EP0982492B1 - Apparatus for injecting fuel in a reciprocating internal combustion engine - Google Patents
Apparatus for injecting fuel in a reciprocating internal combustion engine Download PDFInfo
- Publication number
- EP0982492B1 EP0982492B1 EP99810617A EP99810617A EP0982492B1 EP 0982492 B1 EP0982492 B1 EP 0982492B1 EP 99810617 A EP99810617 A EP 99810617A EP 99810617 A EP99810617 A EP 99810617A EP 0982492 B1 EP0982492 B1 EP 0982492B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- piston
- injection
- control
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 39
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 238000002347 injection Methods 0.000 claims description 39
- 239000007924 injection Substances 0.000 claims description 39
- 239000003921 oil Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims 1
- 208000003028 Stuttering Diseases 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/32—Varying fuel delivery in quantity or timing fuel delivery being controlled by means of fuel-displaced auxiliary pistons, which effect injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure
Definitions
- the invention relates to a device for injecting fuel for a reciprocating internal combustion engine according to the preamble of claim 1 and a reciprocating internal combustion engine with such a device.
- a metering piston is fed by a fuel pump with fuel under injection pressure up to 2 000 bar.
- a control piston is arranged downstream of the metering piston and has guide elements for the fuel.
- the control piston is moved by a hydraulic system between two end positions, which is controlled electrically.
- the metering piston is driven by fuel from the fuel pump.
- the fuel is supplied via the guide elements from a fuel pump to the metering chamber or from the metering chamber of the injection nozzle of a cylinder of a reciprocating internal combustion engine.
- JP 60 162 021 describes an injection device according to the preamble of claim 1.
- the invention has for its object to provide a device for injecting fuel for a reciprocating internal combustion engine, wherein the fuel is supplied to the metering piston under a lower pressure than the injection pressure.
- the use of the pressure intensifier simplifies the supply of fuel and consequently eliminates the accumulator for the fuel under high pressure up to 2,000 bar and the high-pressure pumps.
- control valves the control of the injectors in register and stutter injection and / or switching off one or more injectors of an engine cylinder is made possible. If all injectors of an engine cylinder fail, the engine can be run with the remaining cylinders at partial load.
- the injection volume can be kept constant. In case of failure of the distance measurement, the injection is timed. If an ignition pressure measuring device is used, the ignition pressure can be regulated to the permissible value with the injection device, so that the most favorable fuel consumption is always achieved.
- the injection device includes a pressure booster 1 and a spool 2, which are displaceable between two end positions and a control valve 3 and a hydraulic-electrical device 4.
- the pressure booster 1 is designed as a stepped piston having two pistons 7, 8 with different diameters.
- the pistons 7, 8 are each arranged displaceably in a chamber 9, 10, wherein the chamber 9 for the larger piston 7 via a channel 11 communicates with the spool 2 and wherein the chamber 10 for the smaller piston 8 via a channel 12th communicates with the control valve 3 and via a channel 13 with an arrangement 14 for supplying fuel, for example diesel fuel or heavy oil.
- an elastic means 15 is arranged, which holds the pressure booster 1 in an end position.
- the connecting channel 11 is closed to the control slide 2 and the connecting channels 12 and 13 open to the control valve 3 and to the arrangement 14 for supplying fuel.
- the spool 2 is arranged in a cylindrical chamber 21, the supply channel 22, the consumer channel 11, which leads to the pressure booster 1 and a discharge channel 24 and at the end faces a channel 25 for pressure medium and a channel 26 for the leakage.
- a spring 27 is arranged, which holds the spool 2 in an end position, the channel 25 is completed.
- the spool 2 is cylindrical and has two control edges 32, 32 to control the flow of a medium.
- the control valve 3 has an open / close function and has a valve body 41 with a seat, a feed channel 42 for fuel, a return channel 43 and a consumer channel 44, a valve spool 45 with a poppet 46 and a known actuator 47 for the valve spool.
