WO2005014991A1 - Stellverfahren und stellvorrichtung für einen aktor - Google Patents
Stellverfahren und stellvorrichtung für einen aktor Download PDFInfo
- Publication number
- WO2005014991A1 WO2005014991A1 PCT/EP2004/051467 EP2004051467W WO2005014991A1 WO 2005014991 A1 WO2005014991 A1 WO 2005014991A1 EP 2004051467 W EP2004051467 W EP 2004051467W WO 2005014991 A1 WO2005014991 A1 WO 2005014991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- control
- charging
- valve
- controller
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 16
- 230000033228 biological regulation Effects 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims description 24
- 239000013256 coordination polymer Substances 0.000 claims description 23
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 23
- 238000004804 winding Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- 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
- 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
Definitions
- the invention relates to an actuating method and an actuating device for an actuator of a valve, in particular for a piezoelectric actuator of an injection valve for an internal combustion engine, according to the preambles of claims 1 and 8.
- piezoelectric actuators are used as actuators for injection valves, which enables highly dynamic control of the injection process in comparison to conventional solenoid valves.
- the stroke of such a piezoelectric actuator and thus the valve position of the associated injection valve depends on the state of charge, so that the piezoelectric actuator must be charged or discharged in accordance with the desired stroke.
- the fuel can be divided into several portions in one work cycle of the internal combustion engine.
- the actuator In order to be able to represent several pre-injections of very small amounts of fuel and subsequently a main injection and, if necessary, several post-injections in rapid succession in a piezoelectric actuator, the actuator must be charged or discharged very quickly to different charge states. Between the individual injections of a work cycle, there should be the possibility of not completely discharging the actuator, that is, to keep the valve in a minimally open position, in order to enable the actuator to respond more quickly the next time it is activated and to ensure pressure gradients in the injector to avoid, which would make a rapid succession of injections impossible.
- the actuator can be charged or discharged to a certain stroke via intermediate positions, in which the valve is partially open, in order to keep disturbing noise and vibrations as low as possible and to minimize signs of wear on the actuator or on the valve.
- a driver circuit with a transformer is known from DE 199 44 733 AI, the primary side of the transformer being connected to a supply voltage via a charging switch, while the secondary side is connected to the piezoelectric actuator via a discharge switch.
- the charge state of the piezoelectric actuator can be set in accordance with the desired position of the valve by means of a suitable pulse-width-modulated control of the charge switch and the discharge switch, so that the injection valve opens or closes at the predetermined times.
- an actuator characteristic curve is taken into account, which represents a relationship between the charge applied to the actuator and the stroke of the actuator.
- the object of the invention is therefore to precisely control piezoelectric injection valves one after the other and in rapid succession on any strokes in order to enable optimal injection sequences. It should be possible. To achieve these strokes over any control paths to Ge ⁇ noise emissions, to minimize vibration and wear.
- the invention is based on the physical knowledge that an actuator characteristic curve can be used not only when charging the piezoelectric actuator, but also for discharging, the two actuator characteristic curves being connected via the system hysteresis. This makes it possible to directly control any other valve position from any valve position. To make this possible, the actuator characteristics and the hysteresis of the actuator must be known exactly in order to regulate the control. The invention makes use of the knowledge that the actuator characteristics assumed by the control and the actual hysteresis can change during operation.
- the control process of the invention charges or discharges the gate Ak ⁇ to different charge states, each corresponding to a valve position.
- the charging or discharging is controlled in accordance with a predefined control behavior in accordance with a predefined setpoint value for the charge state.
- the control behavior is regulated as a function of a controlled variable that reflects the charge state of the actuator and / or the valve position.
- the control behavior can in principle be regulated as a function of at least one controlled variable, the above-mentioned variables being only examples. Control in combination with various other control variables is also conceivable.
- the variables determined as part of the regulation are preferably compared with a target value.
- the deviation of the measured valve position from the target position that is, the deviation from the target value of the last charge / discharge process, can be used to adapt the parameters of the actuator characteristics used to the physical properties of the actuator, and also the target / actual deviation be compensated for during the next loading / unloading process.
- the control variable is preferably determined in a control pause between two successive charges or discharges. Any possible waiting time between activating different charge states is conceivable as a suitable time. This is advantageous because it means that the control variable is not determined in the time-critical area of the control. Exact measurement may be difficult during high speed control.
