Abstract: An end cap for a filter element may include an element receiver configured to be coupled to a tubular member, and a base passage receiver in flow communication with the element receiver. The end cap may further include an end cap barrier extending outward from the base passage receiver, the end cap barrier including a first side configured to face a filter base. The end cap may also include end cap flow passages configured to provide flow communication between filter media and a filter base, and including a passage opening spaced a first distance from the first side. The end cap may further include a barrier edge and a peripheral seal, wherein an uppermost surface of the peripheral seal terminates a second distance from the first side of the end cap barrier, wherein the first distance is greater than the second distance.

Abstract: A center tube for use with a filter element includes a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a rectangular shape.

Abstract: A sensing system for sensing degradation of a machine fluid is disclosed. The sensing system may comprise a capsule including a dissolvable element. The dissolvable element may be configured to at least partially dissolve when placed in contact with the machine fluid having an acid content indicative of degradation of the machine fluid. The sensing system may further comprise a tracer encapsulated by the capsule. The tracer may be at least partially released from the capsule when the dissolvable element at least partially dissolves.

Abstract: A system comprising a drain for a fuel-water separator (FWS) assembly and a sensor is disclosed. The sensor may include a sensing element that is attached to the drain, wherein, when the drain engages the FWS assembly, a cavity is formed by an endcap at least partially within the FWS assembly and by at least one of the drain or the sensor, wherein the sensing element is exposed within the cavity, wherein a first side of the cavity is at least partially open, and wherein a second side of the cavity is formed by at least one of the drain or the sensor, wherein the cavity is configured to receive fluid through the first side and collect the fluid in the cavity to trigger the sensing element. Numerous other aspects and systems are disclosed.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A sensing system for detecting degradation of a machine fluid is disclosed. The sensing system may comprise a tag having electrical contacts. The tag may be configured to transmit a wireless signal when the electrical contacts are in electrical communication. The sensing system may further comprise a dissolvable element separating the electrical contacts and obstructing electrical communication between the electrical contacts. The dissolvable element may be configured to dissolve and allow electrical communication between the electrical contacts when an acid content of the machine fluid reaches a level indicative of the degradation of the machine fluid.

Abstract: A filter housing is provided. The filter housing includes a circumferential rib provided on an outer surface thereof. The filter housing also includes a first longitudinal rib provided on the outer surface thereof. The first longitudinal rib connects and extends away from the circumferential rib along a length of the filter housing. The first longitudinal rib defines a first thickness thereof. The first thickness tapers towards the circumferential rib. The filter housing further includes a second longitudinal rib provided on the outer surface thereof. The second longitudinal rib is provided opposing the first longitudinal rib. The second longitudinal rib connects and extends away from the circumferential rib along the length of the filter housing. The second longitudinal rib defines a second thickness thereof. The second thickness tapers towards the circumferential rib.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A center tube for use with a filter element includes a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a rectangular shape.

Abstract: A sensing system for detecting degradation of a machine fluid is disclosed. The sensing system may comprise a tag having electrical contacts. The tag may be configured to transmit a wireless signal when the electrical contacts are in electrical communication. The sensing system may further comprise a dissolvable element separating the electrical contacts and obstructing electrical communication between the electrical contacts. The dissolvable element may be configured to dissolve and allow electrical communication between the electrical contacts when an acid content of the machine fluid reaches a level indicative of the degradation of the machine fluid.

Abstract: A center tube for use with a filter element comprises a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a rectangular shape.

Abstract: A filter element may include a first end cap including an end cap barrier including an inner end cap aperture and end cap flow passages configured to provide flow communication between the of interior the filter element and the exterior of the filter element. The filter element may also include a first tubular member having a first end coupled to the first end cap to provide flow communication between the inner end cap aperture and a second end of the first tubular member. The filter element may further include first filter media extending around the first tubular member, an intermediate barrier coupled to a second end of the first tubular member, and second filter media having different filtering characteristics than the first filter media. One of the first filter media and the second filter media may include a coalescing-type media configured to promote separation of a first fluid from a second fluid.

