EP1508690A1 - Verfahren und Vorrichtung zum Positionieren eines piezoelektrischen Aktors - Google Patents
Verfahren und Vorrichtung zum Positionieren eines piezoelektrischen Aktors Download PDFInfo
- Publication number
- EP1508690A1 EP1508690A1 EP04103543A EP04103543A EP1508690A1 EP 1508690 A1 EP1508690 A1 EP 1508690A1 EP 04103543 A EP04103543 A EP 04103543A EP 04103543 A EP04103543 A EP 04103543A EP 1508690 A1 EP1508690 A1 EP 1508690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- voltage
- injection valve
- piezoelectric
- distance
- 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 abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 66
- 239000007924 injection Substances 0.000 claims abstract description 66
- 230000001419 dependent effect Effects 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000002105 tongue Anatomy 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/161—Means for adjusting injection-valve lift
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/167—Means for compensating clearance or thermal expansion
Definitions
- the invention relates to a method for positioning a piezoelectric actuator with respect to an actuator of a Injection valve according to the preamble of patent claim 1. Furthermore, the invention relates to a device for positioning a piezoelectric actuator with respect to a Actuator of an injection valve according to the preamble of Patent claim 4.
- a setting element is used, with which the actuator relative to the actuator displaceable is. In this way, an adjustment of the piezoelectric Actuator relative to the actuator except for some Micrometer can be achieved exactly.
- From DE 101 50 786 A1 is a generic method and a generic device for automatic adjustment known from injectors.
- the setting is made via a precise adjustment of the distance between the actuator and a lever element.
- the injection valve is first in the correct position provided in a measuring and setting station and a high pressure port with a pressure generating device and via an electrical connection device with an electrical signal generating device coupled. Thereafter, the adjusting element of the injection valve twisted so that the injection valve at a certain Position of the adjustment an injection process starts.
- the described method and described Device will inject all the injectors set the same setting parameters.
- the object of the invention is to provide a method and to provide a device with which a more accurate adaptation the distance between actuator and actuator of the injector is possible.
- the object of the invention is achieved by the method according to claim 1 and by the device according to claim 4 solved.
- An advantage of the method is that the piezoelectric Actuators independent of different elongation characteristics depending on the applied voltage positioned at the same distance to the actuator become. This is the idle stroke for all piezoelectric actuators set equal. This ensures that no actuation of the actuator by an elongation of the piezoelectric Actors by temperature changes is possible.
- the constant Leerhübe the different Injectors a constant, defined injection behavior the injectors specified.
- the constant Distances between the piezoelectric actuators and the Actuators adjusted by the fact that during the adjustment a piezoelectric actuator one for the piezoelectric Actor individual elongation characteristics is detected and dependent of which an individual tension for positioning the piezoelectric actuator is used.
- voltage could also be a distance measurement between made the piezoelectric actuator and the actuator become.
- FIG. 1 shows the structure of an adjusting device 100 which used for automatic adjustment of injectors becomes.
- the adjusting device 100 has a first handling device 102, which has a first holder 103 and a second bracket 104.
- the two brackets 103, 104 serve to hold a preassembled injection valve 101, in which the distance between the piezoelectric Actuator and an actuator of the piezoelectric actuator set shall be.
- a closing member of a Servo valve arranged, which is a drain of a control chamber controls.
- the control chamber is connected to an inlet. Depending on the position of the closing member of the Pressure in the control chamber is set.
- the injection needle In Dependence of the pressure in the control chamber in an open position or is movable into a closed position.
- the injection needle gives injection holes for dispensing free of fuel.
- In the closed position closes the Injection needle the injection holes and there will be no fuel discharged from the injection valve.
- the two brackets 103, 104 are on a turntable 102a attached, which can be rotated by a drive 105. On this way, the injection valve 101 by a 180 ° rotation of the turntable 102a are put in place the injection valve to a second handling device 106 is transferred.
- the second handling device 106 includes a second turntable 106a having a first injector receptacle 107 and a second injection valve receptacle 108 has.
- the second handling device 106 further comprises a rotary unit 109, with which the second Turntable 106a can be rotated. At a 180 ° turn of the second turntable 106a becomes one to the second Handling device 106 transferred injector in the correct position provided in the measuring and adjustment station.
- the Adjusting device 100 further includes a holding device 114, a high pressure port 110, an electrical connection device 111 and a screw 112 on. With the holding device 114 can be provided in the correct position Injection valve 111 are fixed in position and thus accidental slippage of the injector 101 are prevented.
- the high pressure port 110 is used the coupling of the correct position provided injection valve 101 with a pressure generating device, not shown.
