CAMSHAFT ADJUSTER HAVING A HYDRAULIC CHAMBER SEALING ELEMENT THAT CAN BE SWITCHED TO AND FRO TO ACHIEVE HYDRAULIC FREEWHEELINGT PART

A camshaft adjuster for an internal combustion engine of a motor vehicle, having a stator and a rotor accommodated inside the stator such that the rotor can rotate relative to said stator, wherein the rotor has at least one rotor vane, which extends in the radial direction towards an inner wall of the stator and forms a first hydraulic chamber and a second hydraulic chamber between the stator and the rotor, wherein a connection gap remains between a rotor vane end face and the inner wall of the stator and fluid-connecting the first hydraulic chamber and the second hydraulic chamber. A sealing element is guided in a radially movable manner in the rotor vane end face to and fro between a sealing position, in which the sealing element bears against the inner wall of the stator to seal off the connection gap, and a connecting position, in which the first and second hydraulic chambers are connected to each other through the connecting gap. 110-. (canceled)11. A camshaft adjuster for an internal combustion engine of a motor vehicle , the camshaft adjuster comprising:a stator and a rotor accommodated within the stator in a rotatably supported manner, the rotor including at least one rotor vane extending in a radial direction to an inner wall of the stator and forming a first hydraulic chamber and a second hydraulic chamber between the stator and the rotor, a connecting gap remaining between the rotor vane end face and the inner wall of the stator, the connecting gap fluidically connecting the first hydraulic chamber and the second hydraulic chamber; anda sealing element radially movably guided within the rotor vane end face and switchable optionally back and forth between a sealing position, the sealing element resting against the inner wall of the stator, sealing the connecting gap, in the sealing position, and a connecting position, the first and the second hydraulic chambers being connected by the connecting gap in the connecting position.12. The camshaft adjuster as ...

CAMSHAFT ADJUSTER INCLUDING A BLOCKING PIN FOR PRESSURE RELIEF OF THE HYDRAULIC CHANNEL COVERED BY A SLOTTED GATE

A camshaft adjuster for an internal combustion engine, having a stator, a rotor mounted rotatably in the interior of the stator, and a locking cover connected to the stator. A hydraulically actuatable locking element is received in the rotor and engages into the locking cover in at least one blocking position, so as to block a rotation of the rotor relative to the stator, and is arranged in at least one unlocking position so that the rotor can be rotated relative to the stator. A blocking pin acts in at least one hydraulic channel connected hydraulically to the locking element so that the hydraulic channel is connected to a recovery tank or is disconnected from the recovery tank depending on the position of the blocking pin, wherein the hydraulic channel has a first channel section in the locking cover, and the first channel section and the blocking pin are arranged so that the blocking pin seals the hydraulic channel from the recovery tank in at least one first end position, in a first pressure range which prevails in the hydraulic channel by way of contact with the locking cover.

CAMSHAFT ADJUSTEMENT DEVICE FOR AN INTERNAL COMBUSTION ENGINE

The invention relates to a camshaft adjustment device for an internal combustion engine, having a chamber housing, an actuating rotor which is received in the chamber housing and which can be pivoted about an axis which is concentric with respect to the circumferential axis of the chamber housing, wherein the actuating rotor has a plurality of dividing flanks which rise up radially over a cylindrical base surface of the actuating rotor, and in each case divide pressure chambers which are formed in the chamber housing into a first chamber section and a second chamber section. Sealing strips are inserted into the actuating rotor. The sealing strips form a fluid passage path. The latter can be blocked via a check valve device in such a way that the fluid passage is possible only in one direction. 1. A camshaft adjustment device for an internal combustion engine , comprising:a chamber housingan actuating rotor that is held in the chamber housing and pivots about an axis concentric to an axis of rotation of the chamber housing,sealing strips that are inserted into the actuating rotor that divide each pressure chamber formed in the chamber housing into a first chamber section and a second chamber section, anda fluid connection path formed in each said sealing strip, said fluid connection path connects the first and the second chamber sections and said fluid connection path is blockable by a check valve device.2. The camshaft adjustment device according to claim 1 , wherein the fluid connection path is formed by a hole or recess that extends through the sealing strip.3. The camshaft adjustment device according to claim 1 , wherein the check valve device comprises a valve plate.4. The camshaft adjustment device according to claim 3 , wherein the valve plate is made from a steel material.5. The camshaft adjustment device according to claim 3 , wherein the valve plate is connected to a spring arm claim 3 , and said spring arm has a smaller width than a head section of the ...

CAMSHAFT ADJUSTER INCLUDING A DISCHARGE VALVE

A hydraulic camshaft adjuster (), in particular a vane-type hydraulic camshaft adjuster, including a rotor () and a stator () which are mounted to rotate with respect to each other, a cover () fixed on the stator (), including a locking receiver and at least one locking pin () accommodated in the rotor (), the locking pin being slidable in the axial direction and prestressed in the direction of the locking receiver, and a hydraulic channel () to apply pressure of the locking pin () against the prestress of same, the hydraulic channel being able to be filled and emptied with a hydraulic medium via a central screw, wherein in the rotor () at least one additional discharge channel () fluidically connected to the hydraulic channel () is formed with a discharge valve (), wherein preferably the discharge valve () closes the discharge channel () when the locking pin () is pressurized and opens the discharge channel when the hydraulic pressure acting on the locking pin () falls. 110-. (canceled)11. A hydraulic camshaft adjuster comprising:a rotor and a stator supported rotatably relative to one another;a cover fixed to the stator and including a locking receptacle;at least one locking pin accommodated in the rotor in such a way that the locking pin is displaceable in the axial direction, and is pretensioned with pretension in a direction of the locking receptacle;a hydraulic channel for acting with pressure on the locking pin against the pretension, and Tillable with a hydraulic medium emptiable via a central screw; andat least one additional discharge channel fluidically connected to the hydraulic channel and including a discharge valve formed in the rotor.12. The hydraulic camshaft adjuster as recited in wherein the discharge valve is integrated in such a way that the discharge valve closes the discharge channel when the locking pin is acted on by pressure claim 11 , and opens the discharge channel when the hydraulic pressure acting on the locking pin drops claim 11 , or ...

