EP0451162B1 - Electronic circuit arrangement - Google Patents
Electronic circuit arrangement Download PDFInfo
- Publication number
- EP0451162B1 EP0451162B1 EP90900060A EP90900060A EP0451162B1 EP 0451162 B1 EP0451162 B1 EP 0451162B1 EP 90900060 A EP90900060 A EP 90900060A EP 90900060 A EP90900060 A EP 90900060A EP 0451162 B1 EP0451162 B1 EP 0451162B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solenoid valves
- circuit arrangement
- switching element
- collecting point
- series
- 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 - Lifetime
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Classifications
-
- 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
- H01F7/1877—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings controlling a plurality of loads
-
- 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
Definitions
- the invention relates to an electronic circuit arrangement for the control of solenoid valves according to the preamble of the main claim.
- Such circuit arrangements are used, for example, to control the field windings of solenoid valves, as are used in particular in the control of injection systems for internal combustion engines.
- JP-A-5 854 611 an electronic circuit arrangement of two excitation windings of an electromagnet is known, in which the Excitation windings are each in series with a controllable switching element in the form of switching transistors. Both excitation windings of the electromagnet can be connected to a power supply device via a switching device. Furthermore, a free-wheeling circuit is provided for each excitation winding, each of which comprises a series connection of a diode and a zener diode. From the document DE-A-2 452 077 a control and current recovery circuit for the printing magnets of a high-speed printer is known, in which a plurality of excitation windings are connected in series to a current source both with switching elements and with diodes.
- one connection of all excitation windings lies on a common line which is connected to a power supply device via a switching path of a switching transistor in the switched-on state and via a diode polarized in the reverse direction in the blocked state.
- the electromagnets are switched off by reversing the switching elements assigned to the respective excitation windings, the excitation windings being separated from the power supply part and a capacitor contained therein.
- the induction voltage induced in the excitation windings of the electromagnets is fed back into the power supply part via the diode assigned to each excitation winding and switched for this voltage in the forward direction.
- the electronic circuit arrangement according to the invention with the features mentioned in the main claim has the advantage that multiple use of the additional circuitry for the individual solenoid valves takes place, but nevertheless switching the individual solenoid valves on and off is possible independently of one another. This reduces the expenditure on equipment and thus also the space required, but at the same time creates flexible control.
- the circuit structure according to the invention is also particularly simple in that only three different collection points are formed, to which the additional circuit common for all solenoid valves is then connected. Between the solenoid valve-side collection point and the diode-side collection point is a free-wheel switching element belonging to the additional circuit. The latter is preferably designed as a free-wheeling transistor.
- This freewheeling switching element therefore takes over the freewheeling current of all the solenoid valves when it is switched off.
- an extinguishing capacitor belonging to the additional circuit.
- the principle according to the invention which has already been explained above, is used, namely that only one quenching capacitor is provided, which, however, serves all electronic components.
- the invention also significantly reduces the circuit voltage on the operating voltage source side, in that a protective diode belonging to the additional circuit is located in series with the operating voltage source between the solenoid valve-side collecting point and the switching element-side collecting point.
- This protective diode is accordingly assigned to all solenoid valves as the only component.
- a series resistor belonging to the additional circuit can also preferably be connected in series with the operating voltage source, which series resistor is consequently likewise subject to multiple use.
- the figure shows a circuit diagram of the electronic circuit arrangement in a schematically simplified representation.
- the electronic circuit arrangement has a multiplicity of solenoid valves MV 1 to MV n , which represent electromagnetic components provided with excitation windings.
- the plurality of solenoid valves MV1 to MV n is characterized by the row of dots in the figure.
- the beginnings of the individual excitation windings of the solenoid valves MV 1 to MV n are connected via lines 1 to a collection point A.
- the ends of the excitation windings of the solenoid valves MV 1 to MV n lead via lines 2 to controllable switching elements 3, which are designed as bipolar transistors T 1 to T n .
- each solenoid valve MV1 to MV n is assigned a bipolar transistor T1 to T n .
- the individual lines 2 lead via the respective collector-emitter path of the transistors T 1 to T n via lines 4 to a further collection point B.
- Each line 2 leads to a diode D1 to D n and from there via lines 5 to a third collection point C.
