EP1519026A2 - Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit einem Ventil - Google Patents
Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit einem Ventil Download PDFInfo
- Publication number
- EP1519026A2 EP1519026A2 EP04022133A EP04022133A EP1519026A2 EP 1519026 A2 EP1519026 A2 EP 1519026A2 EP 04022133 A EP04022133 A EP 04022133A EP 04022133 A EP04022133 A EP 04022133A EP 1519026 A2 EP1519026 A2 EP 1519026A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve seat
- time
- valve member
- pump
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 17
- 238000002485 combustion reaction Methods 0.000 description 15
- 238000012937 correction Methods 0.000 description 15
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000012530 fluid Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010972 statistical evaluation Methods 0.000 description 1
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
-
- 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
- F02M57/02—Injectors structurally combined with fuel-injection pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- 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
- F02D2041/2065—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control being related to the coil temperature
Definitions
- the invention relates to a method and a device for Controlling a valve. It also relates to a method and a device for controlling a pump-nozzle device with a valve.
- the valve has a valve drive, which as Piezoactuator is formed, a valve member, a valve body and a valve seat.
- a pump-nozzle device becomes in particular for supplying fuel to a combustion chamber of a Cylinder of an internal combustion engine, in particular a diesel internal combustion engine, used.
- the drive of a Piston of the pump is preferably via a camshaft an internal combustion engine by means of a rocker arm.
- the pump is connected via the valve to a low-pressure fuel supply device hydraulically coupled. It is output side hydraulically coupled to the nozzle unit. Start of injection and injection quantity are through the valve and its Valve drive determined. Due to the compact design of the pump-nozzle device results in a very low volume of high pressure and a great hydraulic rigidity. It will be like that very high injection pressures of about 2,000 bar. This high injection pressure combined with good controllability enable the start of injection and the injection quantity a significant reduction in emissions at the same time low fuel consumption when using the internal combustion engine.
- a pump-nozzle device with a pump and a valve with a valve member, the hydraulic coupling of a Ab horrraums with a Flow channel controls.
- the drainage channel is hydraulically coupled with the pump and a nozzle unit.
- An inlet channel is provided, which is hydraulically coupled to the Ab horrraum.
- the valve member is a piezoelectric valve actuator assigned, via which the valve member between two end positions can be adjusted. In a first end position of the valve member, the drainage channel is hydraulically coupled with a Ab tenuraum and this in turn with the inlet channel. In a second end position of the valve member is the Drain channel hydraulically decoupled from the Abberichtraum and the valve member is in a valve seat of the valve.
- the valve member In the first end position of the valve member is during a Delivery strokes of the pump fluid from the inlet channel via the Abersonraum and the drainage channel sucked by the pump. While a working stroke of a pump piston of the pump is in the first end position of the valve member fluid from the pump pushed back via the supply channel, the discharge chamber in the drainage channel. In the second end position of the valve member can during the delivery stroke of the pump piston because of the missing hydraulic coupling of the drainage channel with the discharge chamber and no fluid is pushed back to the drain channel and the pump piston generates high pressure. With crossing a predetermined pressure threshold opens a nozzle needle the Nozzle unit, a nozzle of the nozzle unit and there is a Injection of the fluid.
- the end of injection is determined by that the valve member by means of the actuator in its first end position is controlled and so fluid over the Return flow channel in the Ab tenuraum and the inlet channel can, which has the consequence that the pressure in the pump and thus also decreases in the nozzle unit, which in turn to a closing of the nozzle unit leads.
- a valve is known with a Actuator driven by a piezoelectric actuator becomes.
- the piezoelectric actuator is simultaneously used as a pressure sensor used.
- the voltage of the piezoelectric actuator is evaluated so that a voltage change occurs and this is detected as a detection signal. From the Detection signal is derived information about it, too at what point in time the valve member actually from its valve seat takes off and the pressure in a control room to drop starts.
- the object of the invention is a method and a device for controlling a valve or a pump-nozzle device to create with the valve, the or a precise Actuation of the valve ensured.
- the invention is characterized by a method for controlling a valve with a valve actuator acting as a piezo actuator is formed, a valve member, a valve body and a valve seat.
- a valve actuator acting as a piezo actuator is formed, a valve member, a valve body and a valve seat.
- the Valve member from a position away from the valve seat in controlled the valve seat.
- the valve member from the position controlled from the valve seat into the valve seat becomes a signal characterizing the piezoelectric voltage detected.
- At least the first derivative of the piezo voltage characterizing signal is then determined.
- a closing time depends on the specifiable time and the Time of impact determined. The activation of the valve drive then takes place depending on the closing period.
- the valve a pump-nozzle device controlled accordingly.
