Abstract: A component includes a sub-region, where the component is produced at least in the sub-region by an additive manufacturing process. The sub-region is produced from an aluminum alloy which has 12% by weight to 40% by weight silicon, 0.3% by weight to 4% by weight copper, 0.2% by weight to 0.7% by weight magnesium, at most 1% by weight iron, at most 0.5% by weight zirconium, and a remainder which includes aluminum and further accompanying elements and/or production-related impurities that each have a mass fraction of at most 0.3 percent individually and that in total have a mass fraction of at most 1.5 percent.

Abstract: The high-temperature pathogen-disinfecting air filter includes a first layer of heated open-cell foam contained in a housing with an air pump configured to direct airflow across thereof. The first layer of the open-cell foam may be made of a metal alloy and includes a first electrically-resistive elongated body folded in a serpentine pattern. The pattern may define a sheet-like construction of the first layer making it convenient to incorporate into the air filter housing. The controller is provided to apply electrical energy to heat up the foam to a predetermined temperature, thereby providing heat to disinfect the airflow passing across the first layer. Additional foam layers and heat-resistant filters may also be provided.

Abstract: A method for producing a component includes providing a powder or a wire where the powder or the wire is formed from an aluminum alloy of 12% by weight to 40% by weight silicon, 0.3% by weight to 4% by weight copper, 0.2% by weight to 0.7% by weight magnesium, at most 1% by weight iron, at most 0.5% by weight zirconium, and a remainder of aluminum and further accompanying elements and/or production-related impurities that each have a mass fraction of at most 0.3 percent individually and that in total have a mass fraction of at most 1.5 percent. The method further includes producing at least a sub-region of the component from the powder or the wire by an additive manufacturing process.

Abstract: The disclosure relates to a method for operating a reciprocating piston engine having a valve controller, the method comprising five operating phases (Ph1, Ph2, Ph3, Ph4, Ph5), namely a regular combustion engine operation (Ph1), an overrun operation (Ph2), a shutdown process (Ph3), a restart (Ph4), as well as a transition back to the combustion engine operation (Ph5). During the transition to the overrun operation, a drag torque of the reciprocating piston engine is reduced by adjusting the valve controller. During the shutdown, the drag torque is increased. In the course of the restart that interrupts the shutdown process, the drag torque is temporarily reduced.

Abstract: The disclosure relates to a method for operating a reciprocating piston engine having a valve controller, the method comprising five operating phases (Ph1, Ph2, Ph3, Ph4, Ph5), namely a regular combustion engine operation (Ph1), an overrun operation (Ph2), a shutdown process (Ph3), a restart (Ph4), as well as a transition back to the combustion engine operation (Ph5). During the transition to the overrun operation, a drag torque of the reciprocating piston engine is reduced by adjusting the valve controller. During the shutdown, the drag torque is increased. In the course of the restart that interrupts the shutdown process, the drag torque is temporarily reduced.

Abstract: The invention relates to a hydraulic camshaft adjuster (1) having a stator (2), a rotor (3) rotatable relative to the stator (2) within a limited angular range, and a hydraulic supply (4) having two working channels (5, 6) and a shifting valve (7), wherein the two working channels (5, 6) for adjusting the rotor (3) relative to the stator (2) in two opposite directions of action can be connected to a pump (10) for pressurisation or to a reservoir (11) for pressure relief, depending on the shifting position (8, 9) of the shifting valve (7), wherein the hydraulic supply (4) has a return pump (12) that can be actuated by displacing the shifting valve (7) between its shifting positions (8, 9) and by the actuation of which one of the two work-ing channels (6) can be pressurised for returning the rotor (3) into a predetermined position.

Abstract: A hydraulic camshaft adjuster having a stator, a rotor rotatable relative to the stator within a limited angular range, and a hydraulic supply having two working channels and a shifting valve. The two working channels or adjusting the rotor relative to the stator in two opposite directions of action can be connected to a pump for pressurization or to a reservoir for pressure relief, depending on a shifting position of the shifting valve. The hydraulic supply has a return pump hat can be actuated by displacing the shifting valve between its shifting positions and by the actuation of which one of the two working channels can be pressurized for returning the rotor into a predetermined position.

Abstract: A method for producing a component includes providing a powder or a wire where the powder or the wire is formed from an aluminum alloy of 12% by weight to 40% by weight silicon, 0.3% by weight to 4% by weight copper, 0.2% by weight to 0.7% by weight magnesium, at most 1% by weight iron, at most 0.5% by weight zirconium, and a remainder of aluminum and further accompanying elements and/or production-related impurities that each have a mass fraction of at most 0.3 percent individually and that in total have a mass fraction of at most 1.5 percent. The method further includes producing at least a sub-region of the component from the powder or the wire by an additive manufacturing process.

Abstract: A harmonic drive of an electromechanical camshaft adjusters includes a drive wheel designed as a ring gear; an internally toothed output element mounted with radial play in the drive wheel; a further internally toothed element fastened to the drive wheel, the internal toothing of which has a diameter corresponding to the internal toothing of the output element; an adjuster assembly which is formed from a wave generator; an externally toothed flexible gear element which can be deformed by said wave generator, the external toothing of this flexible gear element meshing both with the internal toothing of the output element and with the internal toothing of the further element; an annular gap being formed between the further internally toothed element and an inner peripheral surface of a recess of the drive wheel. The width of the annular gap is at least partially greater than a radial play of the output element.

