EP2796695B1 - Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt - Google Patents

Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt Download PDF

Info

Publication number
EP2796695B1
EP2796695B1 EP13165517.7A EP13165517A EP2796695B1 EP 2796695 B1 EP2796695 B1 EP 2796695B1 EP 13165517 A EP13165517 A EP 13165517A EP 2796695 B1 EP2796695 B1 EP 2796695B1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply arrangement
time
solenoid
fuel supply
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.)
Active
Application number
EP13165517.7A
Other languages
English (en)
French (fr)
Other versions
EP2796695A1 (de
Inventor
Francois Fabre
Mauro Grandi
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.)
Vitesco Technologies GmbH
Original Assignee
Vitesco Technologies 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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Priority to EP13165517.7A priority Critical patent/EP2796695B1/de
Publication of EP2796695A1 publication Critical patent/EP2796695A1/de
Application granted granted Critical
Publication of EP2796695B1 publication Critical patent/EP2796695B1/de
Active 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F02M37/0058—Returnless fuel systems, i.e. the fuel return lines are not entering the fuel tank
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F02D2200/0604—Estimation of fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure

Definitions

  • the present disclosure relates to a method for operating a fuel supply arrangement. Further, it relates to a control device for a fuel supply arrangement, to a fuel supply arrangement and to a computer program product.
  • Fuel supply arrangements may be used in internal combustion engines for dosing fuel into an intake manifold or directly into the combustion chamber of a cylinder of the internal combustion engine.
  • the fuel supply arrangement may comprise a fuel reservoir for storing fuel and a fuel injector for injecting fuel into the intake manifold or the combustion chamber.
  • Publication DE 10 2008 040 244 A1 describes a method for detecting a fuel pressure based on the solenoid current using a model. Using a model involves relatively high calculation efforts.
  • a method for operating a fuel supply arrangement for an internal combustion engine is disclosed.
  • a control device for the fuel supply arrangement is disclosed, the control device being operable to carry out the method.
  • a computer program product is disclosed which is executable to perform the method.
  • the computer program product comprises computer-readable instructions on an electronic storage medium, the instructions performing the method when loaded and executed in a suitable computer, in particular in the control device.
  • the fuel supply arrangement comprises a fuel reservoir, also known as fuel rail.
  • the fuel supply arrangement further comprises a pump, in particular a high-pressure pump.
  • the pump is hydraulically coupled to the fuel reservoir for pressurizing the fuel in the fuel reservoir.
  • the fuel supply arrangement comprises at least one fuel injection valve which comprises an injection nozzle.
  • the fuel injection valve is hydraulically coupled to the fuel reservoir for dispensing fuel from the fuel supply arrangement through the injection nozzle.
  • the fuel injection valve further comprises a valve needle and an electromagnetic actuator assembly. The valve needle is displaceable for sealing and unsealing the injection nozzle.
  • the electromagnetic actuator assembly has a solenoid for displacing the valve needle. More specifically, the electromagnetic actuator assembly may have an armature which is mechanically coupled with the valve needle for displacing the valve needle to unseal the injection nozzle.
  • the solenoid when energized generates a magnetic field that may interact with the armature for moving the armature to displace the valve needle.
  • Such electromagnetic actuators are known, in principle, to the person skilled in the art and, therefore, are not described in more detail, here.
  • the fuel supply arrangement comprises the control device.
  • the control device is operable to energize the solenoid and to measure an electrical current through the solenoid.
  • the control device may be comprised by an engine control unit (ECU) or may be represented by an ECU.
  • the method comprises energizing the solenoid to displace the valve needle to a fully open position for unsealing the injection nozzle by means of operating the control device in such fashion that the electrical current through the solenoid, during a first period of time, rises to a peak value and subsequently decreases to a value within a first current range, and, in a subsequent second period of time, is maintained within the first current range.
