EP0455880A2 - Load control apparatus - Google Patents

Load control apparatus Download PDF

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Publication number
EP0455880A2
EP0455880A2 EP90124383A EP90124383A EP0455880A2 EP 0455880 A2 EP0455880 A2 EP 0455880A2 EP 90124383 A EP90124383 A EP 90124383A EP 90124383 A EP90124383 A EP 90124383A EP 0455880 A2 EP0455880 A2 EP 0455880A2
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EP
European Patent Office
Prior art keywords
throttle valve
valve shaft
lever
potentiometer
adjusting device
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
Application number
EP90124383A
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German (de)
French (fr)
Other versions
EP0455880B2 (en
EP0455880A3 (en
EP0455880B1 (en
Inventor
Matthias Zentgraf
Gerd Hickmann
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Mannesmann VDO AG
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Mannesmann VDO AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0294—Throttle control device with provisions for actuating electric or electronic sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
    • F02D2011/103—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being alternatively mechanically linked to the pedal or moved by an electric actuator

Definitions

  • Load adjusting device with a throttle valve determining the performance of an internal combustion engine, which is connected in a rotationally fixed manner to a throttle valve shaft mounted in the throttle valve housing, the throttle valve shaft having an accelerator pedal-side mechanical linkage side and an actuating linkage side, which is assigned a coupling element for mechanically decoupling the throttle valve and an actuator motor a device for reporting the respective position of the throttle valve shaft to an electronic control device.
  • the throttle valve is usually actuated on the accelerator pedal side via a driver connected to the articulation side of the throttle valve shaft, which is connected to the vehicle pedal for this purpose by means of a Bowden cable.
  • the throttle valve shaft is controlled by an electric servomotor assigned to the load adjustment device. This is preceded by manual control by the driver. It is therefore necessary to mechanically decouple the throttle valve from the electric servomotor for defined angular ranges. Because of this decoupling, it is necessary for the control quality of the load adjustment device to report the local position of the electric servomotor. The position is recorded by the feedback device, which is assigned to a control device is.
  • the actual part of the device for the feedback on the accelerator pedal side mechanical articulation side of the load adjusting device is assigned to the position of the servomotor.
  • the invention is based on the object of designing a load adjustment device in such a way that all parts essential for the feedback device can be accommodated in a space-saving and well-protected manner.
  • the object is achieved according to the invention in that the device for feedback has a first transmission element, which is arranged on the throttle valve shaft in a rotationally fixed manner and which interacts with a first potentiometer, and in addition a second transmission element which is freely rotatably mounted on the throttle valve shaft and which interacts with a second potentiometer.
  • This has housed a very inexpensive and space-saving arrangement of all essential parts of the device for feedback on the throttle valve shaft. This is achieved in particular in that the two potentiometers and the associated transmission elements are arranged next to one another.
  • the transmission element which is arranged on the throttle valve shaft in a rotationally fixed manner, is designed as a throttle valve lever which is in contact with the first potentiometer via a wiper driver, all parts being accommodated in a housing.
  • the placement of the potentiometers, slider drivers and transmission elements in a single housing ensures good protection against damage and dirt.
  • the second transmission member which is freely rotatably mounted on the throttle valve shaft, is designed as a driver element with at least one stop, against which the throttle valve lever can be brought into contact and which is in contact with the second potentiometer via a second wiper driver, which is arranged in the same plane as that first potentiometer.
  • the second driver element has a free-wheeling segment with a stop in which the throttle valve lever is adjustable and that the driver element on the actuating articulation articulation side is drive-connected via a gear element to an electric motor that can be controlled by a control device.
  • the stop provided in the driver element ensures that the throttle valve lever is adjusted in the idle control range.
  • the corresponding setpoint information is passed on to the control device via the second potentiometer via the actual value detection device, and the electric motor for adjusting the throttle valve is thereby controlled until the throttle valve is set to the desired setpoint, which is then compared with the actual value determined by the first potentiometer. If the accelerator pedal lever and thereby the throttle valve lever are adjusted, the driver element remains in its position since the throttle valve lever can move freely due to the advantageous arrangement.
  • An advantageous embodiment of the invention is that the driver element on the actuator Articulation side is drive-connected via a gear element to an electric motor which can be controlled via a control device. This provides a drive connection between the throttle valve shaft and the electric motor in a simple manner.
  • the vehicle pedal is connected to the throttle valve lever directly or indirectly via a setpoint lever that can be freely pivoted on the throttle valve shaft in a defined area, and that a freewheel hook is arranged on the throttle valve shaft in a rotationally fixed manner, which is in a setpoint lever provided freewheel segment engages, is brought into contact with a stop spring against a stop delimiting the freewheel segment and is connected in terms of drive to the throttle valve lever via the throttle valve shaft.
  • the return spring acts on the throttle valve shaft by means of the lever arm and pulls it in the closing direction for safety reasons.
  • the setpoint lever can be used as a throttle valve drive lever and for idle control operation.
  • a very space-saving arrangement is also obtained by arranging the two potentiometers in one plane.
  • the parts shown in the frame 18 according to FIG. 1 form an actuator or a load adjustment device 10, the parts being combined in one structural unit.
  • the load adjusting device 10 includes a servomotor or electric motor 14, which is connected to a throttle valve 9 via a gear mechanism 4, which is only indicated schematically. The actuating forces of the electric motor 14 are transmitted to the throttle valve 9 via the transmission 4, and an adjustment to the desired position is thereby brought about.
  • the load adjustment device 10 can be adjusted via an accelerator pedal 1, wherein a lever 3 is adjusted by actuating the accelerator pedal 1 and is prestressed in the idling direction LL via a return spring 2.
  • the accelerator pedal 1 is connected to a driver 6 by means of a throttle cable 5, so that when the accelerator pedal 1 is actuated, the driver 6 is displaced in the direction of the full load stop VL.
  • Return springs 7 are connected to the driver 6 and bias them in the idling direction LL. As long as the throttle cable 5 is not acted upon, the driver 6 rests against the idling stop LL assigned to it. Due to the fixed arrangement of the spring 12, a direct return of the throttle valve 9 is achieved.
  • the function of the spring is described in more detail below and illustrated in Figure 2.
  • the load adjustment device has a second control element part 16 which can be connected to an electric motor 14.
  • the control element part 16 is also only indicated schematically in FIG. 1 and can correspond to a gear not shown in the drawing.
  • the two control element parts 8 and 16 are not firmly connected to one another, but can only be coupled in one direction of movement, namely in the upward direction.
  • the electronic control device 17 which contains processing, logic and control circuits, is indicated schematically.
  • the control device 17 stores values for adapting the vehicle and processes the digital or digitized values of various input variables, which then regulate the desired position of the throttle valve 9 via an analog part.
  • the electronic control device 17 cooperates with an actual value detection device 19 belonging to the control element part 8 and an actual value detection device 20 assigned to the second control element part 16 and determining the respective position of this control element part 16.
  • the first actual value detection device 19 according to FIG. 1 corresponds to a first potentiometer 23 and the second actual value detection device 20 corresponds to the potentiometer 24 shown in FIGS. 2 and 3.
  • the control device 17 has the task of all input signals, e.g. the engine speed by means of the potentiometers 23, 24 (FIG. 2) and to compare them. If, for example, the actual speed deviates from the setpoint speed, the actuator is activated until the specified speed has been reached.
  • the electronic control device 17 also detects signals via an idle contact 29, which is activated by the driver 6, when the latter comes to rest against the idle stop LL assigned to it.
  • the electronic control device 17 serves the purpose of building up a safety logic relating to the control of the first and second control element parts 8, 16. As soon as the electronic control device 17 or the electric motor 14 no longer function properly, the throttle valve 9 is moved in the direction of the maximum Idle position preloaded spring 43 in the idle emergency position LL not moved.
  • the actuator 10 shown only schematically in the frame 18 in Figure 1 is shown in detail. It consists of a throttle valve housing 30, in which a throttle valve shaft 32 with a throttle valve 9 is arranged.
  • a setpoint lever 39 is freely rotatably supported in a defined area by means of a roller bearing 51 on the end of the throttle valve shaft 32.
  • the setpoint lever 39 has a freewheel segment 41 (FIG. 4) which serves to receive a freewheel hook 40 which is fixedly arranged on a lever arm 44.
  • the actuating forces emanating from the accelerator pedal 1 are transmitted to the throttle valve shaft 32 via the setpoint lever 39 and the freewheel hook 40.
  • the freewheel hook 40 can move freely in the freewheel segment 41.
  • the setpoint lever 39 is also connected via the freewheel hook 40 on the actuating articulation side of the throttle valve shaft 32 to a throttle valve lever 21, which is connected to the throttle valve shaft 32 in a rotationally fixed manner.
  • a first grinder driver 22 On the surface of the throttle valve lever 21 facing the throttle valve 9 there is a first grinder driver 22 which is in contact with a first potentiometer 23.
  • the potentiometer 23 and the grinder driver 22 are shown schematically in FIG. 1 by the actual value detection device 19, which forwards the actual value position of the throttle valve shaft 32 to the control device 17 as a signal.
  • a freewheel bell 45 designed as a driving element 25, which is freely rotatably mounted on the throttle valve shaft 32 by means of a slide bearing 54 and has a web 56 at its upper end which overlaps the upper end of the throttle valve lever 21.
  • a second wiper 37 is arranged on the web 56 and is in contact with a second potentiometer 24.
  • the second potentiometer 24 and the grinder 37 are shown schematically in FIG. 1 by the actual value detection device 20, which forwards a corresponding signal for the idle control range to the control device 17.
  • the driver or the freewheel bell 45 is equipped with a cylindrical extension for receiving a drive wheel 59, which can be drive-connected to the electric motor 14 via a transmission 4 shown schematically in FIG.
  • the driver element 25 has a stop 46 against which the throttle valve lever 21 is pulled by means of the return spring 42, so that the electric motor 14 can adjust the throttle valve 9 for the idle control range via the driver element 25 and the throttle valve lever 21. If the vehicle pedal 1 is actuated, the electric motor 14 is deactivated, so that the driver element 25 of the throttle valve lever 21 can move freely in the freewheeling segment 27. The throttle valve 9 is now adjusted by means of the setpoint lever 39.
  • the two potentiometers 23, 24, the driver element 25, the throttle valve lever 32 and the grinder drivers 22, 37 are located in a closed housing 36, so that these parts are protected from dirt and damage. It is also advantageous if the two potentiometers 23, 24 are arranged in one plane on two different circular paths, and that the driver element 25 and the throttle valve lever 21 are arranged close to one another, so that all parts of the actuator 10 can be accommodated in the smallest space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

