WO2015090859A1 - Verfahren zum betreiben eines einspritzventils - Google Patents
Verfahren zum betreiben eines einspritzventils Download PDFInfo
- Publication number
- WO2015090859A1 WO2015090859A1 PCT/EP2014/075504 EP2014075504W WO2015090859A1 WO 2015090859 A1 WO2015090859 A1 WO 2015090859A1 EP 2014075504 W EP2014075504 W EP 2014075504W WO 2015090859 A1 WO2015090859 A1 WO 2015090859A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- nozzle needle
- injection valve
- needle
- determined
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 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
- 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1402—Adaptive control
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for 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
- 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
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
-
- 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
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
Definitions
- the present invention relates to a method for operating an injection valve whose nozzle needle is actuated by a piezoactuator.
- nozzle needle position values can currently only be detected statically using piezoelectric effects (eg.
- Disturbance influences that can only be suppressed to a limited extent.
- complex plausibility procedures are used, which, however, u. Not all possible expressions can filter out or error cases and thus lead to verblei ⁇ be played, not permissible residual errors.
- Interference on the feedback signal will include created by the actuation profile of the final stage, by the idle stroke in the power ⁇ transmission between the piezoelectric actuator and the nozzle needle, by means of friction effects in the area of the nozzle needle, and by the egg ⁇ gentliche stroke behavior of the piezo actuator.
- the influences mentioned reduce the robustness of the derived controlled variables and thus also affect the quality of the control quality and ultimately the quality of the injection quantity.
- the present invention has for its object to provide a method for operating an injection valve of the type reproduced above available, with which the nozzle needle lift can be determined particularly simple and accurate.
- the physical quantities actuator current or actuator charge and / or actuator voltage are detected during the injection process, for example via an integrated measuring system on a control device. Furthermore, the dynamic Düsennadelhubverlauf an injection valve is reconstructed using a Mo ⁇ dell Quilt for a nozzle needle movement of an injection valve. The information obtained from the sensor model are used in the manner described above for correcting the real needle stroke and thus guarantee a precise actuation of the injection valve.
- the dynamic nozzle lift is reconstructed via a simplified (reduced) model structure by introducing at least one discrete measurement of the individual injector into a basic model of nozzle needle movement. It is therefore assumed that a basic model that corresponds to a basic functionality of the needle movement of such injectors. This basic model is modified by introducing at least one discrete measured value of the individual injection valve. This results in an adaptation to the corresponding model of the injection valve. In this case, the opening and / or closing time of the nozzle needle is preferably used as the discrete measured value.
- internal state variables for the actuator / needle stroke and / or the force acting on the actuator force can be determined in the inventive method on the model structure, the special ⁇ the actuator speed and / or the actuator travel. Out These state variables can then be determined from the needle stroke for the simplified model approach.
- the minimization of the deviation between the desired and actual values may be performed, for example, via a suitable Optimierungsalgo ⁇ algorithm, such as a mini ⁇ optimization, the error surface between the measured variables or in weighted combination with derived values and the corresponding values in the model output.
- the inventive method is preferably used for operating an injection valve having a piezoelectric actuator capable of directly driven ⁇ nozzle needle.
- the method can also be used in principle for valves with indirect drive, for example in injectors with coil-actuators and servo Inj actuators.
- FIG. 1 shows a diagram representing the piezo / needle stroke of an injection valve as a function of time
- FIG. 2 is a flow chart of a method for operating an injection valve
- FIG. 3 is a block diagram of that shown in FIG.
- Figure 1 shows a diagram of the course of the piezo / needle stroke of an exemplary injector as a function of time.
- the needle stroke reaches the operating points t 0 ppDo (idle stroke), t 0 ppo.i (needle module start
- the embodiment described below relates to a method for operating an injection valve whose nozzle needle is driven by a piezoelectric actuator, wherein the dynamic Düsennadelhubverlauf is determined and regulated.
- a first step 1 the actuator voltage of the piezoactuator is continuously detected during an injection process by measuring the actuator voltage with a measuring system integrated in a control device. The corresponding measured values are stored, for example.
- step 2 the dynamic SI ⁇ sennadelhubverlauf an injection valve is reconstructed based on a Mo ⁇ dell structure for a nozzle needle of the injection valve movement. In doing so, the dynamic nozzle needle stroke progresses through a simplified (reduced) model structure
- the actuator voltage is determined as the target size (step 2).
- the corresponding values can also be stored in the control device.
- the currently measured actuator voltage (ACTUAL value) is then compared with the stored actuator voltage derived from the model structure (SET-TO-ACT) (see step 3), and the deviation between the two variables becomes dynamic control in step 4 Minimized the nozzle needle stroke course.
- ACTUAL value the stored actuator voltage derived from the model structure
- SET-TO-ACT the stored actuator voltage derived from the model structure
- FIG. 2 shows a block diagram of the method described above.
- From the differential voltage corresponding internal state quantities, such as piezo and needle movement, mass forces, velocities, are determined, as shown at 9. These values are then input to an Opti ⁇ m istsstrategie subjected to (step 8), and the mini ⁇ optimization of the voltage deviation in the system.
