Abstract: A liquid filter including a filter housing, a ring filter insert and a cover. The housing bottom contains an outlet for emptying the housing when the filter insert is removed. The filter insert includes a filter material body surrounded by front panels. A blocking element for the outlet is arranged on one front panel, and positioning elements are provided on the filter insert and on the housing. The positioning elements include an inclined plane and an engaging radially protruding nose. The inclined plane is arranged on one and the nose is arranged on the other of the filter housing part and the ring filter insert. When the ring filter insert is rotated relative to the filter housing, the inclined plane and the nose are moved in relation to each other such that they slide along each other and engage the blocking element with the outlet.

Abstract: The invention relates to a fluid filter including a filter socket with a mounting flange that can, in a sealing manner, be connected to a companion flange on an associated apparatus, wherein at least one fluid duct for supplying fluid to be filtered and one fluid duct for discharging filtered fluid extends through the flange connection, wherein, in the filter socket, at least one section of at least one fluid duct can be closed off against the companion flange by means of a sealing plate designed with at least one through opening that is sealed against the companion flange and is arranged flush with an apparatus-side fluid duct. Therein, it is provided that the surface area of the sealing plate, as seen on the plane of the flange connection, is smaller than the surface area of the mounting flange and that the sealing plate is inserted in the filter socket in a sealing manner and forms a part of the filter socket.

Abstract: Disclosed is a liquid filter for an internal combustion engine. The filter has a housing, a removable cover for closing the housing, and a replaceable filter insert that has a filter surface through which liquid can flow. The filter surface defines a boundary between a flow channel on the filtered side and a flow channel on the unfiltered side of the filter. A non-return valve allows the liquid to flow through the filter at pressure conditions that prevail when the engine is running. When the engine is shut off, the non-return valve prevents flow of liquid through the filter, thereby holding within the filter housing the liquid that was in the filter when the engine was shut off. The non-return valve is placed in the flow channel on the filtered side.

Abstract: The invention relates to an oil module of a water-cooled internal combustion engine, comprising an oil filter, oil and water channels, a water pump and a thermostatic valve which opens various temperature-dependent water circuits. One water channel starts behind the thermostatic valve in the direction of flow and leads to the suction side of the water pump inside the oil module. The oil module has a housing to which at least one additional functional component is connected. The water channel extends along two sides of the housing which are oriented at an angle in relation to each other, both sides of said channel respectively opening on both sides on at least one sub-section of their length onto the surface of the housing and being closed, respectively by means of a cover to form a channel cross-section that is closed on all sides.

Abstract: The invention relates to a liquid filter (1) comprising a filter base (10) provided with a connection flange (21) that can be connected in a sealing manner to a counter-flange (41) arranged on an associated device (4). At least one liquid channel (13, 14) extends through the flange connection (2) for respectively supplying liquid to be filtered and carrying away filtered liquid. At least one section (24) of at least one liquid channel (14) can be closed in the filter base (10) in the direction of the counterflange (41) by means of a sealing plate (3) that is formed with at least one through opening (34) which is sealed in relation to the counterflange (41) and is aligned with a liquid channel (44) on the device side. According to the invention, in the plane (20) of the flange connection (2), the surface of the scaling plate (3) is smaller than the surface of the connection flange (21), and the sealing plate (3) is inserted into the filter base (10) in a sealing manner, forming part of the same (10).

Abstract: A module for an internal combustion engine formed as a unit comprising an oil filter for lubricating oil of the engine and an oil separator for crankcase ventilation gas and which, as a whole, is attached to the engine by a flange connection with flow connections. An oil duct for oil to be filtered and an oil duct for filtered oil extend through the flange. A ventilation duct for ventilation gas and an oil return duct for separated oil also extent through the flange. A drain duct connected to the crankcase via the flange connection is provided for draining the oil filter upon a replacement of the filter element. The drain duct, the ventilation duct and the oil return duct are united in the flange connection and along at least a part of their length in the module in a single combined gas-and-oil duct.