- the hydraulic-electric device 4 comprises a plurality of hydraulic pumps 51 (only one shown), an accumulator 52, pilot valves 53, 54 for the spool 2 and the control valve 3, an angle sensor 55, which indicates both the angle of rotation and the crankshaft position, means 56 for Sensing the position of the pressure booster and an electronic control unit 57 which is connected to the pilot valves 53, 54, the angle sensor 55 and the device 56 signal transmitting.
- the device 56 is advantageously designed as an inductive measuring system.
- an adaptive component injection volume control may be provided.
- a speed dependent adaptive start of injection control is provided. The monitoring and control of the actual values of the position and speed is carried out by comparison with the setpoint values of the position and the speed of the metering piston.
- conduit 61 branch off the accumulator 52, which are respectively provided for a cylinder of a reciprocating internal combustion engine, wherein the cylinder may have one or more injection nozzles.
- the conduit 61 is connected to the supply passage 22 of the spool 2 and the pilot valves 53, 54.
- a conduit 62 is provided for each outlet valve (not shown).
- the pressure booster 1 communicates with the control valve 3.
- a plurality of control valves 3 may be connected to the pressure booster 1.
- the pressure booster fulfills two tasks, one Dosing and a pressure increase of the fuel for each injection process.
- the metering of the fuel takes place by means of the device 56, which continuously determines the path of the displacement and applies it as signals to the control electronics 57. From the cross-sectional area of the smaller piston 8 of the pressure booster 1 and from the distance traveled, the displaced volume is determined, thereby realizing a volumetric injection.
- the Dosierkolbenwegwalller indirectly also broken injector heads can be determined, because in such a case, the Dosierkolben beaut, the Dosierkolben 1987 is greater than usual during the injection process.
- This signal will cause the control electronics to suppress fuel injection into a defective injector cylinder and, if necessary, reduce the overall engine load and / or indicate the fault with a display device.
- the hydraulic pumps promote control oil to a pressure of about 100 to 300 bar in the accumulator 52. The energy contained in this oil is used to actuate the device in question here.
- the figure shows the device in the pre-injection condition, in which the assembly 14 has supplied fuel to the pressure booster 1, which is under a pressure of about 10 bar and can use the injection, which proceeds as follows.
- the pilot valve 53 is controlled for the spool 2 from the control electronics 57 and the spool moved relatively slowly in the working position.
- the control oil flows into the larger chamber 9 of the pressure booster 1 and displaces the stepped piston, so that the fuel present in the smaller chamber 10 is displaced.
- the small chamber 10 is closed on the one hand by a check valve in the assembly 14 and on the other hand by the closed control valve 3, a pressure is built up which corresponds to the area ratio of the stepped piston.
- the valve spool 45 is actuated and the control valve 3 is opened, so that the fuel flows to the injection nozzle. To prevent the injection at low pressure, the injection process is completed quickly.
- the spool 2 After completion of the injection process, the spool 2 is returned to the rest position, so that the control oil from the larger chamber 9 of the booster 1 can flow off via the channels 11 and 24. This provision is supported by the means 15 and the newly flowing into the smaller chamber 10 of the booster 1 fuel.
- the apparatus includes a metering piston, which is formed as a pressure booster (1) with a stepped piston to set a fuel quantity and bring to injection pressure and at least one control valve (3) to supply one or more injectors (5) with fuel.
- the pressure booster (1) and the control valve are actuated by an electrically controlled, hydraulic system, which is acted upon by a pump with working oil at a pressure substantially lower than the injection pressure. By the control valves (3) an individual injection is possible.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Einspritzen von Brennstoff für eine Hubkolbenbrennkraftmaschine nach dem Oberbegriff des Anspruches 1 und eine Hubkolbenbrennkraftmaschine mit einer derartigen Vorrichtung.The invention relates to a device for injecting fuel for a reciprocating internal combustion engine according to the preamble of claim 1 and a reciprocating internal combustion engine with such a device.
In der
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Einspritzen von Brennstoff für eine Hubkolbenbrennkraftmaschine zu schaffen, bei welcher der Brennstoff dem Dosierkolben unter niedrigerem Druck als dem Einspritzdruck zugeführt wird.The invention has for its object to provide a device for injecting fuel for a reciprocating internal combustion engine, wherein the fuel is supplied to the metering piston under a lower pressure than the injection pressure.
