EP0046479A2 - Circuit for a value with an electromagnetic control rod for idling speed control - Google Patents

Circuit for a value with an electromagnetic control rod for idling speed control Download PDF

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Publication number
EP0046479A2
EP0046479A2 EP81102476A EP81102476A EP0046479A2 EP 0046479 A2 EP0046479 A2 EP 0046479A2 EP 81102476 A EP81102476 A EP 81102476A EP 81102476 A EP81102476 A EP 81102476A EP 0046479 A2 EP0046479 A2 EP 0046479A2
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EP
European Patent Office
Prior art keywords
input
speed
differential amplifier
electrical
idling speed
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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
Application number
EP81102476A
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German (de)
French (fr)
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EP0046479A3 (en
EP0046479B1 (en
Inventor
Harald Collonia
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Mannesmann VDO AG
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Mannesmann VDO AG
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Publication of EP0046479A2 publication Critical patent/EP0046479A2/en
Publication of EP0046479A3 publication Critical patent/EP0046479A3/en
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Publication of EP0046479B1 publication Critical patent/EP0046479B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling

Definitions

  • the invention relates to a circuit for a valve arrangement with an electromechanical actuator for regulating the idling speed of Otto engines, in particular motor vehicle engines, by means of which the effective air intake cross section can be limited, with a circuit controlling the actuator, which has a main controller, one input of which is connected to an electrical one Size is applied according to the target idle speed and the other input is acted upon by a variable corresponding to the speed.
  • Such known circuits are used to A possible - lichst low engine idle speed to adjust in particular in motor vehicles. This leads to favorable consumption and emission values.
  • a circuit for a valve arrangement for regulating the idling speed with a servomotor which is fed from a differential amplifier is known.
  • An entrance to the The differential amplifier is supplied with an electrical variable corresponding to the target idling speed.
  • a second input of the differential amplifier is connected to a speed sensor.
  • This differential amplifier accordingly applies an electrical variable to the servomotor which corresponds to the difference between the actual speed and the target idling speed.
  • the servomotor thus attempts to adjust a valve element in the valve arrangement in such a way that, by limiting the effective intake cross section, the amount of air per unit required for the target idling speed can flow through the carburetor into the engine.
  • the electrical variable corresponding to the target idle speed is superimposed by an electrical variable which is formed by an auxiliary controller, one input of which is acted upon by the output variable of the main regulator and the other input of which is affected by an electrical variable corresponding to the rotational speed.
  • the size which acts on an input of the main controller and which corresponds to the target idling speed is not a fixed size, but is increased starting from a minimum value with increasing speed. With increasing actual engine speed, the output variable of the main controller will change because regulated to a value by which the electromechanical actuator opens an air intake cross section that is slightly below the minimum amount of air required for the no-load engine at the current engine speed.
  • a setpoint control of the target idle speed therefore results in a control opening adjustment of the air intake cross section depending on the actual instantaneous engine speed.
  • the main controller is a differential amplifier, the output of which is connected to the actuator, via a capacitor and a resistor, is fed back to the negative input of the differential amplifier which is affected by a variable corresponding to the respective engine speed, an input resistor being connected upstream of this negative input and the the electrical variable corresponding to the target idling speed is connected to the positive input of the differential amplifier.
  • the secondary controller can be a differential amplifier, on the negative input, the output of the main controller and to its positive input a speed sensor is connected, which outputs a voltage proportional to the respective motor speed. It is advantageous if the output of the differential amplifier is fed back to the negative input of the differential amplifier via a resistor and an input resistor is connected upstream of the negative input. This gives the slave controller the property of a P controller.
  • the electromechanical actuator is advantageously a solenoid valve which can be adjusted directly by the output signal of the main controller.
  • the circuit shown in the figure has a main controller which is designed as a differential amplifier 1.
  • the electrical input corresponding to the speed of a motor, not shown, is applied to the negative input of the differential amplifier 1, the electrical quantity being formed by a speed sensor 2.
  • An input resistor 3 is connected upstream of the negative input of differential amplifier 1, while the output of differential amplifier 1 is fed back to the negative input of differential amplifier 1 via a capacitor 4 and a resistor 5.
  • the output of the differential amplifier 1 is also fed to a solenoid valve 6 and via an input resistor 8 to the negative input of a secondary regulator designed as a differential amplifier 7.
  • the positive input of the differential amplifier 7 is acted upon by an electrical variable which is formed by the speed sensor 2 as a function of the engine speed.
  • the output of the differential amplifier 7 is fed back to its negative input via a resistor 10. Furthermore, the output of the differential amplifier 7 is fed via a diode 11 to the positive input of the differential amplifier 1, which is also acted upon by the electrical quantity in accordance with a target idling speed.
  • the other variable which is supplied to the differential amplifier 7 and is formed from the engine speed, corresponds to the minimum air volume required for this engine speed.
  • this output variable is fed to the positive input of the differential amplifier 1 and is superimposed on the variable corresponding to the target idling speed.
  • This total quantity thus acts as a variable quantity on the positive input of the differential amplifier 1, so that a manipulated variable acting on the solenoid valve is regulated by the air volume flow which is supplied to the motor via the solenoid valve, as a function of the motor speed at a certain distance below the minimally required air quantity of the no-load engine.

