Abstract: A fuel injector for direct injection of fuel into a combustion chamber of a mixture-compressing, spark-ignited internal combustion engine, has a nozzle body that forms a housing body with an external pole and a coil housing, a magnet coil that is electrically energizable by way of a lead and a plug contact, and a central fuel supply. The lead and the fuel supply are positioned together in an adapter that can be placed onto an inflow end of the housing body and is joinable thereto.

Abstract: A fuel injector (1), in particular for direct injection of fuel into a combustion chamber of a mixture-compressing, spark-ignited internal combustion engine, has a nozzle body (2) that forms a housing body with an external pole (9) and a coil housing (11), a magnet coil (10) that is electrically energizable by way of a lead (19) and a plug contact (17), and a central fuel supply (16). The lead (19) and the fuel supply (16) are together positioned in an adapter (18) that can be placed onto an inflow end (34) of the housing body and is joinable thereto.

Abstract: A fuel injection valve for fuel injection systems of internal combustion engines includes a core which serves as the internal pole is made of a soft magnetic powder composite material. This powder composite material is an iron powder provided with a polymer additive, where the individual iron particles are coated with an electrically insulating layer. Such a powder composite material ensures a substantial minimization of eddy currents in the magnetic circuit in comparison with materials known previously, such as chromium steel, which are usually used as magnetic materials. The core which is mechanically sensitive and is sensitive to fuel is encapsulated at least with respect to the parts of the injection valve carrying the fuel. A sleeve passes through an internal longitudinal opening in the core which permits fuel flow in its interior and is fixedly attached to a pole part which seals the core toward the bottom. The core and the magnetic coil are thus not exposed to any wetting by fuel.

Abstract: A fuel injection valve, in particular a high-pressure injection valve for the direct injection of fuel into the combustion chamber of a compressed mixture, externally ignited internal combustion engine, has in a guide and seat area provided at the downstream end of the valve which area is formed by three disk-shaped elements. A swirl element is nested between a guide element and a valve seat element. The guide element, which can move radially in the assembled valve and which has an inner guide opening, serves to guide an axially movable valve needle which extends through it, while a valve closing section of the valve needle acts in concert with a valve seat surface of the valve seat element. The guide element is spring-loaded through a compression spring which acts upon it.

Abstract: A fuel injection valve, in particular, a high-pressure injection valve, for injecting fuel directly into a combustion chamber of a compressed-mixture internal combustion engine with externally supplied ignition. The fuel injection valve includes a guide and seating area formed by three disc-shaped elements provided at the downstream end of the valve. A swirl element is embedded between a guide element and a valve seat element. The guide element is used to guide a valve needle which passes through it and can move in the axial direction, while a valve closing segment of the valve needle interacts with a valve seat surface of the valve seat element. The swirl element has an inner opening area with multiple swirl channels which are not joined to the outer circumference of the swirl element. The entire opening area extends completely across the axial thickness of the swirl element.

Abstract: A fuel injection valve in particular an injection valve for fuel injection systems of internal combustion engines has a valve closing body connected to a valve needle and a valve seat body. A valve closing surface that cooperates with a valve seat surface configured on valve seat body to form valve seat on valve closing body. Furthermore, the fuel injection valve has at least one fuel channel provided in the area of the valve seat body upstream from the valve seat for supplying fuel to the fuel seat. A throttle point, whose opening cross section can be varied from outside the fuel injection valve, is arranged in each fuel channel.

Abstract: An injector, in particular for injecting fuel directly into a combustion chamber of an internal combustion engine, having a fuel flow path from a fuel intake to a spray orifice, a plurality of fuel channels being arranged in the flow path in front of the spray orifice, their cross section, given a certain fuel pressure, determining each quantity of fuel spray-discharged per unit of time. To influence the fuel distribution in a spray-discharged fuel cloud and, in particular, to attain a selected strand-like quality of the fuel cloud, provision is made that at least one part of the fuel channels is aligned such that the fuel jets issuing from them are spray-discharged directly through the spray orifice when the valve is open.