Abstract: The invention relates to an intake pipe for the intake air of an internal combustion engine. The intake pipe comprises a shift drum which provides continuous adjustment of the intake pipe length. The intake pipe comprises a housing constructed of individual disks which are joined in a sealing manner via ring grooves. The shift drum is preferably made of regulator disks so that it can be assembled without difficulty by alternately sliding a housing disk and a regulator disk on to the drive shaft. The intake channels are sealed by means of sealing lips which are joined to the regulator disks, for example by injection, and are axially supported on annular ribs forming part of the housing disks. This makes it possible to compensate for the tolerances of all of the components. Apart form being easier to assemble, an intake pipe constructed in the above manner also has a lower weight since no inserts are required to configure and seal the individual intake channels.

Abstract: A self-powered centrifugal separator for removing particulate contaminants from engine lubricant includes a rotor canister which is spun at high speed about a vertical axle by ejection of the lubricant supplied to the canister at elevated pressure by way of apertures in a bearing tube near the upper end of the canister. The canister is separated into upper separation chamber and lower outflow chamber by an annular partition wall which defines a transfer aperture between the chambers by its radially inner edge. The edge of the partition wall also supports concentrically within the separation chamber a separation funnel arrangement having an inclined surface supporting alternate separation ribs and scavenging apertures. Liquid entering the separation chamber is directed radially outwardly and under pressure gradient moves inwardly along the inclined surface. The ribs stand up sharply and create eddies which effect separation of particulate contaminants and their deposition at the surface.

Abstract: The invention concerns a filter insert for separating oil out of a flow of gas; the filter insert (1) comprising a pure gas side (2) and an untreated gas side (3) as well as support means (4) and at least two separation zones (5; 6) of different degrees of fineness.

Abstract: A valve (1, 8, 14) having a valve body (2) that is pressed against a valve seat (5, 11) by the pressure of a valve spring (3) supported against a valve cap (4, 10). The valve is held together in the area of the valve seat (5, 11) by an enclosure member (7, 9, 15) coated with an elastomer, and the enclosure member (9, 15) can also form the valve plate or seat.

Abstract: The invention concerns an intake system, in particular an intake pipe of thermoplastic plastics for the intake air of an internal combustion engine with in particular cylinder rows arranged in a V-shape. The intake system comprises at least two elements (10, 14), the first element (10) having a substantially closed shape and simultaneously forming the lower half-shell of the intake pipes. The second element (14) is designed as the upper half-shell of the intake pipes and is connected to the first element (10) by the plastics welding technique.

Abstract: An air filter, especially for the intake air of an internal combustion engine, including a housing (10) with a filter insert (17). The housing includes a raw air inlet (11) and a clean air outlet (12), as well as an opening (13) for introduction of the filter insert (17). The filter insert (17) is included of a supporting element (18) and a filter element (19) and can be positioned in contact with a sealing surface with a sealing element or gasket (15) interposed therebetween. The housing (10) includes a supporting element (16) for the filter insert (17), and the filter insert (17) can rock or pivot relative to the supporting element (16) and reaches its final position through such a pivoting or swiveling movement.

Abstract: A rotor (1) designed to be installed in the housing (16) of a free jet centrifuge, the rotor being provided with at least one inlet (3) and at least one outlet (4), which outlet is configured as a nozzle which is oriented at least substantially tangentially to the axis of rotation (13) of the rotor. The rotor is provided with receptacles for bearings for rotatably mounting the rotor, and the rotor having at least one guide element (7) which extends from an inner wall (38) to an outer wall (39) of a rotor interior space (8). At least the rotor shell (11) is made of synthetic resin material. Owing to its form, the synthetic resin centrifuge rotor can be made up of a reduced number of parts. The rotor may be composed of two elements, a base (10) and a shell (11), connected together either by a snap connection or by welding, such as vibration welding. An oil centrifuge fitted with such a rotor is particularly suitable for cleaning lubricating oil used in an internal combustion engine.

Abstract: A filter assembly for a liquid to be filtered, especially for use in a conditioning unit for the lubricating oil of a motor vehicle, including a filter cartridge (8) concentrically arranged around a center tube (9) through which a liquid stream may flow. The filter assembly includes a bypass valve (11) through which unfiltered liquid can flow into the center tube (9) if the filter cartridge becomes clogged. The bypass valve (11) is durably affixed by a valve plate (21) so that a valve body (16) is urged against the valve plate (21) by a valve spring (19) supported by supports (20) extending axially in the center tube (9).

Abstract: A process and device are disclosed for controlling air consumption in the intake tract of an internal combustion engine. Air intake in the intake tract (2) can be subdivided via at least two ram tubes (3, 4). The intake path can be continuously controlled in one of the ram tubes (4) between a totally open state and a closed state and prolong the other ram tube (3). The ram tube (4) in which the intake path can be continuously controlled between a totally open state and a closed state is preferably the shortest ram tube (4).

