EP0455880B2 - Load control apparatus - Google Patents

Load control apparatus Download PDF

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Publication number
EP0455880B2
EP0455880B2 EP90124383A EP90124383A EP0455880B2 EP 0455880 B2 EP0455880 B2 EP 0455880B2 EP 90124383 A EP90124383 A EP 90124383A EP 90124383 A EP90124383 A EP 90124383A EP 0455880 B2 EP0455880 B2 EP 0455880B2
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EP
European Patent Office
Prior art keywords
throttle valve
lever
potentiometer
adjusting device
load adjusting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90124383A
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German (de)
French (fr)
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EP0455880A2 (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 adjustment device with a throttle valve determining the performance of an internal combustion engine according to the features of the preamble of patent claims 1.
  • the throttle valve is usually activated Accelerator pedal side via a driver connected to the articulation side of the throttle valve shaft is connected to the vehicle pedal by means of a Bowden cable.
  • the throttle valve shaft is activated by an electric servomotor assigned to the load adjustment device. This is one manual control by the driver ahead. Therefore, the throttle valve is necessary for defined angular ranges to decouple mechanically from the electric servomotor. Because of this decoupling, it is The local position of the electric servomotor is required for the control quality of the load adjustment device to report back. The position is recorded by the feedback device, that of a control device assigned.
  • EP-A-315 794 describes a load adjustment device with a throttle valve 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 being articulated mechanically and by an actuator on the same side, which is a coupling element for mechanically decoupling the Throttle valve is assigned by an actuator, and with a device for reporting the respective position of the throttle valve shaft to an electronic control device, wherein the device for feedback has a first, rotatably arranged on the throttle valve shaft, cooperating with a first potentiometer transmission element and next to it, also rotatably mounted on the throttle valve shaft, transmission element interacting with a second potentiometer.
  • the object of the invention is to design a load adjustment device in such a way that that all parts essential for the feedback device are housed in a space-saving and well-protected manner can.
  • the object is achieved by the features of patent claim 1. This gives you a very Cost-effective and space-saving arrangement of all essential parts of the device for feedback the throttle valve shaft.
  • This is achieved in particular in that the two potentiometers and the associated transmission elements are arranged side by side.
  • the transmission member arranged on the throttle valve shaft in a rotationally fixed manner acts as a throttle valve lever is formed, which is in contact with the first potentiometer via a grinder driver stands, with all parts housed in one housing. Housing the potentiometer, grinder driver and transmission links in a single housing ensures good protection against damage and pollution.
  • the second transmission element is freely rotatably mounted on the throttle valve shaft formed as a driver element with at least one stop against which the throttle valve lever
  • the system can be brought into contact with the second potentiometer via a second grinder driver stands, which is arranged in the same plane as the first potentiometer. This gives you the smallest Installation space is a very compact arrangement.
  • the second driver element is a freewheel segment has with a stop in which the throttle valve lever is adjustable and that the driver element on the actuating linkage via a gear element with a via a control device controllable electric motor is drive-connected.
  • the stop provided in the driver element it is ensured that the throttle valve lever is adjusted in the idle control range.
  • the corresponding setpoint information is sent to the control device via the actual value detection device passed on and thereby the electric motor controlled to adjust the throttle valve until the throttle valve is set to the desired setpoint, which is then set with that of the first potentiometer determined actual value is compared. If the accelerator pedal lever and thereby the throttle valve lever are adjusted, the driver element remains in its position because the throttle valve lever is advantageous due to the Arrangement can move freely.
  • An advantageous embodiment of the invention is that the driver element on the actuator Linkage side via a gear element with an electric motor that can be controlled by a control device is connected to the drive. This provides a simple way to obtain a drive connection between the Throttle valve shaft and the electric motor.
  • the vehicle pedal is medium or immediate via a setpoint lever that can be freely pivoted in a defined area on the throttle valve shaft the throttle valve lever is drivingly connected and that on the throttle valve shaft a freewheel hook is rotatably arranged, which engages in a freewheel segment provided in the setpoint lever, via a Return spring against a stop limiting the freewheel segment is brought into contact and over the throttle valve shaft is drivingly connected to the throttle valve lever.
  • the return spring works by means of the lever arm onto the throttle valve shaft and pulls it in for safety reasons Closing direction.
  • the setpoint lever can be used as a throttle valve drive lever and for idle control operation be used.