A load control device is equipped with a throttle valve 9 determining the output of an internal combustion engine, which valve is rotationally fixed to a throttle valve shaft (32) supported in the throttle valve housing (30), the throttle valve shaft (32) having a mechanical articulation side on the accelerator pedal side and a servo motor articulation side to which a coupling element is assigned for the mechanical disconnection of the throttle valve from an electric motor (14), and a device for relaying the respective position of the throttle valve lever (21) arranged on the throttle valve shaft (32) and of a driver element (25) to an electronic control device (17). The relay device has a first transmission element arranged rotationally fixed on the throttle valve shaft (32) and acting in concert with a first potentiometer (23) and a second transmission element supported so that it is free to rotate on the throttle valve shaft (32) and acting in concert with a second potentiometer (24). All parts of the relay device are accommodated in a dust-protected housing 36, resulting in a very compact arrangement. …<IMAGE>…

Description

Lastverstelleinrichtung mit einer die Leistung einer Brennkraftmaschine bestimmenden Drosselklappe, die mit einer im Drosselklappengehäuse gelagerten Drosselklappenwelle drehfest verbunden ist, wobei die Drosselklappenwelle eine fahrpedalseitige, mechanische Anlenkseite und eine stellmotorige Anlenkseite aufweist, der ein Kupplungselement zum mechanischen Entkoppeln der Drosselklappe von einem Stellmotor zugeordnet ist, sowie einer Einrichtung zum Rückmelden der jeweiligen Position der Drosselklappenwelle an eine elektronische Regeleinrichtung.Load adjusting device with a throttle valve determining the performance of an internal combustion engine, which is connected in a rotationally fixed manner to a throttle valve shaft mounted in the throttle valve housing, the throttle valve shaft having an accelerator pedal-side mechanical linkage side and an actuating linkage side, which is assigned a coupling element for mechanically decoupling the throttle valve and an actuator motor a device for reporting the respective position of the throttle valve shaft to an electronic control device.

