DE3730523A1 - METHOD AND DEVICE FOR DETECTING THE SWITCHING TIMES OF SOLENOID VALVES - Google Patents
METHOD AND DEVICE FOR DETECTING THE SWITCHING TIMES OF SOLENOID VALVESInfo
- Publication number
- DE3730523A1 DE3730523A1 DE19873730523 DE3730523A DE3730523A1 DE 3730523 A1 DE3730523 A1 DE 3730523A1 DE 19873730523 DE19873730523 DE 19873730523 DE 3730523 A DE3730523 A DE 3730523A DE 3730523 A1 DE3730523 A1 DE 3730523A1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic winding
- induction
- winding
- solenoid valve
- magnetic
- 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
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 42
- 230000006698 induction Effects 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
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- 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
- F02D41/20—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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- 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
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1684—Armature position measurement using coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H2047/008—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current with a drop in current upon closure of armature or change of inductance
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Kontrolle der mechanischen Bewegung eines Magnetventilankers, für dessen Betätigung eine Magnetwicklung vorgesehen ist, mittels eines vom Strom durch die Magnetwicklung abgeleiteten Signals sowie eine Einrichtung zur Durchführungs dieses Verfahrens. Beispielsweise aus der DE-AS 22 51 472 ist eine derartige Einrichtung bekannt, bei der in Reihe zur Magnetwicklung ein Widerstand geschaltet ist, an den eine Differenzierschaltung angeschlossen ist, welcher ein Schwellwertschalter nachfolgt, der daher auf kurz fristige Änderungen des Stromanstiegs durch die Magnet wicklung reagiert. Mit der bekannten Einrichtung soll festgestellt werden, ob sich der Magnetanker tatsächlich in Bewegung setzt. Zur Überwachung dieses Vorgangs wird der Effekt ausgenutzt, daß die Bewegung des Magnetankers bei einem bestimmten Stromwert einsetzt und eine Indukti vitätsänderung zur Folge hat, aufgrund derer die zeitliche Ableitung des Strom durch die Magnetspule, der mittels des Spannungsabfalls am Widerstand gemessen wird, ihr Vorzeichen ändert. Zwar eignet sich die bekannte Ein richtung für eine grundsätzliche derartige Funktions kontrolle, um festzustellen, ob der Magnetanker beweg lich ist, jedoch ist nur das Einsetzen der Bewegung fest stellbar.The invention relates to a method for controlling the mechanical movement of a solenoid valve armature, for its Actuation is provided by means of a magnetic winding one derived from the current through the magnetic winding Signals and a device for performing this Procedure. For example from DE-AS 22 51 472 such a device known in the series a resistor is connected to the magnetic winding which a differentiating circuit is connected, which a threshold switch follows, which is therefore short early changes in the current rise due to the magnet winding reacts. With the known device should be determined whether the magnet armature is actually sets in motion. To monitor this process taking advantage of the effect that the movement of the magnet armature at a certain current value and an inductor vity change, due to which the temporal Derivation of the current through the solenoid, which means of the voltage drop across the resistor is measured Sign changes. The well-known A is suitable direction for a basic such function check to see if the armature is moving Lich, but only the onset of movement is fixed adjustable.
