Abstract: A method for producing a control valve assembly using a mold comprising an upper mold half (20) and a lower mold half (21). A shaft (11) with premounted bearing blocks (13) or other functional components is placed in the mold, and the control valves subsequently are injection-molded on the shaft (11) in cavities (22) via feeders (23) to produce the control valve assembly. Afterward, the bearing blocks (13) can no longer be detached. Because they are produced separately, the bearing blocks can have a complex geometry. This allows a considerable degree of freedom in the geometric design of the control valve assembly while nevertheless ensuring cost-effective production.

Abstract: A cylindrical filter element which comprises a folded filter medium, in particular having a pleated configuration, which is annularly secured to a hollow cylinder, two expanded film axial end plates, and a support tube which is integrated into the cylindrical filter element and upon which the folded filter medium may be affixed. The support tube has an annular components adjacent respective axial end plates which has an interlocking fit with the film end plates and which may be connected to a sealing element.

Abstract: An enclosure for an air aspirating machine, such as a compressor 11 for a fuel cell drive 13, which represents a closed volume, so that said volume can be used acoustically for the air that is being drawn in. An air intake 17 is extended into the enclosure 12, which is made of a sound damping and absorbing material 18, so that the resonant cavity 19 acts as a series resonator. The air is drawn in via an air inlet 21 of the compressor 11. Alternatively, the resonant cavity can also be used as a parallel resonator in that the intake path for the air is sealed within the enclosure 12 and is provided only with sound communicating openings to the resonant cavity.

Abstract: An intake device for an internal combustion engine, comprising welded shells joined along a partition line, in which the partition line is provided with a region for producing inclined additional surfaces, which generate a transverse force Q2 due to their inclination relative to a pressure force D applied for welding the shells. This transverse force Q2 offsets a transverse force Q1 which is generated as a result of the inclination of partial regions of the partition line relative to the applied pressure force D. In this way, the transverse forces which arise during production of the intake device may be at least partially offset in the component, so that little or no forces are exerted on the molding tools, and the welding results for the intake pipe may thus be improved.

Abstract: A lost core method for producing a hollow structure which method is characterized by fixing the lost core (11) which is to be used in the mold (12) with at least one insert (14), with the insert becoming part of the workpiece (10) to be produced. This is accomplished by casting the insert (14) in the hollow structure. In this way no openings for positioning the lost core (11), which subsequently would have to be closed with a cover, are created in the hollow structure (10) which is to be produced. The described process is therefore useful to advantageously influence the reliability of the resulting molded articles, as well as to favorably influence the manufacturing costs.

Abstract: A silencer is disclosed with a bypass resonator (4; 9, 12) connected by at least one tubular connection (3a, 3b; 7, 8; 13) to a sound-transmitting channel (1). The tubular connection (3a, 3b) can have various lengths (La, Lb), tubular connections (7, 8) of different thicknesses can be connected, or the volume (V1, V2, Vn) of the bypass resonator (13) can be variable.

Abstract: A fuel filter 10 for filtering diesel fuel, in which a heater 14 is provided which at temperatures below 0° C. warms the diesel fuel in order to liquefy the diesel fuel so that a filter element 13 will not clog. The heater 14 includes a heat transfer body 29 onto which a supporting layer 35 is applied, which is thermally stable and electrically insulating. On this supporting layer 35 a heating element is provided which heats the thermal transfer body 29. A protective layer 37 is disposed over the heating element 34 in order to protect it.

Abstract: A liquid filter, suitable for the lubricating oil of an internal combustion engine, having a cartridge installation opening 15 which faces substantially downward, a positively guided oil drain 28 is proposed for draining oil from the filter when the filter cartridge is changed. The positive guidance is effected by a valve stem 29 which is connected directly or indirectly to the housing by a support tube 22. It opens a gasketed drain opening which can be connected to a hose 35 in order to assure drainage of oil, for example, to a separate oil collecting vessel. The drain opening is automatically opened by unscrewing the screw-on cover 11. No other drain plug or the like needs to be opened. This filter is especially suited for installation in confined spaces since the oil can be drained in a reliable manner.

Abstract: A filter, in particular for the lubricating oil of an internal combustion engine, which includes a pot-shaped filter housing (10), a support tube (11) disposed therein and a filter element (14) secured on the support tube (11). The filter element is essentially made up of a filtering material which is folded in a pleated manner and has plates (15 and 16) at its ends. The filter housing provides a direct seal between itself and a flange (19), and the support tube is provided with a screw-on thread (21).

Abstract: An air intake device for an internal combustion engine with at least two intake pipes, wherein each intake pipe can be closed by at least one throttle valve and wherein the throttle valves are connected to one another. The throttle valves are soft in at least one area in such a way that unevenness in the distribution of the supplied air is reduced.

Abstract: An air routing system, especially an air intake system of an internal combustion engine, which makes optimal use of available installation space by integrating a bypass channel (25) into an air intake module (10). The volume of the bypass channel also provides an acoustic shield for the collector chamber or plenum (22). The free area (13) behind the mounting flange (11) that is required for screwing in mounting bolts in order to mount the air intake module (10) is used by an air intake hood (14) which can be installed on the filter housing (15) after the air intake module has been mounted. This assures that there is a greater volume available in the filter housing (15), thereby reducing the noise at the inlet opening of the air intake module.

