EP0720770A1 - Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen verbrauchers - Google Patents
Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen verbrauchersInfo
- Publication number
- EP0720770A1 EP0720770A1 EP95924843A EP95924843A EP0720770A1 EP 0720770 A1 EP0720770 A1 EP 0720770A1 EP 95924843 A EP95924843 A EP 95924843A EP 95924843 A EP95924843 A EP 95924843A EP 0720770 A1 EP0720770 A1 EP 0720770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- consumer
- control means
- solenoid valve
- signal
- 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
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
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
-
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
-
- 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 invention relates to a method and a device for controlling an electromagnetic consumer according to the preambles of the independent claims.
- a method and a device for controlling an electromagnetic consumer is known for example from DE-OS 34 26 799 (US-A 4,653,447).
- the switching times and, starting therefrom, the switch-on and switch-off times of a solenoid valve are recorded.
- the exact switching time of the solenoid valve is determined on the basis of the time course of the current through the solenoid valve.
- Such solenoid valves are preferably used to control the injection of fuels in gasoline and / or diesel engines.
- the switching time is of particular interest, at which the armature of the solenoid valve reaches one of its two end positions.
- the procedure is such that the current profile and / or the voltage profile is evaluated in a time window within which the switching point usually occurs and the switching time is determined on the basis of its time profile.
- the voltage applied to the solenoid valve or the current flowing through the solenoid valve is regulated to a certain value.
- a constant solenoid valve voltage or current is therefore provided in order to generate a steady course of the solenoid valve current or voltage.
- the object of the invention is to simplify the detection of the switching time in a method and a device for controlling an electromagnetic consumer of the type mentioned at the beginning.
- FIG. 1 shows a block diagram of the device according to the invention
- FIG. 2 shows various signals plotted over time.
- the exemplary embodiment described is a device for controlling an electromagnetic consumer.
- the described device and the described method can be used in connection with any electromagnetic consumer. It is not limited to the specific application.
- a solenoid valve for controlling the metering of fuel into the internal combustion engine is used in a particularly advantageous manner.
- BIP beginning of injection period
- FIG. 1 essential elements of the device for controlling a solenoid valve-controlled fuel metering device are shown schematically.
- An electromagnetic consumer 100, a current control means 110, and a current Measuring means 120 are connected in series between a supply voltage Ubat and ground.
- An ohmic resistor is preferably used as the current measuring means 120.
- a transistor in particular a field effect transistor, is preferably used as the current control means.
- Consumer 100 is an inductive resistor, in particular a coil of a solenoid valve.
- the two connections of the current measurement with els 120 are connected to a current detection 130.
- the current detection 130 acts on a node 135 with the actual value I js t for the current.
- the setpoint Igoll is provided by a controller 140.
- a current regulator 150 in particular an analog regulator, is applied to the output signal of node 135.
- the output signal UR, IR of the current regulator 150 reaches the control connection of the current control means 110 via a manipulated variable detection 160.
- the control connection is the gate connection of the field effect transistor.
- An ohmic resistor is preferably used as the manipulated variable detection 160.
- the BIP detection 170 applies a signal to the controller 140.
- BIP detection 170 is preferably designed as a comparator which evaluates the voltage drop across resistor 160. As soon as the differentiated output voltage U ⁇ becomes less than zero, the BIP detection 170 generates an output signal. Based on the differentiated control output voltage or In the direction of flow of the controller output current, the BIP detection detects the switching time.
- a control signal U i n E is plotted against time T. This signal indicates whether the control unit 140 forwards a setpoint Igoll to the node 135.
- the current I ⁇ v flowing through the solenoid valve is plotted in the second line.
- the regulator voltage UR present at the output of the regulator 150 is plotted in the fourth line, the differentiated regulator output voltage or the regulator output current IR.
- the output signal of the GDP detection 170 Ug j p is plotted.
- the control device 140 does not emit a signal until the time T1.
- the current control means 110 interrupts the flow of current through the consumer 100 and the solenoid valve is not activated.
- control unit 140 specifies a setpoint. This means that the output signal U E i n assumes an increased value. Since the current flowing through the solenoid valve: 1 . has not yet reached its target value, this means that a value other than 0 is present at the output of node 135.
- the controller 150 then outputs a corresponding manipulated variable UR which increases from 0 to a value. This means that the gate of the current control means is charged by means of a current. The current 1 ⁇ therefore rises very quickly.
- the current control means 110 releases the current flow I ⁇ y and the current, I j fly increases over time.
- the manipulated variable U R reaches its maximum value and the current I R drops.
- the current I ⁇ r ⁇ j flowing through the solenoid valve reaches its target value Isoll.
- the output variable U R of the controller 150 changes. It takes on a smaller value than before. This in turn causes the current I R to assume negative values for a short time. It changes its sign at time T2. This in turn causes the GDP detection 170 to output a signal at time T2 which indicates a change in the current direction.
- the armature of the solenoid valve reaches its new end position at time T3. This in turn causes the inductance of the coil to change.