- the control behavior is advantageously also set in a control pause between two successive charges or discharges. As a result, a desired charge state can be controlled at a very high speed, since no control is necessary during the control. In a control pause, the control behavior, in particular the actuator characteristic and the hysteresis, can be recalculated in the time available.
- the actuating method is designed so that the actuator can also be charged and / or discharged to charge states which correspond to a partially open valve position. With partial opening of the valve, pre-injections can be carried out.
- the flow-dynamic processes during the injection process can also be optimized by such a stepped opening or closing of the injection valve.
- the voltage at the actuator or the charge of the actuator are preferably used as control variables. These quantities can be determined in different ways. In this way, the actuator voltage can be tapped directly or measured relative to a reference level if the actuator is terminated with a resistance to ground.
- the charge of the actuator can be obtained, for example, from the integral of the applied current surges, whereby both charging and discharging currents have to be taken into account.
- variables other than controlled variables are also conceivable, for example the temperature of the actuator.
- the control behavior during charging is advantageously determined by a predetermined charging characteristic.
- the charging characteristic curve can represent, for example, a relationship between the charge to be applied and the charging time. The larger the charge to be applied, the longer the charging time for pulses of constant frequency. This relationship may not be linear if, for example, the strength of the current surges decreases with increasing actuator charge.
- the charging characteristic curve can also represent a relationship between the charge to be applied and the number of pulses with which the actuator is charged, although other relationships can also be useful.
- the same also applies to the discharge processes, which are preferably determined by one or more different discharge characteristics. This enables the control of desired valve positions with high and adjustable speed.
- the charging / discharging process can advantageously be set over time in a charging / discharging curve.
- the valve accelerates relatively slowly at the beginning and brakes relatively slowly at the end of the loading process, but is moved at high speed in between.
- variable speeds via the charging / discharging process can preferably be controlled with a pulse width modulation of the charge pulses. This can serve to avoid high pressure gradients.
- Different charging curves can also be used for different charging / discharging processes.
- the noise emission, vibration excitation and wear during operation can be reduced by a suitable choice of the shapes of the charging curves.
- the charging / discharging characteristic curves, the actuator characteristic curves, the hysteresis and the charging curves can be stored in a memory unit so that they can be called up.
- the control can be regulated by changing the slope of the charging / discharging characteristic. This could mean, for example, that for a certain charge to be applied, according to a certain path, more charge is applied per pulse. This can advantageously be set with pulse width modulation of the current surges. Analogously, the actuator characteristics and the charging curves can be varied.
- the control behavior can also be determined by the charging time and / or discharging time of a charging / discharging process. If, for example, the actuator is charged with pulses of the same strength at a constant frequency, an increase in the charging time corresponding to an increase in the number of pulses applied per charging process can set a higher charge that is applied in one process. By shortening the charging time, the applied charge is fertilization of a charging process is reduced. The same applies to the unloading process.
- others also correspond to the idea of the invention. In particular, combinations of the above-mentioned control options can be used.
- external measurement variables for the control are also recorded.
- External measured variables are used here to denote those measured variables which lie outside the area of the actuator with the associated driver circuit. This can be, for example, the pressure at the injector or another measured variable from the area of the internal combustion engine. Since the pressure at the valve can influence the actuator characteristic curve, it is advantageous if the control of the actuator is controlled taking this variable into account.
- other controlled variables are also conceivable.
- the coolant temperature of the internal combustion engine or the oil temperature of the internal combustion engine is advantageously taken into account as an external measurement variable when regulating the control.
- the actuating method includes an actuating device according to the invention for the controlled charging and / or discharging of an actuator of a valve to predefined charge states with a predefined control behavior.
- the actuating device preferably has a controller which is connected on the input side to the actuator or the valve, the controlled variable representing the charge state of the actuator and / or the valve position. In this way, for example, target / actual deviations can be determined and used for the control.
- the controller preferably has a storage unit in which previous charging processes and deviations are stored so that information from previous charging or discharging processes can also be taken into account in the control.
- a controller which uses one of the determined controlled variables and / or the target / actual deviation of a controlled variable as an input variable, is advantageously superimposed on the control of the charging processes.
- the controller preferably uses control breaks to discontinuously record the controlled variable and / or to discontinuously set the control behavior.
- the actuating method according to the invention with the associated actuating device is particularly advantageously suitable for pump-nozzle injection systems, but the invention can also be implemented with common rail injection systems. In addition, the invention is also applicable to gasoline direct injection (HPDI - High Pressure Direct Injection).