- the procedure is such that between the component-side collecting point A and the diode-side collecting point C there is a freewheeling switching element 6, which is designed as a freewheeling transistor T F.
- An extinguishing capacitor C L is also connected between the switching element-side collecting point B and the diode-side collecting point C.
- the specific circuit arrangement of the freewheeling transistor T F and the quenching capacitor C L is not shown in detail in the figure; it is only indicated by the representation of the circuit board 7 receiving these components.
- the circuit of the circuit board 7 receives its supply voltage via lines 8 drawn in broken lines, which lead to an operating voltage source 9.
- the positive pole of the operating voltage source 9 leads to a protective diode 10, the other connection of which leads to the collecting point A.
- the negative pole of the operating voltage source 9 is connected to a series resistor 11, the further connection of which leads to the collecting point B.
- the procedure is such that the anodes of the diodes D 1 to D n are connected to the lines 2 and their cathodes to the collection point C.
- the anode of the protective diode 10 is with the positive pole of the operating voltage source 9 in connection, while the cathode leads to the collecting point A.
- the circuit arrangement works as follows:
- the circuit arrangement shown also makes it clear that by looping in the quenching capacitor C L between the collection points B and C, a corresponding quenching can be carried out when the individual solenoid valves MV 1 to MV n are switched off independently of one another.
- a corresponding quenching can be carried out when the individual solenoid valves MV 1 to MV n are switched off independently of one another.
- solenoid valves MV 1 to MV n only one extinguishing component is required.
- both the protective diode 10 and the series resistor 11 are used collectively for the large number of solenoid valves MV 1 to MV n , so that an optimal ratio with regard to the use of components is present, although individual circuit parts can still be controlled independently of other circuit parts.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
- Electronic Switches (AREA)
Abstract
Description
Die Erfindung betrifft eine elektronische Schaltungsanordnung für die Ansteuerung von Magnetventilen nach der Gattung des Hauptanspruchs.The invention relates to an electronic circuit arrangement for the control of solenoid valves according to the preamble of the main claim.
Derartige Schaltungsanordnungen werden beispielsweise zur Ansteuerung der Erregerwicklungen von Magnetventilen verwendet, wie sie insbesondere bei der Steuerung von Einspritzsystemen für Verbrennungsmotoren eingesetzt werden.Such circuit arrangements are used, for example, to control the field windings of solenoid valves, as are used in particular in the control of injection systems for internal combustion engines.
Die bei Einspritzsystemen für Verbrennungsmotoren bekannten elektronischen Schaltungsanordnungen erfordern für die Ansteuerung der Magnetventile einen relativ großen Schaltungsaufwand, so daß zum einen ein relativ hoher Erstellungspreis entsteht, andererseits jedoch auch ein entsprechender Raumbedarf für die elektronischen Bauteile zur Verfügung gestellt werden muß.The electronic circuit arrangements known in the case of injection systems for internal combustion engines require a relatively large amount of circuitry for the control of the solenoid valves, so that on the one hand a relatively high production price arises, but on the other hand a corresponding space requirement for the electronic components must also be made available.
