EP2756184B1 - High-pressure fuel pump for injection system - Google Patents

High-pressure fuel pump for injection system Download PDF

Info

Publication number
EP2756184B1
EP2756184B1 EP12735567.5A EP12735567A EP2756184B1 EP 2756184 B1 EP2756184 B1 EP 2756184B1 EP 12735567 A EP12735567 A EP 12735567A EP 2756184 B1 EP2756184 B1 EP 2756184B1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure fuel
pressure
fuel pump
temperature sensor
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.)
Not-in-force
Application number
EP12735567.5A
Other languages
German (de)
French (fr)
Other versions
EP2756184A1 (en
Inventor
Karl-Heinz Traub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2756184A1 publication Critical patent/EP2756184A1/en
Application granted granted Critical
Publication of EP2756184B1 publication Critical patent/EP2756184B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
    • 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors
    • F02M2200/248—Temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/04—Carter parameters
    • F04B2201/0403—Carter housing temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/08—Cylinder or housing parameters
    • F04B2201/0801—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/10—Inlet temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/11—Outlet temperature

Definitions

  • the invention relates to a high-pressure fuel pump for an injection system of an internal combustion engine according to the preamble of claim 1.
  • Such a high-pressure fuel pump is through DE 102 57 914 A1 known.
  • This high-pressure fuel pump has at least one pump piston guided in a pump cylinder and movable up and down in translation.
  • a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump.
  • the temperature sensor is arranged in an engine room of the high-pressure fuel pump in which a drive shaft and a plunger are arranged, via which the pump piston is movable.
  • the temperature sensor thus determines the temperature of the fuel in the engine compartment, which does not allow any conclusions about the temperatures prevailing in the highly loaded areas of the high-pressure fuel pump.
  • a targeted determination of the fuel temperature in the highly loaded areas of the high-pressure fuel pump is not provided here.
  • this high-pressure fuel pump is further provided that when exceeding a predetermined temperature of the fuel in the interior of a fuel delivery is interrupted by the high-pressure fuel pump.
  • a high-pressure fuel pump which has at least one guided in a pump cylinder, translationally movable up and down pump piston.
  • a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump.
  • the temperature sensor is arranged in an engine room of the high-pressure fuel pump in which a drive shaft and a plunger are arranged, via which the pump piston is movable.
  • the temperature sensor thus determines the temperature of the fuel in the engine compartment, which does not allow any conclusions about the temperatures prevailing in the highly loaded areas of the high-pressure fuel pump.
  • a targeted determination of the fuel temperature in the highly loaded areas of the high-pressure fuel pump is not provided here.
  • this high-pressure fuel pump is further provided that when a predetermined temperature of the fuel in the engine compartment is exceeded, a bypass line is opened, can flow through the fuel from the interior, so that the fuel flowing through the engine room volume increases and the fuel temperature can be reduced.
  • a high-pressure fuel pump which has at least one guided in a pump cylinder, translationally movable up and down pump piston.
  • a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump.
  • the temperature sensor is arranged at the outlet of a pump working space of the high-pressure fuel pump.
  • a high-pressure fuel pump which has a guided in a pump cylinder, translationally movable up and down pump piston.
  • a temperature sensor is arranged to determine the temperature of a funded by the high-pressure fuel pump test fluid.
  • the temperature and the pressure in a pump chamber of the high-pressure fuel pump are evaluated to check whether a gap between the pump piston and the pump cylinder is set correctly. The temperature in a drive range of the high-pressure fuel pump is not determined here.
  • the high-pressure fuel pump according to the invention with the features of claim 1 has the advantage that specifically the temperature of the fuel in the highly loaded areas of the drive of the high-pressure fuel pump is determined.
  • the temperature sensor is connected to a control device for controlling a low-pressure pump of the injection system.
  • a control device for controlling a low-pressure pump of the injection system.
  • the control unit can be an independent control unit only for controlling the low-pressure pump.