CAMSHAFT PHASER

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. 1. A camshaft phaser for adjusting a valve timing of a combustion engine , the camshaft phaser comprising:a stator;a rotor rotatable relative to the stator, wherein the rotor is connected via an adapter to an end of a camshaft,a chain sprocket connected to the stator;wherein the chain sprocket is mounted on the camshaft with a first guiding section and on the adapter with a second guiding section.2. The camshaft phaser according to claim 1 , wherein a passage opening for the centering of the camshaft and of the adapter is within the chain sprocket.3. The camshaft phaser according to wherein a ledge is formed on the adapter and configured to center the adaptor with the rotor.4. The camshaft phaser of wherein the adapter and the chain sprocket are produced in one respective sintering process.5. The camshaft phaser of claim 1 , wherein a contact surface between the rotor and the adapter claim 1 , as well as a contact surface between the adapter and the camshaft claim 1 , are equipped with a friction-enhancing structure.6. The camshaft phaser of claim 1 , wherein an elevation or a depression is formed at the adapter for a form-fitting connection with the rotor or with the camshaft.7. The camshaft phaser of claim 1 , wherein a recess is formed at the adapter for accommodating a protection against twisting or for oil supply through the adapter.8. The camshaft phaser of claim 7 , wherein the recess is a passage opening.9. The camshaft phaser of claim 7 , wherein the protection against twisting includes a pin.10. A camshaft phaser assembly comprising:a ...

CAMSHAFT ADJUSTER

A camshaft adjuster including a stator, a rotor and a pressure medium supply, at least one chamber being formed on the stator, which is divided into two working chambers by at least one vane formed on the rotor or rotatably fixedly connected to the rotor is provided. A pressure medium is applicable to each of the two working chambers via the pressure medium supply in such a way that a pressure of the pressure medium may be increased in each of the working chambers to the extent that the pressure increase results in a rotation of the rotor. A switchable valve is formed in the vane of the rotor, which, in a first switching position of the valve, allows a flow of the pressure medium from a first working chamber through the vane into a second working chamber, in a second switching position the valve hydraulically separating the working chambers from each other. A locking element, which fixes the vane in a defined position with respect to the chamber, is designed to control an inflow or outflow of the pressure medium into or out of a working chamber. The pressure medium supply includes an oil pump, a supply line connecting the oil pump to at least one of the working chambers and a hydraulic accumulator, which differs from the oil pump and the supply line. 110-. (canceled)11. A camshaft adjuster comprising:a stator;a rotor;a pressure medium supply;at least one chamber being formed on the stator, the at least one chamber being divided into two working chambers by at least one vane formed on the rotor or rotatably fixedly connected to the rotor;a pressure medium being applicable to each of the two working chambers via the pressure medium supply in such a way that a pressure of the pressure medium in a particular working chamber of the two working chambers is increasable so that a pressure increase results in a rotation of the rotor;a switchable valve being formed in the rotor, the switchable valve, in a first switching position of the valve, permitting the pressure medium ...

Hydraulic camshaft adjuster

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.

Hydraulic camshaft adjuster having a mechanical and a hydraulic ratchet

The disclosure relates to a hydraulic camshaft adjuster having a stator, which is synchronously rotatable with a crankshaft of the internal combustion engine, a rotor rotatably arranged relative to the stator and synchronously rotatable with a camshaft, two groups of working chambers that can each be loaded with a pressure medium in a pressure medium circuit, and a central locking device for locking the rotor in a defined position relative to the stator. The stator is delimited on a first front end by a multi-part locking cover. The multi-part locking cover has a first locking cover and a second locking cover. A first stage of a mechanical ratchet is formed on the first locking cover, and at least one further stage of the mechanical ratchet is formed on the second locking cover.

Hydraulic camshaft adjuster, and method for operating the hydraulic camshaft adjuster

A hydraulic camshaft adjuster adjusts the control time of gas exchange of an internal combustion engine. A reservoir for storing pressure medium is formed on a cover of the hydraulic camshaft adjuster. An overflow opening of the cover is dimensioned such that a volume of pressure medium remains in the reservoir when the hydraulic camshaft adjuster is stationary. This ensures that pressure medium is supplied to the return valve of a central locking mechanism when the engine is running.

Harmonic drive

A harmonic drive ( 1 ), including a wave generator ( 8 ), a flexible, externally toothed gear component ( 14 ), in particular in the form of a flex ring, which can be deformed by said wave generator, and at least one internally toothed gear component ( 4, 5 ) that meshes with the flexible, externally toothed gear component ( 14 ). The flexible, externally toothed gear component ( 14 ) has a non-circular basic shape in relation to its mechanically non-loaded state.

Camshaft adjuster

A camshaft adjuster ( 1 ) is provided, including a drive element ( 2 ) and a driven element ( 3 ), which can be rotated in relation to the drive element within an angular range and can be connected to a camshaft, wherein pressurizable working chambers ( 4 ) for rotating the drive element ( 2 ) with respect to the driven element ( 3 ) are formed between the drive element ( 2 ) and the driven element ( 3 ), wherein the camshaft adjuster ( 1 ) has a volume accumulator ( 5 ) for collecting hydraulic medium, wherein the volume accumulator ( 5 ) supplies the hydraulic medium to a vacuum-pressurized working chamber ( 4 ) via a check valve ( 6 ) in that the vacuum in the working chamber ( 4 ) opens the check valve ( 6 ), characterized in that the check valve ( 6 ) is arranged in an axial position between the working chamber ( 4 ) and the volume accumulator ( 5 ), and the volume accumulator ( 5 ) is formed by a cover element ( 7 ) connected to the drive element ( 2 ) for conjoint rotation.