  • a very space-saving arrangement is also obtained by the two potentiometers in one plane are arranged.
  • the parts shown in the frame 18 according to Figure 1 form an actuator or a load adjustment device 10, the parts being combined in one structural unit. Belongs to the load adjustment device 10 an actuating motor or electric motor 14 which has a throttle valve via a gear 4 which is only indicated schematically 9 is drivingly connected. Via the gear 4, the actuating forces of the electric motor 14 are Transfer throttle valve 9 and thereby an adjustment in the desired position is 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 via a return spring 2 in the idling direction LL is biased.
  • 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.
  • the throttle cable 5 is not acted on, the driver 6 is due to the idle stop assigned to it LL on. 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 on, which can be connected to an electric motor 14.
  • the control element part 16 is also only schematic in FIG. 1 indicated and can correspond to a transmission, not shown in the drawing.
  • the two Control element parts 8 and 16 are not firmly connected to one another, but only in one direction of movement and can be coupled in the control direction.
  • the electronic control device 17 which contains processing, logic and control circuits, indicated schematically.
  • the control device 17 stores values for the vehicle adaptation and processes the digital or digitized values of various input variables that then regulate the desired position of the throttle valve 9 via an analog part.
  • an actual value detection device 19 belonging to the control element part 8 and one assigned to the second control element part 16, determining the respective position of this control element part 16 Actual value detection device 20 together.
  • 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 shown in FIGS. 2 and 3 24th
  • the control device 17 has the task of all input signals, e.g. the engine speed by means of Detect potentiometers 23, 24 ( Figure 2) and compare them. For example, the actual speed deviates from the setpoint speed, the actuator is controlled until the specified speed has stopped.
  • the electronic control device 17 uses an open-circuit contact 29, which is operated by the driver 6 is activated, signals are detected when this at the idle stop LL assigned to it comes to the plant.
  • 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 by the spring 43 biased in the direction of the maximum idle position into the idle emergency position LL not .
  • the actuator 10 shown only schematically in frame 18 in FIG Detail shown. It consists of a throttle valve housing 30, in which a throttle valve shaft 32 a throttle valve 9 is arranged.
  • a throttle valve housing 30 On the accelerator pedal side, mechanical linkage is on the end the throttle valve shaft 32 a setpoint lever 39 by means of a roller bearing 51 in a defined area rotatably mounted.
  • the setpoint lever 39 has a freewheel segment 41 (FIG. 4) which is used to hold a Freewheel hook 40 is used, which is fixedly arranged on a lever arm 44.
  • the outgoing from the accelerator pedal 1 Actuating forces are transmitted to the throttle valve shaft 32 via the setpoint lever 39 and the freewheel hook 40.
  • the throttle valve shaft 32 If the throttle valve shaft 32 is adjusted in the idle control range by the electric motor 14, it can the freewheel hook 40 move freely in the freewheel segment 41.
  • the setpoint lever 39 is also above the freewheel hook 40 on the actuating linkage side of the throttle valve shaft 32 with a throttle valve lever 21 in drive connection, which is rotatably connected to the throttle valve shaft 32.
  • On the to the throttle 9 facing surface of the throttle valve lever 21 is a first grinder driver 22, the a first potentiometer 23 is in contact.
  • the throttle cap 9 can move freely when the setpoint lever 39 abuts against the stop or idle stop 46.
  • the potentiometer 23 and the grinder driver 22 are represented schematically in FIG. 1 by the actual value detection device 19 which the Passes the actual position of the throttle valve shaft 32 as a signal to the control device 17.
  • a freewheel bell designed as a driver element 25 is located close to the throttle valve lever 21 45, which is freely rotatably mounted on the throttle valve shaft 32 by means of a plain bearing 54 and on has a web 56 at its upper end which engages over 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 wiper 37 are in FIG. 1 by the actual value detection device 20 schematically reproduced, the corresponding signal for the idle control range to the control device 17 forwards.
  • the driver or the freewheel bell 45 is for receiving with a cylindrical approach equipped with a drive wheel 59, the transmission 4 schematically shown in Figure 1 with the electric motor 14 is drive-connectable.
  • 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 via the driver element 25 and the throttle valve lever 21 can adjust the throttle valve 9 for the idle control range. Will the vehicle pedal 1 operated, then the electric motor 14 is deactivated, so that in the freewheel segment 27 Driver element 25 of the throttle valve lever 21 can move freely.
  • the throttle valve 9 is now by means of of the setpoint lever 39 adjusted.
  • the two potentiometers 23, 24, the driver element 25, the throttle valve lever 32 and the grinder driver 22,37 are in a closed housing 36, so that these parts from dirt and Damages are protected. It is also advantageous if the two potentiometers 23, 24 in one plane are arranged on two different circular paths, and that the driver element 25 and the throttle valve lever 21 are arranged close to each other, so that all parts of the actuator in a small space 10 can be accommodated.