Aus JP-A-5 854 611 ist eine elektronische Schaltungsanordnung von zwei Erregerwicklungen eines Elektromagnets bekannt, bei der die Erregerwicklungen jeweils in Reihe zu einem steuerbaren Schaltelement in Form von Schalttransistoren liegen. Beide Erregerwicklungen des Elektromagneten sind über eine Schalteinrichtung mit einer Stromversorgungseinrichtung verbindbar. Weiterhin ist für jede Erregerwicklung ein Freilaufkreis vorgesehen, der jeweils eine Serienschaltung einer Diode und einer Zenerdiode umfaßt. Aus dem Dokument DE-A-2 452 077 ist eine Ansteuer- und Stromrückgewinnungsschaltung für die Druckmagnete eines Schnelldruckers bekannt, bei der eine Mehrzahl von Erregerwicklungen in Serie sowohl jeweils mit Schaltelementen als auch mit Dioden an eine Stromquelle geschaltet ist. Jeweils ein Anschluß aller Erregerwicklungen liegt an einer gemeinsamen Leitung, die im Einschaltzustand über eine Schaltstrecke eines Schalttransistors und im Sperrzustand über eine in Sperrichtung gepolte Diode mit einer Stromversorgungseinrichtung verbunden ist. Das Abschalten der Elektromagnete erfolgt durch Umsteuern der den jeweiligen Erregerwicklungen zugeordneten Schaltelemente, wobei die Erregerwicklungen von dem Stromversorgungsteil und einem darin enthaltenen Kondensator getrennt werden. Die in den Erregerwicklungen der Elektromagnete induzierte Induktionsspannung wird über die jeder Erregerwicklung zugeordnete und für diese Spannung in Durchlaßrichtung geschaltete Diode in das Stromversorgungsteil zurückgespeist.From JP-A-5 854 611 an electronic circuit arrangement of two excitation windings of an electromagnet is known, in which the Excitation windings are each in series with a controllable switching element in the form of switching transistors. Both excitation windings of the electromagnet can be connected to a power supply device via a switching device. Furthermore, a free-wheeling circuit is provided for each excitation winding, each of which comprises a series connection of a diode and a zener diode. From the document DE-A-2 452 077 a control and current recovery circuit for the printing magnets of a high-speed printer is known, in which a plurality of excitation windings are connected in series to a current source both with switching elements and with diodes. In each case one connection of all excitation windings lies on a common line which is connected to a power supply device via a switching path of a switching transistor in the switched-on state and via a diode polarized in the reverse direction in the blocked state. The electromagnets are switched off by reversing the switching elements assigned to the respective excitation windings, the excitation windings being separated from the power supply part and a capacitor contained therein. The induction voltage induced in the excitation windings of the electromagnets is fed back into the power supply part via the diode assigned to each excitation winding and switched for this voltage in the forward direction.
Die erfindungsgemäße elektronische Schaltungsanordnung mit den im Hauptanspruch genannten Merkmalen hat demgegenüber den Vorteil, daß eine Mehrfachausnutzung der Zusatzbeschaltung für die einzelnen Magnetventile erfolgt, gleichwohl jedoch ein Ein- und Ausschalten der einzelnen Magnetventile unabhängig voneinander möglich ist. Damit ist der apparative Aufwand und somit auch der Platzbedarf verringert, gleich jedoch eine flexible Steuerung geschaffen. Der erfindungsgemäße Schaltungsaufbau ist auch insofern besonders einfach, als lediglich drei unterschiedliche Sammelpunkte gebildet werden, an die dann die für sämtliche Magnetventile gemeinsame Zusatzbeschaltung angeschlossen wird. Zwischen dem magnetventilseitigen Sammelpunkt und dem diodenseitigen Sammelpunkt liegt ein zur Zusatzbeschaltung gehörendes Freilaufschaltglied. Letzteres ist vorzugsweise als Freilauftransistor ausgebildet. Mithin übernimmt dieses Freilaufschaltglied jeweils den Freilaufstrom sämtlicher Magnetventile bei der Abschaltung. Zwischen dem Schaltelementseitigen Sammelpunkt und dem diodenseitigen Sammelpunkt liegt ein zur Zusatzbeschaltung gehörender Löschkondensator. Auch hier wird nach dem oben bereits erläuterten erfindungsgemäßen Prinzip vorgegangen, indem nämlich lediglich ein Löschkondensator vorgesehen ist, der jedoch alle elektronischen Bauelemente bedient.The electronic circuit arrangement according to the invention with the features mentioned in the main claim has the advantage that multiple use of the additional circuitry for the individual solenoid valves takes place, but nevertheless switching the individual solenoid valves on and off is possible independently of one another. This reduces the expenditure on equipment and thus also the space required, but at the same time creates flexible control. The The circuit structure according to the invention is also particularly simple in that only three different collection points are formed, to which the additional circuit common for all solenoid valves is then connected. Between the solenoid valve-side collection point and the diode-side collection point is a free-wheel switching element belonging to the additional circuit. The latter is preferably designed as a free-wheeling transistor. This freewheeling switching element therefore takes over the freewheeling current of all the solenoid valves when it is switched off. Between the switching element-side collecting point and the diode-side collecting point there is an extinguishing capacitor belonging to the additional circuit. Here too, the principle according to the invention, which has already been explained above, is used, namely that only one quenching capacitor is provided, which, however, serves all electronic components.