Camshaft adjusting system having a hydraulic camshaft adjuster and an electric camshaft adjuster

This disclosure relates to a camshaft adjusting system for a motor vehicle, having an inner camshaft, and an outer camshaft, which is arranged coaxially with and radially outside the inner camshaft. The camshaft adjusting system further includes an input wheel, which is designed to introduce torque into the camshafts, a hydraulic camshaft adjuster, which acts on the outer camshaft to adjust the phase angle of the outer camshaft relative to the input wheel, and an electric camshaft adjuster, which acts on the inner camshaft to adjust the phase angle of the inner camshaft relative to the input wheel. The electric camshaft adjuster engages in the hydraulic camshaft adjuster at least partially in an axial direction. 1. A camshaft adjusting system for a motor vehicle , comprising:an inner camshaft;an outer camshaft arranged coaxially with and radially outside the inner camshaft;an input wheel configured to introduce torque into the camshafts;a hydraulic camshaft adjuster which acts on the outer camshaft to adjust a phase angle of the outer camshaft relative to the input wheel; andan electric camshaft adjuster which acts on the inner camshaft to adjust a phase angle of the inner camshaft relative to the input wheel; andthe electric camshaft adjuster engages in the hydraulic camshaft adjuster at least partially in an axial direction.2. The camshaft adjusting system as claimed in claim 1 , wherein an output shaft connected for conjoint rotation to a rotor of an electric motor of the electric camshaft adjuster is coupled by a coupling to an output ring gear connected for conjoint rotation to the inner camshaft.3. The camshaft adjusting system as claimed in claim 2 , wherein the output ring gear is mounted on a radial inner side of a rotor of the hydraulic camshaft adjuster claim 2 , the rotor being rotatable relative to a stator of the hydraulic camshaft adjuster.4. The camshaft adjusting system as claimed in claim 3 , wherein oil passages extending in a radial direction ...

COUPLING FOR A CAMSHAFT PHASER ARRANGEMENT FOR A CONCENTRIC CAMSHAFT ASSEMBLY

A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, a coupling, and at least one timing wheel connected to at least one of the first or second camshaft phaser. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The coupling includes a coupling ring and at least one coupling pin that torsionally connects the first camshaft phaser to the second camshaft phaser. The coupling provides for radial and axial movement between the first camshaft phaser and the second camshaft phaser. 1. A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts , the camshaft phaser arrangement comprising:a first camshaft phaser configured to be connected to one of the inner or outer camshafts;a second camshaft phaser configured to be connected to the other of the inner or outer camshafts;the first camshaft phaser axially adjacent to the second camshaft phaser; and, [ at least one first radial slot configured to: (1) connect the coupling ring to one of the first or second camshaft phaser and, (2) provide for a first radial movement between the first camshaft phaser and the second camshaft phaser; and,', 'at least one second radial slot configured to provide for: (1) a second radial movement between the first camshaft phaser and the second camshaft phaser, and (2) an axial movement between the first camshaft phaser and the second camshaft phaser; and,, 'a coupling ring having, 'at least one coupling pin, a first end received by the at least one second radial slot, and a second end connected to the other of the first or second camshaft phaser., 'a coupling arranged to torsionally connect the first camshaft phaser to the second camshaft phaser, the coupling comprising2. The camshaft phaser arrangement of claim 1 , wherein a pathway for ...

Camshaft adjuster with control sleeve

Hydraulischer Nockenwellenversteller (1) für eine Verbrennungskraftmaschine, mit einem Stator (3), einem in radialer Richtung innerhalb des Stators (3) angeordneten und gegenüber dem Stator (3) verdrehbaren Rotor (5), wobei zwischen dem Stator (3) und dem Rotor (5) eine Vielzahl von wahlweise druckmittelbeaufschlagbaren ersten und zweiten Hydraulikkammern (7, 8) ausgebildet sind, und mit einem innerhalb des Rotors (5) angeordneten hydraulischen Zentralventilschraube (9), die zur Steuerung einer wahlweisen Druckmittelbeaufschlagung der ersten und zweiten Hydraulikkammern (7, 8) wenigstens einen ersten Druckmittelkanal (10) und einen zweiten radialen Druckmittelkanal (11) aufweist, die mit der ersten und/oder der zweiten Hydraulikammer (7, 8) fluidisch verbindbar sind, dadurch gekennzeichnet, dass zwischen dem Rotor (5) und der Zentralventilschraube (9) eine relativ dazu axial verschiebbare Steuerhülse (12) angeordnet ist, durch die die ersten und zweiten Hydraulikkammern (7, 8) wahlweise kurzschließbar sind, um einen Druckmittelaustausch zwischen den beiden Hydraulikkammern (7, 8) zu ermöglichen. Hydraulic camshaft adjuster (1) for an internal combustion engine, comprising a stator (3), a rotor (5) arranged radially inside the stator (3) and rotatable relative to the stator (3), between the stator (3) and the rotor (5) a plurality of selectively druckmittelbeaufschlagbaren first and second hydraulic chambers (7, 8) are formed, and with a within the rotor (5) arranged hydraulic central valve screw (9) for controlling an optional pressure medium loading of the first and second hydraulic chambers (7, 8) has at least one first pressure medium channel (10) and a second radial pressure medium channel (11), which are fluidically connectable to the first and / or the second hydraulic chamber (7, 8), characterized in that between the rotor (5) and the Central valve screw (9) is arranged a relative thereto axially displaceable control sleeve (12) through which the first and ...

Phaser

Die Erfindung betrifft einen Nockenwellenversteller (1) zum Verstellen der Ventilsteuerzeiten eines Verbrennungsmotors mit einem Stator (2) und einem relativ zum Stator (2) verdrehbaren Rotor (3), wobei der Rotor (3) über einen Adapter (4) mit einem Ende (6) einer Nockenwelle (5) verbunden ist, sowie mit einem Kettenrad (7), welches drehfest mit dem Stator (2) des Nockenwellenverstellers (1) verbunden ist. Dabei ist das Kettenrad (7) mit einem ersten Führungsabschnitt (8) auf der Nockenwelle (5) und mit einem zweiten Führungsabschnitt (9) auf dem Adapter (4) gelagert. Die Erfindung betrifft ferner ein Verfahren zur Herstellung eines solchen Nockenwellenverstellers. The invention relates to a camshaft adjuster (1) for adjusting the valve timing of an internal combustion engine having a stator (2) and a rotor (3) rotatable relative to the stator (2), the rotor (3) being connected to one end (4) via an adapter (4). 6) of a camshaft (5) is connected, and with a sprocket (7) which is non-rotatably connected to the stator (2) of the camshaft adjuster (1). In this case, the sprocket (7) with a first guide portion (8) on the camshaft (5) and with a second guide portion (9) mounted on the adapter (4). The invention further relates to a method for producing such a camshaft adjuster.