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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)

Description

Lastverstelleinrichtung mit einer die Leistung einer Brennkraftmaschine bestimmenden Drosselklappe gemäß den Merkmalen des Oberbegriffes der Patentansprüches 1.Load adjustment device with a throttle valve determining the performance of an internal combustion engine according to the features of the preamble of patent claims 1.

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 activated Accelerator pedal side via a driver connected to the articulation side of the throttle valve shaft is connected to the vehicle pedal by means of a Bowden cable. In certain driving conditions, for example in the case of speed control or idle control, the throttle valve shaft is activated by an electric servomotor assigned to the load adjustment device. This is one manual control by the driver ahead. Therefore, the throttle valve is necessary for defined angular ranges to decouple mechanically from the electric servomotor. Because of this decoupling, it is The local position of the electric servomotor is required for the control quality of the load adjustment device to report back. The position is recorded by the feedback device, that of a control device assigned. However, in order to prepare standardization, it is desirable that the actual part of the device for the feedback on the accelerator pedal side that electrically detects the position of the servomotor, mechanical linkage of the load adjustment device is assigned.

Die EP-A- 315 794 beschreibt eine Lastverstelleinrichtung mit einer die Leistung einer Brennkraftmaschine bestimmenden Drosselklappe, die mit einer im Drosselklappengehäuse gelagerten Drosselklappenwelle drehfest verbunden ist, wobei die Drosselklappenwelle auf der gleichen Seite mechanisch und stellmotorig angelenkt ist, der ein Kupplungselement zum mechanischen Entkoppeln der Drosselklappe von einem Stellmotor zugeordnet ist, sowie mit einer Einrichtung zum Rückmelden der jeweiligen Position der Drosselklappenwelle an eine elektronische Regeleinrichtung,
wobei die Einrichtung zum Rückmelden ein erstes, auf der Drosselklappenwelle drehfest angeordnetes, mit einem ersten Potentiometer zusammenwirkendes Übertragungsglied und daneben ein zweites, auf der Drosselklappenwelle ebenfalls drehfest gelagertes mit einem zweiten Potentiometer zusammenwirkendes Übertragungsglied aufweist.EP-A-315 794 describes a load adjustment device with a throttle valve 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 being articulated mechanically and by an actuator on the same side, which is a coupling element for mechanically decoupling the Throttle valve is assigned by an actuator, and with a device for reporting the respective position of the throttle valve shaft to an electronic control device,
wherein the device for feedback has a first, rotatably arranged on the throttle valve shaft, cooperating with a first potentiometer transmission element and next to it, also rotatably mounted on the throttle valve shaft, transmission element interacting with a second potentiometer.