- HPDI gasoline direct injection
- FIG. 1 shows a circuit diagram of a conventional driver circuit for electrically actuating a piezo actuator.
- FIGS. 2a-2c show three exemplary control diagrams for the control unit from FIG. 1 and FIG. 3 the control method according to the invention as a flow chart.
- the driver circuit shown in FIG. 1 is used for the electrical control of piezoelectric actuators of injection valves of an internal combustion engine.
- a single actuator CP is shown here, although in a multi-cylinder internal combustion engine there are several actuators corresponding to the number of combustion chambers.
- the actuators, not shown, are constructed identically and connected in parallel to the actuator CP, as indicated by the dashed lines.
- the actuator CP is - like the other actuators (not shown) for the other combustion chambers of the internal combustion engine - connected in series with a selection switch 1 and a resistor R1, the selection switch 1 consisting of a parallel connection of a switching element S1 and a diode Dl.
- the selection switch 1 makes it possible to select one of the actuators for a charging or discharging process in that the respective switch S1 switches through while the corresponding switches for the other actuators disconnect.
- Vc 12V by the motor vehicle electrical system.
- the invention can also be used in a motor vehicle electrical system with a mains voltage of 42V.
- the primary winding Wl is connected to the voltage converter 2, while the secondary winding is connected to the actuator CP.
- the primary winding W1 of the transformer 3 is connected in series with a resistor R2 and a parallel circuit consisting of a diode D2 and a charging switch S2.
- the charging switch S2 is activated, for example, with a predetermined frequency and a duty cycle in pulse mode with a predetermined number of pulse-width-modulated signals at the predetermined charging voltage.
- the charging switch S2 can also be controlled, for example, with a variable frequency.
- the current through the primary coil W1 rises and is interrupted at a predetermined point in time by opening (non-conducting control) the charging switch S2.
- a pulsed voltage flows through the secondary winding W2 at a current corresponding to the turns ratio W2 / W1, which is smoothed by a capacitor C2, and charges the actuator CP with each current pulse until finally after the predetermined number of Pulsing a predetermined actuator voltage is approximately reached.
- the secondary circuit is closed when selector CP is loaded using selector switch 1.
- the secondary winding W2 of the transformer 3 is connected in series with a resistor R3 and a parallel circuit comprising a diode D3 and a switch S3.
- the discharge of the actuator CP also takes place in that the discharge switch S3 is controlled in a conductive and non-conductive manner, as a result of which the actuator voltage drops.
- the current flows from the actuator CP via the secondary winding W2, the discharge switch S3 and the selection switch 1 back to the actuator CP.
- the discharge switch S3 is opened, part of the discharge energy is transferred to the primary side of the transformer 3 and stored back in the charging capacitor C1.
- the primary circuit closes via diode D2.
- the selection switch 1, the charging switch S2 and the discharging switch S3 are controlled by a control unit 4, which is shown only schematically here.
- control unit 4 takes into account the charging current, the discharge current, the actuator current, the actuator voltage, the primary-side voltage and external control variables such as the oil temperature Toi and the coolant temperature T Tühifiüsstechnik - Connections on the voltage side of the resistors R1, R2 or R3 and on the voltage connections of the primary winding W1 or the secondary winding W2 and with sensors for determining the other variables mentioned above.
- FIGS. 2a to 2c show exemplary simple embodiments of the control circuit of the control unit 4 from FIG. 1.
- the controller 5 receives a setpoint S SOJI for the actuator position, which corresponds to a valve position.
- the control unit charges or discharges the actuator 6 via the driver circuit
- FIG. 1 with a predetermined charging characteristic according to the setpoint S S oi ⁇ •
- the controller 5 in Figure 2a uses an actuator characteristic that represents a relationship between the path and the load to be applied and a charging characteristic that a relationship between the charge to be applied and the Charging time T ⁇ , a do represents.
- the actuator 6 After the charging / discharging process, the actuator 6 reaches the actuator position S ⁇ st , which corresponds approximately to the specification Ss o ii.
- the difference ⁇ S between Ss o ii and S ⁇ s is used by a controller 7 to adjust parameters of the control 5, in particular to adapt the actuator characteristic curve used to the determined actuator behavior.
- the same predetermined actuator path is then in one of the following charging / Unloading operations are controlled with a different charge and accordingly with a different charging time T La de.