Abstract

1. Circuit arrangement for a valve arrangement with an electromechanical final control element (6) for controlling the idling speed of petrol engines, more particularly motor vehicle engines, whereby the effective air aspiration cross-section can be limited, with a circuit arrangement which controls the final control element (6) and which comprises a main controller (1), one of whose inputs can be fed with an electrical value corresponding to the desired idling speed and whose other input can be fed with an electrical value corresponding to the speed, characterised in that the electrical value corresponding to the desired idling speed has superimposed on it an electrical value which is formed by a subsidiary controller (7), one of whose inputs is fed with the output value of the main controller (1) and whose other input is fed with an electrical value corresponding to the speed, so that the desired idling speed increases from a minimum value as the engine speed rises.

Description

Die Erfindung betrifft eine Schaltung für eine Uentilanordnung mit elektromechanischem Stellglied zur Regelung der Leerlaufdrehzahl von Otto-Motoren, insbesondere von Kraftfahrzeugmotoren, durch die der wirksame Luftansaugquerschnitt begrenzbar ist, mit einer das Stellglied ansteuernden Schaltung, die einen Hauptregler aufweist, dessen einer Eingang mit einer elektrischen Größe entsprechend der Solleerlaufdrehzahl beaufschlagt ist und dessen anderer Eingang von einer der Drehzahl entsprechenden Größe beaufschlagt ist.The invention relates to a circuit for a valve arrangement with an electromechanical actuator for regulating the idling speed of Otto engines, in particular motor vehicle engines, by means of which the effective air intake cross section can be limited, with a circuit controlling the actuator, which has a main controller, one input of which is connected to an electrical one Size is applied according to the target idle speed and the other input is acted upon by a variable corresponding to the speed.

Derartige bekannte Schaltungen werden verwandt, um eine mög- lichst geringe Motorleerlaufdrehzahl, insbesondere bei Kraftfahrzeugen einzustellen. Dies führt zu günstigen Verbrauchs-und Emissionswerten.Such known circuits are used to A possible - lichst low engine idle speed to adjust in particular in motor vehicles. This leads to favorable consumption and emission values.

Dazu ist eine Schaltung für eine Ventilanordnung zur Regelung der Leerlaufdrehzahl mit einem Stellmotor bekannt, der aus einem Differenzverstärker gespeist wird. Ein Eingang des Differenzverstärkers wird mit einer elektrischen Größe entsprechend der Solleerlaufdrehzahl beaufschlagt. Ein zweiter Eingang des Differenzverstärkers steht mit einem Drehzahlgeber in Verbindung. Durch diesen Differenzverstärker wird demgemäß der Stellmotor mit einer elektrischen Größe beaufschlagt, welche der Differenz der Istdrehzahl von der Sollleerlaufdrehzahl entspricht. Damit versucht der Stellmotor ein Uentilelement in der Uentilanordnung so zu verstellen, daß durch Begrenzung des wirksamen Ansaugquerschnitts die für die Solleerlaufdrehzahl erforderliche Luftmenge pro Einheit durch den Vergaser in den Motor strömen kann.For this purpose, a circuit for a valve arrangement for regulating the idling speed with a servomotor which is fed from a differential amplifier is known. An entrance to the The differential amplifier is supplied with an electrical variable corresponding to the target idling speed. A second input of the differential amplifier is connected to a speed sensor. This differential amplifier accordingly applies an electrical variable to the servomotor which corresponds to the difference between the actual speed and the target idling speed. The servomotor thus attempts to adjust a valve element in the valve arrangement in such a way that, by limiting the effective intake cross section, the amount of air per unit required for the target idling speed can flow through the carburetor into the engine.

