Abstract: A method is described for operating at least one magnetic switching element, at least one first connection of at least one sensor device being connected to at least one connection of a coil of the magnetic switching element, and the first connection or an additional connection of the sensor device being connected to a reference potential, and a measuring state being established in which at least one connection of the coil is essentially at least temporarily decoupled from the reference potential and/or from a source activating the coil, and at least one signal of at least one sensor of the sensor device being ascertained in the measuring state from at least one electrical potential at at least one connection of the coil.

Abstract: In a method for operating a magnetic switching element, at least one connection of at least one sensor device is connected to at least one connection of a coil of the magnetic switching element, and at least one measuring state is established in which the at least one connection of the coil is largely at least temporarily decoupled from a ground, a voltage source, and/or a current source activating the coil, and at least one auxiliary voltage and/or at least one auxiliary current is/are applied to the at least one connection of the coil in the measuring state, and at least one sensor signal is ascertained from at least one electrical potential, at least one potential difference, and/or at least one current flowing at the connections of the coil.

Abstract: The invention relates to a control chamber, the pressure of which determines the strokes or positions of a nozzle needle, and which is assigned to a force or pressure sensor in order to detect the progression of the control chamber pressure. Because the control chamber pressure significantly changes during the closing of the nozzle needle, the operating phases of the injector can be exactly determined from the sensor data and supplied to an engine controller.

Abstract: A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the actuator is supplied a voltage and/or a current during an activation period. The control valve is set into a lifting motion by the actuator. The injector is opened and closed by the nozzle needle, using the lifting motion of the control valve. A further time period is ascertained. The further time period ends at the closing time of the nozzle needle. A function is ascertained, which links the activation period to the further time period. A shortest activation period, for which the nozzle needle opens and produces an injection, is ascertained with the aid of the function. An opening delay period (do1) of the nozzle needle is ascertained as a function of the shortest time period.

Abstract: A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the actuator is supplied a voltage and/or a current during an activation period. The control valve is set into a lifting motion by the actuator. The injector is opened and closed by the nozzle needle, using the lifting motion of the control valve. A further time period is ascertained. The further time period ends at the closing time of the nozzle needle. A function is ascertained, which links the activation period to the further time period. A shortest activation period, for which the nozzle needle opens and produces an injection, is ascertained with the aid of the function. An opening delay period (do1) of the nozzle needle is ascertained as a function of the shortest time period.

Abstract: In a method for operating a magnetic switching element, at least one connection of at least one sensor device is connected to at least one connection of a coil of the magnetic switching element, and at least one measuring state is established in which the at least one connection of the coil is largely at least temporarily decoupled from a ground, a voltage source, and/or a current source activating the coil, and at least one auxiliary voltage and/or at least one auxiliary current is/are applied to the at least one connection of the coil in the measuring state, and at least one sensor signal is ascertained from at least one electrical potential, at least one potential difference, and/or at least one current flowing at the connections of the coil.

Abstract: A method is described for operating at least one magnetic switching element, at least one first connection of at least one sensor device being connected to at least one connection of a coil of the magnetic switching element, and the first connection or an additional connection of the sensor device being connected to a reference potential, and a measuring state being established in which at least one connection of the coil is essentially at least temporarily decoupled from the reference potential and/or from a source activating the coil, and at least one signal of at least one sensor of the sensor device being ascertained in the measuring state from at least one electrical potential at at least one connection of the coil.

Abstract: The invention relates to a control chamber (7), the pressure of which determines the strokes or positions of a nozzle needle (6), and which is assigned to a force or pressure sensor (20) in order to detect the progression of the control chamber pressure. Because the control chamber pressure significantly changes during the closing of the nozzle needle (6), the operating phases of the injector can be exactly determined from the sensor data and supplied to an engine controller.

Abstract: A fuel injection valve for internal combustion engines has a valve housing composed of a first housing part and a second housing part which are connected to one another in a connecting region. In order to improve the strength of the connection in relation to the pressure of the fuel which prevails in an inner space, the housing wall of the first housing part is supported in the connecting region on the housing wall of the second housing part, and the housing wall of the second housing part is of reinforced design in the connecting region.

Abstract: A fuel injection valve for internal combustion engines has a valve housing composed of a first housing part and a second housing part which are connected to one another in a connecting region. In order to improve the strength of the connection in relation to the pressure of the fuel which prevails in an inner space, the housing wall of the first housing part is supported in the connecting region on the housing wall of the second housing part, and the housing wall of the second housing part is of reinforced design in the connecting region.

