Abstract: A fluid metering valve includes a valve-seat surface; a valve closing element that interacts with the valve-seat surface in order to form a sealing seat; an electromagnetic actuator; a valve needle used for operating the valve-closing element; an armature that is guided on the valve needle and is used for opening or closing the sealing seat; at least one stop that is disposed on, and stationary relative to, the valve needle and that restricts a movement of the armature on the valve needle; and at least one damping element that is configured to provide a damping during the opening or closing of the sealing seat, has a volume that is able to be filled with a fluid medium, is configured such that a fluid medium can be exchanged between the volume and an environment of the damping element, and is configured for volume changes of the volume in order to enable the damping.

Abstract: A decoupling element is described for a fuel injection device which is characterized in particular by a low-noise design. The fuel injection device includes at least one fuel injector, a receiving bore in a cylinder head for the fuel injector, and the decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element is designed as a decoupling system having a spring ring and a conical washer. The fuel injection device is suitable for injecting fuel into a combustion chamber of a mixture-compressing spark-ignition internal combustion engine in particular.

Abstract: A valve for metering a fluid, which is used in particular as a fuel injector for internal combustion engines, includes an electromagnetic actuator and a valve needle, which is actuatable by the actuator, and is used for actuating a valve closing body, which interacts with a valve seat surface to form a seal seat. An armature of the actuator has a through hole, through which the valve needle extends. The armature is guided on the valve needle movably and with clearance. Furthermore, a stop surface which is fixed in place with respect to the valve needle is provided, on which the armature strikes with its end face in conjunction with an actuation. During an axial alignment of the armature with respect to the valve needle, an angle offset is predefined between the stop surface and the end face of the armature.

Abstract: A valve for metering fluid is reported which has a valve housing having a valve opening and a valve seat, a valve needle, which is provided for the alternating closing and opening of the valve using a closing member cooperating with the valve seat, a resetting element that acts on the valve needle for closing the valve and an electromagnet that is able to have current applied to it, having a magnet armature that is drivable to a lift motion, which sits axially displaceably on the valve needle and carries along the valve needle in the lift direction for opening the valve via a driving flange situated on it. To simplify production and the assembly of the valve while achieving the advantages characteristic in valves having a prestroke spring and an armature free path, the magnet armature is supported on the valve housing using a diaphragm spring.

Abstract: A valve for metering a fluid, which is used in particular as a fuel injector for internal combustion engines, includes an electromagnetic actuator and a valve needle, which is actuatable by the actuator, and is used for actuating a valve closing body, which interacts with a valve seat surface to form a seal seat. An armature of the actuator has a through hole, through which the valve needle extends. The armature is guided on the valve needle movably and with clearance. Furthermore, a stop surface which is fixed in place with respect to the valve needle is provided, on which the armature strikes with its end face in conjunction with an actuation. During an axial alignment of the armature with respect to the valve needle, an angle offset is predefined between the stop surface and the end face of the armature.

Abstract: A decoupling element for a fuel injection device has a low-noise construction. The fuel injection device includes at least one fuel injector and one receiving bore in a cylinder head for the fuel injector and the decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element has a nonlinear progressive spring characteristic as a solid-state joint, at least one bearing collar including a valve contact surface, which is designed to be spherical, i.e., convex, extending upward from a flat annular area, the flat annular area being supported on a supporting base, and the inside of the annular area has a smaller inside diameter D than the bearing collar and the supporting base, which is supported on the wall of the receiving bore.

Abstract: A decoupling element is described for a fuel injection device which is characterized in particular by a low-noise design. The fuel injection device includes at least one fuel injector, a receiving bore in a cylinder head for the fuel injector, and the decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element is designed as a decoupling system having a spring ring and a conical washer. The fuel injection device is suitable for injecting fuel into a combustion chamber of a mixture-compressing spark-ignition internal combustion engine in particular.

Abstract: The fuel injector provides an oncoming flow out of spray-discharge orifices in a manner that reduces variance in the spray and flow-through characteristics variables. The fuel injector includes at least one excitable actuator and a valve element that is movable along a longitudinal valve axis, which collaborates in a sealing manner with a valve seat. Upstream of the valve seat, circumferentially a plurality of flow-through regions are provided, between which there are guidance regions for the valve element. The spray-discharge orifices downstream from the valve seats, whose number differs from the number of the flow-through regions, discharge the fuel finely atomized. At least two flow-through regions differ in size, such as circumferential width and/or radial depth, and/or contour. The fuel injector directly injects fuel into a combustion chamber of an engine using compression of a fuel/air mixture and spark ignition.

Abstract: A valve for metering fluid is reported which has a valve housing having a valve opening and a valve seat, a valve needle, which is provided for the alternating closing and opening of the valve using a closing member cooperating with the valve seat, a resetting element that acts on the valve needle for closing the valve and an electromagnet that is able to have current applied to it, having a magnet armature that is drivable to a lift motion, which sits axially displaceably on the valve needle and carries along the valve needle in the lift direction for opening the valve via a driving flange situated on it. To simplify production and the assembly of the valve while achieving the advantages characteristic in valves having a prestroke spring and an armature free path, the magnet armature is supported on the valve housing using a diaphragm spring.