Kommt es bei dieser bekannten Anordnung von einem hohen Drehzahlniveau aus zu einem schnellen Abfall der Drehzahl, z.B. beim Loslassen des Gaspedals, so kann dabei die Drehzahl leicht unter eine bestimmte Mindestdrehzahl fallen unter der der Motor ausgeht.If this known arrangement results in a rapid drop in speed, e.g. when the accelerator pedal is released, the engine speed can easily drop below a certain minimum engine speed.

Es ist daher Aufgabe der Erfindung eine Schaltung nach dem Oberbegriff zu schaffen, durch die eine einwandfreie Regelung der Leerlaufdrehzahl gewährleistet ist.It is therefore an object of the invention to provide a circuit according to the preamble, which ensures proper control of the idle speed.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die elektrische Größe entsprechend der Solleerlaufdrehzahl von einer elektrischen Größe überlagert ist, die von einem Hilfsregler gebildet ist, dessen einer Eingang von der Ausgangsgröße des Hauptreglers und dessen anderer Eingang von einer der Drehzahl entsprechenden elektrischen Größe beaufschlagt ist. Bei dieser erfindungsgemäßen Ausbildung ist die den einen Eingang des Hauptreglers beaufschlagende GröBe,die der Solleerlaufdrehzahl entspricht, keine festliegende Größe, sondern sie wird ausgehend von einem Mindestwert mit steigender Drehzahl erhöht. Dabei wird mit steigender tatsächlicher Motordrehzahl die Ausgangsgröße des Hauptreglers jeweils auf einen Wert geregelt, durch den das elektromechanische Stellglied einen Luftansaugquerschnitt öffnet, der leicht unterhalb der minimal notwendigen Luftmenge des lastlosen Motors bei der momentanen Motordrehzahl liegt.This object is achieved in that the electrical variable corresponding to the target idle speed is superimposed by an electrical variable which is formed by an auxiliary controller, one input of which is acted upon by the output variable of the main regulator and the other input of which is affected by an electrical variable corresponding to the rotational speed. In this embodiment according to the invention, the size which acts on an input of the main controller and which corresponds to the target idling speed is not a fixed size, but is increased starting from a minimum value with increasing speed. With increasing actual engine speed, the output variable of the main controller will change because regulated to a value by which the electromechanical actuator opens an air intake cross section that is slightly below the minimum amount of air required for the no-load engine at the current engine speed.

Es erfolgt also durch eine Sollwertregelung der Solleerlaufdrehzahl eine Stellöffnungsnachführung des Luftansaugquerschnitts abhängig von der tatsächlichen momentanen Motordrehzahl.A setpoint control of the target idle speed therefore results in a control opening adjustment of the air intake cross section depending on the actual instantaneous engine speed.

Dieser Vorgang erfolgt genauso beim Abfallen der Motordrehzahl, so daß der Luftansaugquerschnitt sich kontinuierlich mit der Motordrehzahl ändert. Dadurch kann die Motordrehzahl auch bei einem raschen Abfallen von einer höheren Drehzahl aus nicht unter die Mindestleerlaufdrehzahl absinken.This process also takes place when the engine speed drops, so that the air intake cross section changes continuously with the engine speed. As a result, the engine speed cannot drop below the minimum idle speed even if it drops rapidly from a higher speed.

Ist die vom Hilfsregler gebildete,die elektrische Größe entsprechend der Solleerlaufdrehzahl überlagernde elektrische Größe über eine Diode dem Eingang des Hauptreglers zugeführt, so wird die Ausgangsgröße des Hauptreglers und damit der Luftansaugquerschnitt auf ein Mindestmaß begrenzt, das für die Leerlaufdrehzahl erforderlich ist. In einer vorteilhaften Ausbildung der Erfindung ist der Hauptregler ein Differenzverstärker, dessen mit dem Stellglied verbundenerAusgang über einen Kondensator und einen Widerstand zu dem von einer der jeweiligen Motordrehzahl entsprechenden Größe beaufschlagten negativen Eingang des Differenzverstärkers rückgeführt ist, wobei diesem negativem Eingang ein Eingangswiderstand vorgeschaltet ist und die der Solleerlaufdrehzahl entsprechende elektrische Größe an dem positiven Eingang des Differenzverstärkers angeschlossen ist. Durch diese Ausbildung erhält der Hauptregler die Eigenschaften eines PI-Reglers.If the electrical quantity formed by the auxiliary regulator and superimposed on the electrical quantity corresponding to the nominal idling speed is supplied to the input of the main regulator via a diode, the output quantity of the main regulator and thus the air intake cross section is limited to a minimum that is required for the idling speed. In an advantageous embodiment of the invention, the main controller is a differential amplifier, the output of which is connected to the actuator, via a capacitor and a resistor, is fed back to the negative input of the differential amplifier which is affected by a variable corresponding to the respective engine speed, an input resistor being connected upstream of this negative input and the the electrical variable corresponding to the target idling speed is connected to the positive input of the differential amplifier. This configuration gives the main controller the properties of a PI controller.

