Abstract: The disclosure relates to a hydraulic unit of an electrohydraulic gas exchange valve control system of an internal combustion engine. The hydraulic unit includes a hydraulic housing having a receiving opening, a piston guide, and a slave piston. The piston guide is fastened in the hydraulic housing by way of self-staking with a wall of the receiving opening. The piston guide includes an outer part that brings about the self-staking and an inner part that guides the slave piston. An inner surface of the outer part is radially interspaced from the outer surface of the inner part in an axial region of the self-staking and the outer part and the inner part are connected in an axially form-locked manner so that a first end section of the outer part facing the gas exchange valve is partially or fully formed into an outer circumferential recess of the inner part.

Abstract: The disclosure relates to a hydraulic unit of an electrohydraulic gas exchange valve control system of an internal combustion engine. The hydraulic unit includes a hydraulic housing having a receiving opening, a piston guide, and a slave piston. The piston guide is fastened in the hydraulic housing by way of self-staking with a wall of the receiving opening. The piston guide includes an outer part that brings about the self-staking and an inner part that guides the slave piston. An inner surface of the outer part is radially interspaced from the outer surface of the inner part in an axial region of the self-staking and the outer part and the inner part are connected in an axially form-locked manner so that a first end section of the outer part facing the gas exchange valve is partially or fully formed into an outer circumferential recess of the inner part.

Abstract: A pendulum tensioner, comprising a first and second tensioning arm, and a bearing sleeve configured to attach to a generator housing, wherein the bearing sleeve forms a sliding channel together with a locking sleeve, in which one of the tensioning arms is rotatably positioned with axial play.

Abstract: A pendulum tensioner, comprising a first and second tensioning arm, and a bearing sleeve configured to attach to a generator housing, wherein the bearing sleeve forms a sliding channel together with a locking sleeve, in which one of the tensioning arms is rotatably positioned with axial play.

Abstract: The invention relates to a flange assembly which takes up little installation space yet is nevertheless able to transfer high torques. According to the invention the flange assembly (5) includes a flange section (11) and a receiving section (6), wherein the flange section (11) is connected to the receiving section (6), to a holding body (10) and to a coupling body (7), wherein the holding body (10) is connected to the receiving section (6), wherein the holding body (10) is arranged in the axial direction between the coupling body (7) and the flange section (11), wherein the coupling body (7) is supported in the axial direction on the holding body (10), wherein the coupling body (7) and the flange section (11) are connected to one another in the axial direction and wherein the flange section (11) is connected to the receiving section (6) by virtue of the coupling body (7) being supported on the holding body (10).

Abstract: A pressure accumulator for a camshaft phaser of an internal combustion engine, including a housing that accommodates a piston and forms a cavity fillable with a hydraulic fluid. The cavity is configured as a hole and is closed by a cover on at least one side so as to be fluid-tight, whereby the cover is fastened to the housing by a flanged connection. A method for the production of a pressure accumulator for a camshaft phaser, including a pressure accumulator that forms a cavity, whereby a piston is placed into the cavity, and subsequently, a cover is put in place over the cavity—sealing it off towards the outside—in such a way that a material portion of the housing or of the cover creates such a positive connection between the cover and the housing that the cover is affixed in its position relative to the housing.

Abstract: Planetary roller gear drive with a spindle nut (2) that is arranged on a threaded spindle (1) and is divided into nut parts (6, 7) that can be adjusted relative to each other in the axial direction, and with a plurality of planets (3) that are arranged distributed around a periphery and are in roller engagement with the spindle nut (2) and the threaded spindle (1). An adjustment part (20) set in the axial direction against the one nut part (6) that can be adjusted in the axial direction is provided and the one nut part (6) that can be adjusted in the axial direction is arranged between this adjustment part and the other nut part (7).

Abstract: A pressure accumulator for a camshaft phaser of an internal combustion engine, including a housing that accommodates a piston and forms a cavity fillable with a hydraulic fluid. The cavity is configured as a hole and is closed by a cover on at least one side so as to be fluid-tight, whereby the cover is fastened to the housing by a flanged connection. A method for the production of a pressure accumulator for a camshaft phaser, including a pressure accumulator that forms a cavity, whereby a piston is placed into the cavity, and subsequently, a cover is put in place over the cavity—sealing it off towards the outside—in such a way that a material portion of the housing or of the cover creates such a positive connection between the cover and the housing that the cover is affixed in its position relative to the housing.

Abstract: A method of manufacturing a lift transmitting component (2), particularly for a gas exchange valve train or a fuel pump drive of an internal combustion engine (1), is provided, The lift transmitting component includes a housing (6), a bearing pin (7) fixed in a reception bore (9) of the housing (6) and a roller (8) mounted through a sliding or a rolling bearing on the bearing pin (7). The bearing pin is core-hardened over an entire axial length to a core hardness of at least 650 HV, and pin ends (10) of the core-hardened bearing pin are radially widened relative to the reception bore for enabling a connection of the bearing pin to the housing (6) through positive engagement. The hardness of the bearing pin is at the most 780 HV, the radial widening of one of the pin ends being realized with a shaping die (11) which travels axially parallel to the bearing pin (7) and applies a force to the pin end in a transition region between a periphery and a front end surface of the bearing pin.

Abstract: An electromagnetic hydraulic valve (1) is provided having a valve housing (2) with a pressurized hydraulic medium inlet channel (24), a pressurized hydraulic medium outlet channel (25), a magnet coil (3), and a valve seat (23), with a magnet armature (9) that can be excited by the magnet coil and a valve tappet (10, 10?) fixed on this armature. A valve-closing element (13) is activated by the valve tappet and that blocks the connection between the pressurized hydraulic medium channels for contact on the valve seat. The magnet armature with the valve tappet and the valve-closing element are guided so that they can move longitudinally in the valve housing and the valve tappet and the valve-closing element contact each other with facing longitudinal end sides (26, 27) in a way that is free from tensile forces.

