Abstract: Disclosed is an exchangeable filter element having an integrate check valve and alignment features. Also disclose is a fuel pre-filter module for pre-filtering fuel for internal combustion engines which is configured to receive the filter element. The fuel pre-filter module, for example finding beneficial use with internal combustion engines for light trucks, buses, construction, and agricultural machines.

Abstract: An air filter element for an air filter for an internal combustion engine is provided with a filter medium surrounding annularly a longitudinal axis of the air filter element. A first end disk is provided at a first end face of the air filter element, wherein the filter medium is embedded in the first end disk at the first end face. A clean air seal is configured to seal a raw side of the air filter against a clean side of the air filter. The clean air seal and the first end disk are embodied together as one piece. The clean air seal protrudes continuously radially past the filter medium. A filter housing for the air filter element is provided with a filter pot and a cover and has a clean air outlet and a raw air inlet arranged at a side wall of the filter pot.

Abstract: A filter medium is provided with a layer (A) provided with non-impregnated active carbon, a layer (B) with a solid carrier material that is impregnated with a permanganate salt, and a layer (C) with alkaline impregnated active carbon. The layer (B) and the layer (C) are arranged such that a gas flowing through the filter medium flows through the layer (B) before flowing through the layer (C). The layer (A) is arranged such that the gas flowing through the filter medium flows through the layer (A) before flowing through the layer (B) or the gas flowing through the filter medium flows through the layer (A) after flowing through the layer (C).

Abstract: An alert system for an electronic housing, including: a gas property sensor, wherein a processor is configured to receive gas property data from the gas property sensor, and configured to determine a property of a battery included in the electronic housing; a degassing unit for attaching to the electronic housing and configured to enable passage of gases and to prevent passage of liquids and solids, the gas property sensor being attached to the degassing unit at an inner side. A degassing unit comprising a base comprising an attachment means for fluid-tightly attaching to a venting opening of the electronic housing and an opening covered by a semipermeable membrane thereby forming a gas passage; a sensor module including a gas property sensor, the sensor module attachable to the base on an inner side of the base, the sensor module extending away from the semipermeable membrane towards a direction substantially perpendicular to the semipermeable membrane.

Abstract: A filter system (100) having a housing (110), a fluid inlet (102) formed in a housing wall (112), a fluid outlet (108) formed in a housing wall (120), a primary filter element (50) and a secondary filter element (10). The secondary filter element (10) arranged on a stand pipe (150) rigidly connected to one of the housing walls (120). The primary filter element (50) comprises a first end cap (52) at its top region (53) and a second end cap (54) at its bottom region (55). The housing wall (120) accommodates the stand pipe (150) and the bottom region (55) of the primary filter element (50), which are configured with mutual self-positioning elements (92, 62) to accommodate the primary filter element (50) on the housing wall (120) in a defined rotational position with respect to one or more struts (170) of the stand pipe (150).

Abstract: A functional component of a fluid filter is provided with at least one component connection element of a mechanical connection device, wherein the at least one component connection element can be connected releasably to at least one corresponding housing connection element of the mechanical connection device by a rotation/push-in movement about a virtual axis. The at least one corresponding housing connection element is provided at a filter housing of the fluid filter. The at least one component connection element has at least one securing contour that interacts with at least one joining element to secure the mechanical connection device and prevent an accidental release of the mechanical connection device, wherein the at least one joining element is connected to the filter housing after the functional component has been mounted at the filter housing.

Abstract: A fuel filter element has a screen fabric as a filter medium and a support tube supporting the screen fabric. A valve body guide for guiding a spherical valve body is provided. The valve body guide has a fluid channel and one or more support ribs for supporting the spherical valve body. The support ribs extend along a longitudinal direction of the fluid channel and project radially into the fluid channel. A filter assembly with such a fuel filter element is provided. The filter assembly has a ball valve with spherical valve body and a filter housing with a valve seat for the spherical valve body of the ball valve.

Abstract: A fluid treatment device has an exchangeable treatment unit and a connection head. A bayonet-type connection device connects connection head and treatment unit to each other by a plug-in/rotation movement about a connection axis of the treatment device and is provided with a housing connection part and a head connection part that operatively engage each other to form a connection of the bayonet-type connection device. Housing connection part and head connection part each have a mutually complementary functional element extending circumferentially about the connection axis and operatively connectable to each other. The bayonet-type connection device has a pretension element for realizing a mechanical pretension pressing the functional elements against each other. A splash guard part is provided that covers at least the connection device.

Abstract: An air filter has a filter housing having a raw air inlet and further has a filter element arranged in the filter housing. The filter element has a filter medium body and an end disk with a central primary air passage and a secondary air passage. The filter medium body annularly surrounds a longitudinal axis of the filter element and separates a raw side in the filter housing from a clean side inside the filter element. The filter housing has a primary air outlet communicating through the primary air passage with the clean side of the filter element. The filter housing has a secondary air outlet communicating through the secondary air passage with the clean side of the filter element. The secondary air outlet communicates with the secondary air passage through a channel arranged at the filter element, wherein the channel surrounds the primary air passage annularly and coaxially.