Abstract: The disclosure relates to a hydraulic camshaft phaser for relative rotation between a camshaft and a crankshaft. The camshaft phaser comprising two oppositely acting working chambers to which hydraulic medium pressure can be applied in a controlling manner by means of a hydraulic valve, thereby causing a relative rotation between the camshaft and the crankshaft. A volume accumulator formed by the camshaft phaser collects the hydraulic medium exiting from the working chambers. The volume accumulator is divided into two partial volume accumulators which flank the working chambers in an axial direction and which are connected to one another by a hydraulic medium line which extends axially through the camshaft phaser and is independent of the working chambers.

Abstract: The invention relates to a gear device for a motor vehicle, as is used, for example, for adjusting a camshaft in a combustion engine in order to influence the phase angle between crankshaft and camshaft. Such gear devices have to be constructed compactly and also have to have high resistance to wear, in particular upon reaching end stops during adjustment of the phase angle. For this purpose, the gear device has hydraulic end stop damping by the drive unit and the output unit having communicating cavities.

Abstract: The high-temperature pathogen-disinfecting air filter includes a first layer of heated open-cell foam contained in a housing with an air pump configured to direct airflow across thereof. The first layer of the open-cell foam may be made of a metal alloy and includes a first electrically-resistive elongated body folded in a serpentine pattern. The pattern may define a sheet-like construction of the first layer making it convenient to incorporate into the air filter housing. The controller is provided to apply electrical energy to heat up the foam to a predetermined temperature, thereby providing heat to disinfect the airflow passing across the first layer. Additional foam layers and heat-resistant filters may also be provided.

Abstract: The disclosure relates to a hydraulic camshaft phaser for relative rotation between a camshaft and a crankshaft. The camshaft phaser comprising two oppositely acting working chambers to which hydraulic medium pressure can be applied in a controlling manner by means of a hydraulic valve, thereby causing a relative rotation between the camshaft and the crankshaft. A volume accumulator formed by the camshaft phaser collects the hydraulic medium exiting from the working chambers. The volume accumulator is divided into two partial volume accumulators which flank the working chambers in an axial direction and which are connected to one another by a hydraulic medium line which extends axially through the camshaft phaser and is independent of the working chambers.

Abstract: The invention relates to a gear device (101) for a motor vehicle, as is used, for example, for adjusting a camshaft in a combustion engine in order to influence the phase angle between crankshaft and camshaft. Such gear devices (101) have to be constructed compactly and also have to have high resistance to wear, in particular on reaching end stops during adjustment of the phase angle. For this purpose, the gear device (101) has hydraulic end stop damping by the drive unit (103) and the output unit (105) having communicating cavities (113, 115).

Abstract: A component includes a sub-region, where the component is produced at least in the sub-region by an additive manufacturing process. The sub-region is produced from an aluminum alloy which has 12% by weight to 40% by weight silicon, 0.3% by weight to 4% by weight copper, 0.2% by weight to 0.7% by weight magnesium, at most 1% by weight iron, at most 0.5% by weight zirconium, and a remainder which includes aluminum and further accompanying elements and/or production-related impurities that each have a mass fraction of at most 0.3 percent individually and that in total have a mass fraction of at most 1.5 percent.

Abstract: A hydraulic camshaft adjuster has a stator, a rotor arranged movably with respect to the stator, and a central valve via which oil supply of working chambers of the hydraulic camshaft adjuster is controlled. A deformable sealing sleeve is arranged between the central valve and the rotor. The sealing sleeve has an initial length in an axial direction, and after assembly, has a deformation such that the length of the sealing sleeve changes from the initial length to an assembled length. The sealing sleeve bears at least partially in the radial direction against the central valve and against the rotor.

Abstract: A hole transport copolymer having the following Formula III is disclosed herein: In some embodiments, A is a monomeric unit having Formula Ia or Formula IIa, B is a B is a monomeric unit having at least three points of attachment in the copolymer, E is the same or different at each occurrence and is selected from the group consisting of H, D, halide, alkyl, aryl, arylamino, siloxane, crosslinkable groups, deuterated alkyl, deuterated aryl, deuterated arylamino, deuterated siloxane, and deuterated crosslinkable groups, and x, y, and z are the same or different and are mole fractions, such that x+y+z=1, and x and y are non-zero.

Abstract: A camshaft adjuster (1) is provided for an internal combustion engine of the vane cell type, having a stator (2) and a rotor (3) which can be rotated relative to the stator (2) and consists of a plurality of rotor parts (4, 5, 6) which are connected to one another, wherein the rotor (3) can be connected fixedly to a camshaft (7) of the internal combustion engine so as to rotate with it, and a first rotor part (4) is configured in such a way that the camshaft (7) is supported with contact on the first rotor part (4) in an operating state, wherein the first rotor part (4) is produced by a sintering process, and at least one first supporting surface (9), supporting the camshaft (7), of the first rotor part (4) is set geometrically by a chipless machining operation, and to a method for producing a rotor (3) for a camshaft adjuster (1) of this type.

Abstract: A hydraulic camshaft adjuster has a stator, a rotor arranged movably with respect to the stator, and a central valve via which oil supply of working chambers of the hydraulic camshaft adjuster is controlled. A deformable sealing sleeve is arranged between the central valve and the rotor. The sealing sleeve has an initial length in an axial direction, and after assembly, has a deformation such that the length of the sealing sleeve changes from the initial length to an assembled length. The sealing sleeve bears at least partially in the radial direction against the central valve and against the rotor.

Abstract: A camshaft phaser for the adjusting valve timing of a combustion engine includes a stator and a rotor that can rotate relative to the stator. The rotor is connected to one end of the camshaft via an adapter as well as via a sprocket which is fixedly mounted to the stator. The sprocket is slideably mounted about the camshaft with a first guiding section and is slideably mounted about the adapter with a second guiding section.