Abstract: A lift transmitting component (1), particularly for a gas exchange valve train or a fuel pump drive of an internal combustion engine, and a method of manufacturing such a lift transmitting component comprising a housing (2) and a bearing pin (6) fixed in a reception bore (5) of the housing (2) as also a roller (4) rotatable about the bearing pin (6) and optionally mounted on a rolling bearing, said bearing pin (6) being connected to the housing (2) by positive engagement through radially widened front ends (8), the bearing pin (6) is core-hardened over its entire length with a core hardness of at least 58 HRC and its front ends (8) are widened by radial spot riveting.

Abstract: A hydraulic assembly (1), particularly for an electrohydraulic valve control of an internal combustion engine, and a hydraulic valve (2) for forming such an assembly are provided. The assembly includes a hydraulic valve with a valve housing (4) and a valve carrier (3) with a valve receiver (5) in which the valve housing is received. The valve housing has a first circumferential groove (9) and a second circumferential groove (10), with the grooves (9 and 10) being defined respectively by groove walls (13, 15 and 14, 16) and extending on two sides of a hydraulic connection (6) which extends through a peripheral wall of the valve housing (4). A bead (11, 12) formed by a plastic deformation of material of the valve carrier being received in each of the two said grooves (9, 10), so that the groove walls and the beads not only fix the valve housing in the valve receiver by positive engagement but also cooperate with each other to hydraulically seal the valve housing.

Abstract: A method of manufacturing a lift transmitting component (2), particularly for a gas exchange valve train or a fuel pump drive of an internal combustion engine (1), is provided, The lift transmitting component includes a housing (6), a bearing pin (7) fixed in a reception bore (9) of the housing (6) and a roller (8) mounted through a sliding or a rolling bearing on the bearing pin (7). The bearing pin is core-hardened over an entire axial length to a core hardness of at least 650 HV, and pin ends (10) of the core-hardened bearing pin are radially widened relative to the reception bore for enabling a connection of the bearing pin to the housing (6) through positive engagement. The hardness of the bearing pin is at the most 780 HV, the radial widening of one of the pin ends being realized with a shaping die (11) which travels axially parallel to the bearing pin (7) and applies a force to the pin end in a transition region between a periphery and a front end surface of the bearing pin.

Abstract: The ball nut of a ball screw at the inner circumference of which a ball groove is provided, wound helically about the longitudinal axis for rolling balls, and at its outer circumference a roller bearing is arranged for rotatably supporting the ball nut, wherein the roller bearing has an inner ring which is supported by means of a support ring arranged on the ball nut in the axial support direction, wherein the support ring is arranged as a result of material deformation in the axial support direction with positive engagement on the ball nut.

Abstract: An electromagnetic hydraulic valve (1) is provided having a valve housing (2) with a pressurized hydraulic medium inlet channel (24), a pressurized hydraulic medium outlet channel (25), a magnet coil (3), and a valve seat (23), with a magnet armature (9) that can be excited by the magnet coil and a valve tappet (10, 10?) fixed on this armature. A valve-closing element (13) is activated by the valve tappet and that blocks the connection between the pressurized hydraulic medium channels for contact on the valve seat. The magnet armature with the valve tappet and the valve-closing element are guided so that they can move longitudinally in the valve housing and the valve tappet and the valve-closing element contact each other with facing longitudinal end sides (26, 27) in a way that is free from tensile forces.

Abstract: A lift transmitting component (1), particularly for a gas exchange valve train or a fuel pump drive of an internal combustion engine, and a method of manufacturing such a lift transmitting component comprising a housing (2) and a bearing pin (6) fixed in a reception bore (5) of the housing (2) as also a roller (4) rotatable about the bearing pin (6) and optionally mounted on a rolling bearing, said bearing pin (6) being connected to the housing (2) by positive engagement through radially widened front ends (8), the bearing pin (6) is core-hardened over its entire length with a core hardness of at least 58 HRC and its front ends (8) are widened by radial spot riveting.

Abstract: A connection of a bearing bolt (6) in a cylindrical housing (1) of a roller tappet (2) that is actuated in a direction of a longitudinal axis (Z) is provided, especially for a tappet push-rod valve drive of an internal combustion engine. The bearing bolt (6) is supported in bore holes (7) of the housing (1), which extend in a transverse plane (XY) to the roller tappet (2), perpendicular to the longitudinal axis (Z), and is connected with a positive and/or non-positive fit to the housing (1) through material deformation. The material deformation is provided as one or more segments (9, 10), of which at least one segment (9) completely encloses a radial load zone (16) of the bearing bolt (6), and a section (15) of the bearing bolt (6) extending about the transverse plane (XY) is free from material deformation.

Abstract: A connection of a bearing bolt (6) in a cylindrical housing (1) of a roller tappet (2) that is actuated in a direction of a longitudinal axis (Z) is provided, especially for a tappet push-rod valve drive of an internal combustion engine. The bearing bolt (6) is supported in bore holes (7) of the housing (1), which extend in a transverse plane (XY) to the roller tappet (2), perpendicular to the longitudinal axis (Z), and is connected with a positive and/or non-positive fit to the housing (1) through material deformation. The material deformation is provided as one or more segments (9, 10), of which at least one segment (9) completely encloses a radial load zone (16) of the bearing bolt (6), and a section (15) of the bearing bolt (6) extending about the transverse plane (XY) is free from material deformation.