Abstract: A filter element for exchangeable installation into a filter housing has an annular filter medium with an annular seal secured directly or indirectly onto the first axial end. The annular seal having a positioning and sealing section and concentric annular sealing rings between which a sealing groove is formed. A radially outer side of the radially outer annular ring having a key locking system formed by a plurality of circumferentially spaced apart radial projections, spaced apart by radial indentations, adapted to positively engage cooperative configured geometries or key locking features of a filter housing when in an installed state, thereby locking a rotational orientation and position of the filter element.

Abstract: A filter system (100) having a housing (110), a fluid inlet (102) formed in a housing wall (112), a fluid outlet (108) formed in a housing wall (120), a primary filter element (50) and a secondary filter element (10). The secondary filter element (10) is arranged on a stand pipe (150) rigidly connected to one of the housing walls (120). The secondary filter element (10) includes a filter medium (16) forming a body (36) having at least one longitudinal seam (18) along a longitudinal axis (L) and an end cap (20) at its top region (12). The secondary filter element (10) and the stand pipe (150) are mutually connected by connection elements (22, 156). The secondary filter element (10) and the stand pipe (150) are configured with mutual self-positioning elements (30, 180) to arrange the secondary filter element (10) in a defined rotational position with respect to one or more struts (170).

Abstract: A rotary vessel for a filter assembly is rotatably mountable in a housing of the filter assembly and has a body having an open end, a cover receivable on the body to close the open end, and a releasable locking device that is manually operable to selectively lock and unlock the cover relative to the body.

Abstract: A separator for separating liquid from a gas flow is provided with a nozzle carrier element provided with a nozzle arrangement having one or more nozzles. An impact element is arranged downstream in flow direction of the gas flow at least partially opposite the nozzle arrangement. A permanent cover device is provided that covers at least one of the one or more nozzles of the nozzle arrangement. The permanent cover device reduces by at least 50% a through-flow of the gas flow through the at least one of the one or more nozzles of the nozzle arrangement compared to the one or more nozzles of the nozzle arrangement that are free from the permanent cover device. An assembly kit for producing such a separator is provided with a nozzle carrier element with nozzle arrangement and one or more nozzles, an impact element, a cover device, and a liquid reservoir.

Abstract: An acoustic component is provided with a flow channel for a fluid. The flow channel has an inlet pipe and an outlet pipe. A flow channel section is arranged between the inlet pipe and the outlet pipe, wherein the flow channel section has a silencer volume connected in the flow channel section via openings to the flow channel. A flow deflection device is arranged at least in the flow channel section with the silencer volume, wherein the flow deflection device deflects a flow of the fluid in the flow channel section with the silencer volume away from the openings. The openings in the flow channel section are arranged in a sheltered zone of the flow deflection device.

Abstract: A pleated filter media configured to receive a stream of fluid flowing in a first direction is provided. The pleated filter media includes a first filter media panel and a second filter media panel coupled to the first filter media panel at a first pleat extending in a second direction transverse to the first direction. The pleated filter media also includes a first embossment disposed on the first filter media panel and the second filter media panel. The first embossment extends in a third direction transverse to the first direction and the second direction.

Abstract: A device for reducing a carbon dioxide and water content in an enclosed air volume has first and second sorption units for sorbing carbon dioxide and water. The first and second sorption units can be transferred from a sorption mode into a desorption mode and vice versa. In the sorption mode, the first and second sorption units sorb carbon dioxide and water from raw air of the enclosed air volume. In the desorption mode, the first and second desorption units desorb carbon dioxide and water to supplied regeneration air. An air distribution device can switch the first and second sorption units, based on the carbon dioxide and water content, alternately from sorption mode into desorption mode such that, in at least one operating state of the device, one of the first and second sorption units is in sorption mode while the other is in desorption mode.

Abstract: A filter media analysis system which utilizes particulate buildup to close notches or breaks provided along a passive circuit, wherein closure of the notches results in an activation of the circuit and transmission at a particular frequency which activation and transmission can be correlated to a life cycle point of the filter media.

Abstract: A pressure equalization device for a housing has a base body and a closure element with a flow path between them being open in a normal operating state of the pressure equalization device. A flow opening in the flow path is spanned by a membrane. An emergency venting spike projects from the closure element toward the membrane. The pressure equalization device transitions after emergency venting into an emergency operating state in which the closure element gas-tightly closes the base body. A housing with such a pressure equalization device is provided. In a method for pressure equalization with such a pressure equalization device between a housing interior and an environment, gas exchange between interior and environment is performed through the membrane and the flow path between closure element and base body. During emergency venting, the membrane is destroyed by the emergency venting spike. The closure element then closes the base body.

Abstract: A water drainage device for a filter module is provided with a valve housing that has a valve bore and a valve body received at least in sections thereof in the valve bore. The water drainage device can be transferred from a closed state, in which the valve body seals in relation to a valve seat of the valve bore, into an open state, in which the valve body is lifted off the valve seat, and transferred from the open state into the closed state. The valve body, upon transfer of the water drainage device from the closed state into the open state, moves linearly along the longitudinal axis of the valve bore and away from the valve seat along or at a slant to a direction of gravity in downward direction.

Abstract: Disclosed is a hermetically closed battery degas venting unit for venting a battery enclosure/pack/housing having rechargeable vehicle batteries. The unit having a housing base equipped with a non-porous rupturable venting film closing over and sealing off the pressure venting opening. The non-porous venting film configured to deflect towards a spike in response to overpressure and to tear or rupture to release overpressure in the battery enclosure/pack/housing.