Hydraulic camshaft adjuster

Die Erfindung betrifft einen hydraulischen Nockenwellenversteller (1) mit einem Stator (2) und einem beweglich zu dem Stator (2) angeordneten Rotor (3), sowie mit einem Zentralventil (4), über welches die Ölversorgung der Arbeitskammern (6, 7) des hydraulischen Nockenwellenverstellers (1) gesteuert wird, wobei zwischen dem Zentralventil (4) und dem Rotor (3) eine verformbare Dichthülse (5) angeordnet ist, wobei die Dichthülse (5) in axialer Richtung einen kraftfreien Ausgangszustand eine Ausgangslänge (L 0 ) hat und nach der Montage eine derartige Verformung aufweist, dass sich die Länge der Dichthülse (5) von der Ausgangslänge (L 0 ) auf eine Länge im montierten Zustand (L 1 )ändert, wobei die Dichthülse (5) in radialer Richtung zumindest abschnittsweise an dem Zentralventil (4) und an dem Rotor (3) anliegt. Die Erfindung betrifft ferner ein Verfahren zur Herstellung eines solchen hydraulischen Nockenwellenverstellers (1). The invention relates to a hydraulic camshaft adjuster (1) comprising a stator (2) and a rotor (3) arranged movably relative to the stator (2), and to a central valve (4) via which the oil supply to the working chambers (6, 7) of the hydraulic camshaft adjuster (1) is controlled, wherein between the central valve (4) and the rotor (3) a deformable sealing sleeve (5) is arranged, wherein the sealing sleeve (5) in the axial direction of a force-free output state has an initial length (L 0 ) and after assembly has such a deformation that the length of the sealing sleeve (5) from the initial length (L 0 ) to a length in the assembled state (L 1 ) changes, wherein the sealing sleeve (5) in the radial direction at least partially to the central valve (4) and against the rotor (3). The invention further relates to a method for producing such a hydraulic camshaft adjuster (1).

Phaser

Vorgeschlagen ist ein Nockenwellenversteller (1) mit zumindest einem Volumenspeicher (2), wobei der Nockenwellenversteller (1) zumindest eine Frühverstellkammer und zumindest eine Spätverstellkammer aufweist, denen über Druckmittelleitungen (5) Druckmittel zugeführt bzw. aus diesen abgeführt werden kann, wobei durch Druckmittelzufuhr zu der Frühverstellkammer bei gleichzeitigem Druckmittelabfluss von der Spätverstellkammer eine Phasenlage der Nocken-welle relativ zur Kurbelwelle in Richtung früher Steuerzeiten verstellt werden kann, wobei durch Druckmittelzufuhr zu der Spätverstellkammer bei gleichzeitigem Druckmittelabfluss von der Frühverstellkammer eine Phasenlage der Nockenwelle relativ zur Kurbelwelle in Richtung später Steuerzeiten verstellt werden kann, wobei dem oder den Volumenspeichern (2) während des Betriebs Druckmittel zugeführt werden kann, wobei zusätzlich zumindest zwei Druckmittelkanäle (7a, 7b) vorgesehen sind, wobei der erste Druckmittelkanal (7a) einerseits in einen der Volumenspeicher (2) mündet und andererseits mit der Frühverstellkammer kommuniziert, wobei der zweite Druckmittelkanal (7b) einerseits in einen der Volumenspeicher (2) mündet und andererseits mit der Spätverstellkammer kommuniziert und wobei jedem der Druckmittelkanäle (7a, 7b) ein Rückschlagventil zugeordnet ist, das einen Druckmittelfluss von der jeweiligen Verstellkammer zu dem Volumenspeicher (2) unterbindet und einen umgekehrten Druckmittelfluss zulassen kann, wobei der Volumenspeicher (2) eine Ölrückhaltevorrichtung (9) aufweist, um das im Betrieb gesammelte Öl nach dem Abstellen der Brennkraftmaschine derart zu halten, dass die Mündungen (10a, 10b) der Druckmittelkanäle (7a, 7b) zumindest teilweise mit Öl bedeckt sind. Proposed is a camshaft adjuster (1) with at least one volume accumulator (2), wherein the camshaft adjuster (1) has at least one advance chamber and at least one retardation chamber to which pressure medium can be supplied via pressure medium lines (5) or ...

Phaser

Vorgeschlagen ist ein hydraulischer Nockenwellenversteller (1) mit einem Abtriebselement (2) und einem Antriebselement (3), wobei das Antriebselement (3) und das Abtriebselement (2) jeweils mehrere Flügel (4) ausbilden, welche Druckkammern (5) definieren, die eine Winkelverstellung zwischen den beiden Elementen (2, 3) bewirken, wobei der Nockenwellenversteller (1) einen Verriegelungsmechanismus (6) aufweist, welcher das Abtriebselement (2) und das Antriebselement (3) in einer Winkellage verriegeln kann, die mittig vom maximal möglichen Verstellbereich ist, und wobei ein Steuerpin (7) im Abtriebselement (2) vorhanden ist, welcher zumindest einen im Flügel (4) des Abtriebselements (2) angeordneten Schiebekolben (8) mittels eines Hydraulikmittelflusses steuern kann, wobei der Schiebekolben (8) einen Hydraulikmittelfluss zwischen den benachbarten Druckkammern (5) durch den Flügel (4) hindurch steuert, dadurch gekennzeichnet, dass der Steuerpin (7) in einer Bohrung (9) des Abtriebselements (2) angeordnet ist und von einer ebenfalls in der Bohrung (9) fixierten Buchse (10) geführt ist, wobei der Steuerpin (7) durch eine Feder (11) beaufschlagt ist, derart, dass im drucklosen Zustand des Steuerpins (7) eine Hydraulikmittelpassage entlang des Steuerpins (7) und durch die Buchse (10) hindurch ermöglicht ist. Proposed is a hydraulic camshaft adjuster (1) having an output member (2) and a drive element (3), wherein the drive element (3) and the output member (2) each form a plurality of wings (4) which define pressure chambers (5), the one Angle adjustment between the two elements (2, 3) effect, wherein the camshaft adjuster (1) has a locking mechanism (6) which can lock the output member (2) and the drive element (3) in an angular position which is centered on the maximum possible adjustment , and wherein a control pin (7) is provided in the output element (2), which can control at least one in the wing (4) of the driven element (2) sliding piston (8) by means of a hydraulic ...