- the pump-nozzle device has a pump that has a piston and a Working space has, a control unit, which has a drainage channel, the hydraulically coupled with the working space, and comprises a valve with a designed as a piezoelectric actuator Valve actuator, a valve member, a valve body, a Valve seat and a Ab horrraum which hydraulically decoupled is from the drain passage when the valve member is on the valve seat is present, and otherwise coupled to the drainage channel.
- the invention is based on the finding that when hitting of the valve member on the valve seat the course of the piezoelectric voltage characterizing signal a kink has and immediately after the kink a higher slope having.
- the at least first derivative of the signal only within one predetermined time window to an expected time of Impact on exceeding the predetermined threshold supervised. This has the advantage of less computational effort and at the same time a lower probability an incorrect determination of the time of impact due to interfering signals.
- the signal characterizing the piezo voltage is squared and then at least the first derivative of the squared Signals determined. This is based on the knowledge that the signal characterizing the piezoelectric voltage substantially has a root-shaped course and that's how the signal can be linearized by squaring and a higher Signal-to-noise ratio can be easily achieved.
- the second derivative of the squared signal is determined. This has the advantage that the characteristic kink of original signal then particularly well and easily recognized can be.
- the closing time is determined several times and a filtering subjected. This has the advantage of being such a very reliable one Value of closing time can be determined.
- an error is detected in the valve when the closing time period less than a second threshold or greater than is a third threshold.
- a driving time of the valve drive depends on the closing time and a set value of the closing time corrected.
- this takes place Correction additionally of one dependent on one Temperature characteristic of the temperature of the Valve and dependent on the piezo drive supplied electrical Energy. This is then an extremely precise driving ensured the valve.
- the predefinable time, to which the valve member is away from a position the valve seat is controlled in the valve seat, so selected is that the piston of the pump is in its top dead center and remains until the expected impact of the valve member the valve seat.
- the pump-nozzle device (FIG. 1) comprises a pump unit, a control unit and a nozzle unit.
- the pump-nozzle device is preferably used for supplying Fuel in the combustion chamber of a cylinder of an internal combustion engine.
- the internal combustion engine is preferably as a diesel engine educated.
- the internal combustion engine has an intake duct for drawing in air by means of gas inlet valves can be coupled with cylinders.
- the internal combustion engine further includes an exhaust tract via the exhaust valve controls the gases to be discharged from the cylinders dissipates.
- the cylinders are each associated with pistons, the each coupled via a connecting rod with a crankshaft are.
- the crankshaft is coupled to a camshaft.
- the pump unit comprises a piston 11, a pump body 12, a working space 13 and a pump return means 14, which is preferably designed as a spring.
- the piston 11 is when installed in an internal combustion engine with a Camshaft 16 coupled, preferably by means of a rocker arm, and is driven by this.
- the piston 11 is in a recess of the pump body 12 is guided and determined depending on its position, the volume of the working space 13.
- the pump return means 14 is configured and arranged that limited by the piston 11 volume of the working space 13 has a maximum value when on the piston 11 no external forces act, d. H. Forces that over the Coupling with the camshaft 16 are transmitted.
- the nozzle unit comprises a nozzle body 51 in which a nozzle return means 52, as a spring and possibly additionally as Damping unit is formed, and a nozzle needle 53 is arranged are.
- the nozzle needle 53 is in a recess of the Nozzle body 51 is arranged and is in the range of a needle guide 55 led.
- the nozzle needle 53 is located on a needle seat 54 and thus closes a nozzle 56, which is for feeding of the fuel into the combustion chamber of the cylinder of the internal combustion engine is provided.
- the nozzle unit is preferably, as shown, as inwardly opening nozzle unit educated.
- the nozzle needle 53 is light spaced toward the needle seat 54 and toward toward the nozzle return means 52 and thus gives the nozzle 56 free.
- fuel is in the Burning chamber of the cylinder of the internal combustion engine metered.
- the first or second state is taken depending on a balance of forces from the force generated by the nozzle return means 52 acts on the nozzle needle 53 and from this counteracting force caused by the hydraulic pressure in the Area of the needle heel 57 is caused.
- the control unit comprises an inlet channel 21 and an outlet channel 22.
- the inlet channel 21 and the outlet channel 22 are hydraulically coupled by means of a valve.
- the inlet channel 21 is from a low-pressure side port of the pump-nozzle device led to the valve.
- the drainage channel 22 is hydraulically coupled to the working space 13 and is led to the needle heel 57 and is hydraulically with the Nozzle 56 can be coupled depending on the condition of the nozzle needle 53 is taken.
- the valve comprises a valve member 231, preferably as so-called A-valve is formed, d. H. it opens to the outside against the flow direction of the fluid.
- the valve includes a Abschraum 232, which is hydraulically coupled with the inlet channel 21 and by means of the valve member 231 with a high pressure chamber is hydraulically coupled.