Bei dieser bekannten Lastverstelleinrichtung erfolgt üblicherweise die Ansteuerung der Drosselklappe fahrpedalseitig über einen mit der Anlenkseite der Drosselklappenwelle verbundenen Mitnehmer, der hierzu mittels eines Bowdenzugs mit dem Fahrzeugpedal verbunden ist. Bei bestimmten Fahrzuständen, beispielsweise bei einer Geschwindigkeitsregelung oder bei einer Leerlaufregelung erfolgt die Ansteuerung der Drosselklappenwelle durch einen der Lastverstelleinrichtung zugeordneten elektrischen Stellmotor. Hierzu geht eine manuelle Regelung durch den Fahrer voraus. Deshalb ist es notwendig die Drosselklappe für definierte Winkelbereiche von dem elektrischen Stellmotor mechanisch zu entkoppeln. Aufgrund dieser Entkopplung ist es für die Regelgüte der Lastverstelleinrichtung erforderlich, die örtliche Position des elektrischen Stellmotors rückzumelden. Die Erfassung der Position erfolgt durch die Einrichtung zum Rückmelden, die einer Regeleinrichtung zugeordnet ist. Um jedoch eine Standardisierung zu bereiten, ist es erwünscht, daß das eigentliche, die Position des Stellmotors elektrisch erfassende Teil der Einrichtung zum Rückmelden auf der fahrpedalseitigen, mechanischen Anlenkseite der Lastverstelleinrichtung zugeordnet ist.In this known load adjustment device, the throttle valve is usually actuated on the accelerator pedal side via a driver connected to the articulation side of the throttle valve shaft, which is connected to the vehicle pedal for this purpose by means of a Bowden cable. In certain driving conditions, for example in a speed control or in an idle control, the throttle valve shaft is controlled by an electric servomotor assigned to the load adjustment device. This is preceded by manual control by the driver. It is therefore necessary to mechanically decouple the throttle valve from the electric servomotor for defined angular ranges. Because of this decoupling, it is necessary for the control quality of the load adjustment device to report the local position of the electric servomotor. The position is recorded by the feedback device, which is assigned to a control device is. However, in order to prepare a standardization, it is desirable that the actual part of the device for the feedback on the accelerator pedal side, mechanical articulation side of the load adjusting device is assigned to the position of the servomotor.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, eine Lastverstelleinrichtung derart auszubilden, daß alle für die Rückmeldeeinrichtung wesentlichen Teile platzsparend und gut geschützt untergebracht werden können. Gelöst wird die Aufgabe erfindungsgemäß dadurch, daß die Einrichtung zum Rückmelden ein erstes, auf der Drosselklappenwelle drehfest angeordnetes mit einem ersten Potentiometer zusammenwirkendes Übertragungsglied und daneben ein zweites, auf der Drosselklappenwelle frei drehbar gelagertes mit einem zweiten Potentiometer zusammenwirkendes Übertragungsglied aufweist. Hierdurch hat man eine sehr kostengünstige und platzsparende Anordnung aller wesentlichen Teile der Einrichtung zum Rückmelden auf der Drosselklappenwelle untergebracht. Dies wird insbesondere dadurch erreicht, daß die beiden Potentiometer und die zugehörigen Übertragungsglieder nebeneinander angeordnet sind. Dies wird in vorteilhafter Weise dadurch erreicht, daß das auf der Drosselklappenwelle drehfest angeordnete Übertragungsglied als Drosselklappenhebel ausgebildet ist, der über einen Schleifermitnehmer mit dem ersten Potentiometer im Kontakt steht, wobei alle Teile in einem Gehäuse untergebracht sind. Die Unterbringung der Potentiometer, Schleifermitnehmer und Übertragungsglieder in einem einzigen Gehäuse gewährleistet einen guten Schutz gegen Beschädigung und Verschmutzung.In contrast, the invention is based on the object of designing a load adjustment device in such a way that all parts essential for the feedback device can be accommodated in a space-saving and well-protected manner. The object is achieved according to the invention in that the device for feedback has a first transmission element, which is arranged on the throttle valve shaft in a rotationally fixed manner and which interacts with a first potentiometer, and in addition a second transmission element which is freely rotatably mounted on the throttle valve shaft and which interacts with a second potentiometer. This has housed a very inexpensive and space-saving arrangement of all essential parts of the device for feedback on the throttle valve shaft. This is achieved in particular in that the two potentiometers and the associated transmission elements are arranged next to one another. This is achieved in an advantageous manner in that the transmission element, which is arranged on the throttle valve shaft in a rotationally fixed manner, is designed as a throttle valve lever which is in contact with the first potentiometer via a wiper driver, all parts being accommodated in a housing. The placement of the potentiometers, slider drivers and transmission elements in a single housing ensures good protection against damage and dirt.

Erfindungsgemäß ist das zweite auf der Drosselklappenwelle frei drehbar gelagerte Übertragungsglied als Mitnehmerelement mit mindestens einem Anschlag ausgebildet, gegen das der Drosselklappenhebel zur Anlage bringbar ist und das über einen zweiten Schleifermitnehmer mit dem zweiten Potentiometer im Kontakt steht, der in der gleichen Ebene angeordnet ist wie der erste Potentiometer. Hierdurch erhält man auf kleinstem Bauraum eine sehr kompakte Anordnung.According to the invention, the second transmission member, which is freely rotatably mounted on the throttle valve shaft, is designed as a driver element with at least one stop, against which the throttle valve lever can be brought into contact and which is in contact with the second potentiometer via a second wiper driver, which is arranged in the same plane as that first potentiometer. This gives a very compact arrangement in the smallest of spaces.