Die Aufgabe wird erfindungsgemäss durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.
Durch die Anwendung des Druckverstärkers wird die Zufuhr von Brennstoff vereinfacht und daraus folgend entfallen der Akkumulator für den unter Hochdruck bis zu 2 000 bar stehenden Brennstoff und die Hochdruckpumpen.The use of the pressure intensifier simplifies the supply of fuel and consequently eliminates the accumulator for the fuel under high pressure up to 2,000 bar and the high-pressure pumps.
Dadurch wird in vorteilhafter Weise das Risiko der Undichtigkeit weitgehend ausgeschlossen und die Betriebssicherheit erhöht. Durch die Anordnung von Steuerventilen wird die Ansteuerung der Einspritzdüsen bei Register- und Stottereinspritzung und/oder Abschalten eines oder mehrerer Einspritzventile eines Motorzylinders ermöglicht. Beim Ausfallen sämtlicher Einspritzdüsen eines Motorzylinders kann die Maschine mit den restlichen Zylindern mit Teillast gefahren werden.As a result, the risk of leakage is largely excluded in an advantageous manner and increases the reliability. The arrangement of control valves, the control of the injectors in register and stutter injection and / or switching off one or more injectors of an engine cylinder is made possible. If all injectors of an engine cylinder fail, the engine can be run with the remaining cylinders at partial load.
Bei teilweise verstopften oder ausgewaschenen Einspritzdüsen kann das Einspritzvolumen konstant gehalten werden. Bei Ausfall der Wegmessung erfolgt die Einspritzung zeitgesteuert. Wird eine Zünddruckmessvorrichtung angewendet, so kann mit der Einspritzvorrichtung der Zünddruck auf den zulässigen Wert geregelt werden, so dass stets der günstigste Brennstoffverbrauch erreicht wird.In partially clogged or washed out injection nozzles, the injection volume can be kept constant. In case of failure of the distance measurement, the injection is timed. If an ignition pressure measuring device is used, the ignition pressure can be regulated to the permissible value with the injection device, so that the most favorable fuel consumption is always achieved.
Nachfolgend wird die Erfindung anhand der beiliegenden Zeichnung erläutert, die eine Ausführung einer erfindungsgemässen Vorrichtung und eine Einspritzdüse in schematischer Darstellung zeigt.The invention will be explained with reference to the accompanying drawing, which shows an embodiment of an inventive device and an injection nozzle in a schematic representation.
Die Einspritzvorrichtung enthält einen Druckverstärker 1 und einen Steuerschieber 2, die zwischen zwei Endstellungen verschiebbar sind sowie ein Steuerventil 3 und eine hydraulisch-elektrische Einrichtung 4. Der Druckverstärker 1 ist als Stufenkolben ausgebildet, der zwei Kolben 7, 8 mit unterschiedlichen Durchmesser aufweist. Die Kolben 7, 8 sind jeweils in einer Kammer 9, 10 verschiebbar angeordnet, wobei die Kammer 9 für den grösseren Kolben 7 über einen Kanal 11 mit dem Steuerschieber 2 in Verbindung steht und wobei die Kammer 10 für den kleineren Kolben 8 über einen Kanal 12 mit dem Steuerventil 3 und über einen Kanal 13 mit einer Anordnung 14 zum Zuführen von Brennstoff, z.B. Dieselkraftstoff oder Schweröl in Verbindung steht. In der Kammer 9 ist ein elastisches Mittel 15 angeordnet, welche den Druckverstärker 1 in einer Endstellung hält. In dieser Endstellung ist der Verbindungskanal 11 zum Steuerschieber 2 