Abstract:
Une vanne de régulation (10) de la pression comprenant un arbre (16) agencé axialement (A) glissant dans un alésage (18) entre une position appuyée PA et une position retirée PR, et une buse (10) comprenant un membre fixe (22) pourvu d'un siège (44) au centre duquel débouche un orifice de décharge (46), et, un membre obturateur (24) et une bille d'une taille suffisante pour obturer l'orifice de décharge (46) de sorte à commuter la buse entre un état ouvert EO, lorsque l'arbre 16 est en position retirée PR et que la bille libère l'orifice de décharge (46), et un état fermé EF lorsque l'arbre 16 est en position appuyée PA et que la bille bouche l'orifice de décharge (46).
Abstract:
An electromagnetic actuator (60) of a pressure-regulating valve (10), the actuator (60) comprising an overmoulded coil connector assembly (62) inserted into an actuator body (64) in the shape of a cylindrical cup. The actuator (60) further comprises a seal (96) arranged between the overmoulded assembly (62) and the actuator body (64) such that the actuator (60) is perfectly sealed.
Abstract:
Valve device for a medium, in particular the fuel of a fuel injection system of an internal combustion engine, wherein the valve device has an anchor bolt 10 that is able to move axially in a guide 9 of a valve body 7, and a valve closure element 11 that cooperates with the anchor bolt 10 and acts in a valve seat 12, and wherein the anchor bolt 10 cooperates, at its end oriented away from the valve closure element 11, with a magnet subassembly 16. The invention provides a valve device formed as a pressure-control valve device 1 for the medium, which valve device includes, as an additional function in addition to the pressure control 1, pressure measurement of the medium. This is achieved in that the valve device has a pressure measurement device that comprises a membrane 24, an optical waveguide 25 and an evaluation device 26.
Abstract:
The invention relates to a pressure-regulating valve (10) for a high-pressure accumulator, said valve comprising a valve body (12) and a valve piece (22), in addition to a closing member (30) that can be displaced in the valve body (12), the valve piece (22) and a valve needle (24) being hydraulically interconnected. A valve seat (23) is formed on an outer face of the valve needle (24) and can be closed off by the closing member (30) being displaced along the lateral surface (26) of the valve needle (24).
Abstract:
The invention relates to a tappet element (2), in particular for a pressure control valve (4), comprising a tappet body (2a), in particular an elongated tappet body. The tappet body has a first side (2b), a second side (2c), and a centre axis (2d). A tappet tip (14) is formed on the first side (2a), which tappet tip is designed to contact a valve ball (6). A driving device (10) for the tappet element (2) can be provided on the second side (2c). The tappet tip (14) has a recess (12) for contacting a valve ball (6). The tappet element is characterised in that the recess (12) has a first region (16a) and a second region (16b), the two regions (16a, b) being arranged concentrically with respect to the centre axis (2d); and a valve ball (6) being movable (18a) on the surface (22a) of the recess (12) substantially in a radial direction (20a) perpendicular to the centre axis (2d) in the first region (16a); and a valve ball (6) being movable (18b) on the surface (22b) of the recess (12) substantially in a combined motion both in the radial direction (20a) and in an axial direction (20b) in the second region (16b).
Abstract:
A pressure control valve (10) comprises a housing (20) with an inlet opening (16) and an outflow opening (18); a valve pin (12) which is guided in the housing (20); and a valve element (36) at one end of the valve pin (12), which valve element (36) is configured to close a valve seat (14) upon movement of the valve pin (12), with the result that a fluid flow (50) between the inlet opening (16) and the outflow opening (18) is interrupted. The valve pin (12) is divided into an armature pin (12a) and a valve needle (12b), wherein the armature pin (12a) has a hollow channel (47) and the valve needle (12b) has at least one side channel (48), with the result that, when the pressure control valve (10) is open, the fluid flow (50) is guided from the inlet opening (16) through the side channel (48) into the hollow channel (47) and from there into the outflow opening (18).