In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, daß das zweite Mitnehmerelement ein Freilaufsegment mit einem Anschlag aufweist, in dem der Drosselklappenhebel verstellbar ist und daß das Mitnehmerelement an der stellmotorigen Anlenkseite über ein Getriebeelement mit einem über eine Regeleinrichtung steuerbaren Elektromotor antriebsverbunden ist. Durch den im Mitnehmerelement vorgesehenen Anschlag wird sichergestellt, daß im Leerlaufregelbereich der Drosselklappenhebel verstellt wird. Über den zweiten Potentiometer wird über die Istwerterfassungseinrichtung die entsprechende Sollwert-Information an die Regeleinrichtung weitergegeben und dadurch der Elektromotor zur Verstellung der Drosselklappe angesteuert, bis die Drosselklappe auf den gewünschten Sollwert eingestellt ist,der dann mit dem vom ersten Potentiometer ermittelten Istwert verglichen wird. Wird der Fahrpedalhebel und dadurch der Drosselklappenhebel verstellt, so verharrt das Mitnehmerelement in seiner Lage, da der Drosselklappenhebel sich aufgrund der vorteilhaften Anordnung frei bewegen kann.In a further embodiment of the invention, it is advantageous that the second driver element has a free-wheeling segment with a stop in which the throttle valve lever is adjustable and that the driver element on the actuating articulation articulation side is drive-connected via a gear element to an electric motor that can be controlled by a control device. The stop provided in the driver element ensures that the throttle valve lever is adjusted in the idle control range. The corresponding setpoint information is passed on to the control device via the second potentiometer via the actual value detection device, and the electric motor for adjusting the throttle valve is thereby controlled until the throttle valve is set to the desired setpoint, which is then compared with the actual value determined by the first potentiometer. If the accelerator pedal lever and thereby the throttle valve lever are adjusted, the driver element remains in its position since the throttle valve lever can move freely due to the advantageous arrangement.

Eine vorteilhafte Ausführungsform der Erfindung besteht darin, daß das Mitnehmerelement an der stellmotorigen Anlenkseite über ein Getriebeelement mit einem über eine Regeleinrichtung steuerbaren Elektromotor antriebsverbunden ist. Hierdurch erhält man auf einfache Weise eine Antriebsverbindung zwischen der Drosselklappenwelle und dem Elektromotor.An advantageous embodiment of the invention is that the driver element on the actuator Articulation side is drive-connected via a gear element to an electric motor which can be controlled via a control device. This provides a drive connection between the throttle valve shaft and the electric motor in a simple manner.

In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, daß das Fahrzeugpedal mittel- oder unmittelbar über einen auf der Drosselklappenwelle in einem definierten Bereich frei verschwenkbaren Sollwerthebel mit dem Drosselklappenhebel antriebsmäßig verbunden ist und daß auf der Drosselklappenwelle ein Freilaufhaken drehfest angeordnet ist, der in ein im Sollwerthebel vorgesehenes Freilaufsegment eingreift, über eine Rückzugfeder gegen einen das Freilaufsegment begrenzenden Anschlag zur Anlage gebracht wird und über die Drosselklappenwelle mit dem Drosselklappenhebel antriebsmäßig verbunden ist. Die Rückzugfeder wirkt mittels des Hebelarms auf die Drosselklappenwelle ein und zieht diese aus Sicherheitsgründen in Schließrichtung. Durch die Unterbringung des Istwertpotentiometers-Drosselklappe und des Istwertpotentiometers-Leerlaufregelbereich in einer Ebene sowie durch die platzsparende Anordnung des Drosselklappenhebels und des Mitnehmers in einem staubgeschützten Gehäuse erhält man insgesamt ein sehr kompaktes Stellglied. Ferner kann der Sollwerthebel als Drosselklappenantriebshebel und für den Leerlaufregelbetrieb eingesetzt werden.In a further embodiment of the invention, it is advantageous that the vehicle pedal is connected to the throttle valve lever directly or indirectly via a setpoint lever that can be freely pivoted on the throttle valve shaft in a defined area, and that a freewheel hook is arranged on the throttle valve shaft in a rotationally fixed manner, which is in a setpoint lever provided freewheel segment engages, is brought into contact with a stop spring against a stop delimiting the freewheel segment and is connected in terms of drive to the throttle valve lever via the throttle valve shaft. The return spring acts on the throttle valve shaft by means of the lever arm and pulls it in the closing direction for safety reasons. By accommodating the actual value potentiometer throttle valve and the actual value potentiometer idle control range on one level and by the space-saving arrangement of the throttle valve lever and the driver in a dust-proof housing, a very compact actuator is obtained overall. Furthermore, the setpoint lever can be used as a throttle valve drive lever and for idle control operation.

Eine sehr platzsparende Anordnung erhält man auch dadurch, daß die beiden Potentiometer in einer Ebene angeordnet sind.A very space-saving arrangement is also obtained by arranging the two potentiometers in one plane.

Weitere Vorteile ergeben sich aus der nachfolgenden Beschreibung und den Zeichnungen, in denen ein bevorzugtes Ausführungsbeispiel dargestellt ist. Es zeigen:

Figur 1
ein Blockschaltbild zur Verdeutlichung der prinzipiellen Funktion der erfindungsgemäßen Lastverstelleinrichtung,
Figur 2
einen Längsquerschnitt des Stellglieds mit der zugehörigen Drosselklappenwelle,
Figur 3
einen auf der Drosselklappenwelle angeordneten Drosselklappenhebel und einen ebenfalls auf der Drosselklappenwelle angeordneten Mitnehmer,
Figur 4
das Mitnehmerelement mit einem Freilaufsegment.
Further advantages result from the following description and the drawings, in which a preferred exemplary embodiment is shown. Show it:
Figure 1
2 shows a block diagram to illustrate the basic function of the load adjustment device according to the invention,
Figure 2
a longitudinal cross section of the actuator with the associated throttle valve shaft,
Figure 3
a throttle valve lever arranged on the throttle valve shaft and a driver likewise arranged on the throttle valve shaft,
Figure 4
the driver element with a freewheel segment.