abgeschlossen und die Verbindungskanäle 12 bzw. 13 zum Steuerventil 3 bzw. zur Anordnung 14 zum Zuführen von Brennstoff offen. Der Steuerschieber 2 ist in einer zylindrischen Kammer 21 angeordnet, die einen Zuführkanal 22, den Verbraucherkanal 11, der zum Druckverstärker 1 führt und einen Ablasskanal 24 sowie an den Stirnseiten einen Kanal 25 für Druckmedium und einen Kanal 26 für die Leckage hat. In der Kammer ist eine Feder 27 angeordnet, welche den Steuerschieber 2 in eine Endstellung hält, wobei der Kanal 25 abgeschlossen ist. Der Steuerschieber 2 ist zylinderförmig und weist zwei Steuerkanten 32, 32 auf, um den Durchfluss eines Mediums zu steuern. Das Steuerventil 3 hat ein Auf/Zu-Funktion und weist einen Ventilkörper 41 mit einem Sitz, einen Zuführkanal 42 für Brennstoff, einen Rückführkanal 43 und einen Verbraucherkanal 44, einen Ventilschieber 45 mit einem Ventilkegel 46 und einen bekannten Antrieb 47 für den Ventilschieber auf. Die hydraulisch-elektrische Einrichtung 4 umfasst mehrere Hydraulikpumpen 51 (nur eine dargestellt), einen Akkumulator 52, Vorsteuerventile 53, 54 für den Steuerschieber 2 und das Steuerventil 3, einen Winkelgeber 55, der sowohl den Drehwinkel als die Kurbelwellenstellung angibt, eine Einrichtung 56 zum Abtasten der Stellung des Druckverstärkers und eine Regelelektronik 57, die mit den Vorsteuerventilen 53, 54, dem Winkelgeber 55 und der Einrichtung 56 signalübertragend verbunden ist. Die Einrichtung 56 ist mit Vorteil als induktives Messystem ausgebildet. Es ist auch möglich, andere Messysteme, z.B. kapazitive, optische, magnetische oder dgl. anzuwenden. Um die Totzeit zu kompensieren, kann eine Einspritzvolumen-Regelung mit adaptiver Komponente vorgesehen werden. Ferner ist eine Drehzahl abhängig adaptive Einspritzbeginn-Regelung vorgesehen. Die Ueberwachung und Kontrolle der lst-Werte der Stellung und Geschwindigkeit erfolgt durch Vergleiche mit den Soll-Werten der Stellung und der Geschwindigkeit des Dosierkolbens.The injection device includes a pressure booster 1 and a
Wie die Figur zeigt, zweigen mehrere Leitungen 61 vom Akkumulator 52 ab, die jeweils für einen Zylinder einer Hubkolbenbrennkraftmaschine vorgesehen sind, wobei der Zylinder eine oder mehrere Einspritzdüsen aufweisen kann. Die Leitung 61 ist mit dem Zuführkanal 22 des Steuerschiebers 2 und den Vorsteuerventilen 53, 54 verbunden. Für jedes Auslassventil (nicht dargestellt) ist eine Leitung 62 vorgesehen. Wie bereits erwähnt, steht Druckverstärker 1 mit dem Steuerventil 3 in Verbindung.As the figure shows,
Wie die Figur zeigt, können mehrere Steuerventile 3 mit dem Druckverstärker 1 verbunden sein. Der Druckverstärker erfüllt zwei Aufgaben und zwar eine Dosierung und eine Druckerhöhung des Brennstoffes für jeden Einspritzvorgang. Die Dosierung des Brennstoffes erfolgt mittels der Einrichtung 56, die fortlaufend den Weg der Verschiebung feststellt und als Signale an die Steuerelektronik 57 anlegt. Aus der Querschnittfläche des kleineren Kolbens 8 des Druckverstärkers 1 und aus dem zurückgelegten Weg wird das verdrängte Volumen bestimmt und dadurch eine volumetrische Einspritzung realisiert. Im weiteren können mit dem Dosierkolbenwegfühler indirekt z.B. auch gebrochene Einspritzdüsenköpfe festgestellt werden, weil in einem solchen Falle die Dosierkolbengeschwindigkeit beim Einspritzvorgang grösser als gewöhnlich wird. Mit diesem Signal wird die Steuerelektronik veranlasst