  • the first current range has an upper limit and a lower limit.
  • the upper limit of the first current range has a smaller magnitude than the peak value in the first period of time.
  • the durations of the first and second period of time are preferably selected such that the valve needle reaches the fully open position within the second period of time.
  • the method comprises subsequently energizing the solenoid for retaining the valve needle in the fully open position by means of operating the control device to decrease the current through the solenoid from the first current range to a value within a second current range and, during a third period of time subsequent to the second period of time, maintaining it within the second current range.
  • the second current range has an upper limit and a lower limit. The upper limit of the second current range has a smaller magnitude than the lower limit of the first current range.
  • the control device is subsequently operated for de-energizing the solenoid for re-sealing the injection nozzle, in particular by decreasing the current to a value below the second current range, preferably to 0.
  • the first period of time, the second period of time - and the third period of time where appropriate - preferably succeed each other to define a single injection event.
  • the first period of time and/or the second period of time and/or the third period of time each may have a duration of 0.2 ms or more, in particular of 0.4 ms or more, in one embodiment. In one development, the first period of time and/or the second period of time and/or the third period of time each may have a duration of 1 ms or less.
  • the current is preferably basically constant, i.e. it preferably deviates by 20 % or less, in particular by 10 % or less from the time average of the current in the respective period of time.
  • the difference between the upper limit and the lower limit of the respective (i.e. first or second) current range is 30 % or less, in particular 15 % or less, of the mean value of the upper limit and the lower limit.
  • the difference between the upper limit and the lower limit of the second current range and/or the difference between the upper limit and the lower limit of the third current range is 1.5 A or less, in particular 1 A or less.
  • the method comprises operating the control device for measuring the electrical current through the solenoid at least during the second period of time, and for determining a point in time at which the valve needle has reached the fully open position by means of evaluating the measured electrical current.
  • the method further comprises inferring the fuel pressure in the fuel reservoir from the determined point in time at which the valve needle has reached the fully open position.
  • the time difference between the start of the first period of time and the point in time at which the valve needle has reached the fully open position may be related to the fuel pressure.
  • This time difference is also abbreviated as "the opening time” in the following. More specifically, the opening time may increase when the fuel pressure increases. For example, the fuel pressure is directly proportional to the opening time.
  • the method uses the fuel injection valve for determining the fuel pressure in the fuel reservoir.
  • a separate pressure sensor can be omitted.
  • the fuel supply arrangement does not comprise a separate pressure sensor.
  • Determining the point in time at which the valve needle has reached the fully open position within the second period of time may be particularly simple and/or reliable.
  • inferring the fuel pressure from the opening time may be more reliable than inferring the fuel pressure by means of monitoring the injector closing event, in particular for injection events having a comparatively short duration.
  • the method comprising the first, second and third period of time may be particularly advantageous when the control unit is operated to switch from a first voltage source to a second voltage source for energizing the solenoid, the switching in particular taking place during the second period of time or during a transient period between the second and third periods of time.
  • the risk of an unintentional current drop, leading to a movement of the valve needle away from the fully open position is particularly low.
  • the fuel injection valve is constructed for operating at comparatively high fuel pressures, for example in the range 200 bar to 250 bar and, thus, a coil having a comparatively large impedance is required which may lead to particularly high peak values of the operating current.