  • the control device is an internal combustion engine control unit that controls or regulates all functions of the internal combustion engine and in particular of the entire injection system. The additional function can be integrated into the control unit virtually without additional effort.
  • the high-pressure fuel pump is fuel-cooled. If the fuel pump from another medium, such as oil, cooled and lubricated, the subject of the invention is also applicable to such a high-pressure fuel pump by then the measured fuel temperature is used to control, for example, the oil pump.
  • FIG. 1 illustrated low-pressure system of an injection system has a tank 1, from which is conveyed by a low-pressure pump 2 fuel via a filter 3 in an engine room 4 of a high-pressure fuel pump 5.
  • the low-pressure pump 2 is electrically operated and is thus easily controlled with respect to their capacity.
  • a camshaft 6 ( FIG. 2 ) rotatably mounted in a housing bearing 7 and a flange bearing 8.
  • the housing bearing 7 and the flange bearing 8 are both fuel-lubricated, wherein the subset used for lubrication is discharged from the engine room 4 supplied amount of fuel via a return line 9 to the tank 1.
  • Another partial flow of the fuel supplied to the engine compartment 4 is supplied to a metering unit 10, which determines the high-pressure pump working chamber 11 via a suction valve 12 supplied amount of fuel.
  • the fuel supplied to the high-pressure pump working chamber 11 is pumped by a pump piston 14 which moves up and down in a pump cylinder from the camshaft 6 (FIG. FIG. 2 ) conveyed via a check valve in a high-pressure accumulator of the fuel injection system. From the high-pressure accumulator fuel is taken from fuel injectors, if necessary, for injection into associated combustion chambers of the internal combustion engine.
  • the side view of in FIG. 2 shows a schematically illustrated two-stamp high-pressure fuel pump 5, but the invention is also applicable to a stamped or three-stamp high-pressure fuel pump 5.
  • the two-stamp high-pressure fuel pump 5 has a pump housing 16, in which the camshaft 6 is rotatably mounted. During a rotational movement of the camshaft 6, this moves with its cams in each case a roller tappet 17 of the two pump elements up and down.
  • Each of the two roller tappet 17 cooperates with a pump piston 14, and is in a receptacle in the form of a bore 13 translationally guided up and down movable.
  • Each of the pump piston 14 acts - as already below FIG. 1 described - with a high pressure pump working space 11 for conveying fuel into a high-pressure accumulator together. In this case, for example, a fuel pressure of approximately 1600 bar is set in the high-pressure accumulator.
  • the pump piston 14 and together with the roller tappet 17 is pressed against the camshaft 6 by a pump spring 18, which is supported on a pump cylinder head and a pump piston foot 19.
  • the pump spring 18 is arranged in an upper plunger space 20 in the bore 13, wherein the upper plunger space 20 is connected via a connecting bore in the pump housing 16 with the engine room 4.
  • the two upper plunger chambers 20 of the two pump elements via a connecting line 21, which is preferably designed as a bore, connected to each other.
  • the upper plunger space 20 is disposed near the high pressure pump working space 11 so that the upper plunger space 20 is a portion of the high pressure fuel pump 5 in which high fuel temperatures prevail.
  • a temperature sensor 22 is arranged in the region of the connecting pipe 21 or the upper plunger chamber 20 (with only one pump element).
  • the temperature sensor 22 detects the prevailing in the upper plunger chamber 20 or the connecting line 21 fuel temperature and leads them to a control unit, which is for example the control unit for electronic diesel control (EDC) to. From this control unit is among other things the electrical operated low pressure pump 2 controlled in dependence of the measured temperature. Particularly at high measured temperatures, the delivery rate of the electrically operated low-pressure pump 2 is increased and thus the cooling of the high-pressure fuel pump 5 is intensified.
  • EDC electronic diesel control
  • the pump housing 16 has an inlet bore 23, via which the fuel delivered by the low-pressure electric pump enters the engine compartment 4.
  • a return bore 24 leads to the overflow valve 15 or the overflow valve 15 is inserted into the return bore and the return line 9 is connected to the return bore.
  • the metering unit is contrary to the representation of FIG. 1 normally installed in the pump housing 16 and connected via an internal connection with the high-pressure pump working chamber via the suction valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Die Erfindung betrifft eine Kraftstoffhochdruckpumpe für ein Einspritzsystem einer Brennkraftmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a high-pressure fuel pump for an injection system of an internal combustion engine according to the preamble of claim 1.

