Abstract: An injection valve (62) has an injection body (38) with a first cavity (7), wherein a valve body (4) is at least partially disposed and wherein an armature collar (28) is axially movable. The valve body (4) has a second cavity (8), wherein a valve needle (10) is axially movable. An armature (12) is axially movable at least partially within the first cavity (7) and has a first cylindrical portion (32) and a second cylindrical portion (34), which is mechanically coupled to the valve needle (10). A coil assembly (40) is operable to magnetically actuate the armature (12) and the valve needle (10). The armature collar (28) partially takes in the second cylindrical portion (34). An armature collar spring (20) is adopted to supply the armature collar (28) with a spring load to push the armature collar (28) towards the first cylindrical portion (32).

Abstract: A coupling arrangement for coupling an injection valve to a cylinder head of a combustion engine has a housing with a central longitudinal axis coupled to a fuel rail at a first axial end area and to a valve body at a second axial end area of the housing, and the valve body being arranged at the central longitudinal axis having at least one first protrusion arranged facing a second axial end area of a first ring element. Furthermore, the the first ring element is arranged at least partly circumferentially the valve body at the first protrusion, wherein at a first axial end area of the first ring element the first ring element is in contact with the housing at the second axial end area and at the second axial end area the first ring element rests on the cylinder head. The first ring element has a plastic.

Abstract: A coupling arrangement for coupling a fuel injector to a fuel rail of a combustion engine, has a fuel injector cup having a central longitudinal axis and is coupled to the fuel rail at a first axial end area of the fuel injector cup, a housing of the fuel injector being arranged at the central longitudinal axis facing a second axial end area of the fuel injector cup, an O-ring seal being arranged between the housing and the fuel injector cup at an axially overlapping area of the fuel injector cup and the housing, a back-up ring being arranged at least partly circumferentially the housing such as to prevent the O-ring seal to be released from the housing, and a separating element being arranged at least partly circumferentially the housing between the O-ring seal and the back-up ring to prevent a contact of the O-ring seal with the back-up ring.

Abstract: A valve assembly (60) for an injection valve (62) has a valve body (4) including a central longitudinal axis (L), the valve body (4) has a cavity (8) with a fluid inlet portion (42) and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (6), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, and a fluid flow directing element (46) arranged in the fluid outlet portion (44) coaxially between the valve body (4) and the valve needle (10) and extending in radial direction away from the valve needle (10) in a way that a fluid flow between the valve needle (10) and the fluid flow directing element (46) is prevented.

Abstract: A valve assembly (80) of an injection valve (82) has a valve body (4) including a central longitudinal axis (L), the valve body (4) having a cavity (8) forming an inner surface (18) of the valve body (4), the cavity (8) having a fluid inlet portion (42), and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (8), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, the valve needle (10) and/or the inner surface (18) of the valve body (4) having a surface layer (48) with a tungsten carbide layer (70) and a carbon layer (72).

Abstract: Coupling device (60) for mechanically and hydraulically coupling a fuel injector (20) to a fuel rail (18) of a combustion engine (22), the fuel injector (20) having a central longitudinal axis (L) and an injection nozzle (31), having a fuel injector cup (32) being designed to be hydraulically coupled to the fuel rail (14) and to engage a fuel inlet portion (24) of the fuel injector (20), and a spring element (36) being part of the fuel injector (20) and being designed to be in a snap-in engagement with the fuel injector cup (32) to retain the fuel injector (20) in the fuel injector cup (32) in direction of the central longitudinal axis (L) facing towards the injection nozzle (31).

Abstract: An injection valve has an injector body with a recess and a valve body with a recess and a tip away from which a first axial section of the valve body is formed at an axial end area. The first axial section is arranged in the injector body recess having a slight clearance fit to a wall of the injector body recess. A needle body is partly and axially movable arranged in the injector body recess and protrudes into the valve body recess to prevent a fluid flow through the injection nozzle when closed and enables the fluid flow through the injection nozzle otherwise. A fitting body is formed and arranged between the first axial section of the valve body and the wall of the recess of the injector body such that the valve body and the fitting body are fixed to the injector body by a frictional connection.

Abstract: A valve assembly for an injection valve has a valve body including a central longitudinal axis and a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in further positions, and a fluid flow directing element arranged in the cavity and having a recess to direct the fluid flow to the fluid outlet portion, the recess having a recess fluid inlet portion and a channel portion arranged between the recess fluid inlet portion and the fluid outlet portion, the channel portion having an upstream end and a downstream end. The cross section of the downstream end of the channel portion being smaller than the cross section of the upstream end of the channel portion.

Abstract: A valve assembly (60) for an injection valve (62) has a valve body (4) including a central longitudinal axis (L), the valve body (4) has a cavity (8) with a fluid inlet portion (42) and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (6), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, and a fluid flow directing element (46) arranged in the fluid outlet portion (44) coaxially between the valve body (4) and the valve needle (10) and extending in radial direction away from the valve needle (10) in a way that a fluid flow between the valve needle (10) and the fluid flow directing element (46) is prevented.