Camshaft adjuster

Nockenwellenversteller (1) mit- einem Stator (2),- einem Rotor (3),- einer Druckmittelversorgung (10), wobei- an dem Stator (2) zumindest eine Kammer (5) ausgebildet ist, welche durch mindestens einen am Rotor (3) ausgebildeten oder drehfest mit dem Rotor (3) verbundenen Flügel (4) in zwei Arbeitskammern (6, 7) unterteilt ist, wobei- die beiden Arbeitskammern (6, 7) jeweils über die Druckmittelversorgung (10) mit einem Druckmittel beaufschlagbar sind, derart, dass ein Druck des Druckmittels in der jeweiligen Arbeitskammer (6, 7) soweit erhöht werden kann, dass die Druckerhöhung zu einem Verdrehen des Rotors (3) führt,- in dem Rotor (3), vorzugsweise in dem Flügel (4) des Rotors (3), ein schaltbares Ventil (8) ausgebildet ist, welches in einer ersten Schaltstellung des Ventils (8) ein Durchströmen des Druckmittels von einer ersten Arbeitskammer (6) durch den Rotor (3), vorzugsweise durch den Flügel (4), in eine zweite Arbeitskammer (7) ermöglicht, und wobei- das Ventil (8) in einer zweiten Schaltstellung die Arbeitskammern (6, 7) hydraulisch voneinander trennt,- einem Verriegelungselement (9), welches den Flügel (4) in einer definierten Position zur Kammer (5) fixiert, wobei- das Verriegelungselement (9) zum Steuern eines Zuflusses oder Abflusses von Druckmittel in eine Arbeitskammer (6 ,7) ausgelegt ist, wobei- die Druckmittelversorgung (10) eine Ölpumpe (11), eine die Ölpumpe (11) mit mindestens einer der Arbeitskammer (6 ,7) verbindende Versorgungsleitung (12) und einen von der Ölpumpe (11) und der Versorgungsleitung (12) verschiedenen Hydraulikspeicher (13) umfasst, wobei- der Hydraulikspeicher (13) das Druckmittel bei einer durch Wechselmomente induzierten Verdrehung des Rotors (3) in die sich vergrößernde Arbeitskammer (6, 7) nachströmen lässt, wobei- das Druckmittel im Hydraulikspeicher (13) unter Umgebungsdruck steht. Camshaft adjuster (1) with - a stator (2), - a rotor (3), - a pressure medium supply (10), wherein - at least one chamber (5) is formed on the ...

Hydraulic camshaft adjuster

Die Erfindung betrifft einen hydraulischer Nockenwellenversteller (1) zur variablen Verstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, mit einem Stator (2) und einem relativ zum Stator (2) verdrehbaren Rotor (3), wobei an dem Stator (2) radial nach innen ragende Stege (4) ausgebildet sind, wobei an dem Rotor (3) radial nach außen ragende Flügel (5) ausgebildet sind, wobei zwischen dem Stator (2) und dem Rotor (3) mindestens ein Hydraulikraum (6) ausgebildet ist, welcher durch einen Flügel (5) des Rotors (3) in eine erste Arbeitskammer (7) und eine zweite Arbeitskammer (8) unterteilt wird, sowie mit mindestens einem, in dem Stator (2) ausgebildeten Druckmittelspeicher (9), wobei in einer fluidischen Verbindung (10) zwischen dem Druckmittelspeicher (9) und einer der Arbeitskammern (7, 8) ein Rückschlagventil (11) angeordnet ist, wobei in einem Steg (4) des Stators (2) eine erste axiale Bohrung (12) ausgebildet ist, welche den Druckmittelspeicher (9) ausbildet, und wobei in dem Steg (4) des Stators (2) eine zu der ersten axialen Bohrung (12) im Wesentlichen parallele zweite axiale Bohrung (13) ausgebildet ist, welche einen Abschnitt (14) der fluidischen Verbindung (10) ausbildet, in dem das Rückschlagventil (11) aufgenommen ist.

Camshaft adjuster having a hydraulic chamber sealing element that can be switched to and fro to achieve hydraulic freewheeling

The invention relates to a camshaft adjuster (1) for an internal combustion engine of a motor vehicle, having a stator (2) and a rotor (3), which is accommodated inside the stator (2) such that the rotor can rotate relative to said stator, wherein the rotor (3) has at least one rotor vane (6), which extends in the radial direction towards an inner wall (5) of the stator (2) and forms a first hydraulic chamber (8) and a second hydraulic chamber (9) between the stator (2) and the rotor (3), wherein a connection gap (11) remains between a rotor vane end face (10) and the inner wall (5) of the stator (2), said gap fluid-connecting the first hydraulic chamber (8) and the second hydraulic chamber (9) to each other, wherein a sealing element (13), which is guided in a radially movable manner in the rotor vane end face (10) can be switched to and fro between a sealing position, in which the sealing element (13) bears against the inner wall (5) of the stator (2) to seal off the connection gap (11), and a connecting position, in which the first and second hydraulic chambers (8, 9) are connected to each other through the connection gap (11).