- the high pressure room is hydraulically coupled to the drainage channel 22.
- valve return means In the closed position of the valve member 231 is the Valve member 231 on a valve seat 234 of a valve body 237 on. Further, a valve return means is provided, which is arranged and designed so that it is the valve member 231 in an open position, d. H. spaced to the Valve seat 234 presses when by an actuator 24th acting on the valve member forces are less than that Forces through the valve return means on the valve member 231 act.
- the actuator 24 is a piezo stack educated.
- the actuator 24 is preferably by means of a transformer, which preferably amplifies the stroke of the actuator 24, coupled to the valve member 231. On the actuator 24 is preferably also a plug for receiving electrical contacts for controlling the actuator 24th intended.
- a device 60 for controlling the pump-nozzle device is provided, the corresponding control signals for the valve generated.
- valve member 231 In the open position of the valve member 231 is in one movement of the piston 11, the upward d. H. towards the way directed from the nozzle 56, fuel via the inlet channel 21 sucked towards the working space 13. As long as the valve member 231 during a subsequent downward movement of the Piston 11, d. H. directed towards the nozzle 56 Movement, still in its open position, will located in the working space 13 and the drain passage 22 Fuel over the valve back into the Ab bruiseraum 232 and possibly pushed back into the inlet channel 21.
- valve member 231 when in the downward movement of the piston 11, the valve member 231 is controlled in its closed position, is the in the working space 13 and thus also in the drainage channel 22 and located in the high-pressure chamber 233 fuel compressed, causing the pressure with increasing downward movement of the piston 11 in the working space 13, in the high-pressure chamber 233 and in the Drain channel 22 increases. According to the rising pressure in the Drain passage 22 also increases due to the hydraulic pressure caused force on the needle heel 57 in the direction an opening movement of the nozzle needle 53 to release the Nozzle 56 acts.
- the predefinable time is preferably so chosen that the piston is in its top dead center and remains until the expected impact of the valve member 231 on the valve seat 234. However, he can also within a Selected time range in which the piston is not in is located at its top dead center.
- This is preferably the piezo voltage V_INJ itself
- it can also be another characterizing the piezoelectric voltage Size, such as the capacity of the Piezo actuator or the current applied to the piezoelectric actuator or the charge of the piezoelectric actuator or the electrical Energy of the piezoelectric actuator.
- the piezo voltage V_INJ the values up to can assume about 150 V, by means of a voltage divider in transformed a predetermined voltage range and optionally subsequently filtered. Then done then an analog-to-digital conversion of the signal by means of a so-called sample and hold analog-to-digital converter with a very short sampling time of a few ⁇ sec.
- the thus obtained digital voltage values are preferably buffered and only after an expected impact of the valve member 231 further processed on its valve seat 234. by virtue of the known sampling rate of the analog-to-digital converter is then also a temporal assignment of the individual scanned Values possible.
- the sampled piezo voltage V_INJ preferably interpolated, resulting in a higher temporal resolution of the signal curve of the piezo voltage Reach V_INJ. This is preferably done by means of a Finite-impulse-response (FIR) filters.
- FIR Finite-impulse-response
- the piezo voltage V_INJ is squared. This corresponds to a linearization of the course of the piezoelectric voltage V_INJ, as these are essentially root-shaped Course has. Alternatively, however, it can also be squaring be omitted, which is indicated by the dashed arrow is.
- the first derivative of the Signal curve of the piezo voltage V_INJ determined. It takes place thus a differentiation according to the time.
- a second derivative of the waveform the piezo voltage V_INJ be determined.
- a block B11 then only the values of the derived Piezo voltage V_INJ selected within a predetermined time window at the expected time of Impact of the valve member 231 detected on the valve seat 234 were.
- the time window is preferably specified in this way that all known scatters of closing time are considered.
- a block B13 it is checked which of the derived Values of the piezo voltage V_INJ a predetermined value for the first time exceeds the first threshold SW1. Depends on this Value assigned time and the known beginning of the Control of the valve drive 24 is then in the block B13 determines the closing time T_CL.
- a block B15 is then plausibility, if the closing time T_CL is smaller than a given second Threshold or greater than a given third Threshold SW3.
- the second and third thresholds SW2, SW3 are chosen so that falling below or exceeding only in case of a fault of the valve is possible. Corresponding will then fall below or exceed diagnosed a fault of the valve in block B15.
- a block B17 the determined closing time T_CL subjected to a statistical evaluation. Prefers If the closing time T_CL is repeated several times, e.g. determined thirty times and then the mean and if necessary the standard deviation of the closing time obtained T_CL determined. Block B17 preferably gives the mean value T_CL_MV of the closing time period. Alternatively, however, can also the determined closing periods T_CL to others Filtered way, such as. by means of a sliding Averaging or a non-recursive filter.
