Abstract: The invention relates to an oil system, in particular a hydraulic oil system or a lubricating oil system, comprising a sensor for monitoring the impurity content of the oil in the oil system, the sensor detecting a value which is correlated with the impurity content. A particularly cost-effective construction is achieved, if the sensor is configured as a turbidity sensor which measures the turbidity of the oil, which has been caused by the impurity content.

Abstract: The invention relates to a liquid filter, especially an oil filter, for cleaning lubricating oil, especially for internal combustion engines of automobiles, comprising an upright filter housing which contains a receiving area for a ring-shaped filter insert that is inserted into said receiving area, an inlet channel for unclean liquid, an outlet for clean liquid, and an additional discharge channel which is exposed when the ring-shaped filter insert is removed. An eccentrically projecting pin is moulded to a lower end plate and sealingly penetrates an opening of the discharge channel when the ring-shaped filter insert is introduced into the filter housing.

Abstract: An aeration and deaeration device for the fuel tank (1) of an internal combustion engine (6) in which the aeration and deaeration are performed through an adsorption filter, the adsorption filter can be regenerated by backwashing with atmospheric air, the backwashing air is sent to the air intake area of the internal combustion engine, the composition of the backwashing air is determined and taken into account in control of the combustion process taking place inside the engine, should permit backwashing of the adsorption filter which has an influence on the composition of the engine exhaust gas.

Abstract: A filter body of an air filter, comprising a cylindrical filter member with an end disk on at least one axial end. This end disk comprises a radially effective seal which is arranged radially in relation to the arrangement on a sealing surface when the filter body is mounted in a filter housing. This end disk also comprises a supporting section which extends, relative to the filter member, in a ring shaped manner on the axially outer side of the end disk. This supporting section is designed to be axially elastic. When the filter body is mounted in a filter housing, this supporting section is supported by a support contour formed on the filter housing and extending parallel to the end disk. In this case, the filter body can be axially positioned in the filter housing.

Abstract: The invention relates to a liquid filter, especially an oil filter, for cleaning lubricating oil, especially for internal combustion engines of automobiles, comprising an upright filter housing which contains a receiving area for a ring-shaped filter insert that is inserted into said receiving area, an inlet channel for unclean liquid, an outlet for clean liquid, and an additional discharge channel which is exposed when the ring-shaped filter insert is removed. An eccentrically projecting pin is moulded to a lower end plate and sealingly penetrates an opening of the discharge channel when the ring-shaped filter insert is introduced into the filter housing.

Abstract: The invention relates to a piston engine comprising an engine block that contains several cylinders. The inventive piston engine also comprises a fresh-gas supply device that is provided with several supply pipes (1) which are arranged on the cylinders and are fixed to the engine block. Said piston engine further comprises a fuel injection system that is provided with a high-pressure supply line (5) which is allocated to the cylinders. The aim of the invention is to fix the supply pipes (1) and the high-pressure supply line (5) to the engine block in a simpler manner. Holding-down clamps (7) for the supply pipes (1) are configured on the high-pressure supply line (5) in such a way that the high-pressure supply line (5) fixes the supply pipes (1) to the engine block.

Abstract: A device for the targeted transmission of sound from an induction tract of an internal combustion engine in a motor vehicle into the interior of the motor vehicle, comprising a hollow transmission body which communicates with the induction tract on the intake side and which emits sound on the output side into the vehicle interior. In order to improve the sound emission of a device of this type, the invention proposes that the transmission body had a conduit section with a conduit cross-section and a chamber section with a chamber cross-section, whereby the chamber cross-section is larger than the conduit cross-section. The conduit section communicates with the induction tract on the intake side and opens into the intake side of the chamber section. The output side of the chamber section emits the sound into the vehicle interior.

Abstract: A ring-shaped filter element through which material can flow radially. Web material as is provided filter material which is folded in a zigzag shape and sealingly connected at its longitudinal sides relative to a ring-shaped end plate. The end plate is formed of a first area made of a first material, and extends peripherally and not covering a radial inner and/or outer edge area. A second area forms this edge area and is designed for a seal-tight placement onto a connecting part, of a second material. The ring-shaped filter element contains a second area having a second material which is foamed simultaneously onto the web material of the first material already connected fixedly with the web material.

Abstract: The invention describes a plastic embodiment for a suction system, whereby various configurations of said embodiment can be produced at low cost. According to the invention, a modular structured suction system is created. Said system comprises a plastic air distributor module which can be connected to an air feed pertaining to an internal combustion engine; several plastic, single-pieced suction pipe modules, whereby one end of the suction pipes is joined to the air distributor module and the suction pipes are respectively allocated to a combustion chamber of the internal combustion engine; in addition to at least one plastic single-pieced flange module that is connected to the other end of the suction pipe of at least one suction pipe module and which can be secured to the internal combustion engine.

Abstract: The aim of the invention is to improve the backwashing action of a backwashable filter for liquids comprising the following: a filter body which is located in a housing and which separates an incoming flow chamber from an outgoing flow chamber and a backwashing channel which lies adjacent to the filter body, is situated in the outgoing flow chamber and has a backwashing opening that faces towards the filter body, said backwashing channel also communicating with a source of a cleaning medium and said cleaning medium being subjected to pressure in the backwashing channel, and the filter body and the backwashing channel being moveable in relation to each other. To this end, the filter body has links on a side facing towards the backwashing channel which are set apart from each other in the direction of motion.

Abstract: A device for an arrangement inside a fuel tank, provided with pumps and filters for supplying and filtering fuel that is fed to an internal combustion engine, whereby the fuel is conveyed from the bottom area of the tank through a first filter into a collector chamber and fuel is conveyed from said collector chamber by means of a second pump through a second filter to the internal combustion chamber. Both pumps are arranged in a pump unit. The collector chamber is arranged vertically above the pump unit and the filter with respect to the fitting position of the device and is embodied as an open overflow container, whereby the inventive device can be produced in a rational manner and offers good functionality.

Abstract: An oil filter 1 for an internal combustion engine includes a filter body 3 and a plastic filter housing 2. Integrally formed within the filter housing, a safety wall 7 is radially fitted around the feed channel 4 and the return channel 5 creating a collecting space 6 that surrounds both channels. If seal leaks occur when the device is connected to a flange, e.g. of an engine block, the leaked oil will accumulate in the collecting space.

Abstract: The invention relates to a plate filter element for an air filter comprising a zigzag-shaped, folded strip material made of an activated carbon nonwoven material. The aim of the invention is to improve the dimensional stability of the activated carbon nonwoven material, especially in the area of an end fold. To this end, the invention provides that an end fold of the strip material comprises a sealing which is formed by gluing or fusing an upper side with an underside of the activated carbon nonwoven material.