EP1397592B1 - Injektor mit piezo-aktuator - Google Patents
Injektor mit piezo-aktuator Download PDFInfo
- Publication number
- EP1397592B1 EP1397592B1 EP02767152A EP02767152A EP1397592B1 EP 1397592 B1 EP1397592 B1 EP 1397592B1 EP 02767152 A EP02767152 A EP 02767152A EP 02767152 A EP02767152 A EP 02767152A EP 1397592 B1 EP1397592 B1 EP 1397592B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- piezo
- piezo actuator
- actuator
- control valve
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000009347 mechanical transmission Effects 0.000 claims 1
- 238000013519 translation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
-
- 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
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/24—Fuel-injection apparatus with sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
- F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric 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
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
Definitions
- the invention relates to an injector for an injection system of an internal combustion engine a piezo actuator, a control valve, a nozzle needle and a detection means for Detection of the presence or opening of the piezo actuator on the control valve.
- the injector with piezo actuator shown therein additionally has a detection means. This consists of an electrical contact and a compensator circuit.
- the Electrical contact arises from the contact surfaces of the piezo actuator and the Control valve.
- a Closed circuit from the piezo actuator / control valve to the compensator circuit.
- the invention has for its object in an injector with a piezo actuator To determine the opening and closing times more reliably.
- the detection means comprises a piezo element. This is preferably integrated in the piezo actuator.
- One element of the piezo actuator is used for force measurement.
- the injector In the initial state there is a gap between the piezo actuator and the control valve provided. Changes in length of the piezo actuator Due to the temperature, the injector does not necessarily open.
- the presence / opening of the piezo actuator is recognized by the fact that one on the piezo element applied measuring voltage exceeds a limit value.
- the determined measuring voltage is then set as decisive for the further control of the injector.
- Alternative is provided that from a predeterminable number of determined measurement voltages weighted measuring voltage is determined and this is decisive for the further Control of the injector is set.
- the invention offers the advantage of a corresponding durability of the injector. Due to the exact, reproducible, Knowledge of the opening behavior of the injector is a cylinder-specific regulation of the Injection possible. As a follow-up reaction, the moment contributions and the Peak pressure of the individual cylinders can be adjusted to each other.
- the injector 1 shows a sectional view of an injector.
- the injector 1 consists of a Base body 7, a nozzle 5 and a union nut 6. Inside the nozzle 5 is one Nozzle needle 9 arranged.
- a piezo actuator is located within the base body 7 2 and a control valve 8 with a valve body 10. Via the electrical control of the Piezo actuator is the state of the nozzle needle 9, that is the time of injection and the Injection quantity, determined.
- a piezo element 3 of the piezo actuator 2 is used here Force measurement used. Instead of a piezo actuator, one can of course also mechanically or electromagnetically activated actuating device used become.
- a measuring voltage Um of the piezo element 3 is generated by an electronic Control unit (EDC) 4 evaluated.
- EDC electronic Control unit
- the level of the measuring voltage Um changes.
- the electronic control unit will 4 recognized.
- This measuring voltage is then used as the further control of the injector significantly set.
- a weighted measuring voltage is determined. This can e.g. B. arithmetic averaging. The weighted measuring voltage is then used as decisive for the further operation of the injector.
- Figure 2 shows a schematic diagram for a mechanical translation in the injector 1.
- Die Mechanical translation is exemplary as lever 11 with sections A and B. shown.
- a valve 13 counteracts the force a locking device 12 opened.
- the pressure level p des Fuel At the valve 13 is the pressure level p des Fuel.
- the lever 11 is shown in dashed lines in the open position.
- the piezo actuator 2 is deactivated, the valve 13 is opened via the closing device 12 closed again.
- the use of a mechanical translation offers the advantage that the piezo actuator can be made shorter. Via the locking device 12 the injector is securely closed even if the electronic control fails.
- the invention offers the advantage that it is easy to carry out.
- About the Wear-free determination of the presence of the piezo actuator is a corresponding one Durability of the injector given. This enables a cylinder-specific regulation the injection can be realized.
Description
- Figur 1
- ein Schnittbild des Injektors
- Figur 2
- eine Prinzipdarstellung für die mechanische Übersetzung
- 1
- Injektor
- 2
- Piezo-Aktuator
- 3
- Piezo-Element
- 4
- elektronisches Steuergerät (EDC)
- 5
- Düse
- 6
- Überwurfmutter
- 7
- Grundkörper
- 8
- Steuerventil
- 9
- Düsennadel
- 10
- Ventilkörper
- 11
- Hebel
- 12
- Schließvorrichtung
- 13
- Ventil
Claims (5)
- Injektor für ein Einspritzsystem einer Brennkraftmaschine, der einen Piezo-Aktuator, ein Steuerventil, eine Düsennadel und ein Erkennungsmittel zum Erkennen des Anliegens oder Öffnens des Piezo-Aktuators am Steuerventil aufweist, dadurch gekennzeichnet, dass das Erkennungsmittel ein Piezo-Element (3) umfasst, wobei das Piezo-Element (3) im Piezo-Aktuator (2) integriert wird.
