WO2011082902A1 - Verfahren und steuergerät zum betreiben eines ventils - Google Patents
Verfahren und steuergerät zum betreiben eines ventils Download PDFInfo
- Publication number
- WO2011082902A1 WO2011082902A1 PCT/EP2010/068715 EP2010068715W WO2011082902A1 WO 2011082902 A1 WO2011082902 A1 WO 2011082902A1 EP 2010068715 W EP2010068715 W EP 2010068715W WO 2011082902 A1 WO2011082902 A1 WO 2011082902A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- variable
- mref
- auxiliary
- valve
- operating
- Prior art date
Links
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
- F02D41/24—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
- F02D41/2432—Methods of calibration
-
- 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
- F02D41/247—Behaviour for small quantities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- 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
- F02D2041/2037—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit for preventing bouncing of the valve needle
-
- 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
Definitions
- the invention relates to a method for operating a valve, in particular a fuel injection valve of an internal combustion engine of a motor vehicle, in which an auxiliary variable as a function of at least one electrical
- Valve needle, driving electromagnetic actuator obtained and examined for the occurrence of a predetermined feature out.
- the invention further relates to a control device for operating such a valve.
- Closed state can be derived at least in some operating modes or points conventional injectors from extremes of a time profile of the auxiliary size. Especially with low drive times and / or low valve lifts of
- a the operating behavior of the electromagnetic actuator characterizing reference size is determined that the auxiliary size is modified in dependence on the reference size to obtain a modified auxiliary size, and that the modified auxiliary size the occurrence of the predetermined feature is examined.
- a temporal course of an actuator voltage or of an actuator current is particularly advantageously used as the at least one electrical operating variable for forming the auxiliary variable, that is, a time characteristic of an electrical voltage which is applied to a magnetic coil of the
- auxiliary variable eg via actuator voltage and / or actuator current
- first signal component of the auxiliary variable which is generated on the basis of the magnetic and electrical properties of the magnetic circuit of the electromagnetic actuator, and a second signal component caused by a movement of elements of the magnetic circuit and thus by the change of
- Geometry parameters of the magnetic circuit is generated. In those operating areas where the armature is moving
- the reference variable according to the invention which preferably simulates the first signal component of the auxiliary variable, which is generated on the basis of the magnetic and electrical properties of the magnetic circuit of the electromagnetic actuator, the second signal component, which is of particular interest, can thus advantageously be targeted by movement of elements of the magnetic circuit and thus is generated by the change of geometry parameters of the magnetic circuit are evaluated.
- the model is particularly advantageous for the model to simulate a time profile of the at least one electrical operating variable and / or the auxiliary variable, in particular how it results without movement of a movable component (for example magnetic armature) of the electromagnetic actuator.
- a movable component for example magnetic armature
- the reference variable can be obtained as a function of the at least one electrical operating variable, particularly preferably from those values of the at least one electrical operating variable resulting in an operating mode of the electromagnetic actuator in which there is no movement of a movable component (eg armature). of the electromagnetic actuator results.
- the values of the at least one electrical operating variable are preferably detected by measurement during a specific actuation of the electromagnetic actuator.
- the special one Control for example, characterized by a relatively short drive time, advantageously ensures that, despite the activation, an armature movement does not already occur.
- Another very advantageous variant of the invention provides that the modified auxiliary size is obtained by the fact that the reference size is subtracted from the auxiliary size, which is particularly low requirements for the
- inventive method executing controller or a computing unit contained therein.
- a difference between the auxiliary variable and the reference variable is further possible for a difference between the auxiliary variable and the reference variable to be divided by the auxiliary variable and / or the reference variable in order to obtain the modified auxiliary variable.
- the reference variable according to the invention can be stored after its determination, so that it is available for a future implementation of the method according to the invention and does not always have to be newly determined.
- Operating method in the form of a computer program which may be stored on an electronic and / or optical storage medium and which is controlled by a control and regulation device, e.g. for one
- Internal combustion engine is executable.