- the electrical connection device 111 serves the electrical coupling of the piezoelectric actuator of the correct position provided injection valve 101 with a control unit 200. The electrical contact takes place via contact tongues, in a plug housing of the injection valve 101 are formed.
- the high pressure port 110 and the electrical Connecting device 111 are along its longitudinal axis slidably mounted and can by means of a not shown pneumatic drive along the longitudinal direction to be moved.
- the holding device 114, the correct position provided injection valve 101 fixed in position is coupled to a drive 115.
- the holding device 114 which according to the here shown Embodiment has an open-end wrench, be moved in the direction of the injection valve 101.
- the screwing device 112 is provided with a torque measuring device 113 coupled, according to the embodiment shown here having a torque measuring disc.
- the Screwing device 112 and the torque measuring device 113th can together by means of a vertical drive 120 in vertical Be moved direction.
- the actual adjustment the adjusting element of the injection valve is characterized that the torque measuring device 113 and the screwing device 112 are rotated together about an axis parallel extends to the longitudinal direction of the injection valve.
- the Rotation of the screwing device 112 takes place via a Drive 119, via a gear 118, a rack 117th is coupled to a gear 116 which is connected to the torque measuring device 113 is connected.
- the adjustment device 100 further includes a series of plates and superstructures for cohesion, for statics and for the mechanical stability of the entire adjustment device required are. These include, for example, a Base plate 130, a base plate assembly 131, and a structure 132 for the first handling device 105.
- injection valve 101 for example, from a conveyor belt to the first Handing over the handling device 102.
- the first handling device 102 becomes the injection valve 101 is brought to a position at which the injection valve is taken over by the second handling device 106.
- the injection valve 101 is in the correct position provided in the measuring and setting station. After that will the injection valve 101 fixed by the holding device 114 moved laterally to the injection valve 101 and is blocked.
- the holding device 114 has according to the here illustrated embodiment of the invention is not a illustrated fork wrench, with the injection valve 101 is fixed in a lower section.
- the injection valve 101 is not further with one in the figure 1 illustrated gripping device fixed, which is also the shape a fork wrench and at an upper portion of the injection valve 101 attacks. Both by the Holding device 114 as well as by the not shown Gripping device can do that when adjusting the adjustment the injection valve 101 occurring torque be compensated.
- both the high pressure port 110 and the electrical Connecting device 111 to the injection valve 101 approached.
- About the high pressure port 110 is the Injection valve 101 with a pressure generating device, not shown coupled and fuel with a pressure supplied by about 40 bar.
- With the electrical connection device 101 becomes the piezoelectric actuator 210 of the injection valve with the electrical connection device 111 coupled.
- the screwing 112 the one centric over the injection valve 101 stored open-end wrench has, pneumatically by means of the vertical drive 120 after drove down.
- the fork wrench looks for the Wrench surfaces of the adjusting element 220 ( Figure 2), the in Form a hollow screw or a nut is formed and the injection valve 101 surrounds.
- the Screwing device 112 driven by a toothed drive, the drive 119, the gear 118, the rack 117 and the gear 116 includes.
- the attacking on the adjustment Torque is provided by the torque measuring device 113 recorded.
- the voltage applied to the piezoelectric actuator Voltage is set by the controller 200 and is therefore also known.
- the controller 200 is with a Memory 260 connected in which the voltages are stored.
- the adjustment of the injection valve 101 is as long adjusted, d. H. the actuator 210 closer to the actuator 230 moved up to a certain position of the adjustment 220, which is a certain distance between a is not energized actuator 210 and the actuator 230, the injection valve 101 starts an injection process. There falls over the high pressure port 110 to the injection valve applied pressure. The pressure drop is detected and together with the values for the adjoining the adjusting element Torque for the voltage applied to the piezoelectric actuator Tension and for the angular position of the adjusting element stored in the memory 260 of the controller 200.
- FIG. 2 shows a schematic representation of a section the injection valve 101, wherein the position of the piezoelectric actuator 210 with respect to the actuator 230 is shown.
- the piezoelectric actuator 210 is shifted in the direction of the actuator 230.
- FIG. 2 shows the piezoelectric actuator 210 in the de-energized state.
- piezoelectric actuators 210 are for the Setting the idle stroke, d. H. the distance between the piezoelectric actuator 210 in the de-energized state and the Actuator 230 for the described method individual Voltage values used.