Die in dem Rahmen 18 dargestellten Teile gemäß Figur 1 bilden ein Stellglied bzw. eine Lastverstelleinrichtung 10, wobei die Teile in einer Baueinheit zusammengefaßt sind. Zu der Lastverstelleinrichtung 10 gehört ein Stellmotor bzw. Elektromotor 14, der über ein nur schematisch angedeutetes Getriebe 4 mit einer Drosselklappe 9 antriebsmäßig verbunden ist. Über das Getriebe 4 werden die Stellkräfte des Elektromotors 14 zur Drosselklappe 9 übertragen und dadurch wird eine Verstellung in die gewünschte Position herbeigeführt.The parts shown in the frame 18 according to FIG. 1 form an actuator or a load adjustment device 10, the parts being combined in one structural unit. The load adjusting device 10 includes a servomotor or electric motor 14, which is connected to a throttle valve 9 via a gear mechanism 4, which is only indicated schematically. The actuating forces of the electric motor 14 are transmitted to the throttle valve 9 via the transmission 4, and an adjustment to the desired position is thereby brought about.

Wie aus Figur 1 hervorgeht, kann die Lastverstelleinrichtung 10 über ein Fahrpedal 1 verstellt werden, wobei durch Betätigung des Fahrpedals 1 ein Hebel 3 verstellt und über eine Rückzugfeder 2 in Leerlaufrichtung LL vorgespannt wird. Das Fahrpedal 1 ist mittels eines Gaszugs 5 an einen Mitnehmer 6 angeschlossen, so daß bei Betätigung des Fahrpedals 1 der Mitnehmer 6 in Richtung des Vollastanschlags VL verschoben wird. An den Mitnehmer 6 sind Rückstellfedern 7 angeschlossen, die diesen in Leerlaufrichtung LL vorspannen. Solange der Gaszug 5 nicht beaufschlagt wird, liegt der Mitnehmer 6 an dem ihm zugeordneten Leerlaufanschlag LL an. Durch die ortsfeste Anordnung der Feder 12 wird eine direkte Rückstellung der Drosselklappe 9 erreicht. Die Funktion der Feder ist nachstehend näher beschrieben und in Figur 2 veranschaulicht.As can be seen from FIG. 1, the load adjustment device 10 can be adjusted via an accelerator pedal 1, wherein a lever 3 is adjusted by actuating the accelerator pedal 1 and is prestressed in the idling direction LL via a return spring 2. The accelerator pedal 1 is connected to a driver 6 by means of a throttle cable 5, so that when the accelerator pedal 1 is actuated, the driver 6 is displaced in the direction of the full load stop VL. Return springs 7 are connected to the driver 6 and bias them in the idling direction LL. As long as the throttle cable 5 is not acted upon, the driver 6 rests against the idling stop LL assigned to it. Due to the fixed arrangement of the spring 12, a direct return of the throttle valve 9 is achieved. The function of the spring is described in more detail below and illustrated in Figure 2.

Die Lastverstelleinrichtung weist neben dem ersten Steuerelementteil 8 ein zweites Steuerelementteil 16 auf, das mit einem Elektromotor 14 verbindbar ist. Das Steuerelementteil 16 ist in Figur 1 ebenfalls nur schematisch angedeutet und kann einem in der Zeichnung nicht dargestellten Getriebe entsprechen. Die beiden Steuerelementteile 8 und 16 sind nicht fest miteinander verbunden, sondern nur in eine Bewegungsrichtung und zwar in Aufregelrichtung kuppelbar.In addition to the first control element part 8, the load adjustment device has a second control element part 16 which can be connected to an electric motor 14. The control element part 16 is also only indicated schematically in FIG. 1 and can correspond to a gear not shown in the drawing. The two control element parts 8 and 16 are not firmly connected to one another, but can only be coupled in one direction of movement, namely in the upward direction.

In Figur 1 ist die elektronische Regeleinrichtung 17, die Aufbereitungs-, Logik- und Regelschaltungen enthält, schematisch angedeutet. In ihrem Digitalteil speichert die Regeleinrichtung 17 Werte für die Fahrfahrzeuganpassung und verarbeitet die digitalen oder digitalisierten Werte verschiedener Eingangsgrößen, die dann die gewünschte Stellung der Drosselklappe 9 über ein Analogteil regeln. Mit der elektronischen Regeleinrichtung 17 wirkt eine zu dem steuerelementteil 8 gehörende Istwerterfassungseinrichtung 19 sowie eine dem zweiten steuerelementteil 16 zugeordnete, die jeweilige Position dieses Steuerelementteils 16 ermittelnde Istwerterfassungseinrichtung 20 zusammen.In Figure 1, the electronic control device 17, which contains processing, logic and control circuits, is indicated schematically. In its digital part, the control device 17 stores values for adapting the vehicle and processes the digital or digitized values of various input variables, which then regulate the desired position of the throttle valve 9 via an analog part. With the electronic control device 17 cooperates with an actual value detection device 19 belonging to the control element part 8 and an actual value detection device 20 assigned to the second control element part 16 and determining the respective position of this control element part 16.

Die erste Istwerterfassungseinrichtung 19 gemäß Figur 1 entspricht einem ersten Potentiometer 23 und die zweite Istwerterfassungseinrichtung 20 entspricht dem in den Figuren 2 und 3 dargestellten Potentiometer 24.The first actual value detection device 19 according to FIG. 1 corresponds to a first potentiometer 23 and the second actual value detection device 20 corresponds to the potentiometer 24 shown in FIGS. 2 and 3.

Die Regeleinrichtung 17 hat die Aufgabe, alle eingegebenen Signale, z.B. die Motordrehzahl, mittels der Potentiometer 23, 24 (Figur 2) zu erfassen und miteinander zu vergleichen. Weicht beispielsweise die Istdrehzahl von der Sollwertdrehzahl ab, so wird das Stellglied so lange angesteuert, bis sich die vorgegebene Drehzahl eingestellt hat.The control device 17 has the task of all input signals, e.g. the engine speed by means of the potentiometers 23, 24 (FIG. 2) and to compare them. If, for example, the actual speed deviates from the setpoint speed, the actuator is activated until the specified speed has been reached.