werden, die Brennstoffeinspritzung in einen Zylinder mit schadhafter Einspritzdüse zu unterdrücken und gegebenenfalls die gesamte Motorlast zu reduzieren und/oder den Fehler mit einer Anzeigevorrichtung anzuzeigen. Die Hydraulikpumpen fördern Steueröl auf einen Druck von ca. 100 bis 300 bar in den Akkumulator 52. Die in diesem Oel enthaltene Energie wird zur Betätigung der hier in Rede stehenden Vorrichtung verwendet.As the figure shows, a plurality of control valves 3 may be connected to the pressure booster 1. The pressure booster fulfills two tasks, one Dosing and a pressure increase of the fuel for each injection process. The metering of the fuel takes place by means of the
Die Figur zeigt die Vorrichtung in dem Zustand vor einer Einspritzung, bei welchem die Anordnung 14 den Druckverstärker 1 mit Brennstoff versorgt hat, der unter einem Druck von ca. 10 bar steht und die Einspritzung einsetzen kann, die wie folgt abläuft. Kurz vor dem Einsetzen der Einspritzung wird das Vorsteuerventil 53 für den Steuerschieber 2 aus der Regelelektronik 57 angesteuert und der Steuerschieber relativ langsam in die Arbeitsstellung verschoben. Das Steueröl strömt in die grössere Kammer 9 des Druckverstärkers 1 und verschiebt den Stufenkolben, so dass der in der kleineren Kammer 10 vorhandene Brennstoff verdrängt wird. Weil die kleine Kammer 10 einerseits durch ein Rückschlagventil in der Anordnung 14 und andererseits durch das geschlossene Steuerventil 3 abgeschlossen ist, wird ein Druck aufgebaut, der dem Flächenverhältnis des Stufenkolbens entspricht. Während diesem Druckaufbau oder auch später wird der Ventilschieber 45 betätigt und das Steuerventil 3 geöffnet, so dass der Brennstoff zu der Einspritzdüse strömt. Um das Einspritzen bei niedrigen Druck zu verhindern, wird der Einspritzvorgang schnell beendet.The figure shows the device in the pre-injection condition, in which the
Nach Abschluss des Einspritzvorganges wird der Steuerschieber 2 in die Ruhestellung zurückgestellt, so dass das Steueröl aus der grösseren Kammer 9 des Druckverstärkers 1 ab über die Kanäle 11 und 24 abfliessen kann. Diese Rückstellung wird dabei von dem Mittel 15 und dem neu in die kleinere Kammer 10 des Druckverstärkers 1 strömenden Brennstoffes unterstützt.After completion of the injection process, the
Die Vorrichtung enthält einen Dosierkolben, der als Druckverstärker (1) mit einem Stufenkolben ausgebildet ist, um eine Brennstoffmenge festzulegen und auf Einspritzdruck zu bringen und mindestens ein Steuerventil (3), um eine oder mehrere Einspritzdüsen (5) mit Brennstoff zu versorgen. Der Druckverstärker (1) und das Steuerventil werden von einem elektrisch geregelten, hydraulischen System betätigt, das von einer Pumpe mit Arbeitsöl unter einem wesentlich geringeren Druck als dem Einspritzdruck beaufschlagt wird. Durch die Steuerventile (3) wird eine individuelle Einspritzung ermöglicht.The apparatus includes a metering piston, which is formed as a pressure booster (1) with a stepped piston to set a fuel quantity and bring to injection pressure and at least one control valve (3) to supply one or more injectors (5) with fuel. The pressure booster (1) and the control valve are actuated by an electrically controlled, hydraulic system, which is acted upon by a pump with working oil at a pressure substantially lower than the injection pressure. By the control valves (3) an individual injection is possible.