  • the fuel supply arrangement has a plurality of fuel injection valves.
  • the fuel supply arrangement is provided for an internal combustion engine having multiple cylinders and each fuel injection valve of the fuel supply arrangement is assigned to one of the cylinders.
  • a point in time at which the respective fuel injection valve has reached the fully open position is determined for each of the fuel injection valves.
  • determining the point in time at which the valve needle has reached the fully open position comprises detecting a current minimum in the second period of time. Detecting the current minimum within the second period of time may involve a particularly uncomplicated evaluation of the current by the control device.
  • the method comprises comparing the inferred fuel pressure to a predetermined fuel pressure and operating the control device to generate a signal if the inferred fuel pressure deviates from the predetermined fuel pressure at least by a predetermined amount.
  • the method comprises evaluating the inferred fuel pressure for detecting a failure of the fuel supply arrangement. For example, at least one of the following failure modes is detected: "fuel pressure outside the specified operating range”, “fuel pressure too low”, “fuel pressure too high”, “damaged pump”, "uncontrolled high fuel pressure because of inlet valve broken". In an expedient development, a warning message or an error message is generated from the signal. Thus, compliance with on-board diagnostic (OBD) requirements is easily achievable by means of the method.
  • OBD on-board diagnostic
  • the pump is provided for pressurizing the fuel in the fuel reservoir to a pressure of 30 bar or more, in particular of 50 bar or more and of 150 bar or less, in particular of 100 bar or less.
  • the method is particularly well suited for operating fuel supply systems in such - medium or relatively low - pressure ranges.
  • the fuel supply system for operating at these pressure ranges can be manufactured particularly cost-efficient, in particular with respect to the fuel rail design.
  • the torque losses from driving the pump may be particularly small in these pressure ranges.
  • particular small minimum fuel doses may be dispensable by the fuel injector in this way.
  • the fuel supply arrangement is provided for operating at a constant fuel pressure in each operation condition of the internal combustion engine.
  • this allows a particularly uncomplicated construction and operation of the fuel supply arrangement.
  • Figure 1 shows a schematic diagram of a fuel supply arrangement 10 of an internal combustion engine.
  • the internal combustion engine serves, for example, to drive a motor vehicle.
  • the fuel supply system 10 comprises a fuel tank 12, a first pump 14, a fuel dosing unit 16, a high-pressure pump 20, a fuel reservoir 24, at least one injection valve 26 and at least one combustion chamber 28.
  • the internal combustion engine is a four-cylinder engine having four combustion chambers 28.
  • one injection valve 26 is associated to each combustion chamber 28.
  • the first pump 14 delivers fuel from the fuel tank 12 to an inlet of the fuel dosing unit 16.
  • the fuel dosing unit 16 comprises an outlet which leads the fuel to the high-pressure pump 20.
  • the fuel supply arrangement 10 comprises a fuel supply line with different sections.
  • a first fuel supply line section 22A hydraulically couples the fuel tank 12 and the first pump 14
  • a second fuel supply line section 22B hydraulically couples the first pump 14 with the fuel dosing unit 16
  • a third fuel supply line section 22C hydraulically couples the fuel dosing unit 16 with the high-pressure pump 20.
  • the high-pressure pump 20 preferably has a delivery chamber with a jack valve disposed on its inlet side. It compresses the fuel to a high pressure between 40 bar and 150 bar, preferably between 50 bar and 100 bar, wherein the limits are included in each case.
  • the high-pressure pump 20 may be designed to deliver fuel under error-free operation conditions with a constant or mainly constant pressure value, for example of around 90 bar.
  • the high-pressure pump 20 is hydraulically coupled to the fuel reservoir 24 to deliver the fuel into the fuel reservoir 24, where the fuel is stored under the high pressure.
  • the at least one injection valve 26 is attached to that fuel reservoir 24 and has an injection nozzle 261 for dispensing fuel from the fuel supply arrangement 10 through the injection nozzle 261 directly into the associated combustion chamber 28 of the internal combustion engine.