Durch die Erfindung läßt sich auch der betriebsspannungsquellenseitige Schaltungsaufwand erheblich vermindern, indem zwischen dem magnetventilseitigen Sammelpunkt und dem schaltungselementseitigen Sammelpunkt in Reihe zur Betriebsspannungsquelle eine zur Zusatzbeschaltung gehörende Schutzdiode liegt. Diese Schutzdiode ist dem- gemäß als alleiniges Bauteil sämtlichen Magnetventilen zugeordnet.The invention also significantly reduces the circuit voltage on the operating voltage source side, in that a protective diode belonging to the additional circuit is located in series with the operating voltage source between the solenoid valve-side collecting point and the switching element-side collecting point. This protective diode is accordingly assigned to all solenoid valves as the only component.
In gleicher Weise - wie zuvor erläutert - kann zur Betriebsspannungsquelle fernerhin mit Vorzug ein zur Zusatzbeschaltung gehörender Vorwiderstand in Reihe liegen, der demzufolge ebenfalls einer Mehrfachausnutzung unterliegt.In the same way - as explained above - a series resistor belonging to the additional circuit can also preferably be connected in series with the operating voltage source, which series resistor is consequently likewise subject to multiple use.
Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert.The invention is explained in more detail below with reference to the drawing.
Die Figur zeigt in schematisch vereinfachter Darstellung ein Schaltbild der elektronischen Schaltungsanordnung.The figure shows a circuit diagram of the electronic circuit arrangement in a schematically simplified representation.
Gemäß der Figur weist die elektronische Schaltungsanordnung eine Vielzahl von Magnetventilen MV₁ bis MVn auf, die mit Erregerwicklungen versehene elektromagnetische Bauelemente darstellen. Die Vielzahl der Magnetventile MV₁ bis MVn ist in der Figur durch die Punktreihe gekennzeichnet. Die Anfänge der einzelnen Erregerwicklungen der Magnetventile MV₁ bis MVn stehen über Leitungen 1 mit einem Sammelpunkt A in Verbindung. Die Enden der Erregerwicklungen der Magnetventile MV₁ bis MVn führen über Leitungen 2 zu steuerbaren Schaltelementen 3, welche als bipolare Transistoren T₁ bis Tn ausgebildet sind. Demzufolge ist jedem Magnetventil MV₁ bis MVn jeweils ein bipolarer Transistor T₁ bis Tn zugeordnet. Die einzelnen Leitungen 2 führen über die jeweilige Kollektor-Emitter-Strecke der Transistoren T₁ bis Tn über Leitungen 4 zu einem weiteren Sammelpunkt B.According to the figure, the electronic circuit arrangement has a multiplicity of
Jede Leitung 2 führt zu einer Diode D₁ bis Dn und von dort aus über Leitungen 5 zu einem dritten Sammelpunkt C.Each line 2 leads to a diode D₁ to D n and from there via lines 5 to a third collection point C.
An die einzelnen Sammelpunkte A, B und C sind nunmehr Komponenten einer Zusatzbeschaltung derart angeschlossen, daß diese Komponenten mit sämtlichen Magnetventilen MV₁ bis MVn zusammenwirken. Demzufolge liegt eine Vielfachausnutzung der einzelnen Zusatzbeschaltungskomponenten vor.Components of an additional circuit are now connected to the individual collection points A, B and C in such a way that these components interact with all
Im einzelnen ist dabei so vorgegangen, daß zwischen dem bauelementseitigen Sammelpunkt A und dem diodenseitigen Sammelpunkt C ein zur Zusatzbeschaltung gehörendes Freilaufschaltglied 6 liegt, das als Freilauftransistor TF ausgebildet ist.In detail, the procedure is such that between the component-side collecting point A and the diode-side collecting point C there is a freewheeling switching element 6, which is designed as a freewheeling transistor T F.
