EP0429573A1 - Schaltungsanordnung zum betrieb von elektromagnetischen verbrauchern. - Google Patents
Schaltungsanordnung zum betrieb von elektromagnetischen verbrauchern.Info
- Publication number
- EP0429573A1 EP0429573A1 EP19900906897 EP90906897A EP0429573A1 EP 0429573 A1 EP0429573 A1 EP 0429573A1 EP 19900906897 EP19900906897 EP 19900906897 EP 90906897 A EP90906897 A EP 90906897A EP 0429573 A1 EP0429573 A1 EP 0429573A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- circuit arrangement
- arrangement according
- circuit
- consumer
- 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
-
- 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
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2013—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost voltage source
-
- 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
- F02D2041/2031—Control of the current by means of delays or monostable multivibrators
Definitions
- the invention relates to a circuit arrangement for operating electromagnetic consumers, in particular solenoid valves of internal combustion engines.
- each solenoid valve is therefore supplied with a higher voltage than in the subsequent hold phase.
- a clocking supply (electronic switch) of the solenoid valve in connection with a freewheeling diode is known, "whereby the clocking current (or peak) and holding current is set and, if necessary, regulated.
- DE-OS 28 41 781 known to apply an electromagnetic consumer to a supply voltage via a switching element controlled by two threshold value transmitters.
- the two threshold value transmitters enable two-point controller operation.
- the consumer flow is kept between an upper and a lower current limit value depending on a specification unsatisfactory with regard to their electromagnetic compatibility (EMC property).
- the consumer current is preferably set by a transistor which, particularly in the holding current phase, develops a high, undesired power loss due to the circuit structure.
- the circuit arrangement according to the invention works in stationary, ie in non-clocked mode, so that the disadvantages associated with the clock operation do not occur. This results in a favorable energy balance and a significantly improved EMC property.
- the switching elements assume either their blocked or their conductive state, so that only very low power losses can occur.
- a higher voltage is first applied to the consumer by the corresponding switching element and then a voltage which is smaller in comparison by another switching element.
- solenoid valves With solenoid valves, a corresponding tightening energy is available in the tightening phase and subsequently the much lower holding energy required.
- Two circuits with different voltages are thus provided, so that "two-stage" operation is possible. If, however, a further gradation is desired, a number of switching elements exceeding the number "two” can also be provided within the scope of the invention, which accordingly apply differently large voltages to the consumer.
- the smaller voltage has the size of the minimum excitation voltage of the consumer. As described above, it is preferably only applied to the consumer a certain time after the consumer has been switched on, so that he maintains his minimum excitation.
- the smaller voltage represents the holding voltage, while the larger voltage applied directly to the consumer when switched on forms the pull-in voltage of the solenoid valve.
- the tightening voltage can - depending on the load capacity of the switching element and consumers - make up a multiple of the nominal voltage.
- the larger voltage is formed by an operating voltage and the smaller voltage is generated from the operating voltage by means of a direct voltage converter (DC / DC converter).
- DC / DC converter direct voltage converter
- the output voltage of the DC-DC converter is selected in such a way that the solenoid valve assumes its holding state, whereby voltage drops on any other circuit components that may be present and also disturbance variables (such as tolerance, temperature, etc.) are taken into account.
- the DC-DC converter can be used for several circuit arrangements of an overall system which has several solenoid valves. For example, each cylinder of an internal combustion engine requires an injection valve which is formed by the solenoid valves mentioned.
- a further development of the invention provides that the two switching elements are connected to the consumer via a decoupling circuit.
- This decoupling circuit is preferably formed by a diode arrangement.
- the arrangement is particularly designed so that two diodes are connected in the forward direction with electrodes of the same type (anodes or cathodes) to the consumer and the other electrodes (cathodes or anodes) are each connected to one of the switching elements. In this way, undesired equalizing currents between the two voltage levels are avoided.
- at least one of the circuits operated with the differently large voltages has a current control.