  • Figure 2 shows a schematic cross section of a portion of one fuel injection valve 26 of the fuel supply arrangement 10, received in the associated combustion chamber 28.
  • the at least one injection valve 26 comprises valve needle 263 for sealing and unsealing the injection nozzle 261 and an electromagnetic actuator assembly 265 for displacing the valve needle 263.
  • the electromagnetic actuator assembly 265 comprises a solenoid 267 for displacing the valve needle 263 in order to unseal the injection nozzle 261.
  • the actuator assembly 265 further comprises a spring for biasing the valve needle 263 towards the injection nozzle 261 in order to seal the injection nozzle 261 when the solenoid 267 is not energized.
  • the fuel supply arrangement 10 additionally comprises a control device 40 (see Figures 1 and 2 ).
  • the control device 40 may also be denoted as an apparatus to operate the fuel supply arrangement 10.
  • the control device 40 is electrically connected to the actuator assembly 265, in particular to the solenoid 267, so that is operable to impress a current I into the solenoid 267 and to measure the current I through the solenoid 267.
  • the control device 40 is connected to the actuator assembly 265 by means of one or more wires 30, the wires 30 in particular making part of a wire harness.
  • the method comprises subsequently injecting fuel doses from the fuel reservoir 24 into each of the combustion chambers 28.
  • the control device 40 is operated to energize the solenoid 267 by means of impressing a current I into the solenoid.
  • the control device 40 is connected to at least one voltage source and supplies one or more voltage pulses to the solenoid 267.
  • Figure 3 shows the current I in Ampere through the solenoid 267 as a function of time t in milliseconds during one injection event.
  • the fuel injection valve 26 is closed. There is no current I through the solenoid 267 and the valve needle 263 is in a closing position in which it seals the injection nozzle 261.
  • the control device 40 is operated for a first period of time T 1 to apply a voltage to the solenoid 267 in such fashion that the current I through the solenoid 267 rises to a peak value I P and subsequently decreases to a value within a first current range DI 1 .
  • the second period of time T 2 directly following the first period of time T 1 , the current I is maintained within the first current range DI 1 .
  • An upper limit I 1U of the first current range DI 1 has a smaller magnitude than the peak value I P .
  • the first period of time T 1 starts at a point in time ts of around 0.7 ms and has a duration of approximately 1 ms.
  • the current I rises to a peak value I P of 12 A in the first period of time T 1 .
  • the second period of time T 2 has a duration of ca. 0.7 ms.
  • the first current range DI 1 is bounded by an upper limit I 1U of ca. 6.6 A and a lower limit I 1L of ca. 5.75 A.
  • the current through the solenoid 267 is basically constant during the second period of time T 2 .
  • the current I through the solenoid 267 effects a magnetic force which is transferred to the valve needle 263 to displace the latter from the closing position for unsealing the injection nozzle 261.
  • the durations of the first and second periods of time T 1 , T 2 are selected such that the valve needle 263 reaches a fully open position during the second period of time T 2 .
  • the injection valve 26 has a mechanical stop element - such as a pole piece of the electromagnetic actuator assembly 265 - which is operable to block further displacement of the valve needle 263 when the latter reaches the fully open position.
  • the second period of time T 2 is directly followed by a first transient period T D1 - having a duration of approximately 0.2 ms in the present embodiment - in which the control device 40 is operated to decrease the current through the solenoid 267 from the first current range DI 1 to a value within a second current range DI 2 and to maintain it within the second current range DI 2 for a third period of time T 3 .
  • An upper limit I 2U of the second current range DI 2 has a smaller magnitude than the lower limit I 1L of the first current range DI 1 . Lowering the current I to the second current range DI 2 after the valve needle has reached its fully open position during the second period of time T 2 may advantageously result in a particularly low power consumption of the fuel supply arrangement 10 in spite of a comparatively short opening time T O .
  • the third period of time T 3 may have a duration of approximately 0.6 ms.