Abstract: The invention relates to a filter, such as an oil filter for a combustion engine. The inventive filter includes a filter housing and a valve, such as a non-return valve, a filter bypassing valve or a drain valve, that is arranged in the filter housing. According to the invention, the valve body of said valve is arranged at a combination component which is provided with a connector for connecting at least one additional filter component, such as an additional valve or a filter inset, to the combination component.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: A module for an internal combustion engine formed as a unit comprising an oil filter for lubricating oil of the engine and an oil separator for crankcase ventilation gas and which, as a whole, is attached to the engine by a flange connection with flow connections. An oil duct for oil to be filtered and an oil duct for filtered oil extend through the flange. A ventilation duct for ventilation gas and an oil return duct for separated oil also extent through the flange. A drain duct connected to the crankcase via the flange connection is provided for draining the oil filter upon a replacement of the filter element. The drain duct, the ventilation duct and the oil return duct are united in the flange connection and along at least a part of their length in the module in a single combined gas-and-oil duct.

Abstract: The invention relates to a fluid filter, such as an oil filter for a combustion engine. The inventive filter comprises an exchangeable filter inset which is provided with a ring-shaped cross-section that encompasses an inner chamber. The outlet for the purified fluid is joined to the inner chamber. The inventive filter also comprises a discharge line for emptying the filter during a filter change. A central discharge dome is provided which extends into the inner chamber. Said dome, together with the filter inset is mounted in such a way as to be axially displaced between a first closing position which closes the discharge line and a second release position which releases the discharge line. According to the invention, the discharge dome is fixed to the housing and is pushed into the release position thereof when said dome is impinged upon with a spring.

Abstract: The invention relates to a combination of a main unit, preferably the engine block of an internal combustion engine, and at least one add-on functional unit, preferably an oil filter or fuel filter or a heat exchanger or an oil mist separator, which can be added on to the liquid-carrying or gas-carrying main unit of which there is at least one; with the liquid or the gas also being able to flow through said main unit; with the main unit as well as the add-on functional unit comprising matching elements of a flange connection when adding the add-on functional unit, by forming at least one liquid or gas supply channel and one liquid or gas return channel, said elements engaging each other so as to provide a tight seal.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: The invention relates to a fluid filter, such as an oil filter for an internal combustion engine, comprising a filter housing which can be closed by a screw lid, a filter element and a central, approximately tubular component which projects into the interior of the filter, whereby the central component has bearing surfaces which are used to fix said component into the filter, so that it cannot rotate. The central component and the filter housing have projections and corresponding undercuts which interact with the projections, in order to fix the central component using a detent or snap-fit connection.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.

Abstract: A liquid filter, such as an oil or gas filter, is provided which has a cup-shaped cylindrical filter housing to be mounted in a vertical orientation, with a releasable cover closing the filter housing. A liquid inlet passage and a liquid outlet passage are provided at the housing. A replaceable, substantially hollow cylindrical filter insert is vertically arranged in the housing. The filter insert being formed of a filter material member arranged between an upper and a lower disc. A collar, which is impervious to solid contaminants removed by the filter material member, extends from the lower disc upwardly along a part of the height of the filter insert, surrounding an outer circumference of the filter insert member. In this manner a collection chamber is formed for the filtered solid particles at the lower disc.

Abstract: A liquid filter, in particular for oil or fuel in an internal combustion engine, with the liquid filter comprising a filter housing with at least one liquid intake passage and at least one liquid return passage, a releasable cover which closes the filter housing liquid-tight, and an individually replaceable filter insert which can be removed from the filter housing. A hollow fastening screw is arranged centrally in the front wall of the filter housing with the front wall facing the filter connecting flange when in the mounted condition, with the fastening screw turnable in relation to the filter housing. The liquid filter may be tightly screwed to a filter connecting flange of, e.g., an internal combustion engine. A longitudinal middle axis of the filter housing and the plane of the front wall are arranged at an angle <90.degree.

Abstract: A filter and associated valve are provided which are particularly useful for the purification of oil or fuel in an internal combustion engine. The filter includes a preassembled valve unit having a sealing member, an activating member and an interposed spring element formed without a housing. The sealing member and activating member penetrate each other along a part of their axial length, guiding each other and being displaceable relative to each other in an axial direction. The relative axial displaceability is limited by a stopper provided at the activating member and/or the sealing member. The preassembled valve unit is guided axially moveable in a drain conduit of the filter after insertion of the valve unit into the conduit.

Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.