Abstract: A central valve of a camshaft adjuster of an internal combustion engine, which has a valve housing, a control piston, and a mounting flange. The valve housing is arranged, at least in part, inside a receptacle inside the camshaft adjuster. The valve housing has at least one inflow connection, one outflow connection, and one working connection. The control piston is arranged axially slidable inside the valve housing. The pressure fluid, which flows to and from the camshaft adjuster, can be controlled by the suitable positioning of the control piston inside the valve housing. Also, the mounting flange is fixedly connected to a wall section of the receptacle, thus determining the axial position of the valve housing relative to the camshaft adjuster.

Abstract: A control valve which has a substantially cylindrical valve box and a substantially cylindrical control piston. The control valve can be arranged in a cylindrical receptacle and the control piston is arranged so as to be axially displaceable inside the valve box.

Abstract: A rotor (4) for a camshaft adjuster (14) is provided. The rotor (4) has a rotor core (6) that can be pushed onto a camshaft (2) and rotationally symmetric vanes (8) that extend radially away from the rotor core (6). Here, the rotor core (6) has an axial projection (10) projecting over the vanes (8). A profile (12) extends radially away from the axial projection (10).

Abstract: A camshaft adjustment assembly (1), wherein a control valve (4) is provided for controlling the flow of the pressure fluid in the hydraulic chamber, wherein the control valve (4) is supplied with pressure fluid from the region of a camshaft bearing (5) by a fluid channel (6, 7, 8, 9). In order to enable an improved fluid line with little component weakening, the fluid channel (6, 7, 8, 9) is formed as an annular chamber (6), which is formed between the axial end (10) of the camshaft (2) at least sections of which have a tubular design, a flange-like section (11) of a housing element (12) that is connected rotationally fixed to the camshaft (2) and in which the control valve (4) is mounted, a radially inner delimiting surface (13) of the housing element (12), and a section (14) of the wall of the camshaft bearing (5).

Abstract: A camshaft phasing system (10) for an internal combustion engine (6) includes a camshaft (16) and a camshaft phaser (15) that is axially slid onto the camshaft (16) and that has stator (34) and a rotor (36) driven by the stator (34), whereby the rotor (36) is mounted rotatably relative to the stator (34). A bushing (26) that is secured on the camshaft (16) is provided, whereby the camshaft phaser (15) is tightened on the camshaft (16) against the bushing (26). Moreover, a drive has an internal combustion engine and such a camshaft phasing system.

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 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 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 control valve for a device for the variable adjustment of the valve timing of gas exchange valves of an internal combustion engine. The control valve has a substantially hollow-cylindrical valve box, a control piston and a securing ring. The valve box is arranged in a receptacle inside the device, the securing ring projects over the valve box in the radial direction and the control piston is arranged so as to be axially displaceable inside the valve box.

Abstract: A control valve for a device for variably setting control times of gas exchange valves of an internal combustion engine. The control valve has a valve housing, which is hollow, and at least one inflow connection, at least one exhaust connection, and at least two working connections; a hydraulic medium conduction insert disposed in the valve housing and implemented as hollow, having hydraulic medium conduction channels, which are disposed in the wall of the hydraulic medium conduction insert and communicate with the working connections; and a control piston, which is disposed in the hydraulic medium conduction insert. The hydraulic medium conduction insert has a guide sleeve, in which the control piston is guided. The guide sleeve has a plastic encapsulation, in which at least two of the hydraulic medium conduction channels are disposed, and a filter fabric is provided between the plastic encapsulation and the guide sleeve.

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 pre-assembled structural unit (40).

Abstract: A rotor (4) for a camshaft adjuster (14) is provided. The rotor (4) has a rotor core (6) that can be pushed onto a camshaft (2) and rotationally symmetric vanes (8) that extend radially away from the rotor core (6). Here, the rotor core (6) has an axial projection (10) projecting over the vanes (8). A profile (12) extends radially away from the axial projection (10).

