Abstract: A camshaft adjusting device for an internal combustion engine including: a rotor that can be rotationally fixed to a camshaft of the internal combustion engine; a pot-shaped stator that encompasses the rotor and can be driven by a crankshaft; and an annular chamber situated between the stator and the rotor and subdivided into multiple pressure chambers by stator ribs that are located on the stator and that extend up to the rotor. Each pressure chamber is subdivided into two working chambers (A,B) by vanes provided on the rotor. The device also includes a central valve (1) which has a displaceable valve body (2), by which a pressure medium that is fed via a pressure medium pump (P) from a pressure medium reservoir (T) can be selectively introduced into the working chambers (A,B) on one side of the vanes and can be fed back from the working chambers (A,B) on the other side of the vanes to the pressure medium reservoir (T), depending on a position of the valve body (2).

Abstract: A camshaft adjusting device for an internal combustion engine including: a vane-type adjuster actuable by a pressure medium and which is rotationally fixed to a camshaft by a rotor and rotationally fixed to a crankshaft by a stator; a central valve has a displaceable valve body, by which a pressure medium is fed to the vane-type adjuster via a pump from a reservoir, the medium being selectively introduced into different working chambers and fed back from other working chambers to the reservoir, depending on the position of the valve body. The device includes a rolling bearing , by which the end section of the camshaft facing the vane-type adjuster is mounted in relation to a fixed housing wall. An axially oriented through-flow opening extends through the rolling bearing through which the pressure medium delivered by the pressure flows in an axial direction to the central valve.

Abstract: A control valve (1) for a hydraulic device, particularly a central valve of a camshaft adjuster for reciprocating internal combustion engines, with a receiving part (8) in which a hydraulic unit (2) with a control piston (5) is arranged, wherein the control piston (5) is moveably housed in the hydraulic unit (2), is loaded by a spring (6) and can be limited in its displacement movement by a stop element (7), and with a retaining ring (9) that can be fixed in an inner housing (12) to the receiving part (8) and wherein the stop element (7) is designed as a separate component and can be connected to the hydraulic unit (2) by a material-fit or positive-fit connection.

Abstract: A control valve for a hydraulic device, in particular central valve of a camshaft adjuster system for reciprocating-piston internal combustion engines, having a valve sleeve (1) which projects into a cavity of a camshaft (8), wherein a displaceable control piston (3) is arranged in the valve sleeve (1), which control piston is subjected to load on one side by a spring (4) which is adjoined by a pressure medium line. The cavity of the camshaft (8) is connected to a pressure medium supply channel of the reciprocating-piston internal combustion engine via at least one supply line (16) in the camshaft (8) and via a bearing, and the pressure medium line is in the form of a pressure medium feed line and the pressure medium feed line is connected to the pressure medium supply channel of the reciprocating-piston internal combustion engine via a pressure line (12) in the camshaft (8) and via the bearing.

Abstract: A camshaft adjusting system (1) having a camshaft adjuster (2) and a camshaft (3), wherein the camshaft adjuster (2) has a drive element (4) and an output element (5) which is disposed so as to be pivotably movable with respect to the drive element (4), wherein the output element (5) is non-rotatably connected to the camshaft (3), wherein a cover element (6) is fastened non-rotatably to the output element (5) and the hub (9) of the cover element (6) is disposed between the output element (5) and the camshaft (3), wherein the radial direction of extension of the cover element (6) is greater than the diameter of the contact surface (10) of the hub (9) of the cover element (6) to the camshaft (3).

Abstract: A hydraulic camshaft adjuster (1) including a stator (2) and a rotor (3) arranged such that it can rotate relative thereto, the stator (2) being connected to at least one separate cover (7) that seals a cavity (11) located between the rotor (3) and the stator (2). In the region of the cover (7), the material of the stator (2) at least partially encompassing said cover (7) is formed without machining.

Abstract: A camshaft adjuster (1) including a hub (2) for securing the camshaft adjuster (1) to one end (3) of a camshaft (4) is provided. The camshaft adjuster (1) includes a drive element (8) and an output element (9). An outer cover surface (5) of one section (6) of the hub (2), which faces the camshaft, is designed as a bevel surface (7) which protrudes from the camshaft adjuster (1) and can be brought into contact with a complementary bevel surface (24) of the end of the camshaft (3).

Abstract: A camshaft phaser, including a stator (1) that can be driven via a crankshaft of an internal combustion engine, and a rotor (2) that can be non-rotatably joined to a camshaft of the internal combustion engine, and a torsion spring (5) that has helical windings and that acts between the rotor (2) and the stator (1) and whose first radially inner end (7) is directly or indirectly joined to the rotor (2), and whose second radially outer end (8) is directly or indirectly joined to the stator (1), whereby a central, axially protruding pipe section (19) associated with the rotor (2) is provided, and the first end (7) of the torsion spring (5) is non-rotatably affixed with a positive fit to the pipe section (19).

Abstract: A control valve (1) of a camshaft adjuster, which has a housing (2) having three pin openings (5a, 5b, 5c), spaced apart axially from each other, wherein two pin openings (5a, 5b) are each connected to the tank connection (T) in two axial positions of the control piston (4) and the third pin opening (5c) is not connected to the tank connection (T) in a third axial position of the control piston (4) in a fluid-conducting manner.

Abstract: A rolling bearing (50) which includes a rolling bearing inner ring (51), a rolling bearing outer ring (52) and a rolling bearing ball cage ring (53). The aim of the invention is to enable a hydraulic pressure medium (P) to be transferred, economizing as much mounting space as possible, for example for a camshaft (10), the phase position thereof being adjustable in relation to a crankshaft via a hydraulic pressure medium (P) through a hydraulic phase adjusting device (20). The rolling bearing (50) includes at least one channel (51a, 51a?, 52a?, 41, 42) for guiding hydraulic pressure medium (P). A camshaft assembly equipped with such a rolling bearing (50).