Eine solche Kraftstoffhochdruckpumpe ist durch die DE 102 57 914 A1 bekannt. Diese Kraftstoffhochdruckpumpe weist wenigstens einen in einem Pumpenzylinder geführten, translatorisch auf und ab bewegbaren Pumpenkolben auf. An der Kraftstoffhochdruckpumpe ist ein Temperatursensor angeordnet zur Ermittlung der Temperatur des von der Kraftstoffhochdruckpumpe geförderten Kraftstoffs. Der Temperatursensor ist in einem Triebwerksraum der Kraftstoffhochdruckpumpe angeordnet in dem eine Antriebswelle sowie ein Stößel angeordnet sind, über den der Pumpenkolben bewegbar ist. Durch den Temperatursensor wird somit die Temperatur des Kraftstoffs im Triebwerksraum ermittelt, die keinen Rückschluss auf die in den höchstbelasteten Bereichen der Kraftstoffhochdruckpumpe herrschenden Temperaturen zulässt. Eine gezielte Ermittlung der Kraftstofftemperatur in den höchstbelasteten Bereichen der Kraftstoffhochdruckpumpe ist hier nicht vorgesehen. Bei dieser Kraftstoffhochdruckpumpe ist weiter vorgesehen, dass bei Überschreiten einer vorgegebenen Temperatur des Kraftstoffs im Innenraum eine Kraftstoffförderung durch die Kraftstoffhochdruckpumpe unterbrochen wird.Such a high-pressure fuel pump is through DE 102 57 914 A1 known. This high-pressure fuel pump has at least one pump piston guided in a pump cylinder and movable up and down in translation. At the high-pressure fuel pump, a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump. The temperature sensor is arranged in an engine room of the high-pressure fuel pump in which a drive shaft and a plunger are arranged, via which the pump piston is movable. The temperature sensor thus determines the temperature of the fuel in the engine compartment, which does not allow any conclusions about the temperatures prevailing in the highly loaded areas of the high-pressure fuel pump. A targeted determination of the fuel temperature in the highly loaded areas of the high-pressure fuel pump is not provided here. In this high-pressure fuel pump is further provided that when exceeding a predetermined temperature of the fuel in the interior of a fuel delivery is interrupted by the high-pressure fuel pump.

Durch die JP 61 212661 A ist eine Kraftstoffhochdruckpumpe bekannt, die wenigstens einen in einem Pumpenzylinder geführten, translatorisch auf und ab bewegbaren Pumpenkolben aufweist. An der Kraftstoffhochdruckpumpe ist ein Temperatursensor angeordnet zur Ermittlung der Temperatur des von der Kraftstoffhochdruckpumpe geförderten Kraftstoffs. Der Temperatursensor ist in einem Triebwerksraum der Kraftstoffhochdruckpumpe angeordnet in dem eine Antriebswelle sowie ein Stößel angeordnet sind, über den der Pumpenkolben bewegbar ist. Durch den Temperatursensor wird somit die Temperatur des Kraftstoffs im Triebwerksraum ermittelt, die keinen Rückschluss auf die in den höchstbelasteten Bereichen der Kraftstoffhochdruckpumpe herrschenden Temperaturen zulässt. Eine gezielte Ermittlung der Kraftstofftemperatur in den höchstbelasteten Bereichen der Kraftstoffhochdruckpumpe ist hier nicht vorgesehen. Bei dieser Kraftstoffhochdruckpumpe ist weiter vorgesehen, dass bei Überschreiten einer vorgegebenen Temperatur des Kraftstoffs im Triebwerksraum eine Bypassleitung geöffnet wird, über die Kraftstoff aus dem Innenraum abströmen kann, so dass die den Triebwerksraum durchströmende Kraftstoffmenge erhöht und die Kraftstofftemperatur verringert werden kann.By the JP 61 212661 A a high-pressure fuel pump is known, which has at least one guided in a pump cylinder, translationally movable up and down pump piston. At the high-pressure fuel pump, a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump. The temperature sensor is arranged in an engine room of the high-pressure fuel pump in which a drive shaft and a plunger are arranged, via which the pump piston is movable. The temperature sensor thus determines the temperature of the fuel in the engine compartment, which does not allow any conclusions about the temperatures prevailing in the highly loaded areas of the high-pressure fuel pump. A targeted determination of the fuel temperature in the highly loaded areas of the high-pressure fuel pump is not provided here. In this high-pressure fuel pump is further provided that when a predetermined temperature of the fuel in the engine compartment is exceeded, a bypass line is opened, can flow through the fuel from the interior, so that the fuel flowing through the engine room volume increases and the fuel temperature can be reduced.

Durch die EP 1 411 240 A1 ist eine Kraftstoffhochdruckpumpe bekannt, die wenigstens einen in einem Pumpenzylinder geführten, translatorisch auf und ab bewegbaren Pumpenkolben aufweist. An der Kraftstoffhochdruckpumpe ist ein Temperatursensor angeordnet zur Ermittlung der Temperatur des von der Kraftstoffhochdruckpumpe geförderten Kraftstoffs. Der Temperatursensor ist am Auslass eines Pumpenarbeitsraums der Kraftstoffhochdruckpumpe angeordnet. Durch den Temperatursensor wird somit die Temperatur des durch die Kraftstoffhochdruckpumpe geförderten Kraftstoffs ermittelt, der keinen Rückschluss über die Temperatur des Kraftstoffs in hochbelasteten Bereichen des Antriebs der Kraftstoffhochdruckpumpe zulässt.By the EP 1 411 240 A1 a high-pressure fuel pump is known, which has at least one guided in a pump cylinder, translationally movable up and down pump piston. At the high-pressure fuel pump, a temperature sensor is arranged to determine the temperature of the fuel delivered by the high-pressure fuel pump. The temperature sensor is arranged at the outlet of a pump working space of the high-pressure fuel pump. Thus, the temperature of the fuel delivered by the high-pressure fuel pump is determined by the temperature sensor, which allows no conclusion about the temperature of the fuel in highly loaded areas of the drive of the high-pressure fuel pump.

