Abstract: A delivery device for the fuel of an internal combustion engine has a fuel tank (4) from which at least one fuel pump (14, 18) delivers fuel via a fuel supply line (10) and via at least one fuel filter (12, 16) to a fuel consumer (2). The consumer (2) is connected to the fuel tank (4) via a fuel return line (20). A control device (24) is connected between the supply line (10) and the return line (20). The control device establishes a fuel-conveying connection (80) between the return line (20) and the supply line (10) when the temperature in the fuel tank (4) falls below a predeterminable threshold temperature and at a predeterminable threshold pressure in the return line (20).

Abstract: A delivery device for the fuel of an internal combustion engine, having a fuel tank (4), from which at least one fuel pump (14, 18) delivers fuel via a fuel supply line (10) and at least one fuel filter (12, 16) to a fuel consumer (2), which is connected to the fuel tank (4) via a fuel return line (20), is characterized in that a control device (24) is connected between the supply line (10) and the return line (20), which control device establishes a fuel-conveying connection (80) between the return line (20) and the supply line (10) when the temperature in the fuel tank (4) falls below a predeterminable threshold temperature and at a predeterminable threshold pressure in the return line (20).

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (43), a fluid outlet (44) and a filter element (9). During the filtering process, the fluid can flow through the filter medium (11) of the filter element from the unfiltered side (14) to the filtered side (13) of the filter medium and into its inner filter cavity (17). On at least one side of the filter medium (11), a water-separating system (23) has a separating region (25) for separated water. The water separating system is connected via at least one water opening (35) that is open toward the separating region (25) to a water collecting chamber (45). The filter element (9) has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be connected to an element receptacle (47) of the filter housing (1). A fluid-conveying system (41) forms fluid paths separated from each other.

Abstract: A filter device for filtering fluids such as fuels, including diesel fuel, has a filter housing (1), within which a filter element (17) can be fastened and exchanged. The filter element has a filter medium that surrounds an inner filter cavity (25). A fluid inlet leads to the unfiltered side (27) of the filter element (17). A fluid outlet outflows filtered fluid from the filtered side (25). An equalizing tube (49) extends in the filter housing (1) up to a maximum filling level height for the filtration operation. The equalizing tube is connected to a tank return connection at a lower end of the equalizing tube and is open at an upper end (51) of the equalizing tube. The tube (49) has, at distances from the upper and lower ends of the tube, an inner control part (60) with a passage opening (61) forming a throttle point.

Abstract: A filter device for fluids with a fluid inlet (14) and a fluid outlet (24). A filter element (9) is enclosed by an end cap (21) on its lower end facing a bottom part (5) of the filter housing (1). The end cap has a passage (29) forming a fluid connection to the filter element inner filter cavity (17) and can be fixed to an element retainer (23) of the filter housing (1). The element retainer (23) includes a retaining piece (35) open towards the filter element (9) with a fluid channel (37) leading to a housing connection (24). The end cap (21) has a connecting piece (27) in the retaining piece (35). The retaining piece (35) forms an opening (43) connected to the fluid channel (37) leading to the element retainer (23). A sealing (45, 47) seals the opening from the open end of the retaining piece.

Abstract: A filter device, in particular for fluids contaminated with water admixtures, such as diesel oil, has a filter housing (1) holding at least one filter element (9). The filter medium of the filter element separates an untreated side (13) from a treated side (19) during the filtration process in the filter housing (1). A water collecting unit (5) is provided and holds separated water on the untreated side. Water separated on the untreated side (13) also reaches the collecting unit (5). Mutually separated collecting chambers (61, 67) are present in the collecting unit (5) for the water discharged at the treated side (19) and at the untreated side (13).

Abstract: A filter, in particular for fluids polluted by admixtures of water, such as diesel oil, includes a filter housing (1) receiving at least one filter element (9). During the filtering process, fluid can flow through the filter medium (11) from the outer unfiltered side (13) of the filter element into an inner filter cavity (17) forming the filtered side (19). A water passage (39) inside a pipe connector (35) of an end cap (23) forms a fluid path (51), which is separated from the other fluid path (55) that forms the connection between the inner filtered side (19) of the filter element (9) and a fluid outlet (37) of the housing (1) in the functional position of the filter element (9). The element receptacle (29) forms a through-passage (59) toward the water collecting chamber (31). Scaling assemblies (83, 87) located between the through-passage (59) and the pipe connection (35) of the end cap (23) delimit a connecting chamber (36) on the outside of the pipe connector (35).

Abstract: A filter element, in particular for treating fluids in the form of diesel fuel, has a filter medium (14) through which the fluid can flow. The filter medium (14) contains at least one active substance having antimicrobial properties.

Abstract: A filter device for filtering fluids, such as fuels, including diesel fuel, comprising a filter housing (1), inside which a filter element (17) can be fastened in an exchangeable manner, which filter element has a filter medium that surrounds an inner filter cavity (25), a fluid inlet (21) leading to the unfiltered side (27) of the filter element (17), a fluid outlet (9) for the outflow of filtered fluid from the filtered side (25), and a tank return connection (13), is characterized in that an equalizing tube (49) is provided extending in the filter housing (1) up to a maximum filling level height provided for the filtration operation, which equalizing tube is connected at its bottom end to the tank return connection (13) and is open at its top end (51), and in that the tube (49) has, at a point located at a distance from the top and bottom end of the tube, an inner control part (60), in which a through-hole (61) is located, which forms a throttle point.