Von der elektronischen Regeleinrichtung 17 werden darüberhinaus über einen Leerlaufkontakt 29, der von dem Mitnehmer 6 aktiviert wird, Signale erfaßt, wenn dieser an dem ihm zugeordneten Leerlaufanschlag LL zur Anlage kommt.The electronic control device 17 also detects signals via an idle contact 29, which is activated by the driver 6, when the latter comes to rest against the idle stop LL assigned to it.

Die elektronische Regeleinrichtung 17 dient im Zusammenwirken mit der Istwerterfassungseinrichtung 19 bzw. 20 und den externen Bezugsgrößen dem Zweck, eine Sicherheitslogik betreffend der Steuerung des ersten und zweiten Steuerelementteils 8,16 aufzubauen. Sobald die elektronische Regeleinrichtung 17 oder der Elektromotor 14 nicht mehr einwandfrei funktionieren, wird die Drosselklappe 9 durch die in Richtung der maximalen Leerlaufstellung vorgespannte Feder 43 in die Leerlaufnot Stellung LLnot bewegt.In cooperation with the actual value detection device 19 or 20 and the external reference values, the electronic control device 17 serves the purpose of building up a safety logic relating to the control of the first and second control element parts 8, 16. As soon as the electronic control device 17 or the electric motor 14 no longer function properly, the throttle valve 9 is moved in the direction of the maximum Idle position preloaded spring 43 in the idle emergency position LL not moved.

In den Figuren 2 und 3 ist das in Figur 1 nur schematisch in dem Rahmen 18 dargestellte Stellglied 10 im Detail dargestellt. Es besteht aus einem Drosselklappengehäuse 30, in dem eine Drosselklappenwelle 32 mit einer Drosselklappe 9 angeordnet ist. Auf der fahrpedalseitigen, mechanischen Anlenkseite ist auf dem Ende der Drosselklappenwelle 32 ein Sollwerthebel 39 mittels eines Wälzlagers 51 in einem definierten Bereich frei drehbar gelagert. Der Sollwerthebel 39 weist ein Freilaufsegment 41 (Figur 4) auf, der zur Aufnahme eines Freilaufhakens 40 dient, der an einem Hebelarm 44 fest angeordnet ist. Die von dem Fahrpedal 1 ausgehenden Stellkräfte werden über den Sollwerthebel 39 und den Freilaufhaken 40 auf die Drosselklappenwelle 32 übertragen. Wird die Drosselklappenwelle 32 im Leerlaufregelbereich über den Elektromotor 14 verstellt, so kann der Freilaufhaken 40 sich im Freilaufsegment 41 frei bewegen. Der Sollwerthebel 39 steht ferner über den Freilaufhaken 40 auf der stellmotorigen Anlenkseite der Drosselklappenwelle 32 mit einem Drosselklappenhebel 21 in Antriebsverbindung, der drehfest mit der Drosselklappenwelle 32 verbunden ist. Auf der zur Drosselklappe 9 gerichteten Oberfläche des Drosselklappenhebels 21 befindet sich ein erster Schleifermitnehmer 22, der mit einem ersten Potentiometer 23 in Kontakt steht.Die Drosselkalappe 9 kann sich frei bewegen, wenn der Sollwerthebel 39 gegen den Anschlag bzw. Leerlaufanschlag 46 anliegt. Der Potentiometer 23 und der Schleifermitnehmer 22 sind in Figur 1 durch die Istwerterfassungseinrichtung 19 schematisch wiedergegeben, die die Istwertposition der Drosselklappenwelle 32 als Signal an die Regeleinrichtung 17 weiterleitet.In Figures 2 and 3, the actuator 10 shown only schematically in the frame 18 in Figure 1 is shown in detail. It consists of a throttle valve housing 30, in which a throttle valve shaft 32 with a throttle valve 9 is arranged. On the accelerator pedal-side, mechanical linkage side, a setpoint lever 39 is freely rotatably supported in a defined area by means of a roller bearing 51 on the end of the throttle valve shaft 32. The setpoint lever 39 has a freewheel segment 41 (FIG. 4) which serves to receive a freewheel hook 40 which is fixedly arranged on a lever arm 44. The actuating forces emanating from the accelerator pedal 1 are transmitted to the throttle valve shaft 32 via the setpoint lever 39 and the freewheel hook 40. If the throttle valve shaft 32 is adjusted by the electric motor 14 in the idle control range, the freewheel hook 40 can move freely in the freewheel segment 41. The setpoint lever 39 is also connected via the freewheel hook 40 on the actuating articulation side of the throttle valve shaft 32 to a throttle valve lever 21, which is connected to the throttle valve shaft 32 in a rotationally fixed manner. On the surface of the throttle valve lever 21 facing the throttle valve 9 there is a first grinder driver 22 which is in contact with a first potentiometer 23. The potentiometer 23 and the grinder driver 22 are shown schematically in FIG. 1 by the actual value detection device 19, which forwards the actual value position of the throttle valve shaft 32 to the control device 17 as a signal.

Dicht neben dem Drosselklappenhebel 21 befindet sich eine als Mitnehmerelement 25 ausgebildete Freilaufglocke 45, die mittels eines Gleitlagers 54 auf der Drosselklappenwelle 32 frei drehbar gelagert ist und an ihrem oberen Ende einen Steg 56 aufweist, der auf das obere Ende des Drosselklappenhebels 21 übergreift. An dem Steg 56 ist ein zweiter Schleifer 37 angeordnet, der mit einem zweiten Potentiometer 24 Kontakt hat. Der zweite Potentiometer 24 und der Schleifer 37 sind in Figur 1 durch die Istwerterfassungseinrichtung 20 schematisch wiedergegeben, die ein entsprechendes Signal für den Leerlaufregelbereich an die Regeleinrichtung 17 weiterleitet. Der Mitnehmer bzw. die Freilaufglocke 45 ist mit einem zylindrischen Ansatz zur Aufnahme eines Antriebsrades 59 ausgestattet, das über ein in Figur 1 schematisch dargestelltes Getriebe 4 mit dem Elektromotor 14 antriebsverbindbar ist.Close to the throttle valve lever 21 is a freewheel bell 45 designed as a driving element 25, which is freely rotatably mounted on the throttle valve shaft 32 by means of a slide bearing 54 and has a web 56 at its upper end which overlaps the upper end of the throttle valve lever 21. A second wiper 37 is arranged on the web 56 and is in contact with a second potentiometer 24. The second potentiometer 24 and the grinder 37 are shown schematically in FIG. 1 by the actual value detection device 20, which forwards a corresponding signal for the idle control range to the control device 17. The driver or the freewheel bell 45 is equipped with a cylindrical extension for receiving a drive wheel 59, which can be drive-connected to the electric motor 14 via a transmission 4 shown schematically in FIG.