Zwischen dem schaltelementseitigen Sammelpunkt B und dem diodenseitigen Sammelpunkt C ist darüber hinaus ein Löschkondensator CL geschaltet. Die konkrete Schaltungsanordnung des Freilauftransistors TF und des Löschkondensator CL ist in der Figur nicht im Detail wiedergegeben; sie wird lediglich durch die Darstellung der diese Bauteile aufnehmenden Platine 7 angedeutet. Ihre Versorgungsspannung erhält die Schaltung der Platine 7 über gestrichelt eingezeichnete Leitungen 8, die zu einer Betriebsspannungsquelle 9 führen.An extinguishing capacitor C L is also connected between the switching element-side collecting point B and the diode-side collecting point C. The specific circuit arrangement of the freewheeling transistor T F and the quenching capacitor C L is not shown in detail in the figure; it is only indicated by the representation of the circuit board 7 receiving these components. The circuit of the circuit board 7 receives its supply voltage via
Der Pluspol der Betriebsspannungsquelle 9 führt zu einer Schutzdiode 10, deren anderer Anschluß zum Sammelpunkt A führt. Der Minuspol der Betriebsspannungsquelle 9 ist mit einem Vorwiderstand 11 verbunden, dessen weiterer Anschluß zum Sammelpunkt B führt.The positive pole of the operating voltage source 9 leads to a protective diode 10, the other connection of which leads to the collecting point A. The negative pole of the operating voltage source 9 is connected to a series resistor 11, the further connection of which leads to the collecting point B.
Im Detail ist im Hinblick auf die Durchlaßrichtung der einzelnen Dioden so vorgegangen, daß die Anoden der Dioden D₁ bis Dn mit den Leitungen 2 und deren Katoden mit dem Sammelpunkt C in Verbindung stehen. Die Anode der Schutzdiode 10 steht mit dem Pluspol der Betriebsspannungsquelle 9 in Verbindung, während die Katode zum Sammelpunkt A führt.In detail, with regard to the forward direction of the individual diodes, the procedure is such that the anodes of the
Die Schaltungsanordnung arbeitet folgendermaßen:The circuit arrangement works as follows:
Durch Ansteuerung der einzelnen Basen der bipolaren Transistoren T₁ bis Tn ist es möglich, in jeweils erforderlicher Konstellation die einzelnen Magnetventeil MV₁ bis MVn einzuschalten. Dieses ergibt eine flexible Steuerung des die Magnetventile Mv₁ bis MVn aufweisenden Einspritzsystems für Verbrennungsmotoren. In entsprechender Weise ist eine Ausschaltung der Mangetventile MV₁ bis MVn möglich, wobei über die Dioden D₁ bis Dn und den Freilauftransistor TF ein Freilaufstrom abfließen kann. Obwohl erfindungsgemäß für die Vielzahl der Magnetventile MV₁ bis MVn nur ein Freilauftransistor TF vorgesehen ist, kann dennoch mittels entsprechender Ansteuerung seiner Basis auf jeden individuellen Schaltvorgang der bipolaren Transistoren T₁ bis Tn reagiert werden.By controlling the individual bases of the
Die dargestellte Schaltungsanordnung macht fernerhin deutlich, daß durch Einschleifung des Löschkondensators CL zwischen die Sammelpunkte B und C eine entsprechende Löschung bei der unabhängig voneinander möglichen Ausschaltung der einzelnen Magnetventile MV₁ bis MVn vornehmbar ist. Auch hier ist trotz der Vielzahl der Magnetventile MV₁ bis MVn lediglich ein Löschbauteil erforderlich.The circuit arrangement shown also makes it clear that by looping in the quenching capacitor C L between the collection points B and C, a corresponding quenching can be carried out when the individual
Fernerhin wird sowohl die Schutzdiode 10 als auch der Vorwiderstand 11 gemeinschaftlich für die Vielzahl der Magnetventile MV₁ bis MVn benutzt, so daß ein optimales Verhältnis im Hinblick auf den Bauteileinsatz vorliegt, wobei gleichwohl einzelne Schaltungsteile unabhängig von anderen Schaltungsteilen gesteuert werden können.Furthermore, both the protective diode 10 and the series resistor 11 are used collectively for the large number of
Claims (3)
- Electronic circuit arrangement for driving solenoid valves of an injection system for internal-combustion engines, having additional circuitry, especially freewheeling circuitry, the solenoid valves (MV₁ to MVn) being controlled by switching elements and in each case being connected in series with a controllable switching element (3), in which circuit arrangement the connections (1, 4) of these series circuits in each case lead directly to a collecting point (A, B, C), and the connections (2) between the solenoid valves (MV₁ to MVn) and the switching elements (3) lead via diodes (D₁ to Dn) in each case to a collecting point (A, B, C), to which collecting points (A, B, C) one and the same additional circuitry (TF, CL, 10, 11), which is common to all the solenoid valves (MV₁ to MVn) is connected, the additional circuitry comprising a freewheeling switching element (6) containing a freewheeling transistor (TF), characterised in that the freewheeling switching element (6) comprises a turn-off capacitor (CL) which is connected between the collecting point (B) on the switching element side and the collecting point (C) on the diode side.