Weiterhin ist in der älteren Anmeldung P 36 33 107.4 dieser Anmelderin ein Verfahren zur Steuerung eines elek trisch zwischen zwei Schaltstellungen gesteuerten Ventils beschrieben. Die Istschaltzeiten des Ventils werden erfaßt durch eine Schaltstellungsgebereinrichtung, die beide Schaltstellungen des Ventils signalisiert und die mit einer elektrischen Steuereinrichtung verbunden ist. Durch die Steuereinrichtung erfolgt eine Steuerung des elektrisch gesteuerten Ventils oder eine Korrektur der Steuerzeiten des Ventils. Hierzu ist das Ventil mit einem Ventilschließ glied versehen, welches gegenüber einem Führungsgehäuse isoliert und mit einer Meßspannungsquelle verbunden ist. In der offenen Stellung des Ventils liegt dieses an einem Anschlag an, der mit dem Masseanschluß der Meßspannungs quelle verbunden ist. Dagegen erfolgt in geschlossener Stellung eine Anlage des Ventilschließgliedes am Ventilsitz, der ebenfalls mit dem Masseanschluß der Meßspannungs quelle verbunden ist. Zwar lassen sich hierdurch die jeweiligen Endlagen des Ventilsschließgliedes erfassen, es hat sich jedoch herausgestellt, daß bei Einspritzsys temen für Brennkraftmaschinen, insbesondere für Diesel motoren, eine genauere Kenntnis der Schaltzeiten oder der Schaltzeitpunkte des Magnetventils erforderlich ist, um die bei derartigen Systemen geforderte Genauigkeit bei der Bemessung der Einspritzmenge besser realisieren zu können.Furthermore, in the earlier application P 36 33 107.4 this applicant a method for controlling an elec valve between two switch positions described. The actual switching times of the valve are recorded by a switch position transmitter device, both Switch positions of the valve are signaled and the an electrical control device is connected. By the control device controls the electrical controlled valve or a correction of the timing of the valve. For this the valve is with a valve closing member provided, which opposite a guide housing is isolated and connected to a measuring voltage source. In the open position of the valve this is due to one Stop at that with the ground connection of the measuring voltage source is connected. In contrast, takes place in closed Position of the valve closing element on the valve seat, which also with the ground connection of the measuring voltage source is connected. This allows the record the respective end positions of the valve closing element, however, it has been found that injection systems systems for internal combustion engines, in particular for diesel motors, a more precise knowledge of the switching times or the switching times of the solenoid valve is required, the accuracy required in such systems realize better when dimensioning the injection quantity to be able to.
Das erfindungsgemäße Verfahren zur Kontrolle der mechanischen Bewegung eines Magnetventilankers, für dessen Betätigung eine Magnetwicklung vorgesehen ist, mittels eines vom Strom durch die Magnetwicklung abgeleiteten Signals, bei welchem die Induktion der Magnetwicklung überwacht und mittels einer externen Energiequelle die Induktivitäts änderungen an interessierenden Schaltpunkten des Magnetven tils auf einen feststellbaren Signalpegel angehoben werden, hat insbesondere den Vorteil, daß nunmehr Schaltpunkte des Magnetventilankers beziehungsweise die dazugehörigen Zeiten festgestellt werden können, die nach dem Stand der Technik nicht direkt überwacht werden können. Hierzu zählen beispielsweise im Ausschaltbereich des Magnetventils der Schaltzeitpunkt "BOP", der den Beginn des Ausschalt vorgangs angibt, oder der Schaltzeitpunkt "EIP", das tatsächliche Ende der Einspritzung. Ein weiterer Vorteil des erfindungsgemäßen Verfahrens liegt darin, daß sich dieses meßtechnisch auf zahlreiche unterschiedliche Arten verwirklichen läßt. Insgesamt wird mit dem erfindungs gemäßen Verfahren daher die Genauigkeit der Bemessung der Einspritzmenge wesentlich erhöht, da nunmehr auch zusätzliche Parameter berücksichtigt werden können, und hierdurch erfolgt eine wesentliche Verbesserung der Steuer- beziehungsweise Regelkreise für solche Systeme.The inventive method for checking the mechanical Movement of a solenoid valve armature for its actuation a magnetic winding is provided by means of a Current derived by the magnetic winding signal, which monitors the induction of the magnetic winding and the inductance by means of an external energy source Changes in the switching points of interest of the magnetic circuit tils be raised to a detectable signal level, has the particular advantage that now switching points of the solenoid valve armature or the associated Times can be determined according to the state technology cannot be monitored directly. For this count, for example, in the switch-off area of the solenoid valve the switching time "BOP", which is the beginning of the switch-off indicates operation, or the switching time "EIP", the actual end of injection. Another advantage of the inventive method is that this metrologically in numerous different ways can be realized. Overall, the invention method according to the accuracy of the design the injection quantity significantly increased, since now also additional parameters can be taken into account, and this results in a significant improvement in tax or control loops for such systems.