Claims (8)
- An apparatus for the injection of fuel having an arrangement (14) for the supplying of the fuel, a metering piston (1) for the metering of the amount of fuel to be injected, a control means (2) for the control of the metering piston (1), a control member (3) for the supplying of the amount of fuel to a fuel nozzle (5) and provided downstream of the metering piston (1) and a hydraulic-electric device (4) for the control of the injection, wherein the metering piston is designed as a pressure amplifier (1) in order to raise the fuel pressure to the injection pressure, wherein the arrangement (14) for the supply of fuel to a working chamber (10) of the metering piston is designed to supply the fuel at a lower pressure than the injection pressure and the control member (3) is designed as a control valve (3), with the control means (2) for the metering piston (1) and the control valve (3) for the controlling of the fuel quantity to the fuel nozzle (5) standing in communication with the hydraulic-electric device (4) in order to control the injection process, characterised by a sensing device (56) for monitoring the actual position of the piston (7, 8) of the pressure amplifier (1) and for comparing the actual position of the piston (7, 8) of the pressure amplifier (1) with a desired position in order to determine the injection amount and/or to monitor the actual speed of the piston (7, 8) of the pressure amplifier (1) and to compare the actual speed of the piston of the pressure amplifier (1) with a desired speed in order to determine the start of injection.
- An apparatus in accordance with claim 1 characterised in that the pressure amplifier is designed as a stepped piston (1) having two pistons (7, 8) with different diameters; and in that the arrangement (14) for the supplying of the fuel opens into the working chamber (10) for the smaller piston (8).
- An apparatus in accordance with claim 2 characterised in that the control means is designed as a control slider (2) which is in connection with a working chamber (9) for the larger piston (7).
- An apparatus in accordance with claim 3 characterised by an arrangement with one or more accumulators (52) for the supplying of working oil and by pre-control valves (53, 54) for each control slider (2) and each control valve (3).
- An apparatus in accordance with any one of the claims 1 to 4 characterised by an adaptive regulation device (57) which is connected for signal transmission to the sensing device (56) in order to regulate the start of the injection and/or the injection amount in dependence on the comparison between the corresponding actual and desired values.
- An apparatus in accordance with one of the claims 1 to 5 characterised in that a plurality of control valves (3) are associated with the pressure amplifier (1) in order to charge a plurality of cylinders of an internal combustion engine or a plurality of injection nozzles (5) of a cylinder with fuel.
- An apparatus in accordance with one of the claims 1 to 6 for the injection of diesel and heavy oil into the cylinders of a reciprocating piston combustion engine.
- Reciprocating piston combustion engine comprising an apparatus in accordance with one of the claims 1 to 7, said machine being a two-stroke or a four-stroke internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810617A EP0982492B1 (en) | 1998-08-28 | 1999-07-12 | Apparatus for injecting fuel in a reciprocating internal combustion engine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98810854 | 1998-08-28 | ||
| EP98810854 | 1998-08-28 | ||
| EP99810617A EP0982492B1 (en) | 1998-08-28 | 1999-07-12 | Apparatus for injecting fuel in a reciprocating internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0982492A2 EP0982492A2 (en) | 2000-03-01 |
| EP0982492A3 EP0982492A3 (en) | 2002-11-20 |
| EP0982492B1 true EP0982492B1 (en) | 2008-03-26 |
Family
ID=8236288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99810617A Expired - Lifetime EP0982492B1 (en) | 1998-08-28 | 1999-07-12 | Apparatus for injecting fuel in a reciprocating internal combustion engine |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0982492B1 (en) |
| JP (1) | JP4574762B2 (en) |
| KR (1) | KR100743208B1 (en) |
| CN (1) | CN1114758C (en) |
| DE (1) | DE59914703D1 (en) |
| DK (1) | DK0982492T3 (en) |
