aftertreatment bricks are axially inserted into a sleeve opening disposed in the first end of the sleeve. To prevent the aftertreatment bricks from unintentionally exiting the sleeve, a captive ring is disposed around the first end of the sleeve as a loose fitting collar. The captive ring is restrained on the sleeve by a circumferential bead protruding about the first end. The captive ring can couple with a retention ring placed adjacent the first end. When coupled to the captive ring, a portion of the retention ring extends partially across and blocks the sleeve opening, preventing the aftertreatment brick from exiting the sleeve.