  • the duration of the third period of time T 3 may vary according to the amount of fuel to be dispensed during the injection event.
  • the second current range DI 2 is bounded by an upper limit I 2U of ca. 3.5 A and a lower limit I 2L of ca. 2.75 A.
  • the current through the solenoid 267 is basically constant during the third period of time T 3 .
  • the control unit 40 switches of the current I through the solenoid 267 so that the solenoid is de-energized.
  • the current I through the solenoid 267 returns to 0 A during a second transient period T D2 - having a duration of approximately 0.25 ms in the present embodiment - allowing the valve needle 263 to return to the closing position for re-sealing the injection nozzle 261.
  • the current through the solenoid 267 is time-dependent in this period of time within the limits of the first current range DI 1 .
  • the control device 40 is operated to measure the current I through the solenoid 267 and to detect a current minimum, in particular corresponding to the lower limit I 1L of the first current range DI 1 .
  • the method makes use of the idea that the current minimum is correlated to the point in time to when the valve needle 263 has reached the fully open position.
  • the control device 40 is operated to determine the point in time to corresponding to the current minimum - i.e.
  • T O t O - t S .
  • the control device 40 is further operated to infer the fuel pressure in the fuel reservoir 24 from the fully open time to - more specifically from the opening time T O .
  • the method may make use of the idea that there is a linear correlation between the opening time T O and the fuel pressure in the fuel reservoir 24.
  • This correlation can for example be stored in a memory unit of the control device 40 and can be used by the control unit 40 for calculating the fuel pressure from the opening time T O . Therefore, a separate pressure sensor for measuring the fuel pressure in the fuel reservoir 24 is not needed and the fuel supply arrangement 10 does not comprise such a separate pressure sensor.
  • control device 40 is operable to monitor the inferred fuel pressure, in particular for detecting a failure of the fuel supply arrangement 10. For example, the control device 40 generates a signal if the inferred fuel pressure deviates from a predetermined fuel pressure at least by a predetermined amount. Preferably, the control device 40 is operable to generate a warning signal or a warning message if a failure of the fuel supply arrangement 10 is detected.
  • the control device 40 may comprise a processor unit and a memory unit.
  • the memory unit may comprise computer readable instructions which, when executed by the processor unit, are operable to perform the method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Verfahren zum Betreiben einer Kraftstoffversorgungsanlage (10) für einen Verbrennungsmotor,
    wobei die Kraftstoffversorgungsanlage (10), aufweist:
    - einen Kraftstoffbehälter (24),
    - eine Pumpe (20), die mit dem Kraftstoffbehälter (24) hydraulisch verbunden ist, zum Beaufschlagen des Kraftstoffs im Kraftstoffbehälter mit Druck,
    - mindestens ein Kraftstoffeinspritzventil (26), das mit dem Kraftstoffbehälter (24) hydraulisch gekoppelt ist, zum Ausgeben von Kraftstoff aus der Kraftstoffversorgungsanlage (10) durch eine Einspritzdüse (261) des Kraftstoffeinspritzventils (26), wobei das Kraftstoffeinspritzventil (26) eine Ventilnadel (263), die zum Schließen und Öffnen der Einspritzdüse (261) verstellt werden kann, und eine elektromagnetische Stellantriebseinheit (265) mit einem Solenoid (267) zum Verstellen der Ventilnadel (263) aufweist,
    und
    - eine Steuerungsvorrichtung (40) zum Erregen des Solenoids (267) und zum Messen eines elektrischen Stroms (I) durch das Solenoid (267),
    wobei das Verfahren umfasst:
    - Erregen des Solenoids (267) zum Verstellen der Ventilnadel (263) in eine vollständig offene Stellung zum Öffnen der Einspritzdüse (261) durch derartiges Betreiben der Steuerungsvorrichtung (40), dass der elektrische Strom (I) durch das Solenoid (267) während einer ersten Zeitspanne (T1) auf einen Spitzenwert (Ip) ansteigt und anschließend auf einen Wert innerhalb eines ersten Strombereichs (DI1) abfällt und in einer darauffolgenden zweiten Zeitspanne (T2) innerhalb des ersten Strombereichs (DI1) gehalten wird, wobei die Obergrenze (I1U) des ersten Strombereichs (DI1) eine kleinere Größe als der Spitzenwert (Ip) in der ersten Zeitspanne (T1) aufweist,
    - Betreiben der Steuerungsvorrichtung (40) zum Messen des elektrischen Stroms (I) durch das Solenoid (267) wenigstens während der zweiten Zeitspanne (T2),