Durch die JP 2000 130298 A ist eine Kraftstoffhochdruckpumpe bekannt, die einen in einem Pumpenzylinder geführten, translatorisch auf und ab bewegbaren Pumpenkolben aufweist. An der Kraftstoffhochdruckpumpe ist ein Temperatursensor angeordnet zur Ermittlung der Temperatur eines von der Kraftstoffhochdruckpumpe geförderten Testfluids. In einem Testbetrieb der Kraftstoffhochdruckpumpe werden die Temperatur und der Druck in einem Pumpenarbeitsraum der Kraftstoffhochdruckpumpe ausgewertet, um zu prüfen, ob ein Spalt zwischen dem Pumpenkolben und dem Pumpenzylinder korrekt eingestellt ist. Die Temperatur in einem Antriebsbereich der Kraftstoffhochdruckpumpe wird hier nicht ermittelt.By the JP 2000 130298 A a high-pressure fuel pump is known, which has a guided in a pump cylinder, translationally movable up and down pump piston. At the high-pressure fuel pump, a temperature sensor is arranged to determine the temperature of a funded by the high-pressure fuel pump test fluid. In a test mode of the high-pressure fuel pump, the temperature and the pressure in a pump chamber of the high-pressure fuel pump are evaluated to check whether a gap between the pump piston and the pump cylinder is set correctly. The temperature in a drive range of the high-pressure fuel pump is not determined here.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Kraftstoffhochdruckpumpe mit den Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, dass gezielt die Temperatur des Kraftstoffs in den höchstbelasteten Bereichen des Antriebs der Kraftstoffhochdruckpumpe ermittelt wird.The high-pressure fuel pump according to the invention with the features of claim 1 has the advantage that specifically the temperature of the fuel in the highly loaded areas of the drive of the high-pressure fuel pump is determined.

In weiterer Ausgestaltung der Erfindung ist der Temperatursensor mit einem Steuergerät zur Steuerung einer Niederdruckpumpe des Einspritzsystems verschaltet. Dadurch kann die Förderung der Niederdruckpumpe, die bevorzugt eine elektrische Niederdruckpumpe ist, in einfacher Weise gesteuert werden. Das Steuergerät kann ein eigenständiges Steuergerät nur zur Steuerung der Niederdruckpumpe sein. Bevorzugt ist das Steuergerät ein Brennkraftmaschinensteuergerät, das alle Funktionen der Brennkraftmaschine und insbesondere des gesamten Einspritzsystems steuert beziehungsweise regelt. Die zusätzliche Funktion ist praktisch ohne Mehraufwand in das Steuergerät integrierbar.In a further embodiment of the invention, the temperature sensor is connected to a control device for controlling a low-pressure pump of the injection system. As a result, the delivery of the low-pressure pump, which is preferably a low-pressure electric pump, can be controlled in a simple manner. The control unit can be an independent control unit only for controlling the low-pressure pump. Preferably, the control device is an internal combustion engine control unit that controls or regulates all functions of the internal combustion engine and in particular of the entire injection system. The additional function can be integrated into the control unit virtually without additional effort.

In Weiterbildung der Erfindung ist die Kraftstoffhochdruckpumpe kraftstoffgekühlt. Ist die Kraftstoffpumpe von einem anderen Medium, beispielsweise Öl, gekühlt und geschmiert, ist der Gegenstand der Erfindung auch auf eine solche Kraftstoffhochdruckpumpe anwendbar, indem dann die gemessene Kraftstofftemperatur zur Regelung beispielsweise der Ölförderpumpe herangezogen wird.In a further development of the invention, the high-pressure fuel pump is fuel-cooled. If the fuel pump from another medium, such as oil, cooled and lubricated, the subject of the invention is also applicable to such a high-pressure fuel pump by then the measured fuel temperature is used to control, for example, the oil pump.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in den Figuren dargestelltes Ausführungsbeispiel der Erfindung näher beschrieben ist.Further advantageous embodiments of the invention are described in the drawings, in which an illustrated in the figures embodiment of the invention is described in detail.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Es zeigen:

  • Figur 1 ein schematisches Schaltschema eines Niederdruckkreislaufs eines Einspritzsystems mit einer Kraftstoffhochdruckpumpe und
  • Figur 2 eine Seitenansicht einer schematisch dargestellten Kraftstoffhochdruckpumpe, die als Zweistempel-Kraftstoffhochdruckpumpe ausgebildet ist.
Show it:
  • FIG. 1 a schematic circuit diagram of a low-pressure circuit of an injection system with a high-pressure fuel pump and
  • FIG. 2 a side view of a high-pressure fuel pump shown schematically, which is designed as a two-stamp high-pressure fuel pump.

