Abstract: A fuel injector for fuel-injection systems of internal combustion engines includes an actuator, a valve needle, which is able to be activated by the actuator to actuate a valve-closure member, which, together with a valve-seat surface formed at a valve-seat member, forms a sealing seat; and at least one spray-discharge orifice which is formed in the valve-seat member. At a downstream end of the fuel injector, a flameproofing screen is positioned, which shields the spray-discharge orifices from the combustion chamber of the internal combustion engine.

Abstract: A fuel injector (1) is provided with a magnetic coil (10), which cooperates with an armature (20) acted upon by a restoring spring (23), the armature forming an axially movable valve part together with a valve needle (3). A valve-closure member (4), which forms a sealing seat with a valve-seat member (5), is provided at the valve needle (3). A flange (14), which penetrates the armature (20) through an opening (19) of the armature (20) and which is connected to the valve needle (3) by force-locking, has at least one radial fuel channel (11) with whose aid an inner chamber (29) of the fuel injector (1) is able to be connected to a recess (22) of the valve needle (3) upon actuation of the fuel injector (1).

Abstract: A fuel injector with a magnetic coil, which cooperates with an armature acted upon by a restoring spring, the armature forming an axially movable valve part together with a valve needle. A valve-closure member, which forms a sealing seat with a valve-seat member, is provided at the valve needle. An inner pole and an outer pole form a magnetic circuit with the magnetic coil. A membrane is positioned at an inflow-side end face of the inner pole, which includes at least one orifice, which is covered by the inner pole in the dosed state of the fuel injector.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines includes an actuator, a valve needle, which is able to be activated by the actuator to actuate a valve-closure member, which, together with a valve-seat surface formed at a valve-seat member, forms a sealing seat; and a plurality of spray-discharge orifices which is formed in the valve-seat member. At a discharge-side end of the fuel injector, a nozzle-orifice cover is positioned, which shields the spray-discharge orifices from the combustion chamber of the internal combustion engine.

Abstract: A fuel injector (1) for fuel-injection systems of internal combustion engines includes an actuator (10), a valve needle (3), which is able to be activated by the actuator to actuate a valve-closure member (4), which, together with a valve-seat surface (6) formed at a valve-seat member (5), forms a sealing seat; and a plurality of spray-discharge orifices (7) which is formed in the valve-seat member (5). At a discharge-side end (42) of the fuel injector (1), a nozzle-orifice cover (37) is positioned, which shields the spray-discharge orifices (7) from the combustion chamber of the internal combustion engine.

Abstract: A fuel injector (1) for fuel-injection systems of internal combustion engines includes an actuator (10), a valve needle (3), which is able to be activated by the actuator to actuate a valve-closure member (4), which, together with a valve-seat surface (6) formed at a valve-seat member (5), forms a sealing seat; and at least one spray-discharge orifice (7) which is formed in the valve-seat member (5). At a downstream end (42) of the fuel injector (1), a flameproofing screen (37) is positioned, which shields the spray-discharge orifices (7) from the combustion chamber of the internal combustion engine.

Abstract: A fuel injector, for example, a high-pressure injection valve for the direct injection of fuel into a combustion chamber of an internal combustion engine having external ignition, which is distinguished in that an outlet orifice is provided downstream from the valve seat which, at its downstream end, has a slot-forming element that largely closes off the outlet orifice. Between the outlet orifice and a front face of the valve-seat member, the slot-forming element leaves open a slot-shaped flow outlet, through which a fuel spray may be spray-discharged in a fan-jet pattern.

Abstract: A fuel injector (1) is provided with a magnetic coil (10), which cooperates with an armature (20) acted upon by a restoring spring (23), the armature forming an axially movable valve part together with a valve needle (3). A valve-closure member (4), which forms a sealing seat with a valve-seat member (5), is provided at the valve needle (3). A flange (14), which penetrates the armature (20) through an opening (19) of the armature (20) and which is connected to the valve needle (3) by force-locking, has at least one radial fuel channel (11) with whose aid an inner chamber (29) of the fuel injector (1) is able to be connected to a recess (22) of the valve needle (3) upon actuation of the fuel injector (1).