Abstract: A device for changing the relative angular position of a camshaft with respect to a crankshaft of an internal combustion engine, wherein the drive element is rotatably mounted with respect to the crankshaft and is driven by the camshaft. Between the drive element and the camshaft at least two hydraulic chambers are formed, wherein the hydraulic chambers can be pressurized with a pressurized fluid in order to set a defined relative rotational position between the drive element and the camshaft. The device includes a housing element, wherein a pressure reservoir having a pressure chamber for pressurized fluid is arranged on the housing element and wherein the basic form of the pressure reservoir is substantially cylindrical.

Abstract: A camshaft adjuster which has an improved configuration of the pressure chambers and of the adjoining pressure chamber surfaces is provided, that is attached at the end side to a camshaft (2), coaxially about a camshaft axis (3), and which acts as a transmission element to a drive wheel (4) for rotationally driving the camshaft (2), having an inner wheel (5) which is arranged so as to be rotationally fixed with respect to the camshaft (2) and having an outer wheel (6) which is arranged so as to be rotatable, and coaxial, with respect to the inner wheel (5). At least one inner wheel vane (7) is arranged on the inner wheel (5) and at least one outer wheel vane (8) is arranged on the outer wheel (6), between which inner wheel vane(s) (7) and outer wheel vane(s) (8) are formed pressure chambers (9, 9a).

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.

Abstract: A camshaft adjustment assembly (1), wherein a control valve (4) is provided for controlling the flow of the pressure fluid in the hydraulic chamber, wherein the control valve (4) is supplied with pressure fluid from the region of a camshaft bearing (5) by a fluid channel (6, 7, 8, 9). In order to enable an improved fluid line with little component weakening, the fluid channel (6, 7, 8, 9) is formed as an annular chamber (6), which is formed between the axial end (10) of the camshaft (2) at least sections of which have a tubular design, a flange-like section (11) of a housing element (12) that is connected rotationally fixed to the camshaft (2) and in which the control valve (4) is mounted, a radially inner delimiting surface (13) of the housing element (12), and a section (14) of the wall of the camshaft bearing (5).

Abstract: A camshaft adjuster (1) for an internal combustion engine, which is attached on the end to a camshaft (2) and which acts as a transmission element to a drive wheel (3) for the rotating drive of the camshaft (2), with an internal wheel (4) locked in rotation with the camshaft (2) and a coaxial external wheel (5) that can rotate relative to the internal wheel. A control valve with a valve slide (6) is provided for controlling a fluid for pressurizing pressure spaces (20) arranged between the internal wheel (4) and the external wheel (5), and is provided coaxial to the internal wheel (4), in order to create angular adjustment between the internal wheel (4) and the external wheel (5).

Abstract: A control valve for a device for the variable adjustment of the valve timing of gas exchange valves of an internal combustion engine. The control valve has a substantially hollow-cylindrical valve box, a control piston and a securing ring. The valve box is arranged in a receptacle inside the device, the securing ring projects over the valve box in the radial direction and the control piston is arranged so as to be axially displaceable inside the valve box.

Abstract: A control valve which has a substantially cylindrical valve box and a substantially cylindrical control piston. The control valve can be arranged in a cylindrical receptacle and the control piston is arranged so as to be axially displaceable inside the valve box.

Abstract: A central valve of a camshaft adjuster of an internal combustion engine, which has a valve housing, a control piston, and a mounting flange. The valve housing is arranged, at least in part, inside a receptacle inside the camshaft adjuster. The valve housing has at least one inflow connection, one outflow connection, and one working connection. The control piston is arranged axially slidable inside the valve housing. The pressure fluid, which flows to and from the camshaft adjuster, can be controlled by the suitable positioning of the control piston inside the valve housing. Also, the mounting flange is fixedly connected to a wall section of the receptacle, thus determining the axial position of the valve housing relative to the camshaft adjuster.