Das in der Figur 1 dargestellte Niederdrucksystem eines Einspritzsystems weist einen Tank 1 auf, aus dem von einer Niederdruckpumpe 2 Kraftstoff über einen Filter 3 in einen Triebwerksraum 4 einer Kraftstoffhochdruckpumpe 5 gefördert wird. Die Niederdruckpumpe 2 wird elektrisch betrieben und ist somit bezüglich ihrer Förderleistung leicht regelbar.That in the FIG. 1 illustrated low-pressure system of an injection system has a tank 1, from which is conveyed by a low-pressure pump 2 fuel via a filter 3 in an engine room 4 of a high-pressure fuel pump 5. The low-pressure pump 2 is electrically operated and is thus easily controlled with respect to their capacity.

In dem Triebwerksraum 4 der Kraftstoffhochdruckpumpe 5 ist eine Nockenwelle 6 (Figur 2) drehbar in einem Gehäuselager 7 und einem Flanschlager 8 gelagert. Das Gehäuselager 7 und das Flanschlager 8 sind beide kraftstoffgeschmiert, wobei die zur Schmierung herangezogene Teilmenge von der dem Triebwerksraum 4 zugeführten Kraftstoffmenge über eine Rücklaufleitung 9 zu dem Tank 1 abgeführt wird. Ein weiterer Teilstrom des dem Triebwerksraum 4 zugeführten Kraftstoffs wird einer Zumesseinheit 10 zugeführt, die die dem Hochdruckpumpenarbeitsraum 11 über ein Saugventil 12 zugeführte Kraftstoffmenge bestimmt. Der dem Hochdruckpumpenarbeitsraum 11 zugeführte Kraftstoff wird von einem in einem Pumpenzylinder von der Nockenwelle 6 translatorisch auf und ab bewegten Pumpenkolben 14 (Figur 2) über ein Rückschlagventil in einen Hochdruckspeicher des Kraftstoffeinspritzsystems gefördert. Aus dem Hochdruckspeicher wird von Kraftstoffinjektoren Kraftstoff bedarfsweise zur Einspritzung in zugeordnete Brennräume der Brennkraftmaschine entnommen.In the engine room 4 of the high-pressure fuel pump 5 is a camshaft 6 ( FIG. 2 ) rotatably mounted in a housing bearing 7 and a flange bearing 8. The housing bearing 7 and the flange bearing 8 are both fuel-lubricated, wherein the subset used for lubrication is discharged from the engine room 4 supplied amount of fuel via a return line 9 to the tank 1. Another partial flow of the fuel supplied to the engine compartment 4 is supplied to a metering unit 10, which determines the high-pressure pump working chamber 11 via a suction valve 12 supplied amount of fuel. The fuel supplied to the high-pressure pump working chamber 11 is pumped by a pump piston 14 which moves up and down in a pump cylinder from the camshaft 6 (FIG. FIG. 2 ) conveyed via a check valve in a high-pressure accumulator of the fuel injection system. From the high-pressure accumulator fuel is taken from fuel injectors, if necessary, for injection into associated combustion chambers of the internal combustion engine.

Vor der Zuführung zu der Zumesseinheit 10 zweigt eine Leitung ab, in die ein Überströmventil 15 eingesetzt ist und wobei der Ausgang aus dem Überströmventil 15 in die Rücklaufleitung 9 einmündet. Von der Zumesseinheit 10 nicht in den Hochdruckpumpenarbeitsraum 11 weitergeführter Kraftstoff wird somit über das Überströmventil 15 und die Rücklaufleitung 9 zurück in den Tank 1 geleitet.Before feeding to the metering unit 10 branches off a line into which an overflow valve 15 is inserted and wherein the output from the overflow valve 15 opens into the return line 9. From the metering unit 10 not continued in the high-pressure pump working chamber 11 fuel is thus passed through the overflow valve 15 and the return line 9 back into the tank 1.