Hydraulic camshaft adjuster

Die Erfindung betrifft einen hydraulischen Nockenwellenversteller (1) zur Verstellung der Steuerzeiten von Gaswechselventilen eines Verbrennungsmotors, mit einem Stator (2), welcher synchron mit einer Kurbelwelle des Verbrennungsmotors drehbar ist, und einem verdrehbar zum Stator (2) angeordneten Rotor (3), welcher synchron mit einer Nockenwelle drehbar ist, mit zwei Gruppen von jeweils mit einem in einem Druckmittelkreislauf zu- oder abströmenden Druckmittel (21) beaufschlagbaren Arbeitskammern (9, 10) mit einer unterschiedlichen Wirkrichtung, mit einer Mittenverriegelungseinrichtung (10) zur temporären Verriegelung des Rotors (3) in einer definierten Position zum Stator (2), sowie mit einem Reservoir (32) zur Bevorratung eines Druckmittels (21), aus welchem die Arbeitskammern (8, 9) bei einer Unterversorgung durch eine Druckmittelpumpe mit Druckmittel (21) versorgt werden können. Dabei sind an dem Rotor (3) axiale Bohrungen (24, 25) zur Führung von Verriegelungsstiften für die Mittenverriegelungseinrichtung (10) ausgebildet, wobei die Verriegelungsstifte jeweils einen Druckmittelzufuhrkanal (16, 17) zur Druckmittelversorgung der Arbeitskammern (8, 9) freigeben oder verschließen können, wobei die Schnittpunkte der Druckmittelzufuhrkanäle (16, 17) und der axialen Bohrungen (24, 25) zur Führung der Verriegelungsstifte in einer gemeinsamen Ebene senkrecht zu einer Mittelachse des Rotors (3) liegen.Die Erfindung betrifft ferner ein Verfahren zur Herstellung eines solchen hydraulischen Nockenwellenverstellers (1). The invention relates to a hydraulic camshaft adjuster (1) for adjusting the timing of gas exchange valves of an internal combustion engine, with a stator (2) which is rotatable synchronously with a crankshaft of the internal combustion engine, and a rotor (3) arranged rotatably relative to the stator (2) can be rotated synchronously with a camshaft, with two groups of working chambers (9, 10) which can each be acted upon by a pressure medium circuit (21) and ...

Camshaft adjuster with a hydraulic chamber sealing element that can be switched back and forth to achieve a hydraulic freewheel

Nockenwellenversteller (1) für eine Verbrennungskraftmaschine eines Kraftfahrzeugs, mit einem Stator (2) und mit einem Rotor (3), der innerhalb des Stators (2) relativ zu diesem verdrehbar gelagert aufgenommen ist, wobei der Rotor (3) wenigstens einen Rotorflügel (6) aufweist, der sich in radialer Richtung zu einer Innenwand (5) des Stators (2) erstreckt und zwischen dem Stator (2) und dem Rotor (3) eine erste Hydraulikkammer (8) und eine zweite Hydraulikkammer (9) ausbildet, wobei zwischen einer Rotorflügelstirnseite (10) und der Innenwand (5) des Stators (2) ein Verbindungsspalt (11) verbleibt, der die erste Hydraulikkammer (8) und die zweite Hydraulikkammer (9) fluidisch miteinander verbindet, dadurch gekennzeichnet, dass ein radialbeweglich in der Rotorflügelstirnseite (10) geführtes Dichtelement (13) wahlweise zwischen einer Abdichtposition, in der das Dichtelement (13) den Verbindungsspalt (11) abdichtend an der Innenwand (5) des Stators (2) anliegt, und einer Verbindungsposition, in der die erste und die zweite Hydraulikkammer (8, 9) durch den Verbindungsspalt (11) miteinander verbunden sind, hin und her schaltbar ist, wobei das Dichtelement (13) für das Schalten in die Verbindungsposition in Nachbarschaft zu der Innenwand (5) des Stators (2) wenigstens eine Wirkfläche (16, 17) aufweist, auf die eine Gegendruckkraft (FpG) einer druckbeaufschlagten Hydraulikflüssigkeit aus der ersten und/oder der zweiten Hydraulikkammer (8, 9) wirkt, wobei die wenigstens eine Wirkfläche (8, 9) so dimensioniert und/oder geometrisch ausgeformt ist, dass das Dichtelement (13) beim Schalten in die Verbindungsposition bei rotierendem Rotor (3) durch die auf die Wirkfläche (8, 9) wirkende Gegendruckraft (FpG) in die Verbindungsposition verschiebbar ist. Camshaft adjuster (1) for an internal combustion engine of a motor vehicle, with a stator (2) and with a rotor (3), which is mounted within the stator (2) so as to be rotatable relative to it, the rotor (3) having at least one rotor ...

Centering connection of a trigger wheel with a rotor in a phaser

Die Erfindung betrifft einen Nockenwellenversteller für Ketten- und Riementriebe eines Kraftfahrzeugs, mit einer einen Rotor (2) aufweisenden Verstelleinheit (1) des Flügelzellentyps, wobei an dem Rotor (2) ein Triggerrad (3) festgelegt ist, wobei am Trigerrad (3) ein zum Rotor (2) weisender Vorsprung (6) so in den Rotor (2) eingesetzt ist, dass das Triggerrad (3) zentriert zum Rotor (2) an diesem befestigt ist. The invention relates to a camshaft adjuster for chain and belt drives of a motor vehicle, having a rotor (2) adjusting unit (1) of the vane type, wherein on the rotor (2) a trigger wheel (3) is fixed, wherein the Trigerrad (3) a to the rotor (2) pointing projection (6) is inserted into the rotor (2), that the trigger wheel (3) centered to the rotor (2) is fixed thereto.

Camshaft adjuster with drain valve

Die Erfindung betrifft einen hydraulischen Nockenwellenversteller (1), insbesondere hydraulischer Nockenwellenversteller des Flügelzellentyps, mit einem Rotor (2) und einem Stator (3), die gegeneinander verdrehbar gelagert sind, einem am Stator (3) festgelegten Deckel (10) mit einer Verriegelungsaufnahme sowie zumindest einem im Rotor (2) in axialer Richtung verschieblich aufgenommenen, in Richtung der Verriegelungsaufnahme vorgespannten Verriegelungspin (11, 12), und einen Hydraulikkanal (27, 28, 29) zum Druckbeaufschlagen des Verriegelungspins (11, 12) gegen dessen Vorspannung, der über eine Zentralschraube mit Hydraulikmedium befüllbar und entleerbar ist, wobei in dem Rotor (2) zumindest ein mit dem Hydraulikkanal (27, 28, 29) strömungstechnisch verbundener zusätzlicher Abflusskanal (37, 38, 39, 40) mit einem Abflussventil (33, 34, 35, 36) ausgebildet ist, wobei vorzugsweise das Abflussventil (33, 34, 35, 36) den Abflusskanal (37, 38, 39, 40) bei druckbeaufschlagtem Verriegelungspin (11, 12) verschließt und bei Abfall des auf den Verriegelungspin (11, 12) wirkenden hydraulischen Drucks öffnet. The invention relates to a hydraulic camshaft adjuster (1), in particular a hydraulic camshaft adjuster of the vane type, having a rotor (2) and a stator (3) mounted rotatably relative to each other, a cover (10) fixed to the stator (3) with a locking receptacle and at least one in the rotor (2) slidably received in the axial direction, biased in the direction of the locking receptacle locking pin (11, 12), and a hydraulic channel (27, 28, 29) for pressurizing the locking pin (11, 12) against its bias, the over a central screw with hydraulic medium can be filled and emptied, wherein in the rotor (2) at least one with the hydraulic channel (27, 28, 29) fluidly connected additional outflow channel (37, 38, 39, 40) with a drain valve (33, 34, 35 , 36), wherein preferably the drain valve (33, 34, 35, 36) the outflow channel (37, 38, 39, 40) in pressurized Verriegelun gspin (11, ...