Der Nebenregler kann ein Differenzverstärker sein, an dessen negativem Eingang der Ausgang des Hauptreglers und an dessen positivem Eingang ein Drehzahlgeber angeschlossen ist, der eine zur jeweiligen Motordrehzahl proportionale Spannung abgibt. Dabei ist es vorteilhaft, wenn der Ausgang des Differenzverstärkers über einen Widerstand zu dem negativen Eingang des Differenzverstärkers rückgeführt ist und dem negativen Eingang ein Eingangswiderstand vorgeschaltet ist. Dadurch erhält der Nebenregler die Eigenschaft eines P-Reglers.The secondary controller can be a differential amplifier, on the negative input, the output of the main controller and to its positive input a speed sensor is connected, which outputs a voltage proportional to the respective motor speed. It is advantageous if the output of the differential amplifier is fed back to the negative input of the differential amplifier via a resistor and an input resistor is connected upstream of the negative input. This gives the slave controller the property of a P controller.

Das elektromechanische Stellglied ist vorteilhafterweise ein Magnetventil, welches durch das Ausgangssignal des Hauptreglers auf direkte Weise verstellbar ist.The electromechanical actuator is advantageously a solenoid valve which can be adjusted directly by the output signal of the main controller.

Ein Ausführungsbeispiel der Erfindung ist in der einzigen Figur der Zeichnung dargestellt.An embodiment of the invention is shown in the single figure of the drawing.

Die in der Figur dargestellte Schaltung weist einen Hauptregler auf, der als Differenzverstärker 1 ausgebildet ist. Der negative Eingang des Differenzverstärkers 1 ist mit der elektrischen Größe entsprechend der Drehzahl eines nicht dargestellten Motors beaufschlagt, wobei die elektrische Größe von einem Drehzahlgeber 2 gebildet ist. Dem negativen Eingang des Differenzverstärkers 1 ist ein Eingangswiderstand 3 vorgeschaltet, während der Ausgang des Differenzverstärkers 1 über einen Kondensator 4 und einen Widerstand 5 zu dem negativen Eingang des Differenzverstärkers 1 rückgeführt ist.The circuit shown in the figure has a main controller which is designed as a differential amplifier 1. The electrical input corresponding to the speed of a motor, not shown, is applied to the negative input of the differential amplifier 1, the electrical quantity being formed by a speed sensor 2. An input resistor 3 is connected upstream of the negative input of differential amplifier 1, while the output of differential amplifier 1 is fed back to the negative input of differential amplifier 1 via a capacitor 4 and a resistor 5.

Der Ausgang des Differenzverstärkers 1 ist außerdem einem Magnetventil 6 sowie über einen Eingangswiderstand 8 dem negativen Eingang eines als Differenzverstärker 7 ausgebildeten Nebenreglers zugeführt. Der positive Eingang des Differenzverstärkers 7 ist von einer elektrischen Größe beaufschlagt, die von dem Drehzahlgeber 2 abhängig von der Motordrehzahl gebildet wird.The output of the differential amplifier 1 is also fed to a solenoid valve 6 and via an input resistor 8 to the negative input of a secondary regulator designed as a differential amplifier 7. The positive input of the differential amplifier 7 is acted upon by an electrical variable which is formed by the speed sensor 2 as a function of the engine speed.

Der Ausgang des Differenzverstärkers 7 ist über einen Widerstand 10 zu seinem negativen Eingang zurückgeführt. Weiterhin ist der Ausgang des Differenzverstärkers 7 über eine Diode 11 dem positiven Eingang des Differenzverstärkers 1 zugeführt, der außerdem von der elektrischen Größe entsprechend einer Solleerlaufdrehzahl beaufschlagt ist.The output of the differential amplifier 7 is fed back to its negative input via a resistor 10. Furthermore, the output of the differential amplifier 7 is fed via a diode 11 to the positive input of the differential amplifier 1, which is also acted upon by the electrical quantity in accordance with a target idling speed.