    - Bestimmen eines Zeitpunkts (to), zu welchem die Ventilnadel (263) die vollständig offene Stellung erreicht hat, durch Auswerten des gemessenen elektrischen Stroms (I),
    - Ableiten des Kraftstoffdrucks im Kraftstoffbehälter (24) vom bestimmten Zeitpunkt (to), zu welchem die Ventilnadel (263) die vollständig offene Stellung erreicht hat, wobei das Bestimmen des Zeitpunkts (to), zu welchem die Ventilnadel (263) die vollständig offene Stellung erreicht hat, ein Detektieren eines Stromminimums (I1L) in der zweiten Zeitspanne (T2) umfasst.
  2. Verfahren nach Anspruch 1, ferner umfassend ein Erregen des Solenoids (267) nach der zweiten Zeitspanne (T2) zum Halten der Ventilnadel (263) in der vollständig offenen Stellung durch Betreiben der Steuerungsvorrichtung (40) zum Herabsetzen des Stroms (I) durch das Solenoid (267) vom ersten Strombereich (DI1) auf einen Wert innerhalb eines zweiten Strombereichs (DI2) und Halten desselben während einer dritten Zeitspanne (T3) nach der zweiten Zeitspanne (T2) innerhalb des zweiten Strombereichs (DI2), wobei die Obergrenze (I2U) des zweiten Strombereichs (DI2) eine kleinere Größe als die Untergrenze (I1L) des ersten Strombereichs (DI1) aufweist.
  3. Verfahren nach einem der vorhergehenden Ansprüche, ferner umfassend ein Vergleichen des abgeleiteten Kraftstoffdrucks mit einem vorbestimmten Kraftstoffdruck und Betreiben der Steuerungsvorrichtung (40) zum Erzeugen eines Signals, wenn der abgeleitete Kraftstoffdruck vom vorbestimmten Kraftstoffdruck wenigstens um einen vorbestimmten Betrag abweicht.
  4. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Kraftstoffversorgungsanlage (10) für Betrieb mit einem konstanten Kraftstoffdruck unter jeder Betriebsbedingung des Verbrennungsmotors vorgesehen ist.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Kraftstoffversorgungsanlage (10) keinen separaten Drucksensor zum Messen des Kraftstoffdrucks im Kraftstoffbehälter (24) aufweist.
  6. Verfahren nach einem der vorhergehenden Ansprüche, umfassend ein Auswerten des abgeleiteten Kraftstoffdrucks zum Erkennen eines Fehlers der Kraftstoffversorgungsanlage (10).
  7. Steuerungsvorrichtung (40) für eine Kraftstoffversorgungsanlage (10), wobei die Kraftstoffversorgungsanlage (10), aufweist:
    - einen Kraftstoffbehälter (24),
    - eine Pumpe (20), die mit dem Kraftstoffbehälter (24) hydraulisch verbunden ist, zum Beaufschlagen des Kraftstoffs im Kraftstoffbehälter (24) mit Druck,
    - mindestens ein Kraftstoffeinspritzventil (26), das mit dem Kraftstoffbehälter (24) hydraulisch gekoppelt ist, zum Ausgeben von Kraftstoff aus der Kraftstoffversorgungsanlage (10) durch eine Einspritzdüse (261) des Kraftstoffeinspritzventils (26), wobei das Kraftstoffeinspritzventil (26) eine Ventilnadel (263), die zum Schließen und Öffnen der Einspritzdüse (261) verstellt werden kann, und eine elektromagnetische Stellantriebseinheit (265) mit einem Solenoid (267) zum Verstellen der Ventilnadel (267) aufweist,
    und
    - die Steuervorrichtung (40),
    wobei die Steuerungsvorrichtung (40) ausgelegt ist zum:
    Erregen des Solenoids (267) und
    Messen eines elektrischen Stroms (I) durch das Solenoid (267),
    wobei die Steuerungsvorrichtung (40) ausgelegt ist zum:
    Durchführen des Verfahrens nach einem der vorhergehenden Ansprüche.
  8. Kraftstoffversorgungsanlage (10), aufweisend:
    - einen Kraftstoffbehälter (24),
    - eine Pumpe (20), die mit dem Kraftstoffbehälter (24) hydraulisch verbunden ist, zum Beaufschlagen des Kraftstoffs im Kraftstoffbehälter (24) mit Druck,
    - mindestens ein Kraftstoffeinspritzventil (26), das mit dem Kraftstoffbehälter (24) hydraulisch gekoppelt ist, zum Ausgeben von Kraftstoff aus der Kraftstoffversorgungsanlage (10) durch eine Einspritzdüse (261) des Kraftstoffeinspritzventils (26), wobei das Kraftstoffeinspritzventil (26) eine Ventilnadel (263), die zum Schließen und Öffnen der Einspritzdüse (261) verstellt werden kann, und eine elektromagnetische Stellantriebseinheit (265) mit einem Solenoid (267) zum Verstellen der Ventilnadel (263) aufweist, und
    - die Steuerungsvorrichtung (40) nach Anspruch 7.
  9. Computerprogrammprodukt, aufweisend Anweisungen zum Veranlassen des Vorrichtung nach Anspruch 7 zum Ausführen der Schritte des Verfahrens nach Anspruch 1.
EP13165517.7A 2013-04-26 2013-04-26 Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt Active EP2796695B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13165517.7A EP2796695B1 (de) 2013-04-26 2013-04-26 Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13165517.7A EP2796695B1 (de) 2013-04-26 2013-04-26 Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt

Publications (2)

Publication Number Publication Date
EP2796695A1 EP2796695A1 (de) 2014-10-29
EP2796695B1 true EP2796695B1 (de) 2020-06-10

Family

ID=48190767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165517.7A Active EP2796695B1 (de) 2013-04-26 2013-04-26 Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt

Country Status (1)

Country Link
EP (1) EP2796695B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015208573B3 (de) * 2015-05-08 2016-06-16 Continental Automotive Gmbh Druckbestimmung in einem Kraftstoff-Einspritzventil
JP6477321B2 (ja) * 2015-07-23 2019-03-06 株式会社デンソー 内燃機関の燃料噴射制御装置
WO2017129394A1 (en) * 2016-01-29 2017-08-03 Robert Bosch Gmbh A device and method to determine fuel pressure at a fuel injector
JP6720935B2 (ja) * 2017-07-28 2020-07-08 株式会社Ｓｏｋｅｎ 燃料噴射制御装置及び燃料噴射制御方法
DE102017215421A1 (de) * 2017-09-04 2019-03-07 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Betreiben eines Injektors eines Fahrzeugs, sowie Einspritzanlage für ein Fahrzeug

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843138A1 (de) * 1988-12-22 1990-06-28 Bosch Gmbh Robert Verfahren zur steuerung und erfassung der bewegung eines ankers eines elektromagnetischen schaltorgans
DE4341797A1 (de) * 1993-12-08 1995-06-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE19607073A1 (de) * 1996-02-24 1997-08-28 Bosch Gmbh Robert Verfahren zur Steuerung der Bewegung eines Ankers eines elektromagnetischen Schaltorgans
FR2866390B1 (fr) * 2004-02-18 2006-05-19 Siemens Vdo Automotive Dispositif pour surveiller la pression du carburant dans le circuit d'alimentation en carburant d'un moteur thermique a injection de carburant
DE102007032509A1 (de) * 2007-07-12 2009-01-15 Robert Bosch Gmbh Verfahren zum Betreiben eines Kraftstoffeinspritzsystems, insbesondere einer Brennkraftmaschine
DE102007063479A1 (de) * 2007-12-20 2008-11-20 Siemens Ag Verfahren und Schaltungsanordnung zum Erzeugen eines eine Endlage eines Elektromagneten anzeigenden Signals
DE102008040244A1 (de) * 2008-07-08 2010-01-14 Robert Bosch Gmbh Verfahren zum Betreiben eines Kraftstoffeinspritzventils und Steuergerät hierfür
DE102009043124B4 (de) * 2009-09-25 2011-06-01 Continental Automotive Gmbh Verfahren und Vorrichtung zum Ermitteln eines an einem Direkteinspritzventil anliegenden Kraftstoffdruckes
US8738218B2 (en) * 2009-10-13 2014-05-27 Bosch Corporation Pressure sensor diagnostic method and common rail fuel injection control device
DE102011076113B4 (de) * 2011-05-19 2016-04-14 Continental Automotive Gmbh Bestimmung des Bewegungsverhaltens eines Kraftstoffinjektors basierend auf dem zeitlichen Abstand zwischen den ersten beiden Spannungspulsen in einer Haltephase