- FIG. 1 shows a schematic representation of an internal combustion engine with a plurality of injection valves operated according to the invention
- FIG. 2c schematically show a detailed view of an injection valve from FIG. 1 in three different operating states
- FIG. 3 is a simplified flowchart of one embodiment of the invention
- FIG. 4 schematically shows a time profile of a drive current for a
- FIG. 5 shows a time profile of an auxiliary variable obtained from an electrical operating variable of the valve of FIG. 2a and variables derived therefrom according to the invention
- FIG. 6 is a functional diagram for implementing a variant of the invention
- an internal combustion engine bears the reference numeral 10 as a whole. It comprises a tank 12, from which a delivery system 14 delivers fuel into a common rail 16. At this are several electromagnetically actuated
- Injectors 18a connected to 18d, which inject the fuel directly into them associated combustion chambers 20a to 20d. Operation of the
- Internal combustion engine 10 is controlled or regulated by a control and regulating device 22, which, among other things, also controls the injection valves 18a to 18d.
- FIGS. 2a to 2c schematically show the injection valve 18a according to FIG. 1 in a total of three different operating states.
- the further injection valves 18b, 18c, 18d illustrated in FIG. 1 have a corresponding structure and functionality.
- the injection valve 18a has an electromagnetic actuator which has a magnetic coil 26 and a magnetic armature 30 cooperating with the magnetic coil 26.
- the magnet armature 30 is connected to a valve needle 28 of the injection valve 18 a, that it relative to the valve needle 28 is movable relative to a direction of movement of the valve needle 28 in Figure 2a with a non-disappearing mechanical clearance.
- the axial play of the armature 30 is limited to the valve needle 28 by two stops 32 and 34.
- at least the lower stop 34 in FIG. 2a could also be realized by a region of the housing of the injection valve 18a.
- valve needle 28 is shown by a valve spring 36 as shown in Figure 2a with a corresponding spring force against the valve seat 38 in the region of
- valve needle 28 moves toward its valve seat 38 under the action of the spring force exerted by the valve spring 36 and carries the magnet armature 30 with it.
- a power transmission from the valve needle 28 to the armature 30 is in this case again by the upper stop 32nd
- the magnet armature 30 can, as shown in FIG. 2b continue to move downwards due to the axial play in Figure 2b until it, as illustrated in Figure 2c, rests against the second stop 34.
- an electrical operating variable of the electromagnetic actuator 26, 30 in the present example, the actuator voltage, which is applied to the magnetic coil 26 of the actuator, is detected. This can be done in a conventional manner by in the control unit 22 ( Figure 1) integrated measurement technology. As a function of the actuator voltage u, an auxiliary variable m (FIG. 5) is then likewise formed in step 100.
- the auxiliary variable m may be identical to the actuator voltage.
- the auxiliary size m can, however, also quite generally as a function of
- Actuator voltage and / or the Aktorstroms be obtained by the magnetic coil 26. Filtering as well as other common methods of signal processing can also be used to determine the auxiliary quantity m from the
- a reference variable mref (FIG. 5) is determined, which characterizes the operating behavior of the electromagnetic actuator 26, 30.
- Reference variable mref obtained by means of a model 200 ( Figure 6), which simulates a dynamic behavior of the electromagnetic actuator 26, 30, in particular its magnetic circuit.
- the model 200 may be particularly advantageous for the model 200 to simulate a chronological progression of the at least one electrical operating variable (actuator voltage, actuator current) and / or the auxiliary variable m, in particular without moving a movable component - in this case the magnet armature 30 - of the electromagnetic Actors results.
- the auxiliary variable mmod modified in the manner described above has a particularly strong correlation with important operating state changes of the valve 18a and is therefore optimally suitable for finding such operating state changes.
- the modified auxiliary size determines with great precision a hydraulic closing time of the valve 18a, to which the valve needle 28 reaches its closed position in the region of the injection holes or the valve seat 38.
- FIG. 4 schematically shows an exemplary time profile of a
- the booster current Iboost is reached at the time t1. Until the following time t2, the booster current is maintained.
- the holding current Ih is maintained according to Figure 4 until the time t3.
- the time difference t3-t0 defines the total electrical activation duration ET of the valve 18a or of its electromagnetic actuator 26, 30.
- the electromagnetic actuator 26, 30 is no longer acted upon by the control unit 22 with a drive current or a corresponding drive voltage, so that the drive current still following the induction laws, finally up to the Time t4 to zero degrades.