Vorteilhafterweise wird gemäß der Erfindung die Induktion der Magnetwicklung direkt überwacht. Hierdurch ergibt sich ein besonders geringer Bauteilaufwand und daher eine besonders geringe Störanfälligkeit.According to the invention, induction is advantageous directly monitors the magnetic winding. This gives a particularly low component effort and therefore a particularly low susceptibility to failure.
Es kann jedoch auch wünschenswert sein, die Induktion der Magnetwicklung mit einer Meßspule zu überwachen, um beispielsweise für ein spezielles Meßproblem durch Auslegung der Meßspule besonders vorteilhafte Bedingungen zu schaffen. Hierzu wird vorteilhafterweise die Induktion der Magnetwicklung mit einem Übertrager überwacht, dessen Primärseite die Magnetwicklung und dessen Sekundärseite die Meßspule bildet.However, induction may also be desirable monitor the magnetic winding with a measuring coil, for example for a special measurement problem Design of the measuring coil particularly advantageous conditions to accomplish. Induction is advantageously used for this purpose monitors the magnetic winding with a transformer, the Primary side of the magnetic winding and its secondary side the measuring coil forms.
Die voranstehend in bezug auf das erfindungsgemäße Ver fahren geschilderten Vorteile gelten sinngemäß auch für die Einrichtung gemäß der vorliegenden Erfindung zur Kontrolle der mechanischen Bewegung eines Magnetventil ankers, für dessen Betätigung eine Magnetwicklung vorgesehen ist, mittels eines vom Strom durch die Magnetwicklung abgeleiteten Signals, wobei eine an die Magnetwicklung angeschlossene Koppeleinrichtung zum Nachweis einer Induk tionsänderung mit einer nachgeschalteten Energiequelle zur Anhebung der Induktionsänderung auf einen feststell baren Signalpegel vorgesehen ist.The above with respect to the Ver Advantages described apply mutatis mutandis to the device according to the present invention for Control of the mechanical movement of a solenoid valve anchors, for the actuation of which a magnetic winding is provided is by means of a current through the magnetic winding derived signal, one to the magnet winding connected coupling device for the detection of an induct tion change with a downstream energy source to increase the induction change to a ble signal level is provided.
Demzufolge kann auch bei der erfindungsgemäßen Einrichtung entweder durch direkten Anschluß an die Magnetwicklung die Induktionsänderung detektiert werden oder aber gemäß einer vorteilhaften Ausgestaltung der Erfindung ein Über trager vorgesehen sein, dessen Primärseite die Magnet wicklung bildet und der sekundärseitig eine Meßspule aufweist, an die die Koppeleinrichtung angeschlossen ist.Accordingly, can also with the device according to the invention either by direct connection to the magnetic winding the induction change can be detected or according to an advantageous embodiment of the invention an over be provided carrier, the primary side of the magnet winding forms and the secondary side a measuring coil to which the coupling device is connected is.
Die Erfindung wird nachstehend anhand eines zeichnerisch dargestellten bevorzugten Ausführungsbeispiels näher erläutert, aus welchem weitere Vorteile und Merkmale hervorgehen. In Fig. 1 ist schematisch der Zusammenhang zwischen Induktivität einer Magnetspule und der Frequenz bei geschlossenem beziehungsweise geöffnetem Magnetventil dargestellt, Fig. 2a zeigt ein schematisches Blockschalt bild eines Magnetventils mit Magnetwicklung und zugeordneter Ansteuerschaltung, Fig. 2b eine erste bevorzugte Aus führungsform der Erfindung mit direkter Ankopplung der Nachweisschaltung an die Magnetwicklung und Fig. 2c eine weitere bevorzugte Ausführungsform der Erfindung mit einem Übertrager zwischen Magnetwicklung und Auswerte schaltung. In Fig. 3 sind beispielhaft Signale in ihrer zeitlichen Abhängigkeit dargestellt, die bei der in Fig. 2c dargestellten Ausführungsform der Erfindung gemessen wurden.The invention is explained in more detail below with the aid of a preferred exemplary embodiment shown in the drawing, from which further advantages and features emerge. In Fig. 1, the relationship between the inductance of a solenoid and the frequency is shown with the solenoid valve closed or open, Fig. 2a shows a schematic block diagram of a solenoid valve with a magnetic winding and associated control circuit, Fig. 2b shows a first preferred embodiment of the invention with direct Coupling the detection circuit to the magnetic winding and Fig. 2c another preferred embodiment of the invention with a transformer between the magnetic winding and evaluation circuit. In Fig. 3, signals are shown as an example in their time dependence that in Fig. 2c illustrated embodiment of the invention were measured in the.