Abstract: The invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, having an injector housing, which communicates with a central high-pressure reservoir and in which a nozzle needle is axially displaceable in order to adjust the injection as a function of the pressure in a control chamber, and having a sealing element, which is disposed in an annular chamber that is provided between a valve element and the injector housing. In addition to the sealing element, a support device is disposed in the annular chamber between the valve element and the injector housing.

Abstract: A high-pressure fuel system including a housing having first and second high-pressure bodies (3, 5), which contact one another at a contact face. A high-pressure chamber in the housing passes through the contact face, and at least intermittently a high fuel pressure is present in the chamber (23). A wall part having a longitudinal axis surrounds the housing at least in the region of the contact face, so that a leak fuel chamber (32) is formed between the wall part and the housing which chamber is sealed off from the outside.

Abstract: A fluid control valve having a holder body that has a receptacle containing a piezoelectric actuator unit and a hydraulic coupler module that has at least one positioning piston and at least one actuating piston that is operatively connected to the positioning piston via a hydraulic coupler and actuates a valve-closure member that cooperates with at least one valve seat and in the closed position, prevents a flow of fluid from a valve chamber to a return conduit. The positioning piston is guided in the receptacle by means of a seal.

Abstract: An injector for injecting fuel into the combustion chamber of an internal combustion engine includes an injector housing, in which a pressure chamber surrounds an insert part. The pressure chamber can be filled with fuel at high pressure via a high-pressure inlet. Via the pressure chamber, a control chamber defined by the insert part and a valve component is subjected to pressure. The valve component is movable inside the insert part, thus executing a stroke motion. A one-piece, metal sealing element is received by a nonpositive connection on the circumference of the insert part is subjected to the high pressure prevailing in the pressure chamber.

Abstract: The invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, having an injector housing which communicates with a central high-pressure reservoir and in which a nozzle needle that cooperates with a valve piston which is guided in a valve piece is axially displaceable. To increase the service life of the injector, the end toward the nozzle needle of the valve piston or of a thrust rod triggered by the valve piston is guided coaxially to the axis of symmetry of the nozzle needle.

Abstract: A high-pressure fuel system, having a housing (1) that includes a first high-pressure body (3) and a second high-pressure body (5), which contact one another at a contact face (30). A high-pressure chamber (23) embodied in the housing (1) passes through the contact face (30), and at least intermittently a high fuel pressure is present in it. A wall part (7), which has a longitudinal axis (15), surrounds the housing (1) at least in the region of the contact face (30), so that between the wall part (7) and the housing (1), a leak fuel chamber (32) is formed, which is sealed off from the outside.

Abstract: An injector for injecting fuel into the combustion chamber of an internal combustion engine includes an injector housing, in which a pressure chamber surrounds an insert part. The pressure chamber can be filled with fuel at high pressure via a high-pressure inlet. Via the pressure chamber, a control chamber defined by the insert part and a valve component is subjected to pressure. The valve component is movable inside the insert part, thus executing a stroke motion. A one-piece, metal sealing element is received by a nonpositive connection on the circumference of the insert part is subjected to the high pressure prevailing in the pressure chamber.

Abstract: A device for fastening a fuel injector in the cylinder head of an internal combustion engine includes a fuel injector having the diameter d0, a fastening screw screwed into the cylinder head, and a forklike clamping pad, penetrated by this fastening screw, with two tines of length l2 and spacing d2. The shaft of the fuel injector narrows in the direction of the injection nozzle to a diameter d1, and the narrowed shaft is provided at one point with opposed extensions; the width l1 at this point does not exceed the original diameter d0 of the fuel injector.

Abstract: A solenoid valve for controlling a fuel injector of an internal combustion engine, including an electromagnet 29, a displaceable armature having an armature plate 28 and an armature pin 27, and a control valve element 25 which is displaced with the armature and which cooperates with a valve seat 24 for opening and closing a fuel discharge channel 17 of a control pressure chamber 14 of the fuel injector 1. The armature plate 28 is mounted on the armature pin 27 so as to be slidably displaceable in opposition to the tensioning force of a restoring spring 35 acting on the armature plate 28 under the influence of the inert mass of the armature plate in the closing direction of the control valve element 25, and is pressed by the restoring spring 35 in its rest state against a stop part 26 attached to the armature pin 27. The stop part 26 is designed to encircle the periphery of the armature pin 27 by more than 180° in a plane perpendicular to the direction of movement of the armature pin.

Abstract: The invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, having an injector housing (1), which communicates with a central high-pressure reservoir and in which a nozzle needle is axially displaceable in order to adjust the injection as a function of the pressure in a control chamber, and having a sealing element (6), which is disposed in an annular chamber (3) that is provided between a valve element (2) and the injector housing (1).