- the change in the inductance of the coil causes a discontinuity in the output signal U R of the regulator 150, which results in a change of sign or a change in the current I R.
- This change in the sign of the current I R in turn causes the BIP detection 170 to output a pulse signal to the controller 140 at the time T3.
- the control device 140 recognizes the second pulse of the signal U ß ip as the switching time of the solenoid valve and evaluates this signal accordingly.
- One embodiment of the invention provides that the GDP detection suppresses the first pulse at time T2.
- the switching time (BIP) in a solenoid valve is obtained by evaluating the manipulated variable of a current regulator.
- An analog regulator preferably serves as the current regulator.
- a voltage regulation is provided.
- Current flowing through the consumer regulates the voltage drop across the consumer to a setpoint.
- the manipulated variable is evaluated accordingly.
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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4425987 | 1994-07-22 | ||
DE4425987A DE4425987A1 (de) | 1994-07-22 | 1994-07-22 | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
PCT/DE1995/000890 WO1996003758A1 (de) | 1994-07-22 | 1995-07-07 | Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen verbrauchers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0720770A1 true EP0720770A1 (de) | 1996-07-10 |
EP0720770B1 EP0720770B1 (de) | 2002-05-08 |
Family
ID=6523877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95924843A Expired - Lifetime EP0720770B1 (de) | 1994-07-22 | 1995-07-07 | Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen verbrauchers |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0720770B1 (de) |
JP (1) | JPH09503353A (de) |
KR (1) | KR100378452B1 (de) |
DE (2) | DE4425987A1 (de) |
WO (1) | WO1996003758A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19728840A1 (de) | 1997-07-05 | 1999-01-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Erfassung eines Schaltzeitpunktes eines Magnetventils |
DE10129153A1 (de) * | 2001-06-16 | 2003-01-09 | Festo Ag & Co | Elektromagnetisches Ventil mit Haltestromabsenkung |
DE10212092A1 (de) * | 2002-03-19 | 2003-10-09 | Dbt Autom Gmbh | Verfahren und Vorrichtung zum Betrieb eines Elektromagneten an einem eigensicheren Gleichstromkreis |
DE10252476B4 (de) * | 2002-11-12 | 2012-07-26 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine und Brennkraftmaschine |
NO319194B1 (no) | 2002-11-14 | 2005-06-27 | Pronova Biocare As | Lipase-katalysert forestringsfremgangsmate av marine oljer |
DE102008055008B4 (de) * | 2008-12-19 | 2018-08-09 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
DE102011005672B4 (de) * | 2011-03-17 | 2019-07-11 | Continental Automotive Gmbh | Verfahren, Vorrichtung und Computerprogramm zur elektrischen Ansteuerung eines Aktuators zur Bestimmung des Zeitpunkts eines Ankeranschlags |
DE102015204686A1 (de) | 2015-03-16 | 2016-09-22 | Robert Bosch Gmbh | Verfahren zur Steuerung der Kraftstoffzumessung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3426799A1 (de) * | 1984-07-20 | 1986-01-23 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zur regelung der einer brennkraftmaschine einzuspritzenden kraftstoffmenge |
US4612597A (en) * | 1984-12-19 | 1986-09-16 | General Motors Corporation | Circuit for controlling and indicating fuel injector operation |
JP2623242B2 (ja) * | 1987-01-16 | 1997-06-25 | 本田技研工業株式会社 | 電磁作動器駆動回路の電流検出装置 |
DE4308811B9 (de) * | 1992-07-21 | 2004-08-19 | Robert Bosch Gmbh | Verfahren und Einrichtung zur Steuerung einer magnetventilgesteuerten Kraftstoffzumeßeinrichtung |
DE4237706C2 (de) * | 1992-11-07 | 1996-09-12 | Mtu Friedrichshafen Gmbh | Einrichtung zur Aufschlagzeitpunkt-Erkennung für den Anker eines Magnetventils |
-
1994
- 1994-07-22 DE DE4425987A patent/DE4425987A1/de not_active Withdrawn
-
1995
- 1995-07-07 WO PCT/DE1995/000890 patent/WO1996003758A1/de active IP Right Grant
- 1995-07-07 JP JP8505346A patent/JPH09503353A/ja active Pending
- 1995-07-07 DE DE59510199T patent/DE59510199D1/de not_active Expired - Fee Related
- 1995-07-07 KR KR1019960700501A patent/KR100378452B1/ko not_active IP Right Cessation
- 1995-07-07 EP EP95924843A patent/EP0720770B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9603758A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4425987A1 (de) | 1996-01-25 |
WO1996003758A1 (de) | 1996-02-08 |
JPH09503353A (ja) | 1997-03-31 |
EP0720770B1 (de) | 2002-05-08 |
KR100378452B1 (ko) | 2003-07-22 |
DE59510199D1 (de) | 2002-06-13 |
KR960704148A (ko) | 1996-08-31 |
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