- FIG. 3 shows a schematic Diagram in which length change curves (stroke) in ⁇ m in Dependence of the applied voltage in volts for two various piezoelectric actuators P1, P2 shown are. From the diagram of Figure 3 it can be seen that the Length change (stroke) of the first piezoelectric actuator P1 per applied voltage voltage is greater than the change in length (Hub) of the second piezoelectric actuator P2. Consequently must for the achievement of a second stroke S2 a first Voltage U1 to the first piezoelectric element P1 and a second voltage U2 to the second piezoelectric element P2 be created. The first voltage U1 is smaller than that second voltage U2. The first voltage U1 and the second Voltage U2 is read from the acquired measurement diagram and for the described adjustment of the piezoelectric Actuators for setting a desired idle stroke used.
- the third voltage U3 applied and thereby resulting fourth Length change S4 detected. From the third tension and the fourth change in length S4 is in a linear approach the change in length in microns per volt calculated and the achievement the voltage required for the second change in length S2. Thus, for a more precise positioning of the piezoelectric actuator required individual voltage due of a single measuring point. This is it is not necessary, the whole shown in Figure 3 Characteristic curve for the piezoelectric actuators to capture.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims (4)
- Verfahren zum Einstellen eines Abstandes zwischen einem piezoelektrischen Aktor (210) und einem Stellglied (230) eines Einspritzventils (101), insbesondere einem Stellglied (230) zur Steuerung der Einspritzung, wobei der piezoelektrische Aktor (210) mit einer definierten Spannung angesteuert wird, wobei der Aktor (210) so weit an das Stellglied (230) angenähert und in dieser Position befestigt wird, bis der Aktor (210) im bestromten Zustand das Stellglied (230) in eine Zielposition bewegt,
dadurch gekennzeichnet, dass der Aktor (210) abhängig von seiner individuellen spannungsabhängigen Längungscharakteristik mit einer für den piezoelektrischen Aktor (210) individuellen Spannung beaufschlagt wird, um für verschiedene Aktoren einen annähernd gleichen Abstand im unbestromten Zustand des Aktors (210) zwischen dem Aktor (210) und dem Stellglied (230) einzustellen. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass für den Aktor (210) eine Längenänderungskurve in Abhängigkeit von der angelegten Spannung erfasst wird, und dass aus der Längenänderungskurve die Spannung ermittelt wird, die für eine Längung des Aktors (210) um den Abstand benötigt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass für den Aktor (210) eine Längenänderung in Abhängigkeit von einer Spannung erfasst wird, dass die Spannung so gewählt ist, dass sich der Aktor annähernd so lang ausdehnt, wie für den einzustellenden Abstand zwischen Aktor (210) und Stellglied (230) benötigt wird, dass die Längenänderung gemessen wird, und dass abhängig von der Längenänderung und der angelegten Spannung die für den Aktor (210) und die für eine Längung des Aktors (210) um den Abstand benötigte Spannung berechnet wird.
- Vorrichtung zum Positionieren eines piezoelektrischen Aktors (210) auf einen vorgegebenen Abstand zu einem Stellglied (230) eines Einspritzventils (101), wobei eine Halterung (114) zum Halten des Einspritzventils (101) vorgesehen ist, wobei ein Anschluss (110) für eine Kraftstoffleitung des Einspritzventils vorgesehen ist, wobei ein zweiter Anschluss (111) und ein Steuergerät (200) zum Ansteuern des piezoelektrischen Aktors (210) vorgesehen ist, wobei das Steuergerät (210) mit einem Speicher (260) verbunden ist, wobei eine Erfassungseinheit zum Erfassen eines Einspritzvorganges vorgesehen ist, wobei ein Einstellmittel (220) zum Positionieren des Aktors (210) in Bezug auf das Stellglied (230) des Einspritzventils (101) vorgesehen ist, wobei mit dem Einstellmittel (220) der Aktor (210) in Richtung auf das Stellglied (230) bewegbar ist, wobei der Aktor (210) mit einer Spannung vom Steuergerät (200) beaufschlagbar ist, wobei eine Einstellposition des Aktors (210) erreicht ist, wenn der mit der angelegten Spannung bestromte Aktor (210) das Stellglied (230) in eine Zielposition bewegt, dadurch gekennzeichnet, dass im Speicher (260) für verschiedene piezoelektrische Aktoren (210) unterschiedliche Spannungen zum Ansteuern der Aktoren (210) abgelegt sind, und dass das Steuergerät (200) die Aktoren (210) mit der zugeordneten Spannung beaufschlägt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10338282 | 2003-08-20 | ||