- a correction value T_SOI_OFS for the activation time T_SOI the valve drive 24 is according to the block diagram of FIG 3 determined.
- a block B13 becomes dependent on a temperature TEMP, which is characteristic of the temperature of the Valve drive 24 and thus the piezoelectric actuator and a Valve drive 24 supplied energy E and depending on one Setpoint T_CL_SP of the closing time duration, a first correction value T_CL_COR1 determined.
- the first correction value T_CL_COR1 is an estimate that depends on the change in closing time from the temperature TEMP and the supplied electrical Energy E.
- the setpoint T_CL_SP of the closing time period is preferred given for given operating conditions, i. for a given temperature TEMP and supplied electrical Energy E. He is preferably for during operation the valve drive 24 on average prevailing temperature TEMP and the electrical energy supplied to it on average determined.
- the block B19 accordingly includes a corresponding one Model, by means of which then the first correction value T_CL_COR1 is determined.
- a second correction value T_CL_COR2 depending on the setpoint T_CL_SP and the mean T_CL_MV the closing time determined. This is preferably done by forming the difference of the setpoint T_CL_SP and the Mean value T_CL_MV of the closing time duration and multiply this difference with a predeterminable factor.
- a block B23 then becomes dependent on the first correction value T_CL_COR1 and the second correction value T_CL_COR2 Correction value T_SOI_OFS determined for the activation time T_SOI, preferably by forming the sum of the first and second correction value T_CL_COR1, T_CL_COR2.
- a block B25 then becomes dependent on the correction value T_SOI_OFS for the activation time T_SOI and one requested Time at which the valve member 231 on its valve seat 234, the triggering time T_SOI determined.
- Figures 4a to 4d show gradients plotted over time t.
- Figure 4a shows the time course of the squared piezoelectric voltage V_INJ.
- FIG. 4b shows the stroke CTRL_VL of the valve member 231.
- FIG. 4c shows the course of the pressure P_H in FIG Working space 13 of the pump.
- Figure 4d shows the time course the metered with the pump-nozzle device amount of fuel MFF.
- T_SOI the valve drive 24 with voltage
- the piezoelectric voltage V_INJ applied.
- the valve member 231 hits the valve seat 234.
- the slope of the substantially linear Course of the squared piezo voltage V_INJ takes in the Time t1 then jump.
- the pressure P_H in the workspace 13 of the pump begins to increase from time t1.
- the opening of the nozzle needle 53 reached required pressure and the injection process begins.
- the determination of the closing period takes place however, during a period during which the piston 11 is in its top dead center is. This has the consequence that the Course of the pressure P_H in the working space 13 substantially is constant and at low pressure level with the result that the metered amount of fuel MFF according to Figure 4c zero is.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
- Figur 1
- eine Pumpe-Düse-Vorrichtung mit einem Ventil und einer Vorrichtung zum Steuern des Ventils,
- Figur 2
- ein Blockdiagramm, das den Ablauf des Ermittelns einer Schließzeitdauer T_CL darstellt,
- Figur 3
- ein weiteres Blockdiagramm, das den Ablauf des Ermittelns eines Korrekturwert T_SOI_OFS des Ansteuerzeitpunkts T_SOI darstellt und
- Figuren 4a
- bis 4d zeitliche Verläufe der Piezospannung V_INJ, des Hubs CTRL_VL des Ventilglieds231, des Drucks P_H in dem Arbeitsraum 13 der Pumpe und der Einspritzmenge MFF.