Abstract: A camshaft unit includes a camshaft having a radial channel, a hydraulic phase setting device communicating with the radial channel for adjusting the phase length of the camshaft with respect to a crankshaft via hydraulic pressure medium and a pressure medium channel embodied as a solid cylinder head component. To transfer a pressure medium, at least one pressure medium transfer element is formed between the pressure medium channel and the radial channel. The pressure medium transfer element includes a ring channel including a ring channel opening extending in the peripheral direction of the ring channel and including a radial channel opening leading into a radial channel and opposite the ring channel opening. The pressure medium channel communicates with the radial channel via the ring channel opening and the radial channel opening.

Abstract: A control valve (4) for controlling pressure medium flows of a camshaft adjuster which includes a substantially hollow cylindrical valve housing (6), a control piston (12), which is guided axially displaceably inside the valve housing (6), and a non-return valve (22) which can be hydraulically released. In a region of a pressure medium inlet, the valve housing (6) includes a housing shaft (28) with an axial inflow bore (30) which widens in funnel-like manner towards the inlet side.

Abstract: A control valve (4) for controlling pressure medium flows of a camshaft adjuster, which control valve includes a substantially hollow cylindrical control sleeve (6), which is disposed inside a casing (8), and a control piston (12) which is guided axially displaceably inside the control sleeve (6) against the spring force of a spring element (14), the control sleeve (6) having at one axial end a base (22) which serves as an axial contact surface for the spring element (14).

Abstract: A camshaft phaser system including an output drive element non-rotatably connected to a camshaft, and a control valve disposed in a central receptacle of the output drive element, the control valve extending axially into a central bore of the camshaft and being formed with at least a first operating port and a second operating port axially spaced apart therefrom. The control valve is axially disposed such that the first operating port is axially positioned in the camshaft.

Abstract: A valve insert (8a, 8b) for a valve, in particular for a control valve (2) for controlling pressure-medium streams of a camshaft adjuster, includes an insert housing (10), in which a filter (12) and a non-return valve (14) with a closing element (24) and a seat element (20) are integrated. A configuration of the valve insert which is easy to install is ensured by at least the insert housing (10), the filter (12) and the seat element (20) being connected non-detachably to one another and forming one preassembled structural unit (40).

Abstract: A device for varying the relative angle position of a camshaft with respect to a crankshaft of an internal combustion engine. A circlip fixes the valve housing in a positively locking manner. The circlip has at least one radially extending circumferential portion which is designed to engage into an annular groove arranged in the camshaft or in the rotor in the axial end region of said camshaft or rotor, wherein the circlip has at least one axially extending retaining portion, wherein the control piston has, in one of the face regions thereof, an annular groove which is designed for the engagement of the at least one axially extending retaining portion, and wherein the valve housing has, in one of its face regions, at least one hook-shaped portion for engaging behind at least one radially extending circumferential portion of the circlip.

Abstract: A camshaft adjusting device having a vane-type adjuster which includes a rotatably drivable stator which is connectable to a first camshaft; and a rotor which is rotatably supported in the stator and is connectable to a second camshaft, a plurality of radially inwardly projecting projections, which divide an annular space between the stator and the rotor into multiple pressure chambers, being provided on the stator; and a plurality of outwardly projecting vanes, which divide the pressure chambers into oppositely acting working chambers, being provided on the rotor, a pressure medium being applicable to the working chambers to optionally adjust the rotor with respect to the stator via a central valve, the stator being rotatably fixedly connected or connectable to the first camshaft via the central valve.

Abstract: A camshaft adjusting device having a vane-type adjuster, which includes a stator which is rotatably drivable by a crankshaft; and a rotor which is rotatably supported in the stator and is connectable to a camshaft, a plurality of radially inwardly projecting projections, which divide an annular space between the stator and the rotor into multiple pressure chambers, being provided on the stator; and a plurality of radially outwardly projecting vanes, which divide the pressure chambers into oppositely acting working chambers, being provided on the rotor; a pressure medium being applicable to the working chambers to optionally adjust the rotor with respect to the stator via a central valve, the central valve being integrally connected to the rotor or to the stator or to a component which is rotatably fixedly connected to one of the two parts.

Abstract: A pressure accumulator includes a housing having a housing cavity, a piston axially displaceable in the housing cavity between a first final position and a second final position and having a pressure surface which together with a wall of the housing cavity delimits at least partially a reservoir connectable to an ICE consumer in a fluid-conveying manner, an energy store cooperating with the piston, the piston being displaceable against the force of the energy store from the first final position into the second final position in that the reservoir is acted on by pressure using a pressure medium, and a locking device for locking the piston in the second final position. A locking tube is connected to the piston and supported within the housing in an axially shiftable manner, and lockable at an end of the housing facing away from the reservoir with the aid of a locking pin.

Abstract: A fastening assembly for fastening a camshaft adjuster to a camshaft, having an input part that can be brought into driving engagement with a crankshaft, an output part that is non-rotationally connected to the camshaft, the output part being mounted rotationally adjustably with respect to the input part, and a control mechanism, by which a rotational angle position between the input and output parts can be adjusted. The output part is provided with a central axial opening penetrated by an end section of the camshaft. The end section has a thread-bearing thread section, which is screwed together with a tension nut acting on the output part such that the output part and the camshaft are axially loaded for the non-rotational connection thereof. To this end, the tension nut is elastically loaded in the axial direction or relieved in the axial direction.