Ferner weist das Mitnehmerelement 25 einen Anschlag 46 auf, gegen den der Drosselklappenhebel 21 mittels der Rückzugfeder 42 gezogen wird, so daß der Elektromotor 14 über das Mitnehmerelement 25 und den Drosselklappenhebel 21 die Drosselklappe 9 für den Leerlaufregelbereich verstellen kann. Wird das Fahrzeugpedal 1 betätigt , dann wird der Elektromotor 14 deaktiviert, so daß sich in dem Freilaufsegment 27 das Mitnehmerelement 25 des Drosselklappenhebels 21 freibewegen kann. Die Drosselklappe 9 wird nun mittels des Sollwerthebels 39 verstellt.Furthermore, the driver element 25 has a stop 46 against which the throttle valve lever 21 is pulled by means of the return spring 42, so that the electric motor 14 can adjust the throttle valve 9 for the idle control range via the driver element 25 and the throttle valve lever 21. If the vehicle pedal 1 is actuated, the electric motor 14 is deactivated, so that the driver element 25 of the throttle valve lever 21 can move freely in the freewheeling segment 27. The throttle valve 9 is now adjusted by means of the setpoint lever 39.

Die beiden Potentiometer 23,24, das Mitnehmerelement 25, der Drosselklappenhebel 32 sowie die Schleifermitnehmer 22,37 befinden sich in einem geschlossenen Gehäuse 36, so daß diese Teile vor Schmutz und Beschädigungen geschützt sind. Vorteilhaft ist es auch, wenn die beiden Potentiometer 23,24 in einer Ebene auf zwei unterschiedlichen Kreisbahnen angeordnet sind, und daß das Mitnehmerelement 25 und der Drosselklappenhebel 21 dicht nebeneinander angeordnet sind, so daß auf kleinstem Raum sämtliche Teile des Stellgliedes 10 untergebracht werden können.The two potentiometers 23, 24, the driver element 25, the throttle valve lever 32 and the grinder drivers 22, 37 are located in a closed housing 36, so that these parts are protected from dirt and damage. It is also advantageous if the two potentiometers 23, 24 are arranged in one plane on two different circular paths, and that the driver element 25 and the throttle valve lever 21 are arranged close to one another, so that all parts of the actuator 10 can be accommodated in the smallest space.

BezugszeichenlisteReference symbol list

11
FahrzeugpedalVehicle pedal
22nd
RückzugfederReturn spring
33rd
Hebellever
44th
Getriebetransmission
55
GaszugThrottle cable
66
MitnehmerCarrier
77
RückstellfederReturn spring
88th
SteuerelementteilControl part
99
Drosselklappethrottle
1010th
StellgliedActuator
1414
ElektromotorElectric motor
1616
SteuerelementteilControl part
1717th
RegeleinrichtungControl device
1818th
Rahmenframe
1919th
IstwerterfassungseinrichtungActual value acquisition device
2020th
IstwerterfassungseinrichtungActual value acquisition device
2121
DrosselklappenhebelThrottle lever
2222
SchleifermitnehmerGrinder driver
2323
PotentiometerPotentiometer
2424th
PotentiometerPotentiometer
2525th
MitnehmerelementDriver element
2626
Anschlagattack
2727th
FreilaufsegmentFreewheel segment
2929
LeerlaufkontaktIdle contact
3030th
DrosselklappengehäuseThrottle body
3232
DrosselklappenwelleThrottle valve shaft
3636
Gehäusecasing
3737
SchleifermitnehmerGrinder driver
3939
SollwerthebelSetpoint lever
4040
FreilaufhakenFreewheel hook
4141
FreilaufsegmentFreewheel segment
4242
RückzugfederReturn spring
4343
Federfeather
4444
HebelarmLever arm
4545
FreilaufglockeFreewheel bell
4646
Anschlagattack
5151
Wälzlagerroller bearing
5454
Gleitlagerbearings
5656
Stegweb
5959
Antriebsraddrive wheel

Claims (8)