- 11
- Kolben
- 12
- Pumpenkörper
- 13
- Arbeitsraum
- 14
- Pumpenrückstellmittel
- 16
- Nockenwelle
- 21
- Zulaufkanal
- 22
- Ablaufkanal
- 231
- Ventilglied
- 232
- Absteuerraum
- 234
- Ventilsitz
- 237
- Ventilkörper
- 24
- Ventilantrieb
- 51
- Düsenkörper
- 52
- Düsenrückstellmittel
- 53
- Düsennadel
- 54
- Nadelsitz
- 55
- Nadelführung
- 56
- Düse
- 57
- Nadelabsatz
- 60
- Vorrichtung zum Steuern einer Pumpe-DüseVorrichtung
- V_INJ
- Piezospannung
- SW1, SW2, SW3
- erster, zweiter, dritter Schwellenwert
- T_CL
- Schließzeitdauer
- T_CL_MV
- Mittelwert der Schließzeitdauer
- T_CL_SP
- Sollwert der Schließzeitdauer
- T_CL_COR1
- erster Korrekturwert (Schätzwert, Vorsteuerwert)
- T_CL_COR2
- zweiter Korrekturwert (Regelung)
- T_SOI
- Ansteuerzeitpunkt
- T_SOI_OFS
- Korrekturwert für den Ansteuerzeitpunkt
- TEMP
- Temperatur
- E
- elektrische Energie
- Ctrl_VL
- Hub des Ventilglieds
- P_H
- Druck in dem Arbeitsraum
- MFF
- Kraftstoffeinspritzmenge
Claims (13)
- Verfahren zum Steuern eines Ventils mit einem Ventilantrieb (24), der als Piezoaktor ausgebildet ist, mit einem Ventilglied (231), einem Ventilkörper (237) und einem Ventilsitz (234), bei demzu einem vorgebbaren Zeitpunkt das Ventilglied (231) von einer Position entfernt von dem Ventilsitz (234) in den Ventilsitz (234) gesteuert wird,während das Ventilglied (231) von der Position entfernt von dem Ventilsitz (234) in den Ventilsitz (234) gesteuert wird, ein die Piezospannung (V_INJ) charakterisierendes Signal erfasst wird,mindestens die erste Ableitung des die Piezospannung (V_INJ) charakterisierenden Signals ermittelt wird,der Zeitpunkt des Auftreffens des Ventilglieds (231) auf den Ventilsitz (234) erkannt wird, wenn die mindestens erste Ableitung des Signals einen vorgegebenen ersten Schwellenwert (SW1) überschreitet,eine Schließzeitdauer (T_CL) abhängig von dem vorgebbaren Zeitpunkt und dem Zeitpunkt des Auftreffens ermittelt wird unddie Ansteuerung des Ventilantriebs (24) dann abhängig von der Schließzeitdauer (T_CL) erfolgt.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die mindestens erste Ableitung des Signals nur innerhalb eines vorgegebenen Zeitfensters um einen erwarteten Zeitpunkt des Auftreffens des Ventilglieds (231) auf den Ventilsitz (234) auf das Überschreiten des vorgegebenen ersten Schwellenwerts (SW1) überwacht wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass das die Piezospannung (V_INJ) charakterisierende Signal quadriert wird und dann die mindestens erste Ableitung des quadrierten Signals ermittelt wird. - Verfahren nach Anspruch 3,
dadurch gekennzeichnet, dass die zweite Ableitung des quadrierten Signals ermittelt wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass bei dem ersten Überschreiten des ersten Schwellenwerts (SW1) auf den Zeitpunkt des Auftreffens des Ventilglieds (231) auf den Ventilsitz (234) erkannt wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass die Schließzeitdauer (T_CL) mehrfach ermittelt wird und einer Filterung unterzogen wird. - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass ein Fehler in dem Ventil erkannt wird, wenn die Schließzeitdauer kleiner ist als ein zweiter Schwellenwert (SW2) oder größer ist als ein dritter Schwellenwert (SW3). - Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass ein Ansteuerzeitpunkt (T_SOI) abhängig von der Schließzeitdauer (T_CL) und einem Sollwert (T_CL_SP) der Schließzeitdauer ermittelt wird. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, dass der Ansteuerzeitpunkt (T_SOI) zusätzlich abhängig von einer Temperatur (TEMP), die charakteristisch ist für die Temperatur des Ventils, und einer dem Ventilantrieb (24) zugeführten elektrischen Energie (E) ermittelt wird. - Verfahren zum Steuern einer Pumpe-Düse-Vorrichtung miteiner Pumpe, die einen Kolben (11) und einen Arbeitsraum (13) hat,einer Steuereinheit, die einen Ablaufkanal (22), der hydraulisch gekoppelt ist mit dem Arbeitsraum (13), und ein Ventil umfasst, mit einem als Piezoaktor ausgebildeten Ventilantrieb (24), einem Ventilglied (231), einem Ventilkörper (237), einem Ventilsitz (234) und einem Absteuerraum (232), der hydraulisch entkoppelt ist von dem Ablaufkanal (22), wenn das Ventilglied (231) an dem Ventilsitz (234) anliegt, und der ansonsten hydraulisch gekoppelt ist mit dem Ablaufkanal (22),bei dem das Ventil mit einem Verfahren nach einem der vorstehenden Ansprüche gesteuert wird.