Die Seitenansicht der in Figur 2 zeigt eine schematisch dargestellte Zweistempel-Kraftstoffhochdruckpumpe 5, wobei die Erfindung aber auch bei einer Einstempel-oder Dreistempel-Kraftstoffhochdruckpumpe 5 anwendbar ist. Die Zweistempel-Kraftstoffhochdruckpumpe 5 weist ein Pumpengehäuse 16 auf, in dem die Nockenwelle 6 drehbar gelagert ist. Bei einer Drehbewegung der Nockenwelle 6 bewegt diese mit ihren Nocken jeweils einen Rollenstößel 17 der beiden Pumpenelemente auf und ab. Jeder der beiden Rollenstößel 17 wirkt mit einem Pumpenkolben 14 zusammen, und ist in einer Aufnahme in Form einer Bohrung 13 translatorisch auf und ab bewegbar geführt. Jeder der Pumpenkolben 14 wirkt - wie bereits unter Figur 1 beschrieben - mit einem Hochdruckpumpenarbeitsraum 11 zur Förderung von Kraftstoff in einen Hochdruckspeicher zusammen. Dabei wird in dem Hochdruckspeicher beispielsweise ein Kraftstoffdruck von circa 1600 bar eingestellt.The side view of in FIG. 2 shows a schematically illustrated two-stamp high-pressure fuel pump 5, but the invention is also applicable to a stamped or three-stamp high-pressure fuel pump 5. The two-stamp high-pressure fuel pump 5 has a pump housing 16, in which the camshaft 6 is rotatably mounted. During a rotational movement of the camshaft 6, this moves with its cams in each case a roller tappet 17 of the two pump elements up and down. Each of the two roller tappet 17 cooperates with a pump piston 14, and is in a receptacle in the form of a bore 13 translationally guided up and down movable. Each of the pump piston 14 acts - as already below FIG. 1 described - with a high pressure pump working space 11 for conveying fuel into a high-pressure accumulator together. In this case, for example, a fuel pressure of approximately 1600 bar is set in the high-pressure accumulator.

Der Pumpenkolben 14 und mit diesem zusammen der Rollenstößel 17 wird von einer Pumpenfeder 18, die sich an einem Pumpenzylinderkopf und einem Pumpenkolbenfuß 19 abstützt, gegen die Nockenwelle 6 gedrückt. Die Pumpenfeder 18 ist in einem oberen Stößelraum 20 in der Bohrung 13 angeordnet, wobei der obere Stößelraum 20 über eine Verbindungsbohrung in dem Pumpengehäuse 16 mit dem Triebwerksraum 4 verbunden ist. Weiterhin sind die beiden oberen Stößelräume 20 der beiden Pumpenelemente über eine Verbindungsleitung 21, die bevorzugt als Bohrung ausgebildet ist, miteinander verbunden. Der obere Stößelraum 20 ist nahe dem Hochdruckpumpenarbeitsraum 11 angeordnet, so dass der obere Stößelraum 20 ein Bereich der Kraftstoffhochdruckpumpe 5 ist, in dem hohe Kraftstofftemperaturen herrschen.The pump piston 14 and together with the roller tappet 17 is pressed against the camshaft 6 by a pump spring 18, which is supported on a pump cylinder head and a pump piston foot 19. The pump spring 18 is arranged in an upper plunger space 20 in the bore 13, wherein the upper plunger space 20 is connected via a connecting bore in the pump housing 16 with the engine room 4. Furthermore, the two upper plunger chambers 20 of the two pump elements via a connecting line 21, which is preferably designed as a bore, connected to each other. The upper plunger space 20 is disposed near the high pressure pump working space 11 so that the upper plunger space 20 is a portion of the high pressure fuel pump 5 in which high fuel temperatures prevail.

Bei Betrieb der Kraftstoffhochdruckpumpe 5 erfolgt ein intensiver Kraftstoffaustausch zwischen dem Triebwerksraum 4 und den beiden durch die Verbindungsleitung 21 miteinander verbundenen oberen Stößelräumen 20. Ein Temperatursensor 22 wird im Bereich der Verbindungsleitung 21 oder des oberen Stößelraums 20 (bei nur einem Pumpenelement) angeordnet. Der Temperatursensor 22 erfasst die in dem oberen Stößelraum 20 oder der Verbindungsleitung 21 herrschende Kraftstofftemperatur und führt diese einem Steuergerät, das beispielsweise das Steuergerät zur elektronischen Dieselregelung (EDC) ist, zu. Von diesem Steuergerät wird unter anderem die elektrisch betriebene Niederdruckpumpe 2 in Abhängigkeit der gemessenen Temperatur gesteuert. Insbesondere bei hohen gemessenen Temperaturen wird die Förderleistung der elektrisch betriebenen Niederdruckpumpe 2 erhöht und somit die Kühlung der Kraftstoffhochdruckpumpe 5 intensiviert.During operation of the high-pressure fuel pump 5, intensive fuel exchange takes place between the engine compartment 4 and the two upper plunger chambers 20 interconnected by the connecting cable 21. A temperature sensor 22 is arranged in the region of the connecting pipe 21 or the upper plunger chamber 20 (with only one pump element). The temperature sensor 22 detects the prevailing in the upper plunger chamber 20 or the connecting line 21 fuel temperature and leads them to a control unit, which is for example the control unit for electronic diesel control (EDC) to. From this control unit is among other things the electrical operated low pressure pump 2 controlled in dependence of the measured temperature. Particularly at high measured temperatures, the delivery rate of the electrically operated low-pressure pump 2 is increased and thus the cooling of the high-pressure fuel pump 5 is intensified.