Camshaft adjustment device for an internal combustion engine

The invention relates to a camshaft adjustment device for an internal combustion engine, having a chamber housing, an actuating rotor which is received in the chamber housing and which can be pivoted about an axis which is concentric with respect to the circumferential axis of the chamber housing, wherein the actuating rotor has a plurality of dividing flanks which rise up radially over a cylindrical base surface of the actuating rotor, and in each case divide pressure chambers which are formed in the chamber housing into a first chamber section and a second chamber section. Sealing strips are inserted into the actuating rotor. The sealing strips form a fluid passage path. The latter can be blocked via a check valve device in such a way that the fluid passage is possible only in one direction.

Torque limiting coupling

Torque limiting coupling (20,20a) comprising a first shaft (1), a shear plate (9) fixedly connected with the first shaft (1) and a coupling ring (3,3a) arranged coaxially to the first shaft (1), where the coupling ring (3,3a) comprises a lateral surface which is in contact with a lateral surface of the first shaft (1), where the coupling ring (3,3a) has a double-walled section (3a, 4) with an internal annular pressure fluid chamber (6), designed in such a way, that this section increases its radial thickness when the fluid chamber (6) is filled with pressurized fluid and thereby increases the pressure forces and the friction forces between the lateral surfaces of the coupling ring (3,3a) and the first shaft (1) in order to allow torque transfer, and that the coupling ring (3,3a) transfers no torque, when the fluid chamber (6) is not filled with pressurized fluid, and where the coupling ring (3,3a) comprises a shear tube (8) closing the pressurized fluid chamber (6) to hold the pressure, whereby the shear plate (9) is designed to cut off a tip of the shear tube (8) in order to open the pressure fluid chamber if the first shaft (1) is slipping relatively to the coupling ring (3,3a) which is the case, when the torque is higher than a predefined maximum transferable torque given by the fluid pressure and the design of the coupling, and whereby the first shaft (1) comprises a conical connector (1.1) and that the shear plate (9) is fixed by one central bolt (11) to the first shaft (1), by pressing a conical bushing (10), which is connected to or part of the shear plate (9), against the conical connector (1.1).

Cartridge for a hydraulic camshaft adjuster

Patrone für einen hydraulischen Nockenwellenversteller zur Halterung einer einen Arretierstift (10) verspannenden Schraubenfeder (9), mit einem hohlzylindrischen Halteabschnitt (12) zur kraft- oder formschlüssigen Fixierung in einer Aufnahmebohrung (6), an den sich ein nach innen verlaufender Auflagerabschnitt (13), auf dem die Schraubenfeder (9) aufsitzt, anschließt, der wiederum in einen sich axial erstreckenden, in die Schraubenfeder (9) eingreifenden Führungsabschnitt (14) übergeht, wobei zumindest der Halteabschnitt (12) radial federnd ausgebildet ist. Cartridge for a hydraulic camshaft adjuster for holding a locking pin (10) bracing coil spring (9), with a hollow cylindrical holding portion (12) for non-positive or positive fixing in a receiving bore (6) to which an inwardly extending support portion (13) , on which the coil spring (9) is seated, adjoins, which in turn merges into an axially extending, in the coil spring (9) engaging guide portion (14), wherein at least the holding portion (12) is formed radially resiliently.

Tilting-pad radial bearing and shaft assembly

The invention relates to a tilting-pad radial bearing comprising a support ring which surrounds a rotational axis; a plurality of tilting pads which are arranged one behind the other in the circumferential direction of the support ring, each of which extends over a pad surrounding angle, and each of which is mounted on the radial interior of the support ring and has a shaft sliding surface on the radial inner surface facing away from the support ring, wherein the tilting pads can be pivoted about a respective pivot axis, which runs at least substantially parallel to the rotational axis, with respect to the support ring, and the pivot axis divides the respective pad surrounding angle of the tilting pad into two angle ranges in each case, each angle range comprising a first angle range and a second angle range. The size of the first angle range is defined by a support ratio which results from the quotient of the first angle range and the pad surrounding angle. The tilting pad radial bearing according to the invention is characterized in that the support ratios of different tilting pads differ.

Camshaft adjusting system with hydraulic camshaft adjuster and electric camshaft adjuster

Die Erfindung betrifft ein Nockenwellenverstellsystem (1) für ein Kraftfahrzeug, mit einer inneren Nockenwelle (2), einer koaxial zu und radial außerhalb der inneren Nockenwelle (2) angeordneten äußeren Nockenwelle (3), einem Antriebsrad (4), das zum Einleiten von Drehmoment an die Nockenwellen (2, 3) ausgelegt ist, einem hydraulischen Nockenwellenversteller (5), der zur Verstellung der Phasenlage der äußeren Nockenwelle (3) relativ zu dem Antriebsrad (4) auf die äußere Nockenwelle (3) einwirkt, und mit einem elektrischen Nockenwellenversteller (6), der zur Verstellung der Phasenlage der inneren Nockenwelle (2) relativ zu dem Antriebsrad (4) auf die innere Nockenwelle (2) einwirkt, wobei der elektrische Nockenwellenversteller (6) zumindest teilweise in Axialrichtung in den hydraulischen Nockenwellenversteller (5) eingreift. The invention relates to a camshaft adjusting system (1) for a motor vehicle, comprising an inner camshaft (2), an outer camshaft (3) arranged coaxially with and radially outside the inner camshaft (2), a drive wheel (4) for introducing torque to the camshafts (2, 3) is designed, a hydraulic camshaft adjuster (5), which acts on the outer camshaft (3) for adjusting the phase angle of the outer camshaft (3) relative to the drive wheel (4), and with an electric camshaft adjuster (6) acting on the inner camshaft (2) for adjusting the phase angle of the inner camshaft (2) relative to the drive wheel (4), wherein the electric camshaft adjuster (6) engages at least partially in the axial direction in the hydraulic camshaft adjuster (5) ,