Bei dem Ausführungsbeispiel handelt es sich um eine Schal tungsanordnung zur Überwachung und Detektion von Schalt zeitpunkten eines Magnetventils in einem Einspritzsystem zur Brennstoffversorgung einer Brennkraftmaschine, insbe sondere eines Dieselmotors, beziehungsweise um das zuge hörige Verfahren.The embodiment is a scarf arrangement for monitoring and detection of switching times of a solenoid valve in an injection system for supplying fuel to an internal combustion engine, esp special of a diesel engine, or to the proper procedures.
In Fig. 1 ist schematisch der grundsätzliche Zusammenhang zwischen der Induktivität L eines Magnetventils und der Frequenz f dargestellt. Zwischen dem geschlossenen Zu stand des Magnetventils, der durch eine durchgezogene Kurve dargestellt ist, und dem geöffneten Zustand (strich punktierte Kurve) besteht ein deutlicher Unterschied. Grundsätzlich verhältnismäßig einfach ist die Feststellung eines Schaltpunkts des Magnetventils solange, wie Energie im Magnetkreis vorhanden ist. Das Ausschaltverhalten, bei welchem die Magnetspule nicht mehr von einem Strom durchflossen ist, läßt sich jedoch nicht so einfach über wachen, was besonders bei solchen schnell schaltenden Magnetventilen eine Rolle spielt, bei denen - gegebenenfalls durch zusätzliche Schaltungsmaßnahmen - besondere Vorkehrungen getroffen wurden, um die Energie in das Magnetsystem schnell hinein- als auch wieder herauszubringen (nieder induktive Systeme), um besonders schnelle Schaltvorgänge zu erreichen.In Fig. 1 the basic relationship between the inductance L of a solenoid valve and the frequency f is shown schematically. There is a clear difference between the closed state of the solenoid valve, which is represented by a solid curve, and the open state (dash-dotted curve). Basically, it is relatively simple to determine a switching point of the solenoid valve as long as there is energy in the magnetic circuit. The switch-off behavior, in which the solenoid is no longer flowed through by a current, can not be monitored so easily, which plays a role especially in such fast-switching solenoid valves, in which - if necessary by additional circuitry measures - special precautions have been taken to ensure that Bringing energy into and out of the magnet system quickly (low inductive systems) in order to achieve particularly fast switching processes.
Fig. 2a zeigt schematisch stark vereinfacht die übliche Beschaltung eines Magnetventils MV. Zur Betätigung des Magnetankers, also des Schließglieds, ist eine Magnetspule L vorgesehen, die zwischen eine Versorgungsspannung U B und eine Leistungsendstufe geschaltet ist, deren anderer Anschluß an Masse liegt. In den Fig. 2a, b, c ist diese Leistungsendstufe symbolisch durch einen Endstufen transistor T dargestellt. Die Magnetspule L ist daher zwischen die Versorgungsspannung U B und den Kollektor des Transistors T geschaltet und der Emitter des Transis tors T liegt an Masse. Die Basis des Transistors T ist zur getakteten Stromversorgung der Magnetspule L an ein Steuergerät 10 angeschlossen, welches ein Taktsignal an die Basis abgibt. Fig. 2a shows schematically the simplified wiring of a solenoid valve MV . To actuate the magnet armature, that is to say the closing element, a magnet coil L is provided, which is connected between a supply voltage U B and a power output stage, the other connection of which is connected to ground. This output stage is shown in Figs. 2a, b, c symbolically by a transistor T amplifiers shown. The solenoid L is therefore connected between the supply voltage U B and the collector of the transistor T and the emitter of the transistor T is grounded. The base of the transistor T is connected to a control unit 10 , which emits a clock signal to the base, for the clocked power supply of the magnetic coil L.