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (51), a fluid outlet and at least one filter element (9). During the filtering process, fluid can flow through the filter medium (11) of the filter element from the unfiltered side (13) to the filtered side (19) of the filter medium. The filtered side surrounds an inner filter cavity (17). On one side of the filter medium (11), a water-separating device (26) and a separating region (27) for separated water are present. The filter element (9) has a passage (43) that forms a fluid connection to the filter cavity (17) and at least one water opening (47) that is open toward the separating region (27). The filter element can be fixed to an element receptacle (29) of the filter housing (1) and can be connected to a water collecting chamber (33).

Abstract: The invention relates to a fuel supply system consisting of at least one storage tank, especially a fuel tank (10), an engine (12), preferably in the form of a common rail diesel engine, that can be operated with the fuel, an engine-pump unit (32) and a pre-supply pump (16) for supplying the engine (12) with fuel from the storage tank (10), and a filter device (28) arranged between the storage tank (10) and the engine (12). The pump (34) of the engine-pump unit (32) is mounted down-stream of the filter device (28) when seen in the flow direction of the fuel and is preferably fluidically connected to the clean side of the filter device.

Abstract: A filter device for fluids, especially for fuels such as diesel fuel, includes a filter housing (1) defining a longitudinal axis (19). The filter housing has a fluid inlet (14) and a fluid outlet (24) and can accommodate at least one filter element (9). The fluid can, during filtering, flow through a filter medium (11) surrounding an inner filter cavity. The filter element (9) is enclosed by an end cap (21) on its lower end facing the bottom part (5) of the filter housing (1). The end cap has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be fixed to an element retainer (23) of the filter housing (1). The element retainer (23) includes retaining piece (35) on the bottom part (5) of the filter housing (1). The retaining piece is open towards the filter element (9) with a fluid channel (37) leading to a housing connection (24) running into it.

Abstract: A filter device for fluids, especially for fuels such as diesel fuel, includes a filter housing (1) defining a longitudinal axis (19). The filter housing has a fluid inlet (14) and a fluid outlet (24) and can accommodate at least one filter element (9). The fluid can, during filtering, flow through a filter medium (11) surrounding an inner filter cavity. The filter element (9) is enclosed by an end cap (21) on its lower end facing the bottom part (5) of the filter housing (1). The end cap has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be fixed to an element retainer (23) of the filter housing (1). The element retainer (23) includes retaining piece (35) on the bottom part (5) of the filter housing (1). The retaining piece is open towards the filter element (9) with a fluid channel (37) leading to a housing connection (24) running into it.

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (43), a fluid outlet (44) and a filter element (9). During the filtering process, the fluid can flow through the filter medium (11) of the filter element from the unfiltered side (14) to the filtered side (13) of the filter medium and into its inner filter cavity (17). On at least one side of the filter medium (11), a water-separating system (23) has a separating region (25) for separated water. The water separating system is connected via at least one water opening (35) that is open toward the separating region (25) to a water collecting chamber (45). The filter element (9) has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be connected to an element receptacle (47) of the filter housing (1). A fluid-conveying system (41) forms fluid paths separated from each other.

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (43), a fluid outlet (44) and a filter element (9). During the filtering process, the fluid can flow through the filter medium (11) of the filter element from the unfiltered side (14) to the filtered side (13) of the filter medium and into its inner filter cavity (17). On at least one side of the filter medium (11), a water-separating system (23) has a separating region (25) for separated water. The water separating system is connected via at least one water opening (35) that is open toward the separating region (25) to a water collecting chamber (45). The filter element (9) has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be connected to an element receptacle (47) of the filter housing (1). A fluid-conveying system (41) forms fluid paths separated from each other.

Abstract: A filter device purifies fluids, especially fuels contaminated with organic substances. Hydroxyl radicals are formed from water molecules contained in the fluids by a separating device (10, 14, 22). The hydroxyl radicals oxidize the impurities, especially organic substances, as much as possible and convert them into compounds such as CO2.

Abstract: The invention relates to a fluid filter (1) comprising a collecting chamber (10) for a liquid which is separated from the fluid, in addition to a filter insert (4) which comprises a filter medium which is permeable to the fluid. The collecting chamber is arranged below the filter medium (5), and a liquid sensor (19) is arranged above the deepest point of the collecting chamber (10) and the liquid sensor (19) is protected from the liquid, at least sectionally, by means of a protective wall (18, 20). Said protective wall (18, 20) extends laterally and/or below the liquid sensor (19) and a liquid permeable connection is provided from the collecting chamber (10) to the fluid sensor (19).

Abstract: The invention relates to a device for purifying water contaminated with organic substances, which is drained or collected from filters, especially fuel filters or elements of a fuel system. Hydroxyl radicals are formed from the water by means of a separating device where the hydroxyl radicals oxidize the impurities, especially organic substances, as much as possible, and convert them into compounds such as CO2.

Abstract: Coolant conditioning unit for coolant of an internal combustion engine. The unit includes a cup-shaped housing, a removable cover for closing the housing, a replaceable filter insert arranged in the housing and being detachably connected to the cover, an inlet, an anti-drain valve that is normally open during filtering, and a stop valve arranged in the inlet. The stop valve is held in an open position by the filter insert and closes when the filter insert is removed from the housing and closes before the cover has been completely separated from the housing. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A fuel filter system, especially for Diesel engines includes filter housing (1) having a fuel inlet (27) and a fuel outlet (29) and a dehydrating filter medium (23) between the inlet and the outlet for the fuel to pass through. The filter housing (1) has a collection chamber (35) for the water trapped by the filter medium from which collection chamber the water can be supplied to a water absorbing and evaporating device (49) via a controlled dispenser (45). The components of the evaporating steam are releasable into the environment through the evaporating steam outlet (51). The water absorbing and evaporating device (49) has a valve arrangement (59, 61) by which the evaporating water outlet (51) can be closed depending on an inadmissible amount of non-evaporated water (55) collected in the evaporating device (49).