Abstract: The invention relates to a hydraulic valve (1), which comprises an electromagnet (2) with a magnet armature (3) as well as the valve part (4) with at least two valve seats (5, 6). The electromagnet (2) is formed by a hollow-cylindrical plastic coil former (8), a coil winding (10) which is accommodated in the latter and a magnet housing (11) which encloses the coil winding (10), the hollow cylinder of the coil former (8) being formed as an armature space (14) of the magnet armature (3), into which an upper magnet pole (15) and a lower magnet pole (16) protrude. The valve part (4) is formed by a hollow-cylindrical valve housing (18), which has a pressure connection (P) at the end as well as a consumer connection (A) and a tank connection (T), respectively arranged in its lateral surface (19), in the hollow cylinder of which housing two cup-shaped deep-drawn parts (23, 24) with the valve seats (5, 6) are pressed.

Abstract: The invention relates to a hydraulic valve (1), which comprises an electromagnet (2) with a magnet armature (3) as well as the valve part (4) with at least two valve seats (5, 6). The electromagnet (2) is formed by a hollow-cylindrical plastic coil former (8), a coil winding (10) which is accommodated in the latter and a magnet housing (11) which encloses the coil winding (10), the hollow cylinder of the coil former (8) being formed as an armature space (14) of the magnet armature (3), into which an upper magnet pole (15) and a lower magnet pole (16) protrude. The valve part (4) is formed by a hollow-cylindrical valve housing (18), which has a pressure connection (P) at the end as well as a consumer connection (A) and a tank connection (T), respectively arranged in its lateral surface (19), in the hollow cylinder of which housing two cup-shaped deep-drawn parts (23, 24) with the valve seats (5, 6) are pressed.

Abstract: The invention concerns a hydraulic valve (1) that comprises an electromagnet (2) having an armature (3), and a valve part (4) having at least two valve seats (5, 6). The electromagnet (2) is formed by a hollow cylindrical plastic coil spool (8), a coil winding (10) received in the coil spool (8) and a magnet housing (11) surrounding the coil winding (10), the hollow cylinder of the coil spool (8) being configured as an armature space (14) for the armature (3), into which armature space (14) an upper pole (15) and a lower pole (16) of the electromagnet (2) extend. The valve part (4) is formed by a hollow cylindrical valve housing (18) that comprises a pressure delivery connection (P) on one front end, as well as a load connection (A) and a tank connection (T) arranged on its peripheral surface and, pressed into its hollow cylinder, two cup-shaped deep-drawn parts (23, 24) comprising the valve seats (5, 6).

Abstract: Directional control valve, in particular a hydraulic 3/2-way directional control valve, having an actuating unit (1) and a valve unit (2), which is operatively connected to the actuating unit and in which a valve element (9), displaceable by the actuating unit (1) and having a tappet (14), controls ducts (4, 5, 6) of the valve unit (2) carrying hydraulic pressure medium, the actuating unit (1) having at least one coil (21), a magnetic core (18), which is arranged at least partially inside the coil (21), is of cylindrical design and has an end-face limit (22), and a moveable armature (15) interacting electromagnetically with the magnetic core (18) and comprising an end face (16), the armature being operatively connected to the tappet (14), the internal dimensions of the magnetic core (18) being larger than the external dimensions of the armature (15) and the magnetic core (18) and the armature (15) being arranged, formed and aligned in conjunction with the length of the tappet (14) so that the end face (16) of

Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.

Abstract: The invention concerns a hydraulic valve (1) that comprises an electromagnet (2) having an armature (3), and a valve part (4) having at least two valve seats (5, 6). The electromagnet (2) is formed by a hollow cylindrical plastic coil spool (8), a coil winding (10) received in the coil spool (8) and a magnet housing (11) surrounding the coil winding (10), the hollow cylinder of the coil spool (8) being configured as an armature space (14) for the armature (3), into which armature space (14) an upper pole (15) and a lower pole (16) of the electromagnet (2) extend. The valve part (4) is formed by a hollow cylindrical valve housing (18) that comprises a pressure delivery connection (P) on one front end, as well as a load connection (A) and a tank connection (T) arranged on its peripheral surface and, pressed into its hollow cylinder, two cup-shaped deep-drawn parts (23, 24) comprising the valve seats (5, 6).

Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.

Abstract: An electromagnetic hydraulic valve (1), which including an electromagnet (2) with an armature (3) and of a valve housing (4) with an axial bore (5) and a piston valve (6) located therein is provided. The valve housing (4) includes several annular grooves (8, 9, 10) in which several radial openings (11, 12, 13) are located, which open into the axial bore (5), through which the hydraulic valve (1) has a fluid connection with a pressure connection (P), a tank connection (T) and two consumer connections (A, B). The piston valve (6) is acted upon by the armature (3) of electromagnet (2) and includes two ring-shaped control sections (14, 15), which connect alternatively the pressure connection (P) and the tank connection (T) with one of the consumer connections (A, B) through axial movement of piston valve (6). According to the invention, the radial openings (11, 12, 13) in valve housing (4) are provided as windows having a rectangular cross section.

Abstract: A device for changing the control times of gas exchange valves of an internal combustion engine, including a drive wheel in driving connection with a crankshaft and a vane wheel connected to rotate with a camshaft. A plurality of hydraulic working spaces are formed within the device and are divided by the vanes of the vane wheel into respectively A and B pressure chambers. The vane wheel can be mechanically coupled to the drive wheel by a locking element, which is displaceable by a spring element into a locking position within a seat in one of the sidewalls of the drive wheel, and is hydraulically moved into an unlocked position in the vane wheel upon application of pressure to the pressure chambers. The locking element is a generally uniform cylindrical locking pin, and is arranged in an axial bore in the hub of the vane wheel. The longitudinal axis of the axial bore has a smallest possible distance from the longitudinal mid-axis of the device.

Abstract: An arrangement 7 of a dual oil feed variable timed camshaft is provided. The arrangement includes a camshaft 10 which has a radial side 22 and an end face 26. The camshaft 10 has first and second passages 30, 42 fluidly connecting end face 26 with the radial side 22. A hub 60 is connected with camshaft end face 26. The hub 60 has a central opening 68 intersecting with the first and second passages 30, 42. The hub 60 has at least first and second axial spaced radial passages 80, 82 intersecting with the hub central opening 68. A timing pulley 90 has relative rotational movement with respect to the hub 60. The timing pulley 90 and the hub 60 define pressure chambers 104 which are divided by vanes 88 into retard angle spaces 108 intersecting with the hub first radial passages 80 and advance angle spaces 112 intersecting with the hub second radial passage 82.

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function when the filter element (6) is stopped up or filtering highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

Abstract: A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a bypass function when the filter element (6) is stopped up or with highly viscous fluid. The fluid inlet (3) of the sieve filter (1) is constructed with the bypass function in that it has a smaller outside diameter than the fluid outlet (4) and is sealed off by a pressure relief valve (7). When the filter element (6) is stopped up or with highly viscous fluid in the line, the fluid inlet (3) is cleared by opening the pressure relief valve (7) as a bypass, through which the fluid is conducted unfiltered to the fluid outlet (4) of the sieve filter (1).

Abstract: A device for changing the control times of gas exchange valves in an internal combustion engine including a crankshaft driven component, and a camshaft component driven by a camshaft and affixed thereto is provided. The crankshaft driven component is connected to the camshaft component for power transmission via two pressure chambers. The pressure action causes a relative rotation or hydraulic adjustment of the camshaft component relative to the crankshaft driven component. In addition, the device has an impulse generator wheel fixed to the camshaft component, for ascertaining the position of the camshaft, and a spring attached to the two components for rotating the camshaft to a preferred position for starting the internal combustion engine. The spring is arranged outside the device in a hollow space located between the impulse generator wheel and the axial side facing the wheel, and is enclosed at least on two sides by the impulse-generator wheel.