Abstract: A gas conducting system, particularly a compressed air system for a motor vehicle, which includes a filter containing a desiccant for removing moisture from a gas passed therethrough. The housing structure of the filter is provided with a seal with a weakened area 18, which specifically causes any overpressure to be reduced through failure of the weakened area if the pressure inside exceeds a permissible maximum. This process can be repeated multiple times until the seal with the weakened area 18 must be replaced due to aging. The weakened area can be used as a substitute for a pressure relief valve or as supplemental protection in case the pressure control valve fails, e.g., due to ice. This can prevent, for instance, bursting of the filter housing which could present a safety risk.

Abstract: An oil module for an internal combustion engine including a carrier element (10), an oil pump (12) integrated in the carrier element, an oil filter (21) which is flange-mounted to the carrier element, and at least one pressure control valve (17). The carrier element (10) is made of synthetic resin material and covers a flange area of the internal combustion engine. The housing for the oil pump (12) is arranged on the carrier element (10) in the flange area of the internal combustion engine.

Abstract: An air intake device for an internal combustion engine, in which the device includes at least one collecting vessel (10) as well as a plurality of intake ducts which extend separately toward different cylinders in the engine. The intake ducts extend into the collecting vessel and are formed from a flexible tube (16), such as a synthetic resin tube.

Abstract: A shaft bearing system having a housing including a spherical collar for the shaft. The shaft bearing is made up of a cage (19) into which the spherical collar (20) is inserted. The cage is installed in a recess (18) in a housing (16); a sleeve (21) is arranged in the interior of the spherical collar, and an axle stub (22) is inserted into the shaft bearing. The rotational movement preferably takes place between the sleeve (21) and the axle stub (22). The use of the spherical collar in a shaft bearing made up of a cage and a guide bushing has the advantage of greater flexibility in selecting the material or materials from which the housing and the rotatable component installed therein may be formed. The shaft bearing of the invention is particularly useful for accommodating a centrifuge rotor (10) in a centrifuge housing (16).

Abstract: An intake system for an internal combustion engine of a motor vehicle which includes a first unfiltered air intake (10) which is arranged at a location in the vehicle that is favorable for air intake, and a second unfiltered air intake (11) which is arranged at a location in the vehicle that is protected against road spray and splashes of water. The two unfiltered air intakes (10, 11) each open into a common line (12) which communicates with the internal combustion engine. In the first unfiltered air intake (10) there is a moisture sensor (14) which emits a signal when water enters the first unfiltered air intake (10). This signal actuates a drive member 23 which moves a flap 13 between first and second switching positions. In the first switching position, the flap 13 closes the second unfiltered air intake 11, so that no air can get into line 12 from the second unfiltered air intake 11.

Abstract: A drum controller for use in the induction system of a multi-cylinder internal combustion engine includes an induction distributor and individual induction pipes arranged next to each other and ending in a flange. The controller is arranged in a longitudinal bore hole of the individual induction pipes and is used to pen and close said tubes. The drum controller includes a moveable sleeve and a fixed core. The individual induction pipes are opened or closed when the sleeve is rotated.

Abstract: A free jet centrifuge, especially for cleaning the lubricating oil of an Internal combustion engine. The aim of the invention is to provide a centrifuge which is economical to manufacture and at the same time allows for high speeds. To this end on on side of the rotor a ball bearing (16) is provided in the housing whicb engages a closed stub shaft (14) of the rotor. In the area of the bearing is niot inqreased by the oil pressure in the centrifuge. A friction bearing is provided for the other side of the rotor which is composed of a slide bushing (20) and a bearing bushing (21). In this way a combination of materials which is optimal in terms of tribological properties can be selected. A hollow nipple shaft (19) which acts as an oil inlet (24) for the centrifuge rotor is inserted into the slide bushing (20). To increase speed even further, the invention provides for an impulse channel (30) whichi discharges through nozzles (31).

Abstract: A tubing coupling and a method for connecting tubing sections in which one tubing section is placed upon another tubing section in an overlapping manner. The first tubing section (1) is enlarged in the cold state in the area (2) where it overlaps, and the enlarged area is then placed over the second tubing section (3). Subsequent heating of the enlarged area (2) results in shrinkage of the first tubing section (1) which produces a firm seating of the first tubing section (1), for example a plastic suction tube as an air inlet tube, on the second tubing section (3), for example a flange for attachment to the cylinder head of an internal combustion engine.

Abstract: An induction device for an internal combustion engine with an intake pipe having dimensions which can be varied within predetermined limits. The intake pipe is made up of at least one resonance pipe (R) coupled via a resonance volume (43) with at least one ram pipe (S) leading to an inlet of a respective cylinder of the engine. A supercharging of the resonance pipe and/or the ram pipe can be realized in the entire intake pipe, and the dimensions of resonance pipes (R) and the ram pipes (S) can be continuously varied within predetermined limits.