| PL (1) | PL197444B1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4574762B2 (en) * | 1998-08-28 | 2010-11-04 | ヴェルトジィレ シュヴァイツ アクチェンゲゼルシャフト | Fuel injection device for reciprocating piston engine |
| DE19939422A1 (en) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Fuel injection system for an internal combustion engine |
| KR20020004006A (en) * | 2000-06-29 | 2002-01-16 | 박상록 | Pressure control device of accumulating pressure thpe fuel injection system |
| DE10101358A1 (en) * | 2001-01-13 | 2002-07-25 | Bosch Gmbh Robert | Fuel injection system |
| US7588012B2 (en) | 2005-11-09 | 2009-09-15 | Caterpillar Inc. | Fuel system having variable injection pressure |
| US7543568B1 (en) * | 2008-02-14 | 2009-06-09 | Gm Global Technology Operations, Inc. | Fuel pressure amplifier for improved cranking performance |
| WO2010006599A1 (en) * | 2008-07-14 | 2010-01-21 | Man Diesel Filial Af Man Diesel Se, Tyskland | Cam driven exhaust valve actuation system for large two stroke diesel engine |
| EP2410168A1 (en) * | 2010-07-23 | 2012-01-25 | Wärtsilä Schweiz AG | Fluid dispenser and method for providing an operating fluid using a fluid dispenser |
| JP2012026396A (en) * | 2010-07-27 | 2012-02-09 | Akasaka Tekkosho:Kk | Fuel injection pump |
| CN104879258A (en) * | 2015-03-27 | 2015-09-02 | 中国北方发动机研究所(天津) | Hydraulic amplifying type ultrahigh-pressure fuel supply device |
| DK179161B1 (en) * | 2016-05-26 | 2017-12-18 | Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland | A large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore |
| CN107476915B (en) * | 2017-08-22 | 2019-11-01 | 哈尔滨工程大学 | A kind of double-acting type high pressure fuel feedway with buffer unit |
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| JPS60162021A (en) * | 1984-01-31 | 1985-08-23 | Kawasaki Heavy Ind Ltd | Fuel injection control device of internal-combustion engine |
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| GB1522954A (en) * | 1974-11-01 | 1978-08-31 | Cav Ltd | Fuel systems for internal combustion engines |
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| JPS5874867A (en) * | 1981-10-30 | 1983-05-06 | Nippon Denso Co Ltd | Fuel injection controlling method for internal combustion engine |
| JPS58214661A (en) * | 1982-06-08 | 1983-12-13 | Nippon Soken Inc | Flow measuring device and fuel injection control system of internal-combustion engine |
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| JPS6023248U (en) * | 1983-07-25 | 1985-02-18 | いすゞ自動車株式会社 | Movement amount detection device for servo plunger for fuel injection device |
| JPS60256548A (en) * | 1984-05-31 | 1985-12-18 | Isuzu Motors Ltd | Booster plunger type fuel injector |
| JPS61210264A (en) * | 1985-03-15 | 1986-09-18 | Sumio Ishikawa | Intensifying type fuel injection device |
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| JP2819963B2 (en) * | 1992-09-21 | 1998-11-05 | 日産自動車株式会社 | Accumulator type injector |
| EP0690222B1 (en) * | 1994-06-27 | 1999-08-04 | Wärtsilä NSD Schweiz AG | Injection device to inject fuel in a reciprocating internal combustion engine |
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1999
- 1999-06-30 JP JP18533599A patent/JP4574762B2/en not_active Expired - Fee Related
- 1999-07-12 DK DK99810617T patent/DK0982492T3/en active
- 1999-07-12 EP EP99810617A patent/EP0982492B1/en not_active Expired - Lifetime
- 1999-07-12 DE DE59914703T patent/DE59914703D1/en not_active Expired - Lifetime
- 1999-07-23 PL PL334586A patent/PL197444B1/en not_active IP Right Cessation
- 1999-08-27 KR KR1019990035806A patent/KR100743208B1/en not_active IP Right Cessation
- 1999-08-27 CN CN99118325A patent/CN1114758C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162021A (en) * | 1984-01-31 | 1985-08-23 | Kawasaki Heavy Ind Ltd | Fuel injection control device of internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000073912A (en) | 2000-03-07 |
| DK0982492T3 (en) | 2008-04-21 |
| DE59914703D1 (en) | 2008-05-08 |
| CN1246581A (en) | 2000-03-08 |
| EP0982492A3 (en) | 2002-11-20 |
| EP0982492A2 (en) | 2000-03-01 |
| PL334586A1 (en) | 2000-03-13 |
| JP4574762B2 (en) | 2010-11-04 |
| KR100743208B1 (en) | 2007-07-26 |
| PL197444B1 (en) | 2008-03-31 |
| KR20000017580A (en) | 2000-03-25 |
| CN1114758C (en) | 2003-07-16 |
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