- Injektor (1) nach Anspruch 1, dadurch gekennzeichnet, dass ein Anliegen/Öffnen des Piezo-Aktuators (2) erkannt wird, wenn eine am Piezo-Element (3) anliegende Messspannung (Um) einen Grenzwert (GW) übersteigt (Um>GW).
- Injektor (1) nach Anspruch 2, dadurch gekennzeichnet, dass die ermittelte Messspannung (Um) als maßgeblich für die weitere Ansteuerung des Injektors (1) gesetzt wird.
- Injektor (1) nach Anspruch 2, dadurch gekennzeichnet, dass aus einer vorgebbare Anzahl (i) von ermittelten Messspannungen (Um(i)) eine gewichtete Messspannung (Um(MW)) bestimmt wird und als maßgeblich für die weitere Ansteuerung des Injektors (1) gesetzt wird.
- Injektor (1) nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, dass im Injektor (1) eine mechanische Übersetzung angeordnet wird mittels der ein Wirkhub des Piezo-Aktuators (2) auf eine Schließvorrichtung (12) übersetzt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10129375 | 2001-06-20 | ||
DE10129375A DE10129375B4 (de) | 2001-06-20 | 2001-06-20 | Injektor mit Piezo-Aktuator |
PCT/EP2002/006678 WO2003001049A1 (de) | 2001-06-20 | 2002-06-18 | Injektor mit piezo-aktuator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1397592A1 EP1397592A1 (de) | 2004-03-17 |
EP1397592B1 true EP1397592B1 (de) | 2004-12-01 |
Family
ID=7688588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02767152A Expired - Fee Related EP1397592B1 (de) | 2001-06-20 | 2002-06-18 | Injektor mit piezo-aktuator |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040149840A1 (de) |
EP (1) | EP1397592B1 (de) |
AT (1) | ATE283974T1 (de) |
DE (2) | DE10129375B4 (de) |
WO (1) | WO2003001049A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10162250A1 (de) * | 2001-12-18 | 2003-07-03 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10326707B3 (de) | 2003-06-11 | 2005-01-27 | Westport Germany Gmbh | Ventilvorrichtung und Verfahren zum Einblasen von gasförmigem Kraftstoff |
DE10328573A1 (de) * | 2003-06-25 | 2005-01-13 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004022958A1 (de) * | 2004-05-10 | 2005-12-22 | Siemens Ag | Kraftstoffinjektor mit einer korrigierbaren Einstellung eines Leerhubs einer Aktoreinheit |
DE102006039522B4 (de) * | 2006-08-23 | 2009-01-29 | Continental Automotive Gmbh | Verfahren zur Leerhubsteuerung einer Kraftstoffeinspritzvorrichtung |
FR2907544B1 (fr) * | 2006-10-19 | 2009-02-13 | Renault Sas | Systeme d'estimation du debit d'un injecteur de moteur a combustion interne |
EP2150255A4 (de) | 2007-05-10 | 2011-10-05 | Glaxosmithkline Llc | Chinoxalinderivate als p13-kinase-inhibitoren |
DE102007037036B4 (de) | 2007-08-06 | 2014-03-27 | Mtu Friedrichshafen Gmbh | Verfahren und Einrichtung zur Steuerung und Regelung einer Brennkraftmaschine |
DE102008023371B4 (de) * | 2008-05-13 | 2015-07-30 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Stellvorrichtung |
DE102008027585B4 (de) * | 2008-06-10 | 2010-04-08 | Siemens Aktiengesellschaft | Kalibrierung der Piezoparameter für eine Zylinderinnendruckmessung mittels Piezoinjektoren |
DE102009047611A1 (de) | 2009-12-08 | 2011-06-09 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung mit Nadelpositionsbestimmung |
US8500036B2 (en) | 2010-05-07 | 2013-08-06 | Caterpillar Inc. | Hydraulically amplified mechanical coupling |
US9086041B2 (en) * | 2011-01-19 | 2015-07-21 | Cummins Intellectual Property, Inc. | Fuel injector having a piezoelectric actuator and a sensor assembly |
DE102011081161A1 (de) * | 2011-08-18 | 2013-02-21 | Continental Automotive Gmbh | Ansteuerung und Ansteuerverfahren für einen piezoelektrischen Aktor |
DE102012204251B4 (de) | 2012-03-19 | 2013-12-12 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems und Kraftstoffeinspritzsystem mit Einspritzventilen mit Piezo-Direktantrieb |
DE102012204252B3 (de) * | 2012-03-19 | 2013-08-29 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems mit Druckabbau und Kraftstoffeinspritzsystem mit Einspritzventil mit Servoventil |