DE2003138282 DE10338282A1 (de) | 2003-08-20 | 2003-08-20 | Verfahren und Vorrichtung zum Positionieren eines piezoelektrischen Aktors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1508690A1 true EP1508690A1 (de) | 2005-02-23 |
EP1508690B1 EP1508690B1 (de) | 2006-10-18 |
Family
ID=34042214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040103543 Active EP1508690B1 (de) | 2003-08-20 | 2004-07-23 | Verfahren und Vorrichtung zum Positionieren eines piezoelektrischen Aktors |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1508690B1 (de) |
DE (2) | DE10338282A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014095910A1 (de) * | 2012-12-20 | 2014-06-26 | Continental Automotive Gmbh | Piezoinjektor |
US10024285B2 (en) | 2012-07-18 | 2018-07-17 | Continental Automotive Gmbh | Piezo injector with hydraulically coupled nozzle needle movement |
US10508635B2 (en) | 2012-12-07 | 2019-12-17 | Continental Automotive Gmbh | Piezo injector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005028482A1 (de) * | 2005-06-20 | 2006-12-28 | Siemens Ag | Verfahren und Vorrichtung zur Justierung eines piezoelektrischen Ring-Motors |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902807C1 (de) * | 1999-01-25 | 2000-06-08 | Siemens Ag | Leerhubeinstellung zwischen einem Aktor und einem vom Aktor betätigten Servoventil in einem Kraftstoffinjektor |
EP1103718A2 (de) * | 1999-11-23 | 2001-05-30 | Siemens Aktiengesellschaft | Leerhubeinstellung zwischen einem Aktor und einem Übertragungselement eines Ventils in einem Kraftstoffinjektor |
US6260404B1 (en) * | 1998-01-20 | 2001-07-17 | Mitsubishi Denki Kabushiki Kaisha | Method for manufacturing a cylinder interior fuel injection valve and apparatus for adjusting a fuel injection amount used therefor |
US20030070471A1 (en) * | 2001-10-15 | 2003-04-17 | Manfred Bodenmueller | Method and apparatus for the automatic setting of injectors |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19845037C2 (de) * | 1998-09-30 | 2000-11-30 | Siemens Ag | Verfahren und Anordnung zum Ansteuern eines kapazitiven Aktors |
DE19905340C2 (de) * | 1999-02-09 | 2001-09-13 | Siemens Ag | Verfahren und Anordnung zur Voreinstellung und dynamischen Nachführung piezoelektrischer Aktoren |
DE10012607C2 (de) * | 2000-03-15 | 2002-01-10 | Siemens Ag | Verfahren zur Ansteuerung eines kapazitiven Stellgliedes |
DE10123372B4 (de) * | 2001-05-14 | 2006-12-28 | Siemens Ag | Verfahren zur Ansteuerung eines piezoelektrischen Aktors, der der Verschiebung eines Elements dient |
DE10163731A1 (de) * | 2001-12-21 | 2003-07-10 | Biochip Technologies Gmbh | Piezoaktor |
-
2003
- 2003-08-20 DE DE2003138282 patent/DE10338282A1/de not_active Withdrawn
-
2004
- 2004-07-23 DE DE200450001780 patent/DE502004001780D1/de not_active Expired - Fee Related
- 2004-07-23 EP EP20040103543 patent/EP1508690B1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6260404B1 (en) * | 1998-01-20 | 2001-07-17 | Mitsubishi Denki Kabushiki Kaisha | Method for manufacturing a cylinder interior fuel injection valve and apparatus for adjusting a fuel injection amount used therefor |
DE19902807C1 (de) * | 1999-01-25 | 2000-06-08 | Siemens Ag | Leerhubeinstellung zwischen einem Aktor und einem vom Aktor betätigten Servoventil in einem Kraftstoffinjektor |
EP1103718A2 (de) * | 1999-11-23 | 2001-05-30 | Siemens Aktiengesellschaft | Leerhubeinstellung zwischen einem Aktor und einem Übertragungselement eines Ventils in einem Kraftstoffinjektor |
US20030070471A1 (en) * | 2001-10-15 | 2003-04-17 | Manfred Bodenmueller | Method and apparatus for the automatic setting of injectors |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10024285B2 (en) | 2012-07-18 | 2018-07-17 | Continental Automotive Gmbh | Piezo injector with hydraulically coupled nozzle needle movement |
US10508635B2 (en) | 2012-12-07 | 2019-12-17 | Continental Automotive Gmbh | Piezo injector |
WO2014095910A1 (de) * | 2012-12-20 | 2014-06-26 | Continental Automotive Gmbh | Piezoinjektor |
US9689359B2 (en) | 2012-12-20 | 2017-06-27 | Continental Automotive Gmbh | Piezo injector |
Also Published As
Publication number | Publication date |
---|---|
DE502004001780D1 (de) | 2006-11-30 |
DE10338282A1 (de) | 2005-03-31 |
EP1508690B1 (de) | 2006-10-18 |
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