Abstract: A decoupling element for a fuel injection device has a low-noise construction. The fuel injection device includes at least one fuel injector and one receiving bore in a cylinder head for the fuel injector and the decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element has a nonlinear progressive spring characteristic as a solid-state joint, at least one bearing collar including a valve contact surface, which is designed to be spherical, i.e., convex, extending upward from a flat annular area, the flat annular area being supported on a supporting base, and the inside of the annular area has a smaller inside diameter D than the bearing collar and the supporting base, which is supported on the wall of the receiving bore.

Abstract: The fuel injector provides an oncoming flow, that is uniform and stable in time, of the spray-discharge orifices is produced and consequently, and a reduction in variance in the spray and flow-through characteristics variables. The fuel injector includes at least one excitable actuator and a valve element that is movable along a longitudinal valve axis, which collaborates in a sealing manner with a valve seat. Upstream of the valve seat, circumferentially a plurality of flow-through regions are provided, between which there are guidance regions for the valve element. The spray-discharge orifices downstream from the valve seats, whose number differs from the number of the flow-through regions, discharge the fuel finely atomized. At least two flow-through regions differ in size, such as circumferential width and/or radial depth, and/or contour. The fuel injector directly injects fuel into a combustion chamber of an engine using compression of a fuel/air mixture and spark ignition.

Abstract: A fuel injector is described having a multi-orifice nozzle provided with a multitude of spray orifices through which fuel is injected, the multi-orifice nozzle having at least two spray orifices that have different spray-orifice diameters. Furthermore, a method is described for producing, by laser drilling, a multi-orifice nozzle having a multitude of spray orifices, at least two spray orifices having different spray orifice diameters.

Abstract: A fuel injector, especially for the direct injection of fuel into a combustion chamber of an internal combustion engine, includes a nozzle body able to be inserted into a recess of a cylinder head, a valve housing, a plug abutting the valve housing, and at least one fixation element, which fixes the nozzle body in its position in the recess, the fixation element extending from a connection region (28) between the valve housing and the plug on the spray-discharge side. The at least one fixation element has a reinforcement having a spherical contour at an outer periphery, the reinforcement being formed by at least one outwardly projecting element having an outwardly curving end face and/or having a planar end face.

Abstract: A fuel injector, especially for the direct injection of fuel into a combustion chamber of an internal combustion engine, includes a nozzle body able to be inserted into a recess of a cylinder head, a valve housing, a plug abutting the valve housing, and at least one fixation element, which fixes the nozzle body in its position in the recess, the fixation element extending from a connection region (28) between the valve housing and the plug on the spray-discharge side. The at least one fixation element has a reinforcement having a spherical contour at an outer periphery, the reinforcement being formed by at least one outwardly projecting element having an outwardly curving end face and/or having a planar end face.

Abstract: A support element is provided for the mutual support of a fuel injector in a valve receptacle, e.g., the valve receptacle of a cylinder head of an internal combustion engine, and of the fuel injector against a fuel distribution line. The support element has a clamp, clips and brackets.

Abstract: A seal for sealing the fuel injector from a valve mount opening of a cylinder head, the seal radially surrounding the region of the discharge-side end of a fuel injector, sealingly rests on the valve mount opening opening via a first section. By way of at least an axial partial section, which extends only across a portion of the axial height of the seal, the seal is fitted in the region of the discharge-side end of the fuel injector in integral fashion, by form-fit and/or force-locking.

Abstract: A support element is provided for the mutual support of a fuel injector in a valve receptacle, e.g., the valve receptacle of a cylinder head of an internal combustion engine, and of the fuel injector against a fuel distribution line. The support element has a clamp, clips and brackets.

Abstract: A seal for sealing the fuel injector from a valve mount opening of a cylinder head, the seal radially surrounding the region of the discharge-side end of a fuel injector, sealingly rests on the valve mount opening opening via a first section. By way of at least an axial partial section, which extends only across a portion of the axial height of the seal, the seal is fitted in the region of the discharge-side end of the fuel injector in integral fashion, by form-fit and/or force-locking.

Abstract: A mounting device for attaching a fuel injector both to a cylinder head of an internal combustion engine and to a fuel distribution line, includes two spring tongues which are insertable into a holding groove of the fuel injector or the fuel distribution line. A distance between the tips of the spring tongues is smaller than the largest diameter of the opening surface enclosed by them, and the spring tongues are radially elastically displaced with respect to an axis of the fuel injector. At least two spring elements, elastically displaced in the axial direction with respect to the spring tongues by either tensile or compressive forces, are formed and are axially non-positively, detachably connectable to the opposite fuel injector or the fuel distribution line via a catch connection.

Abstract: A fuel injector, in particular for the direct injection of fuel into the combustion chamber of an internal combustion engine, includes a valve needle, which cooperates with a valve seat surface to form a sealing seat, and an armature engaging with the valve needle. The armature is arranged on the valve needle in an axially movable manner and damped by a damping element made of an elastomer. Arranged between the armature and the damping element is an intermediate ring, and the damping element rests on a flange that is connected to the valve needle by force locking. Due to the intermediate ring, the armature is supported on the valve needle in a twist-proof manner.