Abstract: An intake assembly with an optimal noise level, especially an intake duct for use as the manifold of an internal combustion engine. The noise level is optimized by introducing shunt resonators (16, 18) in collecting manifold of the intake duct, which is produced using a multi-shell technique. The inserted structures (16, 18) can be adhered or welded before the shells are joined, or they can be inserted in a preexisting duct formed of previously joined half shells. The shunt resonators (16, 18) require little space and can also be used for subsequently optimizing the intake ducts in the test phase, if the initial test results are acoustically unsatisfactory.

Abstract: A process for producing closed or open hollow parts of molded synthetic resin material in which a core (12) or mold body which extends into the mold cavity and is attached to a form element and supported on other form elements is situated between two mold half-shells. The core is supported by one or more movable stops (13-18) which can be retracted from the mold cavity. Plastic is injected into the mold via a first injection channel (22) with the core retained in position by the stops (13-18). Subsequently the retaining stops (13-18) are retracted and the mold cavity is completely filled via a second injection channel (23, 24, 25).

Abstract: A method of cleaning mineral-oil-based liquid cooling lubricants in which the cooling lubricants, which are continuously circulated in metal-working plants, are cleaned by a deposition filtration system. A continuous or discontinuous inoculation or introduction of filtering aid material is carried out in the filtration circuit during the filtration of the liquid cooling lubricant.

Abstract: A filter for filtering the lubricating oil in an internal combustion engine. The filter comprises a housing (10) having an unfiltered oil inlet and a filtered oil outlet. A filter element (16) is disposed in the housing (10). A cover (13) is provided with a safety element (20) which effectively prevents the housing (10) from being closed by the cover (13) if the filter element (16) is missing. The safety element is a tipping member affixed to the housing or the cover and which tips under the force of gravity into a blocking position when the filter element is missing.

Abstract: The invention relates to an admission system for an internal combustion engine, in particular for a motor vehicle engine. Said admission system has a connecting flange (11) for fastening the system to the internal combustion engine, a collection unit (12) which has at least one connection for supplying the intake air, and suction pipe connections the number of which depends on the number of suction pipes. Connection is achieved by suction pipes produced by a plastic blowing process.

Abstract: A filter with housing including a filter element (12) shaped as a round cartridge, a housing (10) and a housing lid (11). The housing has a raw air inlet (19) and a clean air outlet (20). The clean air outlet is provided with a connecting support (16) on which the filter element (12) is arranged. The filter element has a radial gasket on its side that faces the connecting support and is guided by the housing at its side opposite from the connecting support.

Abstract: A suction or air intake module for an internal combustion engine comprising an air suction pipe made of synthetic resin material and a flange joint at the air intake on the cylinder head housing of the internal combustion engine. The air suction pipe is a one-piece blown element of synthetic resin material and is disposed by a spring in a housing part of the air intake module with the air outlet end of the air suction pipe extending into the area of a connection between the housing part and the cylinder head housing. A flange is arranged in the connecting area between the housing part and the cylinder head housing, the flange forming a single piece with the housing part and enabling the housing part to be sealingly attached to the air inlet of the cylinder head housing.

Abstract: A mixing device is suggested for introducing a fluid into another flowing liquid, especially for use as an oil lubricator. This lubricator consists of an exterior venturi pipe 18 and an interior venturi pipe 16, whereby a feed line 13 ensures the supply of the oil to be mixed into the interior venturi pipe 16. The feed line 13 is connected to the storage tank 28 of the lubricator by means of a butterfly valve 30 and a uptake 29. A control insert 20 is mounted in the ring-shaped cross-section between the interior pipe 16 and the flow channel 18. This has elastic blades in particular, which largely close the circular ring section at lower amounts of throughput of the air, such that even in this operational state, consistently good mixing results of the oil with the air can be guaranteed in interior pipe 16.

Abstract: A filter cartridge, in particular for an intake air filter of an internal combustion engine, the cartridge including a hollow cylindrical filtering body (10) which is provided on at least one end face with an end disk. The end disk carries a sealing element (12) which is made up of a supporting medium and a sealing medium (15). The sealing medium is preferably composed of a silicone or a silicone foam.

Abstract: An intake manifold for the supply of air for an internal combustion engine with a fuel distributor, in which the fuel distributor is fixed to the intake manifold through a plug-in, catch or snap connection.

Abstract: Disclosed is a subunit for a machine driven by an internal combustion engine, in which the components are integrated in a module and wherein means have been provided to connect the module to the internal combustion engine.