Abstract: A fuel injector with a magnetic coil, which cooperates with an armature acted upon by a restoring spring, the armature forming an axially movable valve part together with a valve needle. A valve-closure member, which forms a sealing seat with a valve-seat member, is provided at the valve needle. An inner pole and an outer pole form a magnetic circuit with the magnetic coil. A membrane is positioned at an inflow-side end face of the inner pole, which includes at least one orifice, which is covered by the inner pole in the closed state of the fuel injector.

Abstract: The present invention relates to a fuel injector, particularly a high-pressure injection valve for the direct injection of fuel into a combustion chamber of an internal combustion engine having external ignition, which is distinguished in that an outlet orifice (23) is provided downstream from the valve seat (20) which, at its downstream end, has a slot-forming element (30) that largely closes off the outlet orifice (23). Between it and a front face (34) of the valve-seat member (16), the slot-forming element (30) leaves open a slot-shaped flow outlet (35), through which a fuel spray may be spray-discharged in a fan-jet pattern.

Abstract: Fuel injection valve is described which possesses a multilayer swirl valve downstream from a valve seat shaped onto a valve seat element, at least these two components being installed from the inflow direction into a passthrough opening of a valve seat support. The valve seat support has a lower base region that provides for a reduction in the cross section of the passthrough opening downstream from the valve seat. The fuel injection valve is suitable in particular for direct injection of fuel into a combustion chamber of a mixture-compressing, spark-ignited internal combustion engine.

Abstract: The invention relates to a fuel injection valve which is characterized in that it possesses a multilayer swirl valve (30) downstream from a valve seat (15) shaped onto a valve seat element (13), at least these two components being installed from the inflow direction into a passthrough opening (10) of a valve seat support (9). The valve seat support (9) has a lower base region (17) that provides for a reduction in the cross section of the passthrough opening (10) downstream from the valve seat (15).

Abstract: A fuel injection valve is described which has a swirl disk downstream from a valve seat, the swirl disk being made of at least one metallic material, having at least two swirl channels opening into a swirl chamber, and in which all layers are adheringly deposited directly one on top of the other by electroplating (multilayer electroplating). The swirl disk is installed in the valve so that the surface normal to its surface forms an oblique angle other than 0° with the longitudinal valve axis, so that a jet angle &ggr; with respect to the longitudinal valve axis is formed due to the orientation of the swirl disk. The fuel injection valve is particularly well suited for direct injection of fuel into the combustion chamber of a compressed mixture externally ignited internal combustion engine.

Abstract: An atomizer disk is composed of at least one metallic material, is configured with at least one inlet opening in an upper cover layer and at least one outlet opening in a lower base layer, and has at least two swirl channels that terminate into a swirl chamber, the swirl chamber being provided in a middle swirl generation layer. Through the inlet opening and the swirl channels, two flows of different natures (biflux) enter the swirl chamber. All the layers of the atomizer disk are built up directly onto one another by electroplating metal deposition (multilayer electroplating). The atomizer disk is suitable for use in a fuel injection valve, in particular a high-pressure injection valve for direct injection of fuel into a combustion chamber of a mixture-compressing, spark-ignited internal combustion engine.

Abstract: The orifice plate has a complete fluid passageway including inlet orifices, outlet orifices and at least one channel (cavity) disposed between them. The at least three functional levels of the orifice plate, having in each case a characteristic orifice structure, are constructed one on top of the other through electrodeposition (multi-layer electroplating), so the orifice plate is embodied in one piece. Because the orifice plate should be hydraulically unthrottled if the available plate surface is small, the inlet orifices are created with the largest possible circumferences. The orifice plate is particularly suited for use at injection valves, in paint nozzles, inhalers or ink-jet printers, in freeze-drying methods, for spraying or injecting fluids, or for atomizing medications.