Bei den bevorzugten Ausführungsformen der erfindungsge mäßen Einrichtung, welche in Fig. 2b und 2c dargestellt sind, ist die Beschaltung der Magnetspule L ebenso wie in Fig. 2a, jedoch ist zur Vereinfachung der Darstellung das Steuergerät 10 von Fig. 2a in den Fig. 2b und 2c weggelassen.In the preferred embodiments of the device according to the invention, which are shown in FIGS . 2b and 2c, the wiring of the solenoid L is the same as in FIG. 2a, but to simplify the illustration the control device 10 of FIG. 2a is in FIG. 2b and 2c omitted.
Bei der ersten Ausführungsform der Erfindung, welche in Fig. 2b gezeigt ist, ist direkt an die beiden Anschluß punkte der Magnetspule L des Magnetventils eine Einrichtung A angeschlossen, welche auf geeignete Weise eine Kopplung und Detektion der Induktivitätsänderung der Magnetspule L vornimmt. Der Ausgang der Kopplungseinrichtung A ist an den Eingang eines Verstärkers B angeschlossen, dem eine Anzeigevorrichtung C nachgeschaltet ist. In the first embodiment of the invention, which is shown in Fig. 2b, a device A is connected directly to the two connection points of the solenoid L of the solenoid valve, which device performs a coupling and detection of the change in inductance of the solenoid L in a suitable manner. The output of the coupling device A is connected to the input of an amplifier B , which is followed by a display device C.
Von dieser ersten Ausführungsform unterscheidet sich die in Fig. 2c gezeigte weitere vorteilhafte Ausführungs form der Erfindung durch die Art der Auskopplung des Induktivitätssignals von der Magnetspule L. Hierzu ist in Fig. 2c ein Übertrager Ü vorgesehen, dessen Primär wicklung von der Magnetwicklung L gebildet wird und dessen Sekundärwicklung eine Meßspule L 1 ist. Hieran schließen sich die Kopplungseinrichtung A, die eine Detektion der Induktivitätsänderung vornimmt, sowie der nachgeschaltete Verstärker B und die diesem wiederum nachgeschaltete Anzeigevorrichtung C an, wie sie bereits voranstehend im Zusammenhang mit Fig. 2b besprochen wurden.The further advantageous embodiment of the invention shown in FIG. 2c differs from this first embodiment by the way in which the inductance signal is coupled out from the magnetic coil L. For this, a transformer U in FIG. 2c is provided, the primary winding of the magnet coil L is formed and the secondary winding of a measuring coil L 1. This is followed by the coupling device A , which detects the change in inductance, as well as the downstream amplifier B and the display device C , which is in turn connected downstream thereof, as have already been discussed above in connection with FIG. 2b.
Die Funktionsweise der in den Fig. 2b und 2c dargestell ten Ausführungsformen der erfindungsgemäßen Einrichtung wird aus dem Zeitdiagramm gemäß Fig. 3 deutlich, welches die zeitliche Abhängigkeit von Signalintensitäten zeigt, welche bei der Fig. 2c gezeigten Ausführungsform auftreten; entsprechendes gilt sinngemäß für die Ausführungsform gemäß Fig. 2b, da sich die Art der Ankopplung des Induk tivitätsignals der Magnetspule L nicht grundsätzlich auf die in Fig. 3 dargestellten Signale auswirkt.The functioning of the embodiments of the device according to the invention shown in FIGS. 2b and 2c is clear from the time diagram according to FIG. 3, which shows the temporal dependence on signal intensities which occur in the embodiment shown in FIG. 2c; the same applies analogously to the embodiment according to FIG. 2b, since the type of coupling of the inductance signal of the magnet coil L does not fundamentally affect the signals shown in FIG. 3.
