The invention relates to a method for producing a metering valve (1) for a fluid, in particular for a liquid and/or gaseous fuel, comprising a preferably plate-shaped valve seat element (2) having at least one throughflow opening (3) for the liquid and/or gaseous fuel, a lift-movable valve disk (4) that sealingly interacts with the valve seat element (2) for releasing and closing the at least one throughflow opening (3), and a stroke stop element (5) having an annular stroke stop surface (6) for limiting the stroke of the valve disk (4). According to the invention, the stroke stop element (5) is axially pretensioned in the direction of a stroke adjustment ring (7) surrounding the valve disk (4). In order to finely adjust the stroke of the valve disk (4), the axial pretensioning force is altered, whereby the stroke stop element (5) is deformed. The invention further relates to a metering valve (1) for a fluid.

A valve assembly for a pump includes an electrical actuator having a stator and an armature, where the armature includes a top armature surface facing the stator and having an inwardly stepped-up profile that forms a raised surface at a radially inward location, and a lower, gap-forming surface at a radially outward location that forms a gap between the armature and the stator when the electrical actuator is activated to facilitate displacing fluid and avoiding production of high velocity, potentially damaging fluid flows.

The invention relates to a method for producing a metering valve (1) for a fluid, in particular for a liquid and/or gaseous fuel, comprising a preferably plate-shaped valve seat element (2) having at least one throughflow opening (3) for the liquid and/or gaseous fuel, a lift-movable valve disk (4) that sealingly interacts with the valve seat element (2) for releasing and closing the at least one throughflow opening (3), and a stroke stop element (5) having an annular stroke stop surface (6) for limiting the stroke of the valve disk (4). According to the invention, the stroke stop element (5) is axially pretensioned in the direction of a stroke adjustment ring (7) surrounding the valve disk (4). In order to finely adjust the stroke of the valve disk (4), the axial pretensioning force is altered, whereby the stroke stop element (5) is deformed. The invention further relates to a metering valve (1) for a fluid.

A solenoid assembly includes a solenoid actuator having a core. A coil is configured to be wound at least partially around the core such that a magnetic flux () is generated when an electric current flows through the coil. An armature is configured to be movable based on the magnetic flux (). A controller has a processor and tangible, non-transitory memory on which is recorded instructions for controlling the solenoid assembly. The controller is configured to obtain a plurality of model matrices, a coil current (i.sub.1) and an eddy current (i.sub.2). The magnetic flux () is obtained based at least partially on a third model matrix (C.sub.0), the coil current (i.sub.1) and the eddy current (i.sub.2). Operation of the solenoid actuator is controlled based at least partially on the magnetic flux (). In one example, the solenoid actuator is an injector.

A valve assembly for a pump includes an electrical actuator having a stator and an armature, where the armature includes a top armature surface facing the stator and having an inwardly stepped-up profile that forms a raised surface at a radially inward location, and a lower, gap-forming surface at a radially outward location that forms a gap between the armature and the stator when the electrical actuator is activated to facilitate displacing fluid and avoiding production of high velocity, potentially damaging fluid flows.

A solenoid assembly includes a solenoid actuator having a core. A coil is configured to be wound at least partially around the core such that a magnetic flux () is generated when an electric current flows through the coil. An armature is configured to be movable based on the magnetic flux (). A controller has a processor and tangible, non-transitory memory on which is recorded instructions for controlling the solenoid assembly. The controller is configured to obtain a plurality of model matrices, a coil current (i.sub.1) and an eddy current (i.sub.2). The magnetic flux () is obtained based at least partially on a third model matrix (C.sub.0), the coil current (i.sub.1) and the eddy current (i.sub.2). Operation of the solenoid actuator is controlled based at least partially on the magnetic flux (). In one example, the solenoid actuator is an injector.

The solenoid device drives a valve unit of a solenoid valve provided to a fuel injection device by an electromagnetic force and comprises: a core formed in a cylindrical shape and having an opposing surface that opposes the valve unit; a coil wound around the core; and a recessed portion formed at a position in the opposing surface of the core that overlaps with the valve unit as viewed from the axial direction of the center axis of the core.

In some embodiments, the injector valves have additional flow holes in the seat face to reduce flow variation, decrease package size and allow for a fast response. In another embodiment, the injector valve has a seat with multiple flow channels leading to a venturi, allowing for a fast response and decreased package size.

A fuel injection system is provided. The system includes a completely sealed housing surrounding the key components of the fuel injection system.

In some embodiments, the injector valves have additional flow holes in the seat face to reduce flow variation, decrease package size and allow for a fast response. In another embodiment, the injector valve has a seat with multiple flow channels leading to a venturi, allowing for a fast response and decreased package size.