- Verfahren nach Anspruch 10,
dadurch gekennzeichnet, dass bei dem der vorgebbare Zeitpunkt so gewählt wird, dass der Kolben (11) in seinem oberen Totpunkt ist und bleibt bis zum erwarteten Auftreffen des Ventilglieds (231) auf den Ventilsitz (234). - Vorrichtung zum Steuern eines Ventils mit einem Ventilantrieb (24), der als Piezoaktor ausgebildet ist, mit einem Ventilglied (231), einem Ventilkörper (237) und einem Ventilsitz (234), die Mittel aufweist,die zu einem vorgebbaren Zeitpunkt das Ventilglied (231) von einer Position entfernt von dem Ventilsitz (234) in den Ventilsitz (234) steuern,die während das Ventilglied (231) von der Position entfernt von dem Ventilsitz (234) in den Ventilsitz (234) gesteuert wird, ein die Piezospannung (V_INJ) charakterisierendes Signal erfassen,die mindestens die erste Ableitung des die Piezospannung (V_INJ) charakterisierenden Signals ermitteln,die den Zeitpunkt des Auftreffens des Ventilglieds (231) auf den Ventilsitz (234) erkennen, wenn die mindestens erste Ableitung des Signals einen vorgegebenen ersten Schwellenwert (SW1) überschreitet,die eine Schließzeitdauer (T_CL) abhängig von dem vorgebbaren Zeitpunkt und dem Zeitpunkt des Auftreffens ermitteln undden Ventilantrieb (24) dann abhängig von der Schließzeitdauer (T_CL) ansteuern.
- Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung miteiner Pumpe, die einen Kolben (11) und einen Arbeitsraum (13) hat,einer Steuereinheit, die einen Ablaufkanal (22), der hydraulisch gekoppelt ist mit dem Arbeitsraum (13), und ein Ventil umfasst, mit einem als Piezoaktor ausgebildeten Ventilantrieb (24), einem Ventilglied (231), einem Ventilkörper (237), einem Ventilsitz (234) und einem Absteuerraum (232), der hydraulisch entkoppelt ist von dem Ablaufkanal (22), wenn das Ventilglied (231) an dem Ventilsitz (234) anliegt, und der ansonsten hydraulisch gekoppelt ist mit dem Ablaufkanal (22),mit der Vorrichtung zum Steuern eines Ventils gemäß Anspruch 12.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003145226 DE10345226B4 (de) | 2003-09-29 | 2003-09-29 | Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit einem Ventil |
DE10345226 | 2003-09-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1519026A2 true EP1519026A2 (de) | 2005-03-30 |
EP1519026A3 EP1519026A3 (de) | 2006-10-25 |
EP1519026B1 EP1519026B1 (de) | 2010-12-29 |
Family
ID=34178011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040022133 Expired - Lifetime EP1519026B1 (de) | 2003-09-29 | 2004-09-17 | Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit einem Ventil |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1519026B1 (de) |
DE (2) | DE10345226B4 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008071532A1 (de) | 2006-12-12 | 2008-06-19 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffeinspritzventils |
WO2010023041A1 (de) * | 2008-08-25 | 2010-03-04 | Robert Bosch Gmbh | Verfahren zum betreiben einer kraftstoffeinspritzvorrichtung einer brennkraftmaschine |
WO2010133417A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Verfahren und steuergerät zum betreiben eines einspritzventils |
WO2010133414A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Verfahren zur erkennung des betriebszustands eines einspritzventils |
WO2017060076A1 (de) * | 2015-10-07 | 2017-04-13 | Continental Automotive Gmbh | Verfahren zur detektion eines nutzsignales |
DE102015104471B4 (de) * | 2014-04-01 | 2020-02-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Verfahren zum verbessern der genauigkeit der kraftstoffzufuhr, indem eigenschaften von kraftstoffeinspritzventilen erlernt und kompensiert werden |
CN113748272A (zh) * | 2019-04-25 | 2021-12-03 | 舍弗勒技术股份两合公司 | 用于对多个消耗器及冷却和/或润滑装置进行供应的具有泵和阀的液压系统的驱动方法以及液压系统 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005032087A1 (de) * | 2005-07-08 | 2007-01-18 | Siemens Ag | Verfahren und Vorrichtung zum Steuern eines Einspritzventils |
DE102006048979B8 (de) * | 2006-10-17 | 2017-02-23 | Continental Automotive Gmbh | Verfahren und Einspritzsystem zum Einspritzen eines Fluids |
DE102011075750B4 (de) * | 2011-05-12 | 2021-02-11 | Vitesco Technologies GmbH | Verfahren zum Ermitteln einer Position eines Verschlusselements eines Einspritzventils für eine Brennkraftmaschine |
DE102011082455B4 (de) | 2011-09-09 | 2014-02-13 | Continental Automotive Gmbh | Verfahren zum Überwachen einer Einspritzmenge eines Fluids sowie Einspritzsystem zum Einspritzen einer Einspritzmenge eines Fluids |