Fig. 3 zeigt schematisch den Zusammenhang zwischen den Steuerimpulsen, welche an der Basis des Transistors T bei den besprochenen Ausführungsformen anliegen, sowie dem Strom durch die Magnetspule L und dem von der Koppelein richtung A abgenommenen und in der Anzeigevorrichtung C dargestellten Spannungssignal an der Meßspule L 1 der Ausführungsform gemäß Fig. 2c. Fig. 3 shows schematically the relationship between the control pulses which are applied to the base of the transistor T in the embodiments discussed, and the current through the solenoid L and the direction A removed from the Koppelein and shown in the display device C voltage signal at the measuring coil L. 1 of the embodiment according to FIG. 2c.
Der eigentlich interessierende Kurvenverlauf ist das Hubsignal der Nadel des Magnetventils. Nach Abschalten des Steuerimpulses für die Leistungsendstufe, welche die Magnetwicklung L ansteuert, fällt entsprechend der Strom durch die Magnetwicklung L ab. Danach zeigen sowohl der Steuerimpuls als auch der Strom durch die Magnetspule L einen im wesentlichen unveränderten glatten Verlauf, aus dem daher keine Informationen über das eigentlich interessierende Signal, nämlich den Nadelhub des Ankers des Magnetventils, gewonnen werden können.The curve course that is actually of interest is the stroke signal of the needle of the solenoid valve. After switching off the control pulse for the power output stage, which drives the magnetic winding L , the current through the magnetic winding L drops accordingly. Thereafter, both the control pulse and the current through the solenoid L show an essentially unchanged smooth course, from which therefore no information about the signal of interest, namely the needle stroke of the armature of the solenoid valve, can be obtained.
Wie aus der schematischen Darstellung von Fig. 3 deutlich wird, liegt der Schaltzeitpunkt "BOP", der den Beginn des tatsächlichen (mechanischen) Schließens der Magnetventil nadel angibt, zeitlich hinter dem Abschaltzeitpunkt sowohl des Steuerimpulses für die Leistungsendstufe T der Magnet wicklung L als auch des durch die Magnetwicklung L fließenden Stromsignals.As is clear from the schematic representation of Fig. 3, the switching time "BOP", which indicates the start of the actual (mechanical) closing of the solenoid valve needle, is behind the switch-off time of both the control pulse for the power output stage T of the magnet winding L and of the current signal flowing through the magnetic winding L.
Zeitlich noch später liegt der Schaltzeitpunkt "EIP", der das Ende der tatsächlichen Brennstoffeinspritzung angibt. Auch dieser Schaltzeitpunkt läßt sich daher weder durch eine Überwachung der Steuerimpulse noch eine Über wachung des Stroms durch die Magnetwicklung L feststellen.The switching time "EIP", which indicates the end of the actual fuel injection, is still later. This switching time can therefore be determined neither by monitoring the control pulses nor by monitoring the current through the magnetic winding L.
Gemäß der vorliegenden Erfindung jedoch, bei welcher direkt die Induktion der Magnetwicklung L überwacht wird, ergeben sich für die Schaltzeitpunkte BOP und EIP ent sprechende, wenn auch kleine Spannungssignale an der Meßspule L 1 von Fig. 2c. Die auftretenden Spannungs spitzen im Spannungssignal an der Meßspule L 1 liegen, wie aus Fig. 3 deutlich wird, kurz hinter den eigent lichen (mechanischen) Schaltzeitpunkten BOP und EIP; der zeitliche Abstand läßt sich gegebenenfalls durch Eichmessungen genau berücksichtigen.According to the present invention, however, in which the induction of the magnetic winding L is monitored directly, there are corresponding, if small, voltage signals at the measuring coil L 1 of FIG. 2c for the switching times BOP and EIP . The voltage peaks that occur in the voltage signal at the measuring coil L 1 are, as is clear from FIG. 3, shortly after the actual (mechanical) switching times BOP and EIP; the time interval can, if necessary, be precisely taken into account by calibration measurements.