Das Pumpengehäuse 16 weist schließlich eine Zulaufbohrung 23 auf, über die der von der elektrischen Niederdruckpumpe geförderte Kraftstoff in den Triebwerksraum 4 eintritt. Eine Rücklaufbohrung 24 führt zu dem Überströmventil 15 oder das Überströmventil 15 ist in die Rücklaufbohrung eingesetzt und die Rücklaufleitung 9 ist an die Rücklaufbohrung angeschlossen. Die Zumesseinheit ist entgegen der Darstellung der Figur 1 normalerweise in das Pumpengehäuse 16 eingebaut und mittels einer internen Verbindung mit dem Hochdruckpumpenarbeitsraum über das Saugventil verbunden.Finally, the pump housing 16 has an inlet bore 23, via which the fuel delivered by the low-pressure electric pump enters the engine compartment 4. A return bore 24 leads to the overflow valve 15 or the overflow valve 15 is inserted into the return bore and the return line 9 is connected to the return bore. The metering unit is contrary to the representation of FIG. 1 normally installed in the pump housing 16 and connected via an internal connection with the high-pressure pump working chamber via the suction valve.

Claims (4)

  1. High-pressure fuel pump (5) for an injection system of an internal combustion engine, having a pump housing (16) and having at least one pump piston (14) which is guided in a pump cylinder and which is movable up and down in translational fashion, wherein a temperature sensor (22) is provided for determining a temperature of the fuel delivered by the high-pressure fuel pump (5), which temperature sensor is arranged at the high-pressure fuel pump (5), wherein the pump piston (14) can be moved by way of a tappet (17), characterized in that the tappet (17) is guided in a receptacle (13), in that the tappet (17) delimits, in the receptacle (13), an upper tappet chamber (20) which faces away from a drive shaft (6), and in that the temperature sensor (22) is arranged in the upper tappet chamber (20), or in that two pump pistons (14) with in each case one tappet (17) are provided, which tappets each delimit an upper tappet chamber (20), and in that the temperature sensor (22) is arranged in a connecting line (21) between the two upper tappet chambers (20).
  2. High-pressure fuel pump (5) according to Claim 1, characterized in that the temperature sensor (22) is connected to a control unit for controlling a low-pressure pump (2) of the injection system.
  3. High-pressure fuel pump according to Claim 2, characterized in that the low-pressure pump (2) is an electrically operated low-pressure pump (2).
  4. High-pressure fuel pump according to one of the preceding claims, characterized in that the high-pressure fuel pump (5) is cooled by way of fuel.
EP12735567.5A 2011-09-14 2012-07-18 High-pressure fuel pump for injection system Not-in-force EP2756184B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110082704 DE102011082704A1 (en) 2011-09-14 2011-09-14 High-pressure fuel pump for an injection system
PCT/EP2012/064076 WO2013037542A1 (en) 2011-09-14 2012-07-18 High-pressure fuel pump for injection system

Publications (2)

Publication Number Publication Date
EP2756184A1 EP2756184A1 (en) 2014-07-23
EP2756184B1 true EP2756184B1 (en) 2016-02-03

Family

ID=46514396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12735567.5A Not-in-force EP2756184B1 (en) 2011-09-14 2012-07-18 High-pressure fuel pump for injection system

Country Status (3)

Country Link
EP (1) EP2756184B1 (en)
DE (1) DE102011082704A1 (en)
WO (1) WO2013037542A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013210231A1 (en) 2013-06-03 2014-12-04 Robert Bosch Gmbh High-pressure pump for a fuel injection system and method for determining the fuel temperature in a high-pressure pump
DE102013212237A1 (en) 2013-06-26 2014-12-31 Robert Bosch Gmbh high pressure pump
DE102014211472A1 (en) 2014-06-16 2015-12-17 Robert Bosch Gmbh Fluid pump
CN111173633B (en) * 2019-12-31 2022-04-05 潍柴动力股份有限公司 Method, device and system for alarming fuel oil supply fault

