Abstract: A fuel injector having an improved sealing of an intake nozzle with respect to the receiving opening of a fuel distribution rail. A support ring, which engages with the sealing ring on the intake side, is provided at the intake nozzle. The support ring includes a planar underside for resting on a shoulder of the intake nozzle and a V-shaped contact surface facing the sealing ring. The support ring, which is acted on by the sealing ring, is provided with the V-shaped conical contact surface for the sealing ring that ensures that in the case of increased pressures, a minor radial escape of the support ring is made possible to the radial inside and outside and thus radial gaps and an extruding of the sealing ring into same are prevented.

Abstract: An injector for injecting a fluid includes a base body having an opening and a sealing seat, a spray-orifice disk having at least one spray orifice, and a clamping ring, the spray-orifice disk being disposed in the opening of the base body, and a first nonpositive connection is provided between the spray-orifice disk and the base body, and a second nonpositive connection is provided between the base body and the clamping ring.

Abstract: A fuel injector having an improved sealing of an intake nozzle with respect to the receiving opening of a fuel distribution rail. A support ring, which engages with the sealing ring on the intake side, is provided at the intake nozzle. The support ring includes a planar underside for resting on a shoulder of the intake nozzle and a V-shaped contact surface facing the sealing ring. The support ring, which is acted on by the sealing ring, is provided with the V-shaped conical contact surface for the sealing ring that ensures that in the case of increased pressures, a minor radial escape of the support ring is made possible to the radial inside and outside and thus radial gaps and an extruding of the sealing ring into same are prevented.

Abstract: A valve, in particular, a fuel injector, has an improved sealing at its spray-side end. The fuel injector includes an excitable actuator for actuating a valve closing body, which together with a valve seat surface formed on a valve seat body forms a seal seat, and spray openings formed downstream of the valve seat surface, and a valve seat support, which accommodates the valve seat body, forms a portion of a valve housing and is fixedly connected to the valve seat body. A plastically deformable sealing element is introduced into an annular gap between the valve seat support and the valve seat body to avoid corrosion and damage of a weld seam.

Abstract: The valve according to the present invention, in particular, a fuel injector, is characterized by having an improved sealing at its spray-side end. The fuel injector (1) includes an excitable actuator (15) for actuating a valve closing body (12), which together with a valve seat surface (14) formed on a valve seat body (13) forms a seal seat, and spray openings (4) formed downstream of the valve seat surface (14), and a valve seat support (10), which accommodates the valve seat body (13), forms a portion of a valve housing (22) and is fixedly connected to the valve seat body (13). A plastically deformable sealing element (45) is introduced into an annular gap (35) between the valve seat support (10) and the valve seat body (13) to avoid corrosion and damage of a weld seam (30). The fuel injector is particularly suitable for directly injecting fuel into a combustion chamber of a mixture-compressing spark ignition internal combustion engine.

Abstract: The fuel injector according to the invention is distinguished in that a particularly high structural strength and vibration resistance of the valve seat body (5) is provided. The fuel injector (1) includes an excitable actuator for actuating a valve closing body, which forms a seal seat together with a valve seat surface (6) formed on a valve seat body (5), and injection openings (7), which are formed downstream of the valve seat surface (6), the injection openings (7) being introduced into a middle area (44) of the valve seat body (5) protruding outwardly like a cone in the injection direction. The cone-like axially protruding middle area (44) of the valve seat body (5) ends radially outside the orifice areas of all injection openings (7) in a recessed depression (47), from which, in turn, an axially protruding border area (48) of the valve seat body (5) adjoins radially outwardly, so that an overall wavy cone contour of the valve seat body (5) is formed in cross section.

Abstract: An injector for injecting a fluid includes a base body having an opening and a sealing seat, a spray-orifice disk having at least one spray orifice, and a clamping ring, the spray-orifice disk being disposed in the opening of the base body, and a first nonpositive connection is provided between the spray-orifice disk and the base body, and a second nonpositive connection is provided between the base body and the clamping ring.

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: 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: The fuel injector is characterized in that a multi-fan jet nozzle is disposed downstream of a valve-seat member having a fixed valve seat. The multi-fan jet nozzle is disk shaped, having a middle, bulged, crest-like nozzle area that has an elliptical elongation. In the nozzle area of the multi-fan jet nozzle used as an atomizer device, a plurality of directionally parallel spray-discharge slots is provided, which, for example, are arranged in a row. The fuel injector is particularly suitable for use in fuel-injection systems of mixture-compressing internal combustion engines having externally supplied ignition.

Abstract: A fuel injector includes an orifice plate situated downstream from a valve-seat body having a fixed valve seat, the orifice plate having at least one outlet opening. Provided directly upstream from the outlet openings is an inflow opening having an annular inflow cavity. The valve-seat body covers the inflow cavity in such a way that the downstream outlet openings of the orifice plate are covered. The inflow cavity directly upstream from the at least one outlet opening is configured such that the flow approaches the at least one outlet opening largely at a right angle to the longitudinal extension of the outlet opening. With regard to the cross section, the at least one outlet openings has a polygonal form, in particular one that encloses at least one triangle, or it has a meander shape with a plurality of curves in the outer contour. The fuel injector may be particularly suitable for use in fuel injection systems of the mixture-compressing internal combustion engines having external ignition.