Abstract:
A nozzle (20) able to be arranged in a diesel injection system (6) of the internal combustion engine of a vehicle comprises a fixed member (22) provided with a nozzle seat (44) at the centre of which there opens a discharge orifice (46), the fixed member (22) comprising a cylindrical tubular part (26) defining an inner guide cylinder (42) extending axially (A) from an open first end as far as the seat (44) that forms the closed end of the guide cylinder (42), and a shut-off member (24) arranged and guided in the guide cylinder (42), the shut-off member (24) being able to move between a closed state (EF) when the shut-off member (24) is in abutment against the seat (44) and an open state (EO) when the shut-off member (24) opens the discharge orifice (46). A regulating valve (10) that regulates the fuel pressure in the diesel injection system (6) of an internal combustion engine of a vehicle comprises a body (12) in which an actuator (14) is arranged, the body being provided with an axial (A) bore (18), with a housing (36), with a counterbore (34) and with a discharge duct (40). The valve (10) additionally comprises a shaft (16) arranged axially (A), sliding in the bore (18). The valve (10) is able to accept the nozzle (20), the tubular part (26) being arranged in the housing (36) and the base (30) fitting into the counterbore (34) so as to define an intermediary tubular space (38) between the tubular part (26) and the housing (36) into which the discharge duct (40) opens, the shut-off member (24) being arranged between the shaft (16) and the seat (44). A common rail (8) of a diesel injection system (6) of the internal combustion engine of a vehicle comprises, amongst other things, a counterbore (34) able to accept the nozzle (20), the base (30) fitting into the counterbore (34), the fixed member (22) being attached to the common rail (8).
Abstract:
Die Erfindung betrifft ein Druckregelventil (1), umfassend einen Ventilkörper (2) mit einem eine Ventileinrichtung (16) aufweisenden Steuerraum (9) und einer Magnetspule (4), wobei radial verlaufende Tankbohrungen (20b) in dem Steuerraum (9) enden, eine durch Bestromung der Magnetspule (4) in einem Ankerraum (6) verschiebbaren Anker (5), einen durch den Ventilkörper (2) geführten Ankerstößel (7), welcher einenends mit dem Anker (5) in einer Wirkverbindung steht und andernends zur Betätigung der Ventileinrichtung (16) in den Steuerraum (9) des Ventilkörpers (2) ragt, wobei zur Herstellung eines Druckausgleichs zwischen dem Ankerraum (6) und dem Steuerraum (9) der Anker (5) mit wenigstens einer axialen Druckausgleichsbohrung (10) ausgebildet ist und der Ankerstößel (7) in einem steuerraumseitigen Lager (8b) des Ventilkörpers (2) mit wenigstens einer Druckausgleichsnut (14a, 14b) gelagert ist. Erfindungsgemäß ist vorgesehen, dass die Mündung (14aa, 14bb) der wenigstens einen Druckausgleichsnut (14a, 14b) des steuerraumseitigen Lagers (8b) in den Steuerraum (9) mit der Mündung (20bb) der wenigstens einen Tankbohrung (20b) in den Steuerraum (9) fluchtend oder zumindest annähernd fluchtend angeordnet ist.
Abstract:
For a valve having a pressure limiting function for common-rail heavy oil injection systems for internal combustion engines, comprising a valve carrier (18), a valve piston (21), which is movably supported in the valve carrier (18) and which interacts with a valve seat (22) while the valve is closed, and a compression spring (24) that applies a compressive force acting in the closing direction to the valve piston (21), a pin (30) that acts on the valve piston (21) in the closing direction is arranged in such a way that the pin can be moved with the aid of an actuating element against the compressive force of the compression spring (24) in order to open the valve in a controlled manner in order to develop a flushing function.
Abstract:
Die Erfindung betrifft ein Druckregelventil zur Regelung des Drucks in einem Hochdruck-Kraftstoffspeicher einer Brennkraftmaschine, insbesondere in Common-Rail-Einspritzsystemen, mit einem in einer Bohrung (1) axial verschiebbar geführten und von der Druckkraft einer Feder (2) in Öffnungsrichtung beaufschlagten Ventilkolben (3), der bei Bestromung einer Magnetspule (4) entgegen der Druckkraft der Feder (2) und entgegen dem im Hochdruck-Kraftstoffspeicher herrschenden Druck eine axiale Verschiebung in Richtung eines ersten Ventilsitzes (5) erfährt, wobei der Ventilkolben auf ein mit dem Ventilsitz (5) zusammenwirkendes Ventildichtelement (6) einwirkt, Erfindungsgemäß ist zur Realisierung einer Notfahrt ein zweiter, in einer Ventilplatte (7) ausgebildeter Ventilsitz (8) vorgesehen, der mit dem Ventildichtelement (6) in der Weise zusammenwirkt, dass bei fehlender Bestromung der Magnetspule (4) der im Hochdruck-Kraftstoffspeicher herrschende Druck das Ventildichtelement (6) in dichtender Anlage mit dem zweiten Ventilsitz (8) hält.