Die Ausgangsgröße des Differenzverstärkers 1, die aus den Größen entsprechend der Motordrehzahl und der Solleerlaufdrehzahl gebildet wird, wird als Stellgröße dem Magnetventil 6 zugeführt..The output variable of the differential amplifier 1, which is formed from the variables corresponding to the engine speed and the target idling speed, is supplied to the solenoid valve 6 as a manipulated variable.

Außerdem wird sie auch dem negativen Eingang des Differenzverstärkers 7 zugeführt. Diese Größe entspricht dem tatsächlich am Magnetventil durchströmenden Luftvolumen.In addition, it is also fed to the negative input of the differential amplifier 7. This size corresponds to the air volume actually flowing through the solenoid valve.

Die andere dem Differenzverstärker 7 zugeführte aus der Motordrehzahl gebildete Größe, entspricht dem für diese Motordrehzahl erforderlichen Mindestluftvolumen.The other variable, which is supplied to the differential amplifier 7 and is formed from the engine speed, corresponds to the minimum air volume required for this engine speed.

Ist das Niveau der Ausgangsgröße des Differenzverstärkers 7 höher als das Niveau der Größe entsprechend der Solleerlaufdrehzahl, so wird diese Ausgangsgröße dem positiven Eingang des Differenzverstärkers 1 zugeführt und überlagert die der Solleerlaufdrehzahl entsprechende Größe. Diese Gesamtgröße beaufschlagt somit als variable Größe den positiven Eingang des Differenzverstärkers 1, so daß eine das Magnetventil beaufschlagende Stellgröße geregelt wird durch die der Luftvolumenstrom,der über das Magnetventil dem Motor zugeführt wird, in Abhängigkeit von der Motordrehzahl mit bestimmtem Abstand unter der minimal notwendigen Luftmenge des lastlosen Motors liegt.If the level of the output variable of the differential amplifier 7 is higher than the level of the variable corresponding to the target idling speed, this output variable is fed to the positive input of the differential amplifier 1 and is superimposed on the variable corresponding to the target idling speed. This total quantity thus acts as a variable quantity on the positive input of the differential amplifier 1, so that a manipulated variable acting on the solenoid valve is regulated by the air volume flow which is supplied to the motor via the solenoid valve, as a function of the motor speed at a certain distance below the minimally required air quantity of the no-load engine.

Claims (6)