- FIG. 5 shows a chronological progression of the needle stroke h of the valve needle 28 (FIG. 2 a) as it occurs during a triggering according to the above-mentioned FIG
- the auxiliary size m usually has no immediately evaluable in a very simple manner features to reliably determine the actual hydraulic closing time ts ( Figure 5).
- the auxiliary variable m considered according to the invention has a non-disappearing curvature in the present case, but not a local extremum to be detected, for example, in a simple manner.
- a reference variable mref is formed using the principle according to the invention in order to enable an efficient evaluation of the auxiliary variable m.
- a modification according to the invention of the auxiliary variable m by means of the reference variable mref leads to the modified auxiliary variable mmod which, as shown in FIG. 5, has a distinct local minimum Min at the closing time ts.
- auxiliary size m reference size mref, modified reference size mmod is preferably a corresponding time course of the relevant variables.
- Embodiment of the operating method according to the invention by means of a digital signal processing, the sampling rate for the corresponding quantities m, mref, mmod according to the desired precision to select sufficiently high.
- FIG. 6 shows by way of example a block diagram of an arithmetic structure for determining the modified auxiliary variable mmod according to the invention.
- model 200 the reference variable mref from the
- the auxiliary variable m is obtained by means of the function block 201 - in the present case likewise in dependence on the actuator voltage u -.
- the auxiliary variable m may be identical to the actuator voltage u.
- the function block 201 can be dispensed with.
- the auxiliary variable m can also be used quite generally as a function of the actuator voltage u and / or of the actuator current I through the
- Magnetic coil 26 are obtained. A filtering and other common
- Methods of signal processing can also be used to obtain the auxiliary quantity m from the actuator voltage and / or the actuator current.
- Difference generator 202 supplied, which determines the difference m - mref.
- this difference may be expressed directly as a feature of interest, e.g. a local minimum Min ( Figure 5), to be examined modified auxiliary size mmod can be used.
- a local minimum Min Figure 5
- Reference variable mref instead of the model 200 ( Figure 6) directly in response to at least one electrical operating variable such. of the actuator voltage u or the actuator current I, from such values of these quantities (u) u, l as result in an operating mode of the electromagnetic actuator 26, 30 in which no movement of the movable component, i. in the present case, the magnet armature 30 of the electromagnetic actuator 26, 30 results.
- the electromagnetic actuator 26, 30, for example, be specifically controlled so that there is not already an actuator movement. This is achieved for example by a sufficiently short drive time ET.
- the values of the at least one electrical operating variable u, I are detected by measurement, in order to be used from now on as a reference variable mref in the sense of the method according to the invention.
- the reference variable mref determined according to the invention can also be stored after its determination 110 (FIG. 3) for future use, so that an always new determination is not required.
- auxiliary variable m having the feature of interest Min is obtained by means of analogue or digital signal processing or by carrying out signal processing processes known per se or processes such as e.g. Filtering, differentiation, integration. In such cases, just make sure that the Model 200 with the signal processing processes used
- the reference variable mref is determined from metrologically obtained quantities u, l.