DE102012204278A1 (de) * | 2012-03-19 | 2013-09-19 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems und Kraftstoffeinspritzsystem mit Einspritzventil mit Regelung der Bewegung des Verschlusselementes |
US9074552B2 (en) | 2012-06-27 | 2015-07-07 | GM Global Technology Operations LLC | Fuel injector closing timing adjustment systems and methods |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999067527A2 (de) * | 1998-06-25 | 1999-12-29 | Siemens Aktiengesellschaft | Verfahren und anordnung zum steuern eines kapazitiven aktors |
EP1172541A1 (de) * | 2000-07-01 | 2002-01-16 | Robert Bosch GmbH | Piezoelektrischer Aktor eines Einspritzventils sowie Kraftstoffeinspritzsystem |
DE10146747A1 (de) * | 2001-09-22 | 2003-04-10 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
WO2003040534A2 (de) * | 2001-11-09 | 2003-05-15 | Volkswagen Mechatronic Gmbh & Co. | Einspritzanlage für eine brennkraftmaschine und zugehöriges betriebsverfahren |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2805175A1 (de) * | 1978-02-08 | 1979-08-09 | Bosch Gmbh Robert | Einrichtung zum erfassen des spritzbeginns eines einspritzventils |
DE3118425A1 (de) * | 1981-05-09 | 1982-12-09 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zum erfassen der den brennraeumen eines dieselmotors zugefuehrten kraftstoffmenge |
DE19835494C2 (de) * | 1998-08-06 | 2000-06-21 | Bosch Gmbh Robert | Pumpe-Düse-Einheit |
DE19930309C2 (de) * | 1999-07-01 | 2001-12-06 | Siemens Ag | Verfahren und Vorrichtung zur Regelung der Einspritzmenge bei einem Kraftstoffeinspritzventil mit Piezoelement-Aktor |
DE10024662B4 (de) * | 2000-05-18 | 2005-12-15 | Siemens Ag | Verfahren zum Betreiben eines Einspritzventils |
DE10143501C1 (de) * | 2001-09-05 | 2003-05-28 | Siemens Ag | Verfahren zum Ansteuern eines piezobetriebenen Kraftstoff-Einspritzventils |
-
2003
- 2003-09-29 DE DE2003145226 patent/DE10345226B4/de not_active Expired - Fee Related
-
2004
- 2004-09-17 DE DE200450012047 patent/DE502004012047D1/de not_active Expired - Lifetime
- 2004-09-17 EP EP20040022133 patent/EP1519026B1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999067527A2 (de) * | 1998-06-25 | 1999-12-29 | Siemens Aktiengesellschaft | Verfahren und anordnung zum steuern eines kapazitiven aktors |
EP1172541A1 (de) * | 2000-07-01 | 2002-01-16 | Robert Bosch GmbH | Piezoelektrischer Aktor eines Einspritzventils sowie Kraftstoffeinspritzsystem |
DE10146747A1 (de) * | 2001-09-22 | 2003-04-10 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
WO2003040534A2 (de) * | 2001-11-09 | 2003-05-15 | Volkswagen Mechatronic Gmbh & Co. | Einspritzanlage für eine brennkraftmaschine und zugehöriges betriebsverfahren |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008071532A1 (de) | 2006-12-12 | 2008-06-19 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffeinspritzventils |
CN101558227A (zh) * | 2006-12-12 | 2009-10-14 | 罗伯特·博世有限公司 | 用于运行燃料喷射阀的方法 |
JP2010512486A (ja) * | 2006-12-12 | 2010-04-22 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 燃料噴射弁の駆動方法 |
US8483933B2 (en) | 2006-12-12 | 2013-07-09 | Robert Bosch Gmbh | Method for operating a fuel injector |
CN101558227B (zh) * | 2006-12-12 | 2013-10-23 | 罗伯特.博世有限公司 | 用于运行燃料喷射阀的方法 |
WO2010023041A1 (de) * | 2008-08-25 | 2010-03-04 | Robert Bosch Gmbh | Verfahren zum betreiben einer kraftstoffeinspritzvorrichtung einer brennkraftmaschine |
WO2010133417A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Verfahren und steuergerät zum betreiben eines einspritzventils |
WO2010133414A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Verfahren zur erkennung des betriebszustands eines einspritzventils |
DE102015104471B4 (de) * | 2014-04-01 | 2020-02-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Verfahren zum verbessern der genauigkeit der kraftstoffzufuhr, indem eigenschaften von kraftstoffeinspritzventilen erlernt und kompensiert werden |
WO2017060076A1 (de) * | 2015-10-07 | 2017-04-13 | Continental Automotive Gmbh | Verfahren zur detektion eines nutzsignales |
CN113748272A (zh) * | 2019-04-25 | 2021-12-03 | 舍弗勒技术股份两合公司 | 用于对多个消耗器及冷却和/或润滑装置进行供应的具有泵和阀的液压系统的驱动方法以及液压系统 |
US11920645B2 (en) | 2019-04-25 | 2024-03-05 | Schaeffler Technologies AG &Co. KG | Actuation method for a hydraulic system having a pump and valves for supplying multiple consumers and a cooling and/or lubricating device, and hydraulic system |
Also Published As
Publication number | Publication date |
---|---|
EP1519026B1 (de) | 2010-12-29 |