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 durch die Merkmale des Patentansprüches 1. 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 object of the invention is to design a load adjustment device in such a way that that all parts essential for the feedback device are housed in a space-saving and well-protected manner can. The object is achieved by the features of patent claim 1. This gives you a very Cost-effective and space-saving arrangement of all essential parts of the device for feedback the throttle valve shaft. This is achieved in particular in that the two potentiometers and the associated transmission elements are arranged side by side. This will be advantageous thereby achieved that the transmission member arranged on the throttle valve shaft in a rotationally fixed manner acts as a throttle valve lever is formed, which is in contact with the first potentiometer via a grinder driver stands, with all parts housed in one housing. Housing the potentiometer, grinder driver and transmission links in a single housing ensures good protection against damage and pollution.

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 element is freely rotatably mounted on the throttle valve shaft formed as a driver element with at least one stop against which the throttle valve lever The system can be brought into contact with the second potentiometer via a second grinder driver stands, which is arranged in the same plane as the first potentiometer. This gives you the smallest Installation space is a very compact arrangement.

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 is a freewheel segment has with a stop in which the throttle valve lever is adjustable and that the driver element on the actuating linkage via a gear element with a via a control device controllable electric motor is drive-connected. Through the stop provided in the driver element it is ensured that the throttle valve lever is adjusted in the idle control range. Via the second potentiometer the corresponding setpoint information is sent to the control device via the actual value detection device passed on and thereby the electric motor controlled to adjust the throttle valve until the throttle valve is set to the desired setpoint, which is then set with that of the first potentiometer determined actual value is compared. If the accelerator pedal lever and thereby the throttle valve lever are adjusted, the driver element remains in its position because the throttle valve lever is advantageous due to the Arrangement can move freely.

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 Linkage side via a gear element with an electric motor that can be controlled by a control device is connected to the drive. This provides a simple way to obtain a drive connection between the Throttle valve shaft and the electric motor.

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 medium or immediate via a setpoint lever that can be freely pivoted in a defined area on the throttle valve shaft the throttle valve lever is drivingly connected and that on the throttle valve shaft a freewheel hook is rotatably arranged, which engages in a freewheel segment provided in the setpoint lever, via a Return spring against a stop limiting the freewheel segment is brought into contact and over the throttle valve shaft is drivingly connected to the throttle valve lever. The return spring works by means of the lever arm onto the throttle valve shaft and pulls it in for safety reasons Closing direction. By accommodating the actual value potentiometer throttle valve and the actual value potentiometer idle control range in one level and due to the space-saving arrangement of the throttle lever and the driver in a dust-proof housing you get a very compact overall Actuator. Furthermore, the setpoint lever can be used as a throttle valve drive lever and for idle control operation be used.

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 the two potentiometers in one plane are arranged.

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 Figure 1 form an actuator or a load adjustment device 10, the parts being combined in one structural unit. Belongs to the load adjustment device 10 an actuating motor or electric motor 14 which has a throttle valve via a gear 4 which is only indicated schematically 9 is drivingly connected. Via the gear 4, the actuating forces of the electric motor 14 are Transfer throttle valve 9 and thereby an adjustment in the desired position is 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 via a return spring 2 in the idling direction LL is biased. 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 on, the driver 6 is due to the idle stop assigned to it LL on. 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 on, which can be connected to an electric motor 14. The control element part 16 is also only schematic in FIG. 1 indicated and can correspond to a transmission, not shown in the drawing. The two Control element parts 8 and 16 are not firmly connected to one another, but only in one direction of movement and can be coupled in the control direction.

In Figur 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 the figure, the electronic control device 17, which contains processing, logic and control circuits, indicated schematically. In its digital part, the control device 17 stores values for the vehicle adaptation and processes the digital or digitized values of various input variables that then regulate the desired position of the throttle valve 9 via an analog part. With the electronic control device 17 acts an actual value detection device 19 belonging to the control element part 8 and one assigned to the second control element part 16, determining the respective position of this control element part 16 Actual value detection device 20 together.

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 shown in FIGS. 2 and 3 24th

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 Detect potentiometers 23, 24 (Figure 2) and compare them. For example, the actual speed deviates from the setpoint speed, the actuator is controlled until the specified speed has stopped.