- the circuit having the holding voltage is preferably provided with the current control. This has a sensor that detects the holding current and is connected to a current regulator. This controls the associated switching element.
- the sensor is preferably designed as a shunt.
- Transistors can be used as switching elements.
- a control circuit which supplies the current regulator with a holding current setpoint and the control element supplied with operating voltage directly with a control value for the starting phase.
- the control circuit preferably works in such a way that when switching on the control value is first supplied to the base of the transistor connected to the larger voltage, so that a defined peak current is set for switching the solenoid valve on as quickly as possible. After the pull-in phase, the supply of the solenoid valve is taken over by the holding circuit operated at a lower voltage. For this purpose, the switching element assigned to the holding circuit is switched on and the switching element assigned to the pull-in circuit is switched off.
- both circuits are switched on at the same time and for the pull-in circuit to be switched off after the pull-in phase, the holding circuit remaining switched on.
- the consumer is initially operated with the correspondingly higher voltage, since the smaller voltage no effect.
- the decoupling circuit prevents mutual interference between the two voltages. After switching off the larger voltage (operating voltage), further operation with the lower holding voltage takes place.
- the current regulation of the holding circuit reduces the power loss and the current load of the solenoid valve to the lowest possible value.
- the current control also offers the possibility of tuning the holding current precisely to a predetermined value.
- any voltage ripple in the holding circuit that may be present is largely corrected by the current regulator. Due to the use of the DC-DC converter to generate the holding voltage, there is only a very low power loss in the associated switching element, so that, in particular, common transistors can be used.
- the withstand voltage, i. H. the output voltage of the DC-DC converter is preferably set so that there is a transition from the current control to a voltage control when the ohmic resistance of the consumer increases (e.g. due to temperature influences). This additionally limits the power loss in the consumer (solenoid valve).
- FIG. 1 shows a block diagram of the circuit arrangement according to the invention
- FIG. 2 shows a detail of the block diagram in accordance with FIG. 1,
- FIG. 3 shows a control signal for a holding circuit
- FIG. 4 shows a control signal for a pull-in circuit
- FIG. 1 shows as a block diagram a circuit arrangement for operating an electromagnetic consumer 1. This is designed as a solenoid valve of an internal combustion engine, not shown. The fuel injection of the internal combustion engine is controlled by means of the solenoid valve.
- the circuit arrangement is connected to an operating voltage Ug, which is fed as an input voltage to a DC-DC converter 2.
- the DC-DC converter 2 represents a so-called DC / DC converter, which generates a holding voltage U H from the operating voltage U B.
- the operating voltage U B and the holding voltage U H are DC voltages.
- the operating voltage U B represents a voltage U 1 which is greater than the holding voltage U H , and consequently the holding voltage U H forms a voltage U 2 which is smaller by comparison.
- the holding voltage U H is fed to a first switching element 4 via a sensor 3.
- the operating voltage U B is connected to a second switching element 5.
- the switching elements 4 and 5 are preferably designed as transistors.
- the emitter-collector paths form the switching paths of the switching elements 4 and 5.
- the operating voltage U B is preferably applied to the emitter of the associated transistor and the holding voltage U H reduced by the voltage drop at the sensor 3 is likewise applied to the emitter of the other transistor.
- the outputs 6 and 7 of the switching elements 4 and 5 are connected to a decoupling circuit 8.
- the outputs 6 and 7 are formed by the collectors of the transistors of the switching elements 4 and 5.
- the decoupling circuit 8 has a diode arrangement 9 which, as shown in FIG. 2-, consists of two diodes D 1 and D 2 .
- the anodes of the diodes D 1 and D 2 are each connected to one of the collectors of the transistors forming the switching elements 4 and 5.
- the cathodes of the diodes D 1 and D 2 are brought together at a summation point 10, which is also connected to one terminal of the consumer 1.
- the other connection of the consumer 1 is grounded.
- the circuit arrangement also has a control circuit 11 which provides a first control signal S 1 at its output 12 and a second control signal S 2 at its output 13.