- FIG. 2b Another simple control loop is shown in FIG. 2b. It largely corresponds to that of FIG. 2a, with the difference that the controller 5 'uses a charging characteristic here, which has a relationship between the number n of pulses with which the actuator 6' is controlled during a charging / discharging process and the predetermined one Represents charge.
- the actuator 6 ′′ is charged or discharged using pulse-width-modulated current surges.
- the controller 1 ′′ receives pulse-width-modulated current surges.
- an input for an external sensor signal is shown here as an example.
- the controller 7 ′′ takes account of the control of the Control also the oil temperature T 0 ⁇ of the vehicle containing the control unit.
- FIG. 3 contains a schematic flow diagram of the actuating method according to the invention.
- a setpoint S So ⁇ is specified for the valve position.
- the position S ⁇ _ L actually approached by the valve is determined directly or from another variable, for example the actuator charge.
- the actuating error is determined by comparing the setpoint S So ⁇ with the actual value S ⁇ st . This positioning error is used to re-regulate the control behavior of the control unit. External control variables can also be taken into account the. The newly controlled control behavior affects a new setpoint Ss o ii 'the next time the actuator CP, 6, 6 r , 6''is charged or discharged.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04766199A EP1651851A1 (de) | 2003-08-08 | 2004-07-13 | Stellverfahren und stellvorrichtung für einen aktor |
US10/567,627 US20060255302A1 (en) | 2003-08-08 | 2004-07-13 | Adjustment method and adjustment device for an actuator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10336606A DE10336606B4 (de) | 2003-08-08 | 2003-08-08 | Stellverfahren und Stellvorrichtung für einen Aktor |
DE10336606.7 | 2003-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005014991A1 true WO2005014991A1 (de) | 2005-02-17 |
Family
ID=34112073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/051467 WO2005014991A1 (de) | 2003-08-08 | 2004-07-13 | Stellverfahren und stellvorrichtung für einen aktor |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060255302A1 (de) |
EP (1) | EP1651851A1 (de) |
DE (1) | DE10336606B4 (de) |
WO (1) | WO2005014991A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103502614A (zh) * | 2011-05-12 | 2014-01-08 | 大陆汽车有限公司 | 用于喷射阀的控制方法和喷射系统 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004015045B4 (de) * | 2004-03-26 | 2015-03-12 | Daimler Ag | Verfahren zur Ermittlung der Position eines beweglichen Verschlusselementes eines Einspritzventils |
DE102005007327B4 (de) * | 2005-02-17 | 2010-06-17 | Continental Automotive Gmbh | Schaltungsanordnung und Verfahren zum Betreiben einer Injektoranordnung |
DE102005010435A1 (de) * | 2005-03-08 | 2006-09-14 | Conti Temic Microelectronic Gmbh | Verfahren und Schaltungsanordnung zur Strom- und Ladungsregelung eines piezoelektrischen Kraftstoff-Injektors |
DE102007005360B3 (de) * | 2007-02-02 | 2008-07-24 | Siemens Ag | Verfahren und Vorrichtung zum Betreiben einer Fluidzumessvorrichtung |
DE102010021448A1 (de) * | 2010-05-25 | 2011-12-01 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Regelung der elektrischen Polarisation eines piezoelektrischen Aktuators |
DE102010022269B4 (de) * | 2010-05-31 | 2019-08-01 | Continental Automotive Gmbh | Adaptionsverfahren eines positionsgeregelten Injektors |
DE102012214565B4 (de) * | 2012-08-16 | 2015-04-02 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben eines Einspritzventils |
DE102014212377B4 (de) * | 2014-06-27 | 2016-07-21 | Continental Automotive Gmbh | Verfahren zur Bestimmung eines Zustandes eines Einspritzventils |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19841460A1 (de) * | 1998-09-10 | 2000-03-16 | Siemens Ag | Verfahren und Vorrichtung zum Ansteuern eines kapazitiven Stellglieds |