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.In addition, the electronic control device 17 uses an open-circuit contact 29, which is operated by the driver 6 is activated, signals are detected when this at the idle stop LL assigned to it comes to the plant.

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 by the spring 43 biased in the direction of the maximum idle position into the idle emergency position LL not .

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 FIGS. 2 and 3, the actuator 10 shown only schematically in frame 18 in FIG Detail shown. It consists of a throttle valve housing 30, in which a throttle valve shaft 32 a throttle valve 9 is arranged. On the accelerator pedal side, mechanical linkage is on the end the throttle valve shaft 32 a setpoint lever 39 by means of a roller bearing 51 in a defined area rotatably mounted. The setpoint lever 39 has a freewheel segment 41 (FIG. 4) which is used to hold a Freewheel hook 40 is used, which is fixedly arranged on a lever arm 44. The outgoing from the accelerator pedal 1 Actuating forces 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 in the idle control range by the electric motor 14, it can the freewheel hook 40 move freely in the freewheel segment 41. The setpoint lever 39 is also above the freewheel hook 40 on the actuating linkage side of the throttle valve shaft 32 with a throttle valve lever 21 in drive connection, which is rotatably connected to the throttle valve shaft 32. On the to the throttle 9 facing surface of the throttle valve lever 21 is a first grinder driver 22, the a first potentiometer 23 is in contact. The throttle cap 9 can move freely when the setpoint lever 39 abuts against the stop or idle stop 46. The potentiometer 23 and the grinder driver 22 are represented schematically in FIG. 1 by the actual value detection device 19 which the Passes the actual position of the throttle valve shaft 32 as a signal to the control device 17.

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 zurAufnahme eines Antriebsrades 59 ausgestattet, das überein in Figur 1 schematisch dargestelltes Getriebe 4 mit dem Elektromotor 14 antriebsverbindbar ist.A freewheel bell designed as a driver element 25 is located close to the throttle valve lever 21 45, which is freely rotatably mounted on the throttle valve shaft 32 by means of a plain bearing 54 and on has a web 56 at its upper end which engages over 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 wiper 37 are in FIG. 1 by the actual value detection device 20 schematically reproduced, the corresponding signal for the idle control range to the control device 17 forwards. The driver or the freewheel bell 45 is for receiving with a cylindrical approach equipped with a drive wheel 59, the transmission 4 schematically shown in Figure 1 with the electric motor 14 is drive-connectable.

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 via the driver element 25 and the throttle valve lever 21 can adjust the throttle valve 9 for the idle control range. Will the vehicle pedal 1 operated, then the electric motor 14 is deactivated, so that in the freewheel segment 27 Driver element 25 of the throttle valve lever 21 can move freely. The throttle valve 9 is now by means of of the setpoint lever 39 adjusted.

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 driver 22,37 are in a closed housing 36, so that these parts from dirt and Damages are protected. It is also advantageous if the two potentiometers 23, 24 in one plane are arranged on two different circular paths, and that the driver element 25 and the throttle valve lever 21 are arranged close to each other, so that all parts of the actuator in a small space 10 can be accommodated.

Claims (7)