Torque limiting coupling

Wellgetriebe

Ein Wellgetriebe (1) umfasst einen Wellgenerator (8), ein durch diesen verformbares flexibles, außenverzahntes Getriebebauteil (14), insbesondere in Form eines Flexrings, sowie mindestens ein mit dem flexiblen, außenverzahnten Getriebebauteil (14) kämmendes innenverzahntes Getriebebauteil (4,5). Das flexible, außenverzahnte Getriebebauteil (14) weist eine, bezogen auf dessen mechanisch nicht belasteten Zustand, unrunde Grundform auf.

Nockenwellenverstellsystem mit hydraulischem Nockenwellversteller und elektrischem Nockenwellenversteller

Nockenwellenverstellsystem (1) für ein Kraftfahrzeug, mit einer inneren Nockenwelle (2), einer koaxial zu und radial außerhalb der inneren Nockenwelle (2) angeordneten äußeren Nockenwelle (3), einem Antriebsrad (4), das zum Einleiten von Drehmoment an die Nockenwellen (2, 3) ausgelegt ist, einem hydraulischen Nockenwellenversteller (5), der zur Verstellung der Phasenlage der äußeren Nockenwelle (3) relativ zu dem Antriebsrad (4) auf die äußere Nockenwelle (3) einwirkt, und mit einem elektrischen Nockenwellenversteller (6), der zur Verstellung der Phasenlage der inneren Nockenwelle (2) relativ zu dem Antriebsrad (4) auf die innere Nockenwelle (2) einwirkt, wobei der elektrische Nockenwellenversteller (6) zumindest teilweise in Axialrichtung in den hydraulischen Nockenwellenversteller (5) eingreift, dadurch gekennzeichnet, dass eine mit einem Rotor eines Elektromotors (9) des elektrischen Nockenwellenverstellers (6) drehfest verbundene Abtriebswelle (10) über eine Kupplung (25) mit einem drehfest mit der inneren Nockenwelle (2) verbundenen Abtriebshohlrad (11) gekoppelt ist und das Abtriebshohlrad (11) an einer radialen Innenseite eines relativ zu einem Stator (7) verdrehbaren Rotors (8) des hydraulischen Nockenwellenverstellers (5) gelagert ist und das Antriebsrad (4) über ein Radialgleitlager auf der äußeren Nockenwelle (3) abgestützt ist..

Torque limiting coupling

Nockenwellenversteller

Die Erfindung betrifft einen Nockenwellenversteller (1) mit einem Rotor (2) und einem Stator (3), wobei der Rotor (2) mindestens eine Rotorbohrung (4) zur Aufnahme eines Steuer- oder Verriegelungskolbens (5) aufweist. In der Rotorbohrung (4) ist ein Steuer- oder Verriegelungskolben (5) geführt. Der Nockenwellenversteller weist ferner einen Ölführungskanal (6) auf, über welchen eine Stirnseite (7) des Steuer- oder Verriegelungskolbens (5) mit Druckmittel beaufschlagbar ist, wobei eine Querschnittsfläche (8) des Steuer- oder Verriegelungskolbens (5) im Bereich der Stirnseite (7) einen gegenüber einer Querschnittsfläche (9) der Rotorbohrung (4) reduzierten Querschnitt aufweist.

Torque-limiting coupling

A torque limiting coupling has a shaft, a shear plate fixedly connected to the shaft, and a coaxially disposed coupling ring. The coupling ring has a lateral surface in contact with the shaft and a double-walled section with an internal annular pressure fluid chamber. When the fluid chamber is filled with pressurized fluid, the radial thickness increases and increases the pressure and friction forces for a torque transfer between the coupling ring and the shaft. A shear tube closes the pressurized fluid chamber. A shear plate is configured to cut off a tip of the shear tube in order to open the pressure fluid chamber when the first shaft slips relative to the coupling ring. A central bolt affixes the shear plate to the shaft by pressing a conical bushing of the shear plate onto a conical connector of the shaft.

Safety coupling with pressure regulation

The invention relates to a safety coupling having an input shaft (2) and an output shaft (3), wherein the input shaft (2) and the output shaft (3) are arranged coaxially to one another, and the input shaft (2) and the output shaft (3) can be connected in a force-fitting manner by means of pressurization of a pressure chamber (4) formed in the safety coupling. The pressure chamber (4) has a volume Vo. To change the volume of the pressure chamber, there is provided a variable element (10) by means of which the resulting volume of the pressure chamber can be varied. The hydraulic medium situated in the pressure chamber is constant. Influences, such as for example temperature fluctuations, can be compensated for by varying the volume of the pressure chamber.

Camshaft adjuster having a hydraulic chamber sealing element that can be switched to and fro to achieve hydraulic freewheelingt part

A camshaft adjuster for an internal combustion engine of a motor vehicle, having a stator and a rotor accommodated inside the stator such that the rotor can rotate relative to said stator, wherein the rotor has at least one rotor vane, which extends in the radial direction towards an inner wall of the stator and forms a first hydraulic chamber and a second hydraulic chamber between the stator and the rotor, wherein a connection gap remains between a rotor vane end face and the inner wall of the stator and fluid-connecting the first hydraulic chamber and the second hydraulic chamber. A sealing element is guided in a radially movable manner in the rotor vane end face to and fro between a sealing position, in which the sealing element bears against the inner wall of the stator to seal off the connection gap, and a connecting position, in which the first and second hydraulic chambers are connected to each other through the connecting gap.