- the actuator or the valve 18a has a securely closed state in order not to obtain signal components generated by the armature movement as components of the reference variable mref.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/509,948 US8955495B2 (en) | 2009-12-14 | 2010-12-02 | Method and control unit for operating a valve |
IN2972DEN2012 IN2012DN02972A (de) | 2009-12-14 | 2010-12-02 | |
CN201080056518.7A CN102639847B (zh) | 2009-12-14 | 2010-12-02 | 用于运行阀门的方法和控制器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910054589 DE102009054589A1 (de) | 2009-12-14 | 2009-12-14 | Verfahren und Steuergerät zum Betreiben eines Ventils |
DE102009054589.1 | 2009-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011082902A1 true WO2011082902A1 (de) | 2011-07-14 |
Family
ID=43708719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/068715 WO2011082902A1 (de) | 2009-12-14 | 2010-12-02 | Verfahren und steuergerät zum betreiben eines ventils |
Country Status (5)
Country | Link |
---|---|
US (1) | US8955495B2 (de) |
CN (1) | CN102639847B (de) |
DE (1) | DE102009054589A1 (de) |
IN (1) | IN2012DN02972A (de) |
WO (1) | WO2011082902A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009054588A1 (de) * | 2009-12-14 | 2011-06-16 | Robert Bosch Gmbh | Verfahren und Steuergerät zum Betreiben eines Ventils |
DE102015202389A1 (de) * | 2015-02-11 | 2016-08-11 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Einspritzventils |
IT201800005760A1 (it) * | 2018-05-28 | 2019-11-28 | Metodo per determinare un istante di chiusura di un iniettore elettromagnetico di carburante |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1302952A2 (de) * | 2001-10-12 | 2003-04-16 | Schultz, Wolfgang E., Dipl.-Ing. | Verfahren und Schaltung zur Erkennung der Ankerlage eines Elektromagneten |
WO2004102600A1 (en) * | 2003-05-13 | 2004-11-25 | Wärtsilä Finland Oy | A method of controlling the operation of a solenoid |
DE102005038934A1 (de) * | 2005-08-17 | 2007-02-22 | Trw Automotive Gmbh | Verfahren zur Bestimmung der Position eines Schiebers in einem elektromechanischen Ventil |
DE102008055008A1 (de) * | 2008-12-19 | 2010-06-24 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
DE102009032521A1 (de) * | 2009-07-10 | 2011-01-13 | Continental Automotive Gmbh | Bestimmung des Schließzeitpunkts eines Kraftstoffeinspritzventils basierend auf einer Auswertung der Ansteuerspannung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59103091A (ja) * | 1982-12-01 | 1984-06-14 | Nippon Denso Co Ltd | 電磁弁の通電電流制御方法 |
US4604675A (en) * | 1985-07-16 | 1986-08-05 | Caterpillar Tractor Co. | Fuel injection solenoid driver circuit |
US5267545A (en) * | 1989-05-19 | 1993-12-07 | Orbital Engine Company (Australia) Pty. Limited | Method and apparatus for controlling the operation of a solenoid |
DE3942836A1 (de) | 1989-12-23 | 1991-06-27 | Daimler Benz Ag | Verfahren zur bewegungs- und lagezustandserkennung eines durch magnetische wechselwirkung zwischen zwei endpositionen beweglichen bauteiles eines induktiven elektrischen verbrauchers |
US6031707A (en) * | 1998-02-23 | 2000-02-29 | Cummins Engine Company, Inc. | Method and apparatus for control of current rise time during multiple fuel injection events |
-
2009
- 2009-12-14 DE DE200910054589 patent/DE102009054589A1/de not_active Ceased
-
2010
- 2010-12-02 IN IN2972DEN2012 patent/IN2012DN02972A/en unknown
- 2010-12-02 CN CN201080056518.7A patent/CN102639847B/zh not_active Expired - Fee Related
- 2010-12-02 WO PCT/EP2010/068715 patent/WO2011082902A1/de active Application Filing
- 2010-12-02 US US13/509,948 patent/US8955495B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1302952A2 (de) * | 2001-10-12 | 2003-04-16 | Schultz, Wolfgang E., Dipl.-Ing. | Verfahren und Schaltung zur Erkennung der Ankerlage eines Elektromagneten |
WO2004102600A1 (en) * | 2003-05-13 | 2004-11-25 | Wärtsilä Finland Oy | A method of controlling the operation of a solenoid |
DE102005038934A1 (de) * | 2005-08-17 | 2007-02-22 | Trw Automotive Gmbh | Verfahren zur Bestimmung der Position eines Schiebers in einem elektromechanischen Ventil |
DE102008055008A1 (de) * | 2008-12-19 | 2010-06-24 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
DE102009032521A1 (de) * | 2009-07-10 | 2011-01-13 | Continental Automotive Gmbh | Bestimmung des Schließzeitpunkts eines Kraftstoffeinspritzventils basierend auf einer Auswertung der Ansteuerspannung |
Also Published As
Publication number | Publication date |
---|---|
DE102009054589A1 (de) | 2011-06-16 |
US20120291757A1 (en) | 2012-11-22 |
IN2012DN02972A (de) | 2015-07-31 |
CN102639847A (zh) | 2012-08-15 |
CN102639847B (zh) | 2016-02-17 |
US8955495B2 (en) | 2015-02-17 |
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