Durch geeignete Meßverfahren beziehungsweise Meßeinrich tungen lassen sich die kleinen Spannungspeaks im Spannungs signal an der Meßspule L 1, die den Schaltzeitpunkten BOP mit 3,0 Volt beziehungsweise EIP mit einem geringeren Spannungswert zugeordnet sind, daher gemäß der vorliegenden Erfindung sicher feststellen und für Steuer- und Regelungs vorgänge bei der Brennstoffzumessung einer Einspritzanlage für eine Brennkraftmaschine ausnutzen.By means of suitable measuring methods or measuring devices, the small voltage peaks in the voltage signal at the measuring coil L 1 , which are assigned to the switching times BOP with 3.0 volts or EIP with a lower voltage value, can therefore be reliably determined according to the present invention and for control and Take advantage of control processes in the fuel metering of an injection system for an internal combustion engine.
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873730523 DE3730523A1 (en) | 1987-09-11 | 1987-09-11 | METHOD AND DEVICE FOR DETECTING THE SWITCHING TIMES OF SOLENOID VALVES |
| PCT/DE1988/000552 WO1989002648A1 (en) | 1987-09-11 | 1988-09-08 | Process and device for detecting the switching times of electrovalves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873730523 DE3730523A1 (en) | 1987-09-11 | 1987-09-11 | METHOD AND DEVICE FOR DETECTING THE SWITCHING TIMES OF SOLENOID VALVES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3730523A1 true DE3730523A1 (en) | 1989-03-30 |
| DE3730523C2 DE3730523C2 (en) | 1991-04-04 |
Family
ID=6335779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19873730523 Granted DE3730523A1 (en) | 1987-09-11 | 1987-09-11 | METHOD AND DEVICE FOR DETECTING THE SWITCHING TIMES OF SOLENOID VALVES |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3730523A1 (en) |
| WO (1) | WO1989002648A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2251472A1 (en) * | 1972-10-20 | 1974-04-25 | Bosch Gmbh Robert | CIRCUIT ARRANGEMENT FOR CONTROLLING THE MECHANICAL MOVEMENT OF A SOLENOID VALVE ARMOR |
| DE2602906A1 (en) * | 1975-02-18 | 1976-09-02 | Burroughs Corp | FAULT DETECTION DEVICE IN AN ARRANGEMENT WORKING WITH A MAGNETIC COIL |
| DE3423505A1 (en) * | 1984-05-23 | 1985-11-28 | Sodeco-Saia AG, Genf/Genève | Method and circuit arrangement for controlling an electromagnet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368501A (en) * | 1980-09-26 | 1983-01-11 | Dover Corporation | Control of electro-magnetic solenoid |
| DE3150814A1 (en) * | 1981-12-22 | 1983-06-30 | Herion-Werke Kg, 7012 Fellbach | Device for the contact-free determination of the switching position of the armature of an electromagnet |
| GB2129163B (en) * | 1982-10-21 | 1986-07-30 | Lucas Ind Plc | Liquid fuel pumping apparatus |
| DE3633107A1 (en) * | 1986-04-10 | 1987-10-15 | Bosch Gmbh Robert | FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES |
| DE3624231A1 (en) * | 1986-07-18 | 1988-01-28 | Honeywell Regelsysteme Gmbh | Method for indicating solenoid-valve operation and a circuit arrangement for carrying out the method |
-
1987
- 1987-09-11 DE DE19873730523 patent/DE3730523A1/en active Granted
-
1988
- 1988-09-08 WO PCT/DE1988/000552 patent/WO1989002648A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2251472A1 (en) * | 1972-10-20 | 1974-04-25 | Bosch Gmbh Robert | CIRCUIT ARRANGEMENT FOR CONTROLLING THE MECHANICAL MOVEMENT OF A SOLENOID VALVE ARMOR |
| DE2602906A1 (en) * | 1975-02-18 | 1976-09-02 | Burroughs Corp | FAULT DETECTION DEVICE IN AN ARRANGEMENT WORKING WITH A MAGNETIC COIL |
| DE3423505A1 (en) * | 1984-05-23 | 1985-11-28 | Sodeco-Saia AG, Genf/Genève | Method and circuit arrangement for controlling an electromagnet |
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| DE4010198A1 (en) * | 1990-03-30 | 1991-10-02 | Bosch Gmbh Robert | METHOD FOR MONITORING INDUCTIVE LOADS FOR ERRORS |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO1989002648A1 (en) | 1989-03-23 |
| DE3730523C2 (en) | 1991-04-04 |
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