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2796695A1 (de) 2014-10-29

Similar Documents

Publication Publication Date Title
EP2796695B1 (de) Verfahren zum betreiben einer kraftstoffversorgungsanlage, steuerungsvorrichtung für eine kraftstoffversorgungsanlage, kraftstoffversorgungsanordnung und computerprogrammprodukt
CN105317605B (zh) 用于提升燃料泵的电流脉冲控制方法
JP6221828B2 (ja) 高圧ポンプの制御装置
US7905136B2 (en) Method of operating a fuel injector
US8955490B2 (en) Fuel-pressure-sensor diagnosis device
US20060082252A1 (en) Method for determining the position of a movable shut-off element of an injection valve
US10330064B2 (en) Control device for high-pressure pump
JP2009057928A (ja) 内燃機関の燃料噴射制御装置
JPS62243963A (ja) 内燃機関用の燃料噴射装置
JP2007255394A (ja) ポンプ故障診断装置
EP2546501A1 (de) Fehlfunktionserkennungsvorrichtung für Motoren und Fehlfunktionserkennungsverfahren für Motoren
EP2116709A1 (de) Anzeige einer Temperaturveränderung in einer Magnetspule
KR101842314B1 (ko) 인젝터의 제어량을 결정하기 위한 방법
KR102220595B1 (ko) 자동차의 유압 시스템 내 압력 센서를 모니터링하기 위한 방법 및 디바이스
US7380528B2 (en) Method for operating a hydraulic actuator, especially a gas exchange valve of an internal combustion engine
US9567932B2 (en) Method for operating a valve
JP5724953B2 (ja) 燃料噴射弁の異常判定装置
JP6222338B2 (ja) 高圧ポンプの制御装置
US20120166067A1 (en) Method for controlling a fuel injector
JP6323168B2 (ja) 高圧ポンプの制御装置
JP2013177851A (ja) 過大リーク診断方法及びコモンレール式燃料噴射制御装置
WO2016173774A1 (en) Urea dosing method for vehicle exhaust systems
CN107923334B (zh) 用于喷射器阀的检测方法、致动方法以及喷射器单元
EP2587034A1 (de) Verfahren und Vorrichtung zum Betreiben einer Kraftstoffversorgungsanlage
US9438137B2 (en) Method and device for operating a piezoelectric actuator

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: 20130426

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

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150429

RBV Designated contracting states (corrected)

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

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20161107

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200109

RIC1 Information provided on ipc code assigned before grant

Ipc: F02D 41/22 20060101ALN20191218BHEP

Ipc: F02D 41/20 20060101AFI20191218BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VITESCO TECHNOLOGIES GMBH

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

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1279378

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200615

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602013069727

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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: 20200911

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: 20200910

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: 20200610

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: 20200610

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: 20200610

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200610

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

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: 20200610

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: 20200610

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: 20200610

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: 20200910

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1279378

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200610

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

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: 20200610

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: 20200610

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

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: 20201012

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: 20200610

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: 20200610

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: 20200610

Ref country code: IT

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: 20200610

Ref country code: AT

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: 20200610

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: 20200610

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: 20200610

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

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: 20201010

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: 20200610

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: 20200610

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602013069727

Country of ref document: DE

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: 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: 20200610

26N No opposition filed

Effective date: 20210311

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

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: 20200610

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: 20200610

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

Effective date: 20210426

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: 20210426

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602013069727

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210430

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: 20210426

Ref country code: FR

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

Effective date: 20210430

Ref country code: CH

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

Effective date: 20210430

Ref country code: LI

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

Effective date: 20210430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602013069727

Country of ref document: DE

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: 20210426

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

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: 20201010

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: 20210430

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: 20130426

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: 20200610

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

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

Ref country code: DE

Payment date: 20230430

Year of fee payment: 11

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

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: 20200610