Abstract: A fuel injector for fuel injection systems of internal combustion engines, in particular for direct injection of fuel into the combustion chamber of an engine, including an actuator, a valve needle which is mechanically linked to the actuator and is acted upon by a restoring spring in a closing direction, for actuation of a valve closing body, which together with a valve seat face forms a sealing seat, and including a sleeve which pre-stresses the restoring spring. An adjusting body is situated adjustably in the sleeve so that a fuel amount flowing through the fuel injector per unit of time is a function of the position of the adjusting body in the sleeve.

Abstract: A fuel injector for fuel injection systems of internal combustion engines, in particular for direct injection of fuel into the combustion chamber of an engine, including an actuator, a valve needle which is mechanically linked to the actuator and is acted upon by a restoring spring in a closing direction, for actuation of a valve closing body, which together with a valve seat face forms a sealing seat, and including a sleeve which pre-stresses the restoring spring. An adjusting body is situated adjustably in the sleeve so that a fuel amount flowing through the fuel injector per unit of time is a function of the position of the adjusting body in the sleeve.

Abstract: A fuel injector for fuel injection systems of internal combustion engines, in particular for direct injection of fuel into the combustion chamber of an engine, including an actuator, a valve needle which is mechanically linked to the actuator and is acted upon by a restoring spring in a closing direction, for actuation of a valve closing body, which together with a valve seat face forms a sealing seat, and including a sleeve which pre-stresses the restoring spring. An adjusting body is situated adjustably in the sleeve so that a fuel amount flowing through the fuel injector per unit of time is a function of the position of the adjusting body in the sleeve.

Abstract: A fuel injector, especially for the direct injection of fuel into a combustion chamber of an internal combustion engine has an actuator which is in operative connection with a valve needle, the valve needle having a valve-closure member at its spray-off end, which cooperates to form a sealing seat together with a valve seat surface which is formed on a valve seat element. Valve-closure member reaches through a swirl element which is positioned on a flow-supply side end face of valve seat element, swirl channels being formed in swirl element. The valve seat element has a ring-shaped elevation on the flow-supply side end face facing the swirl element.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines, e.g., for the direct injection of fuel into the combustion chamber of an internal combustion engine, includes an actuator, a valve needle which is in operative connection to the actuator and acted upon by a restoring spring in a closing direction, to actuate a valve-closure member which forms a sealing seat together with a valve-seat surface, and an adjustment sleeve, which provides the restoring spring with an initial stress. The adjustment sleeve has a cup-shaped design and an eccentric bore in a base, which is in variable alignment with an eccentric bore in a base of a cup-shaped inner sleeve able to be inserted into the adjustment sleeve.

Abstract: A fuel injector (1), especially for the direct injection of fuel into a combustion chamber of an internal combustion engine has an actuator (10) which is in operative connection with a valve needle (3), the valve needle (3) having a valve-closure member (4) at its spray-off end, which cooperates to form a sealing seat together with a valve seat surface (6) which is formed on a valve seat element (5). Valve-closure member (4) reaches through a swirl element (32) which is positioned on a flow-supply side end face (35) of valve seat element (5), swirl channels (33) being formed in swirl element (32). The valve seat element (5) has a ring-shaped elevation (36) on the flow-supply side end face (35) facing the swirl element (32).

Abstract: A fuel injector (1) for fuel-injection systems of internal combustion engines, especially for the direct injection of fuel into the combustion chamber of an internal combustion engine, comprising an actuator (10); a valve needle (3) which is in operative connection to the actuator (10) and acted upon by a restoring spring (23) in a closing direction, to actuate a valve-closure member (4) which forms a sealing seat together with a valve-seat surface (6); and an adjustment sleeve (24), which provides the restoring spring (23) with an initial stress. The adjustment sleeve (24) has a cup-shaped design and an eccentric bore (38) in a base (37), which is in variable alignment with an eccentric bore (36) in a base (35) of a likewise cup-shaped inner sleeve (34) able to be inserted into the adjustment sleeve (24).

Abstract: An adapter (1) is described for connecting an electrical plug-in connector (4) of a fuel injector to a counterplug (6), whose first end (3) is pluggable into a plug-in connector (4) of the fuel injector and whose second end (5) is pluggable into counterplug (6) of the electrical line. A first seal (7) being positioned between the first end (3) of the adapter (1) and the plug-in connector (4) of the fuel injector and a second seal (8) being positioned between the second end (5) of the adapter (1) and the counterplug (6).

Abstract: A fuel injector (1) for fuel injection systems of internal combustion engines, in particular for direct injection of fuel into the combustion chamber of an engine, includes an actuator (10), a valve needle (3) which is mechanically linked to the actuator (10) and is acted upon by a restoring spring (23) in a closing direction to actuate a valve closing body (4), which together with a valve seat face (6) forms a sealing seat, and it has a sleeve (24) which pre-stresses the restoring spring (23). The sleeve (24) is plastically deformable so that the cross section of a flow-through channel (46) of the sleeve (24) is variable by mechanical action.

Abstract: A fuel injector (1) for fuel injection systems of internal combustion engines, in particular for direct injection of fuel into the combustion chamber of an engine, having an actuator (10), a valve needle (3) which is mechanically linked to the actuator (10) and is acted upon by a restoring spring (23) in a closing direction, for actuation of a valve closing body (4), which together with a valve seat face (6) forms a sealing seat, and having a sleeve (24) which pre-stresses the restoring spring (23). An adjusting body (40) is situated adjustably in the sleeve (24) so that a fuel amount flowing through the fuel injector (1) per unit of time is a function of the position of the adjusting body (40) in the sleeve (24).