- the nozzle needle stroke can be precisely controlled in this way.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/105,668 US9903295B2 (en) | 2013-12-20 | 2014-11-25 | Method for operating an injection valve |
CN201480069866.6A CN105934577B (zh) | 2013-12-20 | 2014-11-25 | 用于操作喷射阀的方法 |
KR1020167016358A KR101855022B1 (ko) | 2013-12-20 | 2014-11-25 | 분사 밸브를 동작시키는 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310226849 DE102013226849B3 (de) | 2013-12-20 | 2013-12-20 | Verfahren zum Betreiben eines Einspritzventils |
DE102013226849.1 | 2013-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015090859A1 true WO2015090859A1 (de) | 2015-06-25 |
Family
ID=52011176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/075504 WO2015090859A1 (de) | 2013-12-20 | 2014-11-25 | Verfahren zum betreiben eines einspritzventils |
Country Status (5)
Country | Link |
---|---|
US (1) | US9903295B2 (de) |
KR (1) | KR101855022B1 (de) |
CN (1) | CN105934577B (de) |
DE (1) | DE102013226849B3 (de) |
WO (1) | WO2015090859A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9903295B2 (en) | 2013-12-20 | 2018-02-27 | Continental Automotive Gmbh | Method for operating an injection valve |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015219741B4 (de) | 2015-10-12 | 2022-08-11 | Vitesco Technologies GmbH | Präzise Bestimmung der Einspritzmenge von Kraftstoffinjektoren |
DE102016206369B3 (de) * | 2016-04-15 | 2017-06-14 | Continental Automotive Gmbh | Verfahren zum Ermitteln des Servoventilschließzeitpunktes bei piezogetriebenen Injektoren und Kraftstoffeinspritzsystem |
US20210245188A1 (en) * | 2018-06-25 | 2021-08-12 | Nordson Corporation | System and method for jetting dispenser positional control |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003023212A1 (de) * | 2001-09-05 | 2003-03-20 | Siemens Aktiengesellschaft | Verfahren zum ansteuern eines piezobetriebenen kraftstoff-einspritzventils |
DE102008042146A1 (de) * | 2008-09-17 | 2010-03-18 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Betreiben eines piezoelektrischen Aktors |
WO2011072293A2 (en) * | 2009-12-11 | 2011-06-16 | Purdue Research Foundation | Flow rate estimation for piezo-electric fuel injection |
WO2012152552A2 (de) * | 2011-05-12 | 2012-11-15 | Continental Automotive Gmbh | Regelverfahren für ein einspritzventil und einspritzsystem |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10032022B4 (de) * | 2000-07-01 | 2009-12-24 | Robert Bosch Gmbh | Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor |
DE102005002242A1 (de) * | 2005-01-18 | 2006-07-20 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Kraftstoff-Einspritzvorrichtung einer Brennkraftmaschine |
EP1927743A1 (de) * | 2006-11-30 | 2008-06-04 | Delphi Technologies, Inc. | Fehlerdetektion in einer Injektoranordnung |
GB0807854D0 (en) * | 2008-04-30 | 2008-06-04 | Delphi Tech Inc | Detection of faults in an injector arrangement |
US7975535B2 (en) * | 2008-05-09 | 2011-07-12 | Omar Cueto | Method and system for testing a fuel injector |
DE102008027585B4 (de) * | 2008-06-10 | 2010-04-08 | Siemens Aktiengesellschaft | Kalibrierung der Piezoparameter für eine Zylinderinnendruckmessung mittels Piezoinjektoren |
US8746050B2 (en) * | 2008-09-19 | 2014-06-10 | Omar Cueto | Fuel injection feedback system and method |
DE102009002483A1 (de) * | 2009-04-20 | 2010-10-21 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Einspritzventils |
DE112011101723B4 (de) * | 2010-05-20 | 2020-02-20 | Cummins Intellectual Property, Inc. | Piezoelektrisches Kraftstoffeinspritzdüsensystem, Verfahren zum Schätzen von Zeitpunktcharakteristika eines Kraftstoffeinspritzereignisses |
DE102013226849B3 (de) | 2013-12-20 | 2015-04-30 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Einspritzventils |
-
2013
- 2013-12-20 DE DE201310226849 patent/DE102013226849B3/de active Active
-
2014
- 2014-11-25 WO PCT/EP2014/075504 patent/WO2015090859A1/de active Application Filing
- 2014-11-25 US US15/105,668 patent/US9903295B2/en active Active
- 2014-11-25 CN CN201480069866.6A patent/CN105934577B/zh active Active
- 2014-11-25 KR KR1020167016358A patent/KR101855022B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2003023212A1 (de) * | 2001-09-05 | 2003-03-20 | Siemens Aktiengesellschaft | Verfahren zum ansteuern eines piezobetriebenen kraftstoff-einspritzventils |
DE102008042146A1 (de) * | 2008-09-17 | 2010-03-18 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Betreiben eines piezoelektrischen Aktors |
WO2011072293A2 (en) * | 2009-12-11 | 2011-06-16 | Purdue Research Foundation | Flow rate estimation for piezo-electric fuel injection |
WO2012152552A2 (de) * | 2011-05-12 | 2012-11-15 | Continental Automotive Gmbh | Regelverfahren für ein einspritzventil und einspritzsystem |
Non-Patent Citations (1)
Title |
---|
RAUPACH C ET AL: "Advanced control of piezo injectors for precise fuel injection", VDI BERICHTE, V D I VERLAG GMBH, DE, vol. 1907, 1 January 2005 (2005-01-01), pages 693 - 704, XP009137879, ISSN: 0083-5560 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9903295B2 (en) | 2013-12-20 | 2018-02-27 | Continental Automotive Gmbh | Method for operating an injection valve |
Also Published As
Publication number | Publication date |
---|---|
US9903295B2 (en) | 2018-02-27 |
CN105934577A (zh) | 2016-09-07 |
KR20160088403A (ko) | 2016-07-25 |
DE102013226849B3 (de) | 2015-04-30 |
KR101855022B1 (ko) | 2018-05-04 |
US20160319760A1 (en) | 2016-11-03 |
CN105934577B (zh) | 2019-09-10 |
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