- the control signal S 1 is fed to a current controller 14 as a holding current setpoint.
- the sensor 3 designed as a shunt 15 is connected to the current regulator 14 via a line 16.
- the output 17 of the current regulator 14 leads to the first switching element 4, to the base of the transistor used there.
- the second control signal S 2 is available, which is given via a line 18 to the base of the transistor of the second switching element 5.
- the circuit arrangement according to the invention works as follows:
- control circuit 11 To open the solenoid valve (consumer 1), the control circuit 11 provides the pulses shown in FIGS. 3 and 4 (control signals S 1 and S 2 ). Both control signals S 1 and S 2 are emitted at the same time t 1 . At time t 2 , control signal S 2 , which acts on second switching element 5, goes back to zero, while control signal S 1 continues to be delivered - up to time t 3 .
- the output of the control signals S 1 and S 2 has the result that the current controller 14 is given a holding current setpoint, via line 16 the current controller 14 receives the actual holding current value detected by the sensor 3.
- the control difference resulting between the holding current setpoint and the holding current actual value leads at the output 17 of the current regulator to a corresponding output signal which drives the base of the transistor of the first switching element 4.
- the two switching elements 4 and 5 are turned on based on the control signals S 1 and S 2 , so that the voltage profile of the consumer voltage U L shown in FIG. 5 and the associated consumer current profile (consumer current I L ) shown in FIG. 6 are set .
- the control signal S 2 is applied to the second switching element 5, the larger voltage U 1 (operating voltage U B ) applied to the consumer 1 via the decoupling circuit 8.
- the smaller voltage U 2 (holding voltage U H ), which is present at the summation point 10 and accordingly also at the consumer 1, has no effect since it is less than the operating voltage U B.
- FIG. 6 shows the current diagram associated with the voltage profile of the consumer 1.
- the consumer current I L rises rapidly due to the relatively large operating voltage U B and very quickly reaches its maximum value I max .
- This allows the solenoid valve to tighten in a very short time. If the tightening has taken place, it is sufficient for maintaining this state that the winding of the solenoid valve is flowed through by a current which is smaller than the maximum current I max , namely the holding current I H. This occurs at time t 2 .
- It is supplied by the DC / DC converter 2, set by the switching element 4-. Since the current regulation (current regulator 14) takes place with the voltage U 2 that is lower than the operating voltage U B , only a relatively low power loss occurs in the first switching element 4.
- the circuit arrangement according to the invention can be used in particular in the case of shock absorbers for motor vehicles which are adjustable in their damping force.
- the adjusting member of such a shock absorber is designed as a solenoid valve so that it forms the consumer 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3920064A DE3920064A1 (de) | 1989-06-20 | 1989-06-20 | Schaltungsanordnung zum betrieb von elektromagnetischen verbrauchern |
DE3920064 | 1989-06-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0429573A1 true EP0429573A1 (de) | 1991-06-05 |
EP0429573B1 EP0429573B1 (de) | 1993-08-11 |
Family
ID=6383096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90906897A Revoked EP0429573B1 (de) | 1989-06-20 | 1990-05-16 | Schaltungsanordnung zum betrieb von elektromagnetischen verbrauchern |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0429573B1 (de) |