Abstract: A filter housing is provided. The filter housing includes a circumferential rib provided on an outer surface thereof. The filter housing also includes a first longitudinal rib provided on the outer surface thereof. The first longitudinal rib connects and extends away from the circumferential rib along a length of the filter housing. The first longitudinal rib defines a first thickness thereof. The first thickness tapers towards the circumferential rib. The filter housing further includes a second longitudinal rib provided on the outer surface thereof. The second longitudinal rib is provided opposing the first longitudinal rib. The second longitudinal rib connects and extends away from the circumferential rib along the length of the filter housing. The second longitudinal rib defines a second thickness thereof. The second thickness tapers towards the circumferential rib.

Abstract: A sensing system for sensing degradation of a machine fluid is disclosed. The sensing system may comprise a capsule including a dissolvable element. The dissolvable element may be configured to at least partially dissolve when placed in contact with the machine fluid having an acid content indicative of degradation of the machine fluid. The sensing system may further comprise a tracer encapsulated by the capsule. The tracer may be at least partially released from the capsule when the dissolvable element at least partially dissolves.

Abstract: A fluid filter system is provided having a canister, a bowl, and a filter positioned inside the canister. The filter includes a sleeve defining a reservoir with filter media surrounding the reservoir. A cover is disposed on a first end of the sleeve and an end cap is disposed on a second end of the sleeve, the end cap having a lid extending across the filter media and sleeve. The bowl includes a sidewall, a floor, and an upper edge. The bowl further includes an upstanding post extending from a floor and the lid further includes a pocket formed along the lid. The pocket defines a cavity disposed outside of the reservoir and includes a threaded portion configured to threadably receive the upstanding post of the bowl. An O-ring seal provides a seal between the bowl and the canister when the upstanding post is threaded to the pocket.

Abstract: A sensing system for detecting degradation of a machine fluid is disclosed. The sensing system may comprise a tag having electrical contacts. The tag may be configured to transmit a wireless signal when the electrical contacts are in electrical communication. The sensing system may further comprise a dissolvable element separating the electrical contacts and obstructing electrical communication between the electrical contacts. The dissolvable element may be configured to dissolve and allow electrical communication between the electrical contacts when an acid content of the machine fluid reaches a level indicative of the degradation of the machine fluid.

Abstract: A filter element may include a tubular element, first and second end caps, each associated with an opposite end of the tubular element, filter media positioned around the tubular element and between the first and second end caps, a biasing element associated with the tubular element, and a retainer element positioned at a first end of the tubular element. The retainer element may include a retainer aperture including a central circular portion and two opposite lateral slots extending from opposite sides of the central circular portion, and two arcuate shoulder segments extending between opposite sides of the two opposite lateral slots.

Abstract: A center tube for use with a filter element comprises a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a a rectangular shape.

Abstract: A filter element may include a tubular member including a partition at least partially defining first and second chambers. The tubular member may further include at least one outlet aperture and at least one inlet aperture configured to provide flow communication exiting from the first chamber and flow communication into the second chamber, respectively. The filter element may be configured such that fluid passing through the filter element from an inlet port to an outlet port passes through the first chamber, a filter medium, and the second chamber. The filter element may also include an end cap having a return aperture configured to provide flow communication between fluid exiting from the first chamber and fluid entering the inlet port, wherein a portion of fluid exiting from the first chamber is returned to the inlet port for recirculation through the first chamber.

Abstract: A flow cap may include an outer ring, an inner ring, an inlet portion, and an outlet portion. The inlet portion may include first portions of the outer and inner rings, and a plurality of arms extending between the first portions of the outer and inner rings, wherein the arms at least partially define an inlet aperture configured to provide flow communication between an inlet port of a filter base and an interior portion of a filter element. The outlet portion may include second portions of the outer and inner rings, and a plate including an outlet aperture providing flow communication between an outlet port of the filter base and an exterior portion of the filter element. The outlet portion may also include a wall, wherein the plate and the wall prevent flow communication between fluid entering the inlet portion and fluid entering the outlet portion.