  1. A load adjusting device with a throttle valve (9) which determines the output of an internal combustion engine and which is attached rotationally fixed to a throttle valve spindle (32) mounted in the throttle valve housing, wherein the throttle valve spindle has a mechanical coupling face on the accelerator pedal side, and a coupling face on a servomotor side with which a coupling element is associated for mechanically uncoupling the throttle valve from a servomotor (14), and with a device for signalling the respective position of the throttle valve spindle (32) to an electronic controller, wherein the device for signalling has a first transmission element which is disposed rotationally fixed on the throttle valve spindle (32) and which cooperates with a first potentiometer (23), and in addition has a second transmission element which is freely rotatably mounted on the throttle valve spindle (32), which cooperates with a second potentiometer (24), and which is associated with the servomotor (14), characterised in that the second transmission element which is freely rotatably mounted on the throttle valve spindle (32) is constructed as a driver element (25) with at least one stop (46), which can be brought into contact with the first transmission element which is constructed as a throttle valve lever (21) and which is in contact with the second potentiometer (24) via a second slider (37), wherein the first potentiometer (23) and the second potentiometer (24), as well as the transmission elements associated with the potentiometers (23, 24), are disposed on the coupling face on the servomotor side.
  2. A load adjusting device according to claim 1, characterised in that the throttle valve lever (21) is in contact with the first potentiometer (23) via a slider (22), wherein all the parts are accommodated in one housing.
  3. A load adjusting device according to claim 1, characterised in that the second driver element (25) has a free-running segment (27) which comprises the stop (46), with which the throttle valve lever (21) can be brought into contact.
  4. A load adjusting device according to one or more of the preceding claims, characterised in that at the coupling face on the servomotor side the driver element (25) is connected, in a driving manner and via a gearing element, to an electric motor (14) which can be controlled via a controller (17).
  5. A load adjusting device according to one or more of the preceding claims, characterised in that the accelerator pedal (1) is directly or indirectly connected at the driving end to the throttle valve lever (21) via a set value lever (39), which is free to pivot in a definite region, disposed on the throttle valve spindle (32).
  6. A load adjusting device according to claim 1, characterised in that a free-running stud (40) is disposed rotationally fixed on the throttle valve spindle (32), which free-running stud engages in a free-running segment (41) provided in the set value lever (39), which is brought via a pull-back spring (42) into contact with a stop (26) which delimits the free-running segment (41), and which is connected to the throttle valve lever (21) via the throttle valve spindle (32) in the manner of a drive, wherein the pull-back spring (42) acts on the throttle valve (32) by means of the lever arm (44) and pulls the throttle valve in the direction of closure.
  7. A load adjusting device according to claim 1, characterised in that the two potentiometers (23, 24) are disposed 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)

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

Family

ID=6405811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124383A Expired - Lifetime EP0455880B2 (en) 1990-05-07 1990-12-17 Load control apparatus

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1063319B (en) * 1976-05-19 1985-02-11 Alfa Romeo Spa POTENTIOMETRIC REGULATOR OF A PHYSICAL SIZE THAT IS A FUNCTION ANY OF TWO OTHER INDEPENDENT PHYSICAL SIZES
DE2843456C2 (en) * 1978-10-05 1984-11-15 Vdo Adolf Schindling Ag, 6000 Frankfurt Position transmitter for influencing the driving speed of a motor vehicle
JPS61279753A (en) * 1985-06-04 1986-12-10 Nissan Motor Co Ltd Engine rotational speed control device
JPS62288343A (en) * 1986-06-06 1987-12-15 Honda Motor Co Ltd Throttle valve control device for internal combustion engine
US4787353A (en) * 1986-09-24 1988-11-29 Honda Giken Kogyo Kabushiki Kaisha Throttle valve control apparatus for an internal combustion engine mounted on a vehicle
DE3815734A1 (en) * 1987-07-23 1989-02-02 Vdo Schindling LOAD ADJUSTMENT DEVICE
DE3814702A1 (en) * 1987-11-12 1989-05-24 Bosch Gmbh Robert DEVICE FOR ACTUATING THE THROTTLE VALVE OF AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR A MOTOR VEHICLE
DE3739613A1 (en) * 1987-11-23 1989-06-01 Vdo Schindling DEVICE FOR THE ELECTRICAL TRANSMISSION OF A MECHANICAL SIZE
JPH0292742A (en) * 1988-09-29 1990-04-03 Aisin Seiki Co Ltd Car speed automatic control device
JPH02204641A (en) * 1989-01-31 1990-08-14 Aisin Seiki Co Ltd Throttle controller
DE3919093A1 (en) * 1989-06-10 1990-12-13 Vdo Schindling LOAD ADJUSTMENT DEVICE

Also Published As

Publication number Publication date
EP0455880A2 (en) 1991-11-13
US5168850A (en) 1992-12-08
EP0455880A3 (en) 1991-12-27
DE4014508A1 (en) 1991-11-14
EP0455880B1 (en) 1993-09-22
DE59002858D1 (en) 1993-10-28

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