1. Schaltung für eine Ventilanordnung mit elektromechanischem Stellglied zur Regelung der Leerlaufdrehzahl von Otto-Motoren, insbesondere von Kraftfahrzeugmotoren, durch die der wirksame Luftansaugquerschnitt begrenzbar ist, mit einer das Stellglied ansteuernden Schaltung, die einen Hauptregler aufweist, dessen einer Eingang mit einer elektrischen Größe entsprechend der Solleerlaufdrehzahl beaufschlagt ist und dessen anderer Eingang von einer der Drehzahl entsprechenden Größe beaufschlagt ist, dadurch gekennzeichnet, daß die elektrische Größe entsprechend der Solleerlaufdrehzahl von einer elektrischen Größe überlagert ist, die von einem Hilfsregler gebildet ist, dessen einer Eingang von der Ausgangsgröße des Hauptreglers und dessen anderer Eingang von einer der Drehzahl entsprechenden elektrischen Größe beaufschlagt ist.1. Circuit for a valve arrangement with an electromechanical actuator for regulating the idling speed of Otto engines, in particular motor vehicle engines, by means of which the effective air intake cross section can be limited, with a circuit controlling the actuator, which has a main regulator, the input of which is of an electrical size the target idle speed is acted upon and the other input is acted upon by a variable corresponding to the speed, characterized in that the electrical variable corresponding to the target idle speed is superimposed by an electrical variable which is formed by an auxiliary controller, one input of which is based on the output variable of the main regulator and whose other input is acted upon by an electrical variable corresponding to the speed. 2. Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß die vom Hilfsregler gebildete, die elektrische Größe entsprechend der Solleerlaufdrehzahl überlagernde elektrisehe Größe über eine Diode (11) dem Eingang des Hauptreglers zugeführt ist.2. Circuit according to claim 1, characterized in that the electri formed by the auxiliary controller, the electrical quantity corresponding to the target idling speed superimposed see size via a diode (11) is fed to the input of the main controller. 3. Schaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Hauptregler ein Differenzverstärker (1) ist, dessen mit dem Stellglied verbundenerAusgang über einen Kondensator (4) und einen Widerstand (5) zu dem von einer der jeweiligen Motordrehzahl entsprechenden Größe beaufschlagten negativen Eingang des Differenzverstärkers (1) . rückgeführt ist, wobei diesem negativen Eingang ein Eingangswiderstand (3) vorgeschaltet ist und die der Solleerlaufdrehzahl entsprechende elektrische Größe an den positiven Eingang des Differenzverstärkers (1) angeschlossen ist.3. Circuit according to one of the preceding claims, characterized in that the main controller is a differential amplifier (1), the output of which is connected to the actuator via a capacitor (4) and a resistor (5) to the negative applied by a variable corresponding to the respective engine speed Input of the differential amplifier (1). is fed back, an input resistor (3) being connected upstream of this negative input and the electrical variable corresponding to the target idling speed being connected to the positive input of the differential amplifier (1). 4. Schaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Nebenregler ein Differenzverstärker (7) ist, an dessen negativem Eingang der Ausgang des Hauptreglers und an dessen positivem Eingang ein Drehzahlgeber (2) angeschlossen ist, der eine zur jeweiligen Motordrehzahl proportionale Spannung abgibt.4. Circuit according to one of the preceding claims, characterized in that the secondary controller is a differential amplifier (7), to the negative input of which the output of the main controller and to the positive input of which a speed sensor (2) is connected, which has a voltage proportional to the respective engine speed delivers. 5. Schaltung nach Anspruch 4, dadurch gekennzeichnet, daß der Ausgang des Differenzverstärkers (7) über einen Widerstand (10) zu dem negativen Eingang des Differenzverstärkers (7) rückgeführt ist und dem negativen Eingang ein Eingangswiderstand (8) vorgeschaltet ist.5. A circuit according to claim 4, characterized in that the output of the differential amplifier (7) is fed back via a resistor (10) to the negative input of the differential amplifier (7) and an input resistor (8) is connected upstream of the negative input. 6. Schaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das elektromechanische Stellglied ein Magnetventil (6) ist.6. Circuit according to one of the preceding claims, characterized in that the electromechanical actuator is a solenoid valve (6).
EP81102476A 1980-08-22 1981-04-02 Circuit for a value with an electromagnetic control rod for idling speed control Expired EP0046479B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803031682 DE3031682A1 (en) 1980-08-22 1980-08-22 CIRCUIT FOR A VALVE ARRANGEMENT WITH ELECTROMECHANICAL ACTUATOR FOR CONTROLLING THE IDLE SPEED
DE3031682 1980-08-22

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EP0046479A2 true EP0046479A2 (en) 1982-03-03
EP0046479A3 EP0046479A3 (en) 1982-06-09
EP0046479B1 EP0046479B1 (en) 1984-07-11

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EP81102476A Expired EP0046479B1 (en) 1980-08-22 1981-04-02 Circuit for a value with an electromagnetic control rod for idling speed control

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DE (2) DE3031682A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP0194019A2 (en) * 1985-02-25 1986-09-10 General Motors Corporation Engine idle speed control system

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE3226283A1 (en) * 1982-07-14 1984-01-19 Vdo Adolf Schindling Ag, 6000 Frankfurt IDLE CONTROLLER, IN PARTICULAR FOR MOTOR VEHICLES

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FR2021604A1 (en) * 1968-10-25 1970-07-24 Bosch
FR2025516A1 (en) * 1968-12-06 1970-09-11 Brico Eng
FR2223739A1 (en) * 1973-03-31 1974-10-25 Bbc Brown Boveri & Cie
FR2277980A1 (en) * 1974-07-09 1976-02-06 Lucas Industries Ltd FUEL SUPPLY CONTROL SYSTEMS FOR GAS TURBINE ENGINES

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FR2021604A1 (en) * 1968-10-25 1970-07-24 Bosch
FR2025516A1 (en) * 1968-12-06 1970-09-11 Brico Eng
FR2223739A1 (en) * 1973-03-31 1974-10-25 Bbc Brown Boveri & Cie
FR2277980A1 (en) * 1974-07-09 1976-02-06 Lucas Industries Ltd FUEL SUPPLY CONTROL SYSTEMS FOR GAS TURBINE ENGINES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194019A2 (en) * 1985-02-25 1986-09-10 General Motors Corporation Engine idle speed control system
EP0194019A3 (en) * 1985-02-25 1986-10-22 General Motors Corporation Engine idle speed control system

Also Published As

Publication number Publication date
EP0046479A3 (en) 1982-06-09
EP0046479B1 (en) 1984-07-11
DE3164669D1 (en) 1984-08-16
DE3031682A1 (en) 1982-04-01

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