Abstract: A device for changing the control times of gas exchange valves of an internal combustion engine, including a drive wheel in driving connection with a crankshaft and a vane wheel connected to rotate with a camshaft. A plurality of hydraulic working spaces are formed within the device and are divided by the vanes of the vane wheel into respectively A and B pressure chambers. The vane wheel can be mechanically coupled to the drive wheel by a locking element, which is displaceable by a spring element into a locking position within a seat in one of the sidewalls of the drive wheel, and is hydraulically moved into an unlocked position in the vane wheel upon application of pressure to the pressure chambers. The locking element is a generally uniform cylindrical locking pin, and is arranged in an axial bore in the hub of the vane wheel. The longitudinal axis of the axial bore has a smallest possible distance from the longitudinal mid-axis of the device.

Abstract: An arrangement 7 of a dual oil feed variable timed camshaft is provided. The arrangement includes a camshaft 10 which has a radial side 22 and an end face 26. The camshaft 10 has first and second passages 30, 42 fluidly connecting end face 26 with the radial side 22. A hub 60 is connected with camshaft end face 26. The hub 60 has a central opening 68 intersecting with the first and second passages 30, 42. The hub 60 has at least first and second axial spaced radial passages 80, 82 intersecting with the hub central opening 68. A timing pulley 90 has relative rotational movement with respect to the hub 60. The timing pulley 90 and the hub 60 define pressure chambers 104 which are divided by vanes 88 into retard angle spaces 108 intersecting with the hub first radial passages 80 and advance angle spaces 112 intersecting with the hub second radial passage 82.

Abstract: A device (1) for changing the control times of gas exchange valves in an internal combustion engine including a crankshaft driven component (4), and a camshaft component (5) driven by a camshaft (3) and fixed to the camshaft is provided. The crankshaft driven component (4) is connected to the camshaft component (5) for power transmission with the help of at least two pressure chambers formed within the device (1). The pressure action causes a relative rotation or a hydraulic adjustment of the camshaft component (5) relative to the crankshaft driven component (4). In addition, the device (1) has an impulse generator wheel (12) fixed to the camshaft component (5), for ascertaining the position of the camshaft (3), and a spring (13) attached to the two components, i.e. the camshaft component (5) and the crankshaft driven component (4), for rotating the camshaft (3) to a preferred position for starting the internal combustion engine.

Abstract: A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a bypass function when the filter element (6) is stopped up or with highly viscous fluid. The fluid inlet (3) of the sieve filter (1) is constructed with the bypass function in that it has a smaller outside diameter than the fluid outlet (4) and is sealed off by a pressure relief valve (7). When the filter element (6) is stopped up or with highly viscous fluid in the line, the fluid inlet (3) is cleared by opening the pressure relief valve (7) as a bypass, through which the fluid is conducted unfiltered to the fluid outlet (4) of the sieve filter (1).

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function as well when the filter element (6) is stopped up or with highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

Abstract: A valve timing control apparatus, includes a drive wheel in driving relation with the crankshaft and has a hollow space with at least one hydraulic working chamber demarcated by two boundary walls extending inwardly from an inner wall surface of the drive wheel. Mounted in fixed rotative engagement with the camshaft and fitted in the hollow space of the drive wheel is a rotatable impeller having at least one vane to subdivide the working chamber in two hydraulic pressure compartments. A seal, positioned between a free end face of the vane of the impeller and the inner wall surface of the drive wheel, fluidly seals the pressure compartments from one another and is formed by a roller-type sealing member spring-mounted in radial direction in an axial groove of the vane.

Abstract: An electromagnet (1), particularly a proportional magnet for operating a hydraulic valve, said electromagnet (1) comprising at least one coil winding (3) carried by a hollow cylindrical coil spool (2) which is circumferentially surrounded by a hollow cylindrical magnet housing (4) and limited at each end by a pole shoe (5, 6), said electromagnet (1) further comprising an axially moveable cylindrical armature (8) which is arranged in a hollow cylinder of the coil spool (2) that is configured as an armature space (7), the armature (8) being mounted for low friction in rotary, longitudinally moveable axial guides, and electromagnetically produced axial movements of the armature (8) can be transmitted to a hydraulic valve piston via a push rod (10) which is connected to the armature (8) to form an axial extension thereof.