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212661A (en) * 1985-03-19 1986-09-20 Nippon Denso Co Ltd Distributor type fuel injection pump
DE3521348A1 (en) * 1985-06-14 1986-12-18 Klöckner-Humboldt-Deutz AG, 5000 Köln Injection pump with adjustable full load stop
DE3739198C1 (en) * 1987-11-19 1989-05-03 Bosch Gmbh Robert Fuel injection pump for internal combustion engines
JP2973674B2 (en) * 1992-01-22 1999-11-08 株式会社デンソー Distribution type fuel injection pump
GB9604897D0 (en) * 1996-03-07 1996-05-08 Lucas Ind Plc Improvements relating to fuel injection pumps for internal combustion engines and to ic engines incorporating them
JP2000130298A (en) * 1998-10-23 2000-05-09 Toyota Motor Corp Method and device for inspecting fuel pump
US6722864B2 (en) * 2001-12-12 2004-04-20 Denso Corporation Fuel injection pump
FI117350B (en) * 2002-10-16 2006-09-15 Waertsilae Finland Oy Hardware and Method for Fuel Supply System
DE102006048717A1 (en) 2006-10-16 2008-04-17 Robert Bosch Gmbh Pump nozzle injection system pumping characteristics determining method for internal combustion engine, involves varying temperature of fuel during determination of pump characteristics of injection system of combustion engine

Also Published As

Publication number Publication date
WO2013037542A1 (en) 2013-03-21
EP2756184A1 (en) 2014-07-23
DE102011082704A1 (en) 2013-03-14

Similar Documents

Publication Publication Date Title
EP2344749B1 (en) High-pressure fuel pump for an internal combustion engine
DE19652831B4 (en) Pressure fluid feed system for the supply of high pressure manifolds
EP1537325B1 (en) Fuel injection device for an internal combustion engine
EP2459865B1 (en) High pressure injection system having fuel cooling from low pressure region
DE19746563A1 (en) Fuel injection system for IC engine
EP2756184B1 (en) High-pressure fuel pump for injection system
WO2010060700A1 (en) High-pressure pump arrangement
EP2591225A1 (en) Fuel system for an internal combustion engine
WO2007122023A1 (en) High-pressure fuel delivery device
DE112009001971T5 (en) Check valve with separate spherical spring guide
DE102010039207A1 (en) Diesel fuel injection system i.e. common-rail injection system, for self-activating combustion engine, has pump with pump casing, and relief valve whose control side comprising plunger space is arranged between roller shaft and pump piston
WO2002081920A1 (en) Single-plunger injection pump for a common rail fuel injection system
DE102010051761A1 (en) Method for cooling a high pressure ram
DE102008058288A1 (en) Pressure relief valve for high pressure pump for limiting pressure of fluid, comprises valve housing with longitudinal axis and valve housing recess
DE102008059638A1 (en) high pressure pump
DE102010041063A1 (en) Fuel injection system for combustion engine, has relief valves provided with temperature-dependent working device that is interconnected at suction side of inlet pressure pump and fuel return line
EP1394403B1 (en) Fuel system for an internal combustion engine
DE112021004171T5 (en) FUEL PUMP
DE102013209760A1 (en) pump
DE102013207771A1 (en) Pump, in particular fuel pump
DE102011076076A1 (en) Piston pump used in fuel supply system of motor car, has coupling element that is coupled with housing and is projected into recess portion of drive shaft, so as to rotate drive shaft with respect to coupling element
EP2409015B1 (en) High pressure pump
EP2697501B1 (en) High pressure fuel pump for a fuel injection system of an internal combustion engine
DE102007000104B4 (en) regulator
WO2005038236A1 (en) Fuel injection device for an internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140414

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 51/00 20060101ALI20150424BHEP

Ipc: F04B 53/08 20060101ALI20150424BHEP

Ipc: F04B 49/06 20060101ALI20150424BHEP

Ipc: F04B 1/04 20060101ALI20150424BHEP

Ipc: F02M 59/44 20060101AFI20150424BHEP

Ipc: F04B 39/06 20060101ALI20150424BHEP

Ipc: F02M 53/00 20060101ALI20150424BHEP

Ipc: F02M 57/00 20060101ALI20150424BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150721

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 773826

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160215

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012005877

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Ref country code: NL

Ref legal event code: MP

Effective date: 20160203

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160504

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160503

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160603

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160603

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012005877

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

26N No opposition filed

Effective date: 20161104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160503

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160718

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 773826

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170718

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20210730

Year of fee payment: 10

Ref country code: FR

Payment date: 20210722

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220927

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220718

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502012005877

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240201