DE19938037A1 (de) * | 1998-08-12 | 2000-05-11 | Hitachi Ltd | Diagnose-System für einen Motor |
US6148791A (en) * | 1993-12-28 | 2000-11-21 | Hitachi, Ltd. | Apparatus for and method of controlling internal combustion engine |
EP1164271A2 (de) * | 2000-05-16 | 2001-12-19 | Nissan Motor Co., Ltd. | Steuerung der mehrfachen Einspritzung eines selbstgezündeten Benzinmotors |
US20020011762A1 (en) * | 1999-01-29 | 2002-01-31 | Rolf Klenk | Device for controlling a piezoelement injection valve |
US6563252B2 (en) * | 1999-09-17 | 2003-05-13 | Siemens Aktiengesellschaft | Circuit and method for driving at least one capacitive actuator |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4325904C2 (de) * | 1993-08-02 | 1995-07-20 | Daimler Benz Ag | Für eine Dieselbrennkraftmaschine vorgesehene Kraftstoffeinspritzanlage mit einer den Kraftstoff fördernden Hochdruckpumpe in eine gemeinsame Versorgungsleitung (Common-Rail) für alle Einspritzdüsen |
DE4422552C1 (de) * | 1994-06-28 | 1995-11-30 | Daimler Benz Ag | Verfahren zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine |
DE19652807C2 (de) * | 1996-12-18 | 2002-08-29 | Siemens Ag | Verfahren und Vorrichtung zum Ansteuern eines kapazitiven Stellgliedes |
DE19709715A1 (de) * | 1997-03-10 | 1998-05-20 | Siemens Ag | Vorrichtung und Verfahren zum Ansteuern wenigstens eines kapazitiven Stellgliedes |
US6079641A (en) * | 1998-10-13 | 2000-06-27 | Caterpillar Inc. | Fuel injector with rate shaping control through piezoelectric nozzle lift |
DE19921456A1 (de) * | 1999-05-08 | 2000-11-16 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines piezoelektrischen Aktors |
DE19958262B4 (de) * | 1999-12-03 | 2007-03-22 | Siemens Ag | Verfahren und Vorrichtung zum Aufladen eines piezoelektrischen Aktors |
DE10025579A1 (de) * | 2000-05-24 | 2001-12-06 | Siemens Ag | Verfahren und Vorrichtung zum Ansteuern eines kapazitiven Stellgliedes |
DE10063080B4 (de) * | 2000-12-18 | 2006-12-28 | Siemens Ag | Aktorsteuerung und zugehöriges Verfahren |
DE10114421B4 (de) * | 2001-03-23 | 2009-04-09 | Conti Temic Microelectronic Gmbh | Verfahren zum Steuern eines kapazitiven Stellglieds und Schaltungsanordnung zur Durchführung des Verfahrens |
DE10213875B4 (de) * | 2002-03-27 | 2006-12-28 | Siemens Ag | Verfahren und Vorrichtung zum Ansteuern wenigstens eines Piezoaktors |
-
2003
- 2003-08-08 DE DE10336606A patent/DE10336606B4/de not_active Expired - Fee Related
-
2004
- 2004-07-13 US US10/567,627 patent/US20060255302A1/en not_active Abandoned
- 2004-07-13 EP EP04766199A patent/EP1651851A1/de not_active Withdrawn
- 2004-07-13 WO PCT/EP2004/051467 patent/WO2005014991A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6148791A (en) * | 1993-12-28 | 2000-11-21 | Hitachi, Ltd. | Apparatus for and method of controlling internal combustion engine |
DE19938037A1 (de) * | 1998-08-12 | 2000-05-11 | Hitachi Ltd | Diagnose-System für einen Motor |
DE19841460A1 (de) * | 1998-09-10 | 2000-03-16 | Siemens Ag | Verfahren und Vorrichtung zum Ansteuern eines kapazitiven Stellglieds |
US20020011762A1 (en) * | 1999-01-29 | 2002-01-31 | Rolf Klenk | Device for controlling a piezoelement injection valve |
US6563252B2 (en) * | 1999-09-17 | 2003-05-13 | Siemens Aktiengesellschaft | Circuit and method for driving at least one capacitive actuator |
EP1164271A2 (de) * | 2000-05-16 | 2001-12-19 | Nissan Motor Co., Ltd. | Steuerung der mehrfachen Einspritzung eines selbstgezündeten Benzinmotors |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103502614A (zh) * | 2011-05-12 | 2014-01-08 | 大陆汽车有限公司 | 用于喷射阀的控制方法和喷射系统 |
US9651009B2 (en) | 2011-05-12 | 2017-05-16 | Continental Automotive Gmbh | Control method for an injection valve and injection system |
Also Published As
Publication number | Publication date |
---|---|
DE10336606A1 (de) | 2005-03-03 |
DE10336606B4 (de) | 2007-01-25 |
US20060255302A1 (en) | 2006-11-16 |
EP1651851A1 (de) | 2006-05-03 |
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