EP1519026A3 (de) | 2006-10-25 |
DE10345226B4 (de) | 2006-04-06 |
DE502004012047D1 (de) | 2011-02-10 |
DE10345226A1 (de) | 2005-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4120055C2 (de) | Aufgeladene Brennkraftmaschine mit Abgasrückführung | |
EP1519026B1 (de) | Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit einem Ventil | |
EP1488088B1 (de) | Verfahren und vorrichtung zur detektion des einschlagzeitpunktes der ventilnadel eines piezo-steuerventils | |
EP2412954A1 (de) | Verfahren zur Motorbremsung | |
WO2012150298A1 (de) | Verfahren und vorrichtung zum steuern eines ventils | |
EP1704316B1 (de) | Verfahren und vorrichtung zum steuern eines ventils und verfahren und vorrichtung zum steuern einer pumpe-d se-vorrichtung mi t dem ventil | |
DE102010038779A1 (de) | Verfahren zum Betreiben einer Brennkraftmaschine mit mehreren Brennräumen und Brennkraftmaschine mit mehreren Brennräumen | |
DE19882042B4 (de) | Kontrollvorrichtung und Kontrollverfahren für eine nockengetriebene, elektronisch gesteuerte Pumpe-Düse-Einspritzeinheit | |
EP1704315B1 (de) | Verfahren zum steuern eines ventils und verfahren zum steuern einer pumpe-d se-vorrichtung mit einem ventil | |
DE102019202390A1 (de) | Verfahren zur Bestimmung einer Verzugszeit eines Ventils | |
EP1751414B1 (de) | Verfahren und vorrichtung zum steuern eines ventils | |
EP2633175A1 (de) | Verfahren zur überwachung einer adaption einer einspritzzeit eines einspritzventils einer brennkraftmaschine | |
DE10225911B3 (de) | Verfahren und Vorrichtung zum Messen und Regeln der Schließ- und Öffnungszeit eines Piezo-Steuerventils | |
EP1472454B1 (de) | Verfahren und vorrichtung zur detektion von betriebszuständen einer pumpe-düse-einheit | |
DE19930530B4 (de) | Vorrichtung und Verfahren zum Regeln der Einspritzung von Kraftstoff durch einen Kraftstoffinjektor in einer Brennkraftmaschine | |
WO2003091559A1 (de) | Vorrichtung und verfahren zur ansteuerung des piezo-aktuators eines steuerventils einer pumpe-düse-einheit | |
DE10310120B4 (de) | Verfahren zur Bestimmung der auf einen Piezoaktor ausgeübten Last sowie Verfahren und Vorrichtung zur Ansteuerung eines Piezoaktors eines Steuerventils einer Pumpe-Düse-Einheit | |
EP1700025B1 (de) | Verfahren und vorrichtung zum steuern einer brennkraftmaschine | |
DE102012223786B3 (de) | Verfahren zum Bestimmen einer Druckänderung im Brennraum einer Brennkraftmaschine und Brennkraftmaschine zum Durchführen des Verfahrens | |
WO2023160838A1 (de) | Verfahren zur ansteuerung eines elektromagnetisch ansteuerbaren gasventils, steuergerät | |
DE69524069T2 (de) | Hydraulisch betätigtes elektronisches kraftstoffeinspritzsystem | |
DE102017204881A1 (de) | Kraftstoffinjektor, Verfahren zum Betrieb eines Kraftstoffinjektors und Kraftstoffeinspritzsystem | |
WO2017118562A1 (de) | Schaltventil für ein kraftstoffeinspritzsystem, kraftstoffhochdruckpumpe für ein kraftstoffeinspritzsystem sowie ansteuerverfahren zum ansteuern eines schaltventils in einer kraftstoffhochdruckpumpe | |
WO2004057176A1 (de) | Pumpe-düse-einheit | |
WO2005061884A1 (de) | Pumpe-düse-vorrichtung |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK |
|
17P | Request for examination filed |
Effective date: 20070420 |
|
17Q | First examination report despatched |
Effective date: 20070601 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS VDO MECHATRONIK GMBH & CO. KG |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
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): DE FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 502004012047 Country of ref document: DE Date of ref document: 20110210 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502004012047 Country of ref document: DE Effective date: 20110210 |
|
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 |
|
26N | No opposition filed |
Effective date: 20110930 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502004012047 Country of ref document: DE Effective date: 20110930 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110917 |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101229 |
|
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: 20110917 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20180924 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20180930 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502004012047 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: 20200401 |
|
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: 20190930 |