- Circuit arrangement according to Claim 1, characterised in that an operating-voltage source (9) and - in series therewith - a protection diode (10), which belongs to the additional circuitry, are connected between the collecting point (A) on the solenoid valve side and the collecting point (B) on the switching element side.
- Circuit arrangement according to one of Claims 1 and 2, characterised in that a bias resistor (11), which belongs to the additional circuitry, is connected in series with the operating-voltage source (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3844193 | 1988-12-29 | ||
| DE19883844193 DE3844193A1 (en) | 1988-12-29 | 1988-12-29 | ELECTRONIC CIRCUIT ARRANGEMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0451162A1 EP0451162A1 (en) | 1991-10-16 |
| EP0451162B1 true EP0451162B1 (en) | 1993-05-12 |
Family
ID=6370445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90900060A Expired - Lifetime EP0451162B1 (en) | 1988-12-29 | 1989-12-21 | Electronic circuit arrangement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0451162B1 (en) |
| JP (1) | JP2788676B2 (en) |
| DE (2) | DE3844193A1 (en) |
| WO (1) | WO1990007781A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105329A (en) * | 1990-02-28 | 1992-04-14 | Sandor Goldner | Apparatus for driving the armature of an electric stapler |
| DE4012353C2 (en) * | 1990-04-18 | 1994-04-14 | Lucas Ind Plc | Circuit for operating two solenoid valves |
| DE4014313A1 (en) * | 1990-05-04 | 1991-11-07 | Bosch Gmbh Robert | Operation characteristics setter for ABS braking system |
| DE4325578A1 (en) * | 1993-07-30 | 1995-02-02 | Hartmann & Laemmle Elektronisc | Switching device for an electromagnet |
| US6363895B1 (en) | 1998-08-13 | 2002-04-02 | Siemens Aktiengesellschaft | Device for controlling a regulator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3340407A (en) * | 1964-07-29 | 1967-09-05 | Gen Electric | Deenergizing circuit |
| DE2452077A1 (en) * | 1974-11-02 | 1976-05-06 | Anker Werke Ag | Control and current recovery circuit - for high speed printing electromagnets operated by pulses through semiconductor switches |
| JPS5362791A (en) * | 1976-11-17 | 1978-06-05 | Terumo Corp | Ammonium ion adsorbent |
| JPS53103684A (en) * | 1977-02-22 | 1978-09-09 | Yasuo Dezuki | Method of and device for removing detrimental material in reserved blood |
-
1988
- 1988-12-29 DE DE19883844193 patent/DE3844193A1/en not_active Withdrawn
-
1989
- 1989-12-21 EP EP90900060A patent/EP0451162B1/en not_active Expired - Lifetime
- 1989-12-21 JP JP2500691A patent/JP2788676B2/en not_active Expired - Lifetime
- 1989-12-21 WO PCT/DE1989/000785 patent/WO1990007781A1/en active IP Right Grant
- 1989-12-21 DE DE9090900060T patent/DE58904371D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OFD JAPAN, Vol. 7, No. 140, (E-182)(1285), 18 June 1983, & JP-A-58 54611 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3844193A1 (en) | 1990-07-05 |
| WO1990007781A1 (en) | 1990-07-12 |
| JPH04502535A (en) | 1992-05-07 |
| EP0451162A1 (en) | 1991-10-16 |
| DE58904371D1 (en) | 1993-06-17 |
| JP2788676B2 (en) | 1998-08-20 |
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