Abstract: A housing for an internal combustion engine with a PCV valve for crankcase ventilation, including a valve housing and a valve insert, wherein the valve housing comprises a pressure-side opening which is connected to a pressure space carrying blow-by gases and a suction-side opening which is connected to a suction space, wherein the valve insert includes a valve body displaceably guided in the valve housing and a spring, wherein in an pressure-less state the valve body is pre-loaded towards, and rests on, a valve seat, wherein the valve body, exclusively controlled by a defined positive pressure in the pressure space relative to the suction space, is automatically displaceable to an open position against the force of the spring in order to provide a ventilation opening for blow-by gases between the pressure space and the suction space, wherein the valve housing includes two separate valve housing parts, wherein the valve seat is integrated into a first valve housing part and the first valve housing part is int

Abstract: A valve for crankcase ventilation of an internal combustion engine comprises a fresh-air side for connection with an intake section of the internal combustion engine, an engine side for connection with the crankcase and a valve insert movable as a whole for changing the flow resistance through the valve. Said valve inset is held inside said valve without pre-load. Said valve insert is designed to be freely displaced to a deventilation limit-stop position under negative pressure on the fresh-air side relative to the engine side, and to be freely displaced to a ventilation limit-stop position under excess pressure on the fresh-air side relative to the engine side. The valve insert is designed to open a deventilation cross-section in the deventilation limit-stop position and to open a deventilation cross-section that is different from the ventilation cross-section in the ventilation limit-stop position.

Abstract: An oil separator arrangement for an internal combustion engine incorporates a vortex chamber oil separator with a vortex chamber extending in a longitudinal direction, where the vortex chamber includes a wall extending in a longitudinal direction, a gas inlet, and a gas outlet opening. The gas inlet is disposed tangential to the wall for tangentially blowing-in of blow-by-gas into the vortex chamber, so that at least one gas vortex flow rotating helically along the wall in the longitudinal direction is generated, where at least one further oil separator is connected in parallel to the vortex chamber oil separator. The further oil separator incorporates a separation chamber with an inlet-side spring tongue automatically controlled by the applied blow-by-gas, and a baffle wall disposed downstream the spring tongue.

Abstract: A composite piston (10) for a motor vehicle transmission comprises a support body (14) and at least one rotationally symmetric annular seal comprising an elastomer sealing lip (16, 17) interacting in a sealing manner with a component (11, 12) forming a cylindrical sliding surface (21, 23), wherein the composite piston (10) can be displaced translationally relative to the component (11, 12) forming the cylindrical sliding surface. The annular seal comprises an elastomer annular bead (20, 22) displaced axially relative to the sealing lip (16, 17), wherein the annular bead is arranged to have a distance d1, d2 from the sliding surface (21, 23) in the non-loaded state larger than or equal to zero.

Abstract: The invention relates to a device for returning oil separated from blow-by gases and accumulated in an accumulation chamber (5) into the crankcase (2) of an internal combustion engine with a pump (9), wherein the pump (9) is located on a component (8) of the internal combustion engine, which component periodically changes the distance to the pump (9), and that the pump (9) can be driven by magnetic forces acting between the component (8) and the pump (9).

Abstract: A cylinder head cover for an internal combustion engine includes an oil separator with a vortex chamber extending in a longitudinal direction from a proximal end to a distal end. Said vortex chamber comprises an essentially pipe-shaped wall extending in said longitudinal direction, a gas inlet arranged at said proximal end of said vortex chamber and oriented tangentially to said essentially pipe-shaped wall, for tangentially blowing blow-by gas into said vortex chamber, such that a gas vortex flow helically rotating along said essentially pipe-shaped wall in the longitudinal direction from said proximal end to said distal end of said vortex chamber is created, and a gas outlet opening. The gas outlet opening is arranged in the region of said distal end of said vortex chamber.

Abstract: A cylinder head cover for an internal combustion engine includes an oil separator with a vortex chamber extending in a longitudinal direction from a proximal end to a distal end. Said vortex chamber comprises an essentially pipe-shaped wall extending in said longitudinal direction, a gas inlet arranged at said proximal end of said vortex chamber and oriented tangentially to said essentially pipe-shaped wall, for tangentially blowing blow-by gas into said vortex chamber, such that a gas vortex flow helically rotating along said essentially pipe-shaped wall in the longitudinal direction from said proximal end to said distal end of said vortex chamber is created, and a gas outlet opening. The gas outlet opening is arranged in the region of said distal end of said vortex chamber.

Abstract: An oil separator insert for a cover or a housing of an internal combustion engine comprises a stem member and at least one helical surface member arranged along the circumference of said stem member such that a helical channel is formed by said helical surface member. Said helical channel is open towards an outer enveloping surface of said helical surface member. Said insert is provided for being tight-fittingly inserted into a mounting in said cover or said housing, allowing blow-by gases to flow through said helical channel when being tight-fittingly inserted into said mounting. At least an outer part of said helical surface member is made substantially of an elastomer based material.

