Abstract: A device for injecting fuel into the combustion chamber of an internal combustion engine with at least one injector includes an injector body equipped with a high-pressure accumulator, a nozzle needle axially displaceably guided in the injector and surrounded by a nozzle chamber, a high-pressure line connecting the high-pressure accumulator to the nozzle chamber, and a resonator line arranged in parallel with the high-pressure line and communicating with the nozzle chamber and opening into the high-pressure accumulator via a resonator throttle. The resonator line and the high-pressure line, at least in their sections adjacent the high-pressure accumulator, are formed in a retaining body which, on its end face, is screwed into the accumulator pipe forming the high-pressure accumulator.

Abstract: An apparatus for injecting fuel into the combustion chamber of an internal combustion engine includes an injection nozzle (5) having an axially displaceable nozzle needle (17) to which the pressure present in a control chamber (13) when filled with fuel, can be applied in the axial direction to control the opening and closing movements of the needle. The pressure in the control camber (13) is controlled via a solenoid valve (7) opening or closing at least one inlet or outlet duct for fuel. A magnetic coil (28) cooperates with an armature (27) and a valve-closing member is coupled to the armature (27) and that can be pressed against a valve seat (15). The armature (27) is disposed in an armature chamber (19) into which the inlet or outlet duct (14) opens. The magnetic coil (28) is covered by a metal protective plate (30) on the side of the armature chamber.

Abstract: A device for injecting fuel into the combustion chamber of an internal combustion engine with at least one injector includes an injector body equipped with a high-pressure accumulator, a nozzle needle axially displaceably guided in the injector and surrounded by a nozzle chamber, a high-pressure line connecting the high-pressure accumulator to the nozzle chamber, and a resonator line arranged in parallel with the high-pressure line and communicating with the nozzle chamber and opening into the high-pressure accumulator via a resonator throttle. The resonator line and the high-pressure line, at least in their sections adjacent the high-pressure accumulator, are formed in a retaining body which, on its end face, is screwed into the accumulator pipe forming the high-pressure accumulator.

Abstract: In an apparatus for injecting fuel into the combustion chamber of an internal combustion engine, including an injection nozzle (5) having an axially displaceable nozzle needle (17) to which the pressure present in a control chamber (13) filled with fuel can be applied in the axial direction to control the opening and closing movements of said needle, wherein the pressure in the control chamber (13) is controlled via a solenoid valve (7) opening or closing at least one inlet or outlet duct (14) for fuel and in which a magnetic coil (28) cooperates with an armature (27) and a valve-closing member that can be pressed against a valve seat (15) is coupled to the armature (27), said armature (27) being disposed in an armature chamber (19) into which the inlet or outlet duct (14) opens, the magnetic coil (28) is covered by a metal protective plate (30) on the side of the armature chamber.

Abstract: In connection for high-pressure medium conduits, in which a first conduit (1) includes a connection piece (3) inserted in the interior of a second conduit (2), wherein the connection piece (3) and the second conduit (2) carry cylindrical sealing surfaces (4, 5) cooperating with each other either directly or via an interposed seal (14), the connection piece (3), in the region of at least a portion of its sealing surface (4), is formed with a reduced wall thickness amounting to less than 50% of the wall thickness of the second conduit (2) in the region of its sealing surface (5).

Abstract: In a device for the injection of fuel into the combustion chamber of an internal combustion engine, including an injector nozzle (5) and a nozzle needle (7) which is guided in a longitudinally displaceable manner within the injector nozzle (5) and, for the control of its opening and closing movements, is capable of being pressurized in the axial direction by the pressure prevailing in a control chamber (12) filled with fuel, wherein the control chamber (12) communicates with a supply line (14) and a discharge line (19), and a magnetic control valve (16) is arranged in at least one of the two lines, said magnetic control valve comprising a valve-closing member (25) coupled with an actuating member (21) and pressable against a valve seat (26), and said actuating member (21) being separated from the closing member (25) and the valve seat (26) by a bellows seal (28), the valve-closing member is configured as a valve ball and pressable against a conical valve seat (26).

Abstract: Within an injection nozzle for the injection of fuels into the combustion chamber of an internal combustion machine the injection nozzle (5) comprising an axially displaceable valve needle (7), which plunges into a control chamber (12) chargeable with pressurized fuel whose pressure is controllable by a control valve (16) opening or closing the at lest one inlet or outlet channel for fuel, channels are arranged in the region of the valve needle (7), which channels are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively. Also in the region of the control valve (16) and/or a solenoid actuating the control valve, channels are arranged which are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively.

Abstract: Within an injection nozzle for the injection of fuels into the combustion chamber of an internal combustion machine the injection nozzle (5) comprising an axially displaceable valve needle (7), which plunges into a control chamber (12) chargeable with pressurized fuel whose pressure is controllable by a control valve (16) opening or closing the at lest one inlet or outlet channel for fuel, channels are arranged in the region of the valve needle (7), which channels are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively. Also in the region of the control valve (16) and/or a solenoid actuating the control valve, channels are arranged which are connected with lubricant- or motor-oil lines respectively and can be passed through by lubricant- or motor-oil respectively.

Abstract: In a control valve for an injection nozzle for injecting fuels into the combustion chamber of an internal combustion engine, including a nozzle needle (7) which is capable of being axially displaced in an injector nozzle (5) and reaches into a control chamber (12) feedable with a pressurized fuel whose pressure is controllable via the control valve (16), which opens or closes at least one inlet or outlet channel for fuel, the valve seat (19) of the valve (16) is arranged in a valve bush (23) separate from the valve body (3) and made of a wear-resistant material.

Abstract: The invention relates to a common rail injector having an injector housing (2), which communicates via a fuel inlet (3) with a central high-pressure reservoir, which is supplied with fuel from a fuel tank, which fuel, as a function of the position of a 3/2-way magnet valve (4), passes into a high-pressure bore (5) of an injection nozzle (6), and the 3/2-way magnet valve (4) has a control piston (14), which can be moved back and forth between a closed and an open valve position and which on one of its two ends is coupled with an armature (15) and whose other end projects into a pressureless chamber (9), and in the open valve position the fuel inlet (3) communicates with the high-pressure bore (5) of the injection nozzle (6), and in the closed valve position, the fuel inlet (3) is closed by the control piston (14) and the high-pressure bore (5) of the injection nozzle (6) communicates with a fuel outlet (12) and with the pressureless chamber (9).

Abstract: A fuel injection device for internal combustion engines, having a high-pressure collection chamber (common rail), which can be filled with fuel by a high-pressure pump and which communicates via injection lines with injection valves that protrude into the combustion chamber of the engine to be supplied, the opening and closing motions of the injection valves each being controlled by an electrically triggered control valve. The control valve is embodied as a 3/2-way valve which connects a high-pressure conduit, discharging at an injection port of the injection valve, with the injection line or a relief line. On the control valve member of the control valve, a hydraulic work chamber that can be filled with high fuel pressure is provided, which can be opened into a relief conduit in order to adjust the set position of the control valve member of the control valve.

Abstract: A fuel injection device for injection internal combustion engines comprising a main injection plunger and a preinjection plunger, which is arranged coaxially with the latter and separated from the latter, and has a smaller diameter. The preinjection plunger is driven non-positively by the main injection plunger to make stroke movements against the force of at least one spring, which holds the preinjection plunger to bear against the main injection plunger. During the main injection, the working chamber of the preinjection plunger is connected to the working chamber of the main injection plunger, so that the preinjection plunger adds an injection portion to the main injection amount after termination of the preinjection and the spray interval, and the fuel pressure occurring in the working chamber of the preinjection plunger supports the action of the spring.