Lastverstelleinrichtung mit einer die Leistung einer Brennkraftmaschine bestimmenden Drossel klappe, die mit einer im Drosselklappengehäuse gelagerten Drosselklappenwelle drehfest verbunden ist, wobei die Drosselklappenwelle eine fahrpedalseitige, mechanische Anlenkseite und eine stellmotorige Anlenkseite aufweist, der ein Kupplungselement zum mechanischen Entkoppeln der Drosselklappe von einem Stellmotor zugeordnet ist, sowie einer Einrichtung zum Rückmelden der jeweiligen Position der Drosselklappenwelle an eine elektronische Regeleinrichtung, dadurch gekennzeichnet, daß die Einrichtung zum Rückmelden ein erstes, auf der Drosselklappenwelle (32) drehfest angeordnetes, mit einem ersten Potentiometer (23) zusammenwirkendes Übertragungsglied und daneben ein zweites, auf der Drosselklappenwelle (32) frei drehbar gelagertes mit einem zweiten Potentiometer (24) zusammenwirkendes Übertragungsglied aufweist.Load adjusting device with a throttle which determines the performance of an internal combustion engine and which is connected in a rotationally fixed manner to a throttle valve shaft mounted in the throttle valve housing, the throttle valve shaft having an accelerator pedal-side mechanical linkage side and an actuating linkage side which is assigned a coupling element for mechanically decoupling the throttle valve from an actuator motor. and a device for reporting back the respective position of the throttle valve shaft to an electronic control device, characterized in that the device for reporting back a first transmission element, which is arranged in a rotationally fixed manner on the throttle valve shaft (32) and cooperates with a first potentiometer (23), and next to it a second one the throttle valve shaft (32) has a freely rotatably mounted transmission element which interacts with a second potentiometer (24). Lastverstelleinrichtung nach Anspruch 1 dadurch gekennzeichnet, daß das auf der Drosselklappenwelle (32) drehfest angeordnete Übertragungsglied als Drosselklappenhebel (21) ausgebildet ist, der über einen Schleifer (22) mit dem ersten Potentiometer (23) im Kontakt steht, wobei alle Teile in einem Gehäuse untergebracht sind.Load adjusting device according to claim 1, characterized in that the transmission member arranged on the throttle valve shaft (32) in a rotationally fixed manner is designed as a throttle valve lever (21) which is in contact with the first potentiometer (23) via a slider (22), all parts in one housing are accommodated. Lastverstelleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das zweite auf der Drosselklappenwelle (32) frei drehbar gelagerte Übertragungsglied als Mitnehmerelement (25) mit mindestens einem Anschlag (46) ausgebildet ist, das gegen den Drosselklappenhebel (21) zur Anlage bringbar ist und das über einen zweiten Schleifer (37) mit dem zweiten Potentiometer (24) in Kontakt steht.Load adjusting device according to claim 1, characterized in that the second transmission member, which is freely rotatably mounted on the throttle valve shaft (32), is designed as a driver element (25) with at least one stop (46) which can be brought into abutment against the throttle valve lever (21) and which a second wiper (37) is in contact with the second potentiometer (24). Lastverstelleinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das zweite Mitnehmerelement (25) ein Freilaufsegment (27) mit mindestens einem Anschlag (46) aufweist, gegen das der Drosselklappenhebel (21) zu Anlage bringbar ist.Load adjusting device according to claim 3, characterized in that the second driver element (25) has a freewheel segment (27) with at least one stop (46) against which the throttle valve lever (21) can be brought into contact. Lastverstelleinrichtung nach einem oder mehreren der vorhergehenden Ansprüche ,dadurch gekennzeichnet, daß das Mitnehmerelement (25) an der stellmotorigen Anlenkseite über ein Getriebeelement mit einem über eine Regeleinrichtung (17) steuerbaren Elektromotor (14) antriebsverbunden ist.Load adjusting device according to one or more of the preceding claims, characterized in that the driver element (25) on the actuating motor articulation side is drive-connected via a gear element to an electric motor (14) which can be controlled by a control device (17). Lastverstelleinrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekenn zeichnet, daß das Fahrzeugpedal (1) mittel- oder unmittelbar über einen auf der Drosselklappenwelle (32) in einem definierten Bereich frei verschwenkbaren Sollwerthebel (39) mit dem Drosselklappenhebel (21) antriebsseitig verbunden ist.Load adjusting device according to one or more of the preceding claims, characterized in that the vehicle pedal (1) is connected directly or indirectly to the throttle valve lever (21) via a setpoint lever (39) which can be freely pivoted in a defined area on the throttle valve shaft (32) . Lastverstelleinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß auf der Drosselklappenwelle (32) ein Freilaufhaken (40) drehfest angeordnet ist, der in ein im Sollwerthebel (39) vorgesehenes Freilaufsegment (41) eingreift, über eine Rückzugfeder (42) gegen einen das Freilaufsegment (41) begrenzenden Anschlag (26) zur Anlage gebracht wird und über die Drosselklappenwelle (32) mit dem Drosselklappenhebel (21) antriebsmäßig verbunden ist, wobei die Rückzugfeder (42) mittels des Hebelarms (44) auf die Drosselklappe (32) einwirkt und diese in Schließrichtung zieht.Load adjusting device according to Claim 7, characterized in that a free-wheel hook (40) is arranged on the throttle valve shaft (32) in a rotationally fixed manner and engages in a free-wheel segment (41) provided in the setpoint lever (39), via a return spring (42) against one of the free-wheel segment ( 41) limiting stop (26) is brought into contact and is connected in terms of drive via the throttle valve shaft (32) to the throttle valve lever (21), the return spring (42) acting on the throttle valve (32) by means of the lever arm (44) and into it Closing direction pulls. Lastverstelleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Potentiometer (23,24) in einer Ebene angeordnet sind.Load adjusting device according to claim 1, characterized in that the two potentiometers (23, 24) are arranged in one plane.
EP90124383A 1990-05-07 1990-12-17 Load control apparatus Expired - Lifetime EP0455880B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014508A DE4014508A1 (en) 1990-05-07 1990-05-07 LOAD ADJUSTMENT DEVICE
DE4014508 1990-05-07

Publications (4)

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EP0455880A2 true EP0455880A2 (en) 1991-11-13
EP0455880A3 EP0455880A3 (en) 1991-12-27
EP0455880B1 EP0455880B1 (en) 1993-09-22
EP0455880B2 EP0455880B2 (en) 1999-11-17

Family

ID=6405811

Family Applications (1)

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US (1) US5168850A (en)
EP (1) EP0455880B2 (en)
DE (2) DE4014508A1 (en)

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JPH0650201A (en) * 1992-04-30 1994-02-22 Nippondenso Co Ltd Driving device for throttle valve
US6691678B1 (en) * 2000-04-05 2004-02-17 Hitachi, Ltd. Throttle assembly for internal combustion engine, and throttle sensor
CN106150705B (en) * 2016-08-22 2020-11-17 上海交通大学 Manual-automatic integrated accelerator control device and use method

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JPS61279753A (en) * 1985-06-04 1986-12-10 Nissan Motor Co Ltd Engine rotational speed control device
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Also Published As

Publication number Publication date
US5168850A (en) 1992-12-08
EP0455880B2 (en) 1999-11-17
EP0455880A3 (en) 1991-12-27
DE4014508A1 (en) 1991-11-14
EP0455880B1 (en) 1993-09-22
DE59002858D1 (en) 1993-10-28

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