DE102012207842A1 (de) * | 2012-05-10 | 2013-11-14 | Continental Automotive Gmbh | Einspritzventil |
DE102013223764B3 (de) | 2013-11-21 | 2015-02-26 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Piezo-Servo-Injektors |
GB201406356D0 (en) * | 2014-04-09 | 2014-05-21 | Delphi Int Operations Lux Srl | Method for the control and diagnosis regarding the operation a fuel injector |
GB201406358D0 (en) * | 2014-04-09 | 2014-05-21 | Delphi Int Operations Lux Srl | Method for the control and diagnosis regarding the operation a fuel injector |
FR3039221B1 (fr) * | 2015-07-23 | 2017-09-01 | Continental Automotive France | Procede de compensation de la derive du jeu fonctionnel d'un injecteur d'un moteur a combustion interne d'un vehicule |
CN105797889B (zh) * | 2016-02-03 | 2017-12-05 | 惠州三高电子科技有限公司 | 一种喷雾产品的喷气控制装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
US4359895A (en) * | 1979-10-25 | 1982-11-23 | Wolff George D | Needle position indicator for a fuel injector nozzle holder |
JP3809919B2 (ja) * | 1995-06-09 | 2006-08-16 | 株式会社日立製作所 | シリンダ内圧検出装置 |
DE19702066C2 (de) * | 1997-01-22 | 1998-10-29 | Daimler Benz Ag | Piezoelektrischer Injektor für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
US6607178B1 (en) * | 1997-09-29 | 2003-08-19 | Siemens Aktiengesellschaft | Thrust device, fuel injection valve having such a device, and method for manufacturing a thrust transfer element |
DE19742943C1 (de) * | 1997-09-29 | 1999-04-22 | Siemens Ag | Vorrichtung in einem Einspritzventil zum Halten einer formschlüssigen Verbindung |
US5988142A (en) * | 1997-12-22 | 1999-11-23 | Stanadyne Automotive Corp. | Duration control of common rail fuel injector |
AT2962U3 (de) * | 1998-07-02 | 1999-11-25 | Avl List Gmbh | Einspritzeinrichtung für eine brennkraftmaschine |
DE19901711A1 (de) * | 1999-01-18 | 2000-07-20 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zum Betreiben eines Brennstoffeinspritzventils |
DE19903555C2 (de) * | 1999-01-29 | 2001-05-31 | Daimler Chrysler Ag | Vorrichtung zur Steuerung eines Piezoelement-Einspritzventils |
DE19905340C2 (de) * | 1999-02-09 | 2001-09-13 | Siemens Ag | Verfahren und Anordnung zur Voreinstellung und dynamischen Nachführung piezoelektrischer Aktoren |
DE19918976A1 (de) * | 1999-04-27 | 2000-11-02 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zu dessen Betätigung |
DE19939446A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19939449A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Verfahren zum Steuern von Flüssigkeiten |
DE19946839B4 (de) * | 1999-09-30 | 2006-07-27 | Robert Bosch Gmbh | Verstelleinrichtung zum Ansteuern einer Regel- und/oder Absperrvorrichtung |
GB9923823D0 (en) * | 1999-10-09 | 1999-12-08 | Lucas Industries Ltd | Fuel injector |
US6298827B1 (en) * | 2000-03-08 | 2001-10-09 | Caterpillar Inc. | Method and system to monitor and control the activation stage in a hydraulically actuated device |
EP1138912A1 (de) * | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Online Optimierung eines Einspritzsystems mit piezolektrischen Elementen |
DE10032022B4 (de) * | 2000-07-01 | 2009-12-24 | Robert Bosch Gmbh | Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor |
-
2001
- 2001-06-20 DE DE10129375A patent/DE10129375B4/de not_active Expired - Fee Related
-
2002
- 2002-06-18 WO PCT/EP2002/006678 patent/WO2003001049A1/de active IP Right Grant
- 2002-06-18 DE DE50201684T patent/DE50201684D1/de not_active Expired - Lifetime
- 2002-06-18 AT AT02767152T patent/ATE283974T1/de not_active IP Right Cessation
- 2002-06-18 EP EP02767152A patent/EP1397592B1/de not_active Expired - Fee Related
- 2002-06-18 US US10/481,471 patent/US20040149840A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1397592A1 (de) | 2004-03-17 |
DE50201684D1 (de) | 2005-01-05 |
US20040149840A1 (en) | 2004-08-05 |
DE10129375B4 (de) | 2005-10-06 |
ATE283974T1 (de) | 2004-12-15 |
WO2003001049A1 (de) | 2003-01-03 |
DE10129375A1 (de) | 2003-01-02 |
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