Abstract: A displaceable component includes a body having an axis and arranged for movement in at least one of an axial direction or a rotary direction about the axis. A position-defining element is fixed to the body and substantially comprising a magnetised elastomer. The position-defining element is arranged to be sensed by a sensor to determine at least one of an axial position, a rotary position or a rotary speed of the body.

Abstract: The application relates to a sealing flange for sealing a shaft, in particular the crankshaft in a motor vehicle engine, with a substantially metallic flange body (11) which has a shaft opening (12) for passage of the shaft, the sealing flange including a sealing element (15) surrounding the shaft, fastening devices (13) for fastening the sealing flange (10) to the engine to be sealed, and a plastic sensor holder (20) mounted on the flange body (11) for holding a sensor element (16), wherein the flange body (11) is weakened in the region of the sensor holder (20).

Abstract: An oil separating device for an internal combustion engine connected in a flow path of blow-by gas, loaded with oil particles, from the crankcase to the inlet manifold section of the internal combustion engine and comprising an oil separator formed with at least one passage through which the flow of oil-bearing blow-by gas is guided and deflected, the oil particles being separated at a wall which causes them to flow back to the crankcase in an oil return path, is characterized in that the at least one passage is defined by a slot of small, variable slot width and large cross sectional area, the slot width being varied against spring force of an elastic member in dependence on the volume flow of the blow-by gas through the slot.

Abstract: A device for measuring the angle of rotation of a rotating member of a machine, comprising a signal transmitting rotor which includes a magnet rim consisting of magnets having alternatingly arranged south poles and north poles and being moved with respect to a stationary measuring sensor is characterized in that each magnet or each magnet zone has a thickness which varies substantially sinusoidally in circumferential direction, having its maximum in the pole center of each magnet and/or forms an air gap with the measuring sensor varying sinusoidally in circumferential direction.

Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No seperate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.

Abstract: A shaft sealing ring, comprising an elastic sealing lip which has a sealing edge in engagement with a circumferential surface of a shaft which rotates relative to the shaft sealing ring, further comprising at least two sinusoidally curved helical elements having the same amplitudes and wavelengths which are provided on a sealing lip surface facing the surroundings and serve to convey medium that has escaped to the side of the surroundings back over the sealing edge to the side of the medium of the shaft sealing ring, the helical elements being arranged phase-shifted with respect to each other in circumferential direction and merging tangentially in circumferential direction into the sealing edge is characterized in that the ratio between the wavelength L and the amplitude A of the sinusoidally curved helical elements fulfills the relationship

Abstract: A seal for movable structural components, like piston rods or shafts, includes a carrier body made of thermoplastic material and a sealing member locked to said carrier body and made of polytetrafluoroethylene (PTFE) material. A form-lock connection is achieved by an undercut which is formed permanently in the sealing member and filled with plastic material of the carrier body.

Abstract: A rotary shaft seal having an elastomer seat for fitting into the bore of a hub or for the attachment onto a shaft comprises a seal washer, connected to a metal enforcement ring through a elastomer intermediate layer. The elastomer intermediate layer consists of a material having a chemical endurance comparable to that of PTFE, in particular of fluorocaoutchouc, and has a thickness of less than 0.5 mm, preferably in the range of 0.05 mm to 0.5 mm. This intermediate layer connects the seal washer with the enforcement ring according to a method according to the invention by simultaneously vulcanization with the elastomer seat on the outer side of the enforcement ring, wherein the injection pressure acting during injection and vulcanization is kept away from the intermediate layer.

Abstract: A cylinder head cover for a combustion engine having a cover member (2) and a seal (4) made of an elastomer, which includes a metallic stiffener (8) and which serves for sealing with respect to the cover member (2) and a cylinder head surface (12) is characterized in that the cover member (2) is made of plastics and that the cover member (2) and the seal (4) are joined to a prefabricated unit after a corona treatment of the surface (5) of the seal (4) opposite the cover member (2) and adhesion by means of an adhesive.

Abstract: A seal for movable structural components, like piston rods or shafts, includes a carrier body made of thermoplastic material and a sealing member locked to said carrier body and made of polytetrafluoroethylene (PTFE) material. A form-lock connection is achieved by an undercut which is formed permanently in the sealing member and filled with plastic material of the carrier body.

Abstract: An annular shaft seal includes an elastic sealing lip which carries a twist element at its contact surface at the side exposed to air. The twist element is designed to return any liquid which may have exited to the air side back to the liquid side of the seal over the sealing edge, with both directions of rotation of the shaft. At least two sinusoidal twist ribs having the same amplitude and phase are shifted in phase position and bear snugly and tangentially against the sealing edge.

Abstract: A shaft seal ring as well as a method and a device of manufacturing same.A shaft seal ring made of a PTFE compound comprises a sealing lip and a protective lip integrally formed therewith, wherein the sealing lip as well as the protective lip are provided with wavy recesses embossed during a manufacturing step.