Abstract: An assembly at least comprising a fuel injector for dual fuel operation of an internal combustion engine. The assembly includes a nozzle holder defining a fuel circuit and provided with a nose adapted in use to be in connection with a combustion space of an internal combustion engine, and first and second nozzles in communication with the fuel circuit in the nozzle holder for directly injecting liquid fuel into the combustion space of the internal combustion engine for ignition of a combustible mixture present in the combustion space. The first and second nozzles adjacent to the nose of the nozzle holder are interconnected by a cooling channel. At each actuation of a fuel pump upstream of the first and second nozzles, substantially a full volume of fuel pumped during actuation of the fuel pump is allowed to flow through the cooling channel and via the first and second nozzles.

Abstract: An assembly at least comprising a fuel injector for dual fuel operation of an internal combustion engine. The assembly includes a nozzle holder defining a fuel circuit and provided with a nose adapted in use to be in connection with a combustion space of an internal combustion engine, and first and second nozzles in communication with the fuel circuit in the nozzle holder for directly injecting liquid fuel into the combustion space of the internal combustion engine for ignition of a combustible mixture present in the combustion space. The first and second nozzles adjacent to the nose of the nozzle holder are interconnected by a cooling channel. At each actuation of a fuel pump upstream of the first and second nozzles, substantially a full volume of fuel pumped during actuation of the fuel pump is allowed to flow through the cooling channel and via the first and second nozzles.

Abstract: In a method for injecting fuel into the combustion chamber of an internal combustion engine, the fuel is fed by at least one prefeed pump from a tank to at least one high-pressure pump and the high-pressure fuel fed by the high-pressure pump is supplied to the injector, wherein the injector has an injection nozzle with an axially movable nozzle needle protruding into a control chamber which can be fed with fuel under pressure and whose pressure is controlled by a control valve which opens or closes at least one inflow or outflow duct for fuel. Between the prefeed pump and the high-pressure pump, a partial volume of the fuel is branched off as a flushing volume and supplied to a flushing channel of the injector, wherein the flushing volume is directly supplied to the control valve such that the flushing volume flows at least partially through the control valve and preferably mixes with the fuel from the inflow or outflow duct, respectively.

Abstract: In a method and device for preheating an internal combustion engine injector (1) including at least one valve (3) to be activated by an electromagnet (21), in which the coil of the electromagnet (21) is energized before the engine is started, the coil of the electromagnet (21) is periodically powered with a preheating voltage (42), and the current characteristic (33) within the coil is monitored and subjected to an evaluation to detect local current minima (43) and/or maxima (44) caused by armature reactions.

Abstract: In a method for injecting fuel into the combustion chamber of an internal combustion engine, the fuel is fed by at least one prefeed pump from a tank to at least one high-pressure pump and the high-pressure fuel fed by the high-pressure pump is supplied to the injector, wherein the injector has an injection nozzle with an axially movable nozzle needle protruding into a control chamber which can be fed with fuel under pressure and whose pressure is controlled by a control valve which opens or closes at least one inflow or outflow duct for fuel. Between the prefeed pump and the high-pressure pump, a partial volume of the fuel is branched off as a flushing volume and supplied to a flushing channel of the injector, wherein the flushing volume is directly supplied to the control valve such that the flushing volume flows at least partially through the control valve and preferably mixes with the fuel from the inflow or outflow duct, respectively.

Abstract: In a device for the injection of fuel into the combustion chamber of an internal combustion engine, including at least one high-pressure accumulator (1), an injector (4), at least one high-pressure line (7) connecting the high-pressure accumulator (1) with the injector (4), and a resonator line (16) arranged in parallel with the high-pressure line (7) between the injector (4) and the high-pressure accumulator (1) and including a resonator throttle (17) on the side of the high-pressure accumulator, the resonator line (16) is formed by an insert piece (18) pressed into the bore of the high-pressure line and is, in particular, formed within the same.

Abstract: In a device for the injection of fuel into the combustion chamber of an internal combustion engine, including at least one high-pressure accumulator (1), an injector (4), at least one high-pressure line (7) connecting the high-pressure accumulator (1) with the injector (4), and a resonator line (16) arranged in parallel with the high-pressure line (7) between the injector (4) and the high-pressure accumulator (1) and including a resonator throttle (17) on the side of the high-pressure accumulator, the resonator line (16) is formed by an insert piece (18) pressed into the bore of the high-pressure line and is, in particular, formed within the same.

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: In a method and device for preheating an internal combustion engine injector (1) including at least one valve (3) to be activated by an electromagnet (21), in which the coil of the electromagnet (21) is energized before the engine is started, the coil of the electromagnet (21) is periodically powered with a preheating voltage (42), and the current characteristic (33) within the coil is monitored and subjected to an evaluation to detect local current minima (43) and/or maxima (44) caused by armature reactions.

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) guided in a longitudinally displaceable manner within the injector nozzle (5), which nozzle needle (7) is at least partially surrounded by a nozzle prechamber (8) and, for the control of its opening and closing movements, capable of being pressurized in the axial direction by the pressure prevailing in a control chamber (12) filled with fuel, a supply line runs into the control chamber (12) and a discharge line (19) in which a magnetic control valve (16) is arranged leads away from the control chamber (12). The supply line to the control chamber (12) is guided through at least one bore (14) of the nozzle needle (7), which communicates with the nozzle prechamber (8) via a supply throttle (15).

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: Fuel is conveyed by at least one high-pressure pump from a low-pressure region into a high-pressure region including a pressure-accumulator line consisting of at least two separate accumulator units connected to one another by means of feed lines, and to fuel injectors for the cylinders. The accumulator units each have an accumulator volume for serving at least two cylinders, and accumulator covers provided on both end faces. All the functional units are integrated into these accumulator covers in terms of fuel delivery and transfer, and at least one separate pump accumulator is arranged in the high-pressure region between the high-pressure pump and the assembled pressure-accumulator line. The pump accumulator is connected to at least one accumulator cover of an accumulator unit of the pressure-accumulator line for fuel conveyance and is capable of being acted upon by at least one high-pressure pump.

Abstract: Fuel is conveyed by at least one high-pressure pump from a low-pressure region into a high-pressure region including a pressure-accumulator line consisting of at least two separate accumulator units connected to one another by means of feed lines, and to fuel injectors for the cylinders. The accumulator units each have an accumulator volume for serving at least two cylinders, and accumulator covers provided on both end faces. All the functional units are integrated into these accumulator covers in terms of fuel delivery and transfer, and at least one separate pump accumulator is arranged in the high-pressure region between the high-pressure pump and the assembled pressure-accumulator line. The pump accumulator is connected to at least one accumulator cover of an accumulator unit of the pressure-accumulator line for fuel conveyance and is capable of being acted upon by at least one high-pressure pump.

Abstract: Inverted current rectifier with self commutation for smaller and medium output and three-stage commutation in which the disconnection of thyristors of the inverted rectifier and the current commutation in the phases are separated and the accumulated power of capacitors of the inverted rectifier is, without losses, discharged to the current source and thus to the load of the inverted rectifier.

Abstract: Circuit arrangement for inverters with three stage self-commutation suitable for large outputs and for parallel connection of main thyristors and separating reactors.

Abstract: A test circuit for determining when one of a number of source voltages deviates from its set point. Each source voltage has coordinated comparison circuit which compares the voltage with a preset value, and which has a limited range of output voltage. Each comparison circuit has its output connected to a switching circuit. The output of each switching circuit is connected to a short circuit coil of one coupling transformer. The coupling transformer is fed from an auxiliary current source through an auxiliary coil and has as output a pick-up coil connected to an evaluation device.