JP (1) | JPH04500399A (de) |
BR (1) | BR9006811A (de) |
DE (2) | DE3920064A1 (de) |
WO (1) | WO1990015922A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7738234B2 (en) | 2005-04-01 | 2010-06-15 | Smc Kabushiki Kaisha | Solenoid-operated valve and solenoid-operated valve-driving circuit |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2800442B2 (ja) * | 1991-03-18 | 1998-09-21 | 国産電機株式会社 | 電磁式燃料噴射弁の駆動方法及び駆動装置 |
US5419162A (en) * | 1994-01-25 | 1995-05-30 | Matrix, S.R.L. | High speed electromagnet selection device for selecting the needles in a knitting machine |
JP3844091B2 (ja) * | 1996-07-02 | 2006-11-08 | 株式会社小松製作所 | 誘導負荷駆動装置 |
US5796223A (en) * | 1996-07-02 | 1998-08-18 | Zexel Corporation | Method and apparatus for high-speed driving of electromagnetic load |
DE19963154B4 (de) * | 1999-12-24 | 2009-10-08 | Conti Temic Microelectronic Gmbh | Verfahren zur Vorgabe des Stroms durch ein induktives Bauteil |
AU771141B2 (en) * | 2000-02-16 | 2004-03-11 | Robert Bosch Gmbh | Method and circuit arrangement for operating a solenoid valve |
DE10022342C2 (de) * | 2000-05-08 | 2003-04-24 | Siemens Ag | Antriebselektronik und Verfahren zur elektrisch gesteuerten Einschaltung eines elektromagnetischen Schaltgeräts |
DE10022722C5 (de) * | 2000-05-10 | 2008-07-10 | Pilz Gmbh & Co. Kg | Sicherheitsschaltgerät zum sicheren Ein- und Ausschalten eines elektrischen Verbrauchers |
DE10030714A1 (de) * | 2000-06-23 | 2002-01-10 | Schmersal K A Gmbh & Co | Sicherheitsschalter und Hubmagnetbaugruppe |
DE102004019152B4 (de) * | 2004-04-21 | 2007-05-31 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Magnetventils zur Mengensteuerung |
DE102005040532B4 (de) | 2005-08-26 | 2009-09-03 | Continental Automotive Gmbh | Stromquelle und Steuervorrichtung |
DE102007023716A1 (de) * | 2006-11-02 | 2008-05-08 | Continental Teves Ag & Co. Ohg | Proportionalregelventil |
DE102007006179B4 (de) | 2007-02-07 | 2008-10-16 | Continental Automotive Gmbh | Schaltungsanordnung und Verfahren zum Betreiben einer induktiven Last |
DE102020109880A1 (de) | 2020-04-08 | 2021-10-14 | Wabco Europe Bvba | Verfahren und Vorrichtung zum Ansteuern eines Fluid-Magnetventils |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2569239A1 (fr) * | 1984-03-05 | 1986-02-21 | Mesenich Gerhard | Procede pour commander une soupape d'injection electromagnetique |
DE3511966C2 (de) * | 1985-04-02 | 1993-10-14 | Bosch Gmbh Robert | Stromregelung für einen elektromagnetischen Verbraucher in Verbindung mit einer Brennkraftmaschine |
US4729056A (en) * | 1986-10-02 | 1988-03-01 | Motorola, Inc. | Solenoid driver control circuit with initial boost voltage |
DE3729954A1 (de) * | 1987-09-07 | 1989-03-16 | Sikora Gernot | Verfahren und einrichtung zum ansteuern von einspritzventilen |
-
1989
- 1989-06-20 DE DE3920064A patent/DE3920064A1/de not_active Withdrawn
-
1990
- 1990-05-16 WO PCT/DE1990/000361 patent/WO1990015922A1/de not_active Application Discontinuation
- 1990-05-16 DE DE9090906897T patent/DE59002301D1/de not_active Revoked
- 1990-05-16 EP EP90906897A patent/EP0429573B1/de not_active Revoked
- 1990-05-16 JP JP2507309A patent/JPH04500399A/ja active Pending
- 1990-05-16 BR BR909006811A patent/BR9006811A/pt not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9015922A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7738234B2 (en) | 2005-04-01 | 2010-06-15 | Smc Kabushiki Kaisha | Solenoid-operated valve and solenoid-operated valve-driving circuit |
Also Published As
Publication number | Publication date |
---|---|
BR9006811A (pt) | 1991-08-06 |
DE59002301D1 (de) | 1993-09-16 |
JPH04500399A (ja) | 1992-01-23 |
WO1990015922A1 (de) | 1990-12-27 |
DE3920064A1 (de) | 1991-01-03 |
EP0429573B1 (de) | 1993-08-11 |
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