EP0651147B1 - Throttle valve body - Google Patents

Throttle valve body Download PDF

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Publication number
EP0651147B1
EP0651147B1 EP94114802A EP94114802A EP0651147B1 EP 0651147 B1 EP0651147 B1 EP 0651147B1 EP 94114802 A EP94114802 A EP 94114802A EP 94114802 A EP94114802 A EP 94114802A EP 0651147 B1 EP0651147 B1 EP 0651147B1
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EP
European Patent Office
Prior art keywords
lever
throttle
throttle valve
spring
stop
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
EP94114802A
Other languages
German (de)
French (fr)
Other versions
EP0651147A1 (en
Inventor
Hans-Jürgen Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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Filing date
Publication date
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Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0651147A1 publication Critical patent/EP0651147A1/en
Application granted granted Critical
Publication of EP0651147B1 publication Critical patent/EP0651147B1/en
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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
    • F02D11/107—Safety-related aspects
    • 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
    • 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
    • F02D2009/0277—Fail-safe mechanisms, e.g. with limp-home feature, to close throttle if actuator fails, or if control cable sticks or breaks

Definitions

  • the invention relates to a throttle valve assembly with accelerator pedal and electric motor drive according to the preamble of claim 1.
  • Such throttle valve neck are known and often have a plurality of return springs which are intended to bring the throttle valve into an emergency running position via the aid lever (DE-A1 41 41 104).
  • the return springs must be carefully coordinated.
  • the sum of the forces of the first and second return springs acting in the closing direction must not be greater than the force of the third return spring acting in the opening direction.
  • the electromotive actuator must be designed so strong for the idle control range that it can adjust the throttle valve in the opening direction against the first and second return spring and in the closing direction against the third return spring.
  • the object of the invention is to develop the device mentioned at the outset in such a way that only a return spring is required and auxiliary levers and the like are omitted, that is to say the mechanics are simplified.
  • Fig. 1 shows a throttle valve assembly 1 with a throttle valve shaft 2, on which a throttle valve 3 and a disc 4 are attached.
  • a motor lever 6 with a bushing 7 is pushed on and secured by a throttle lever 8 connected to the shaft 2.
  • An electric motor engages on the motor lever 6 via a transmission, the electric motor being controlled in a known manner by an electronic control unit.
  • the throttle lever 8 is held by a spring 9 clamped between the throttle lever 8 and the engine lever 6 against an engine lever stop 10 (FIG. 2) and when the accelerator pedal is actuated beyond an opening amount of the throttle valve 2 set by the engine lever 6, it also lifts off the latter.
  • a sleeve 11 connected to the engine lever bushing 7 has a slot 12 into which one end 13 of the spring 9 clamped between the engine and throttle lever is inserted, and receives a clamp spring 14, which has both ends 15, 16 of an engine lever pin 17 and a housing pin 18 clutched together, as shown in Fig. 2 as a detail from Fig. 1.
  • Fig. 3 shows an alternative to the detail from Fig. 2, in which the clamp spring 14 is mounted in or on a bushing 19 which, as an intermediate member, has a stop 20 for one of the spring legs 15, 16 and a stop 21 for the motor lever pin 17 and one Has stop 22 for the housing pin 18.
  • the other spring leg rests on the housing pin 18 '.
  • This version is suitable for pure e-gas operation, in which there is no need to operate the accelerator pedal via a Bowden cable.
  • the mode of operation of this design is the same as the embodiment according to FIG. 2, but has the advantage of easier assembly compared to the embodiment according to FIG. 2.
  • the positions of the motor lever pin (17) and the spring leg / stop 21 shown in broken lines shows the mode of operation.
  • An accelerator pedal lever travels with a stop in the movement path of the throttle lever 8 with the accelerator pedal drive and forcibly takes it with it, so that the throttle valve 2 is opened. If the engine lever 6 does not follow this throttle valve opening sufficiently quickly, the throttle lever 8 lifts off the engine lever stop 10 with tensioning of the spring 9.
  • the accelerator pedal lever can additionally have a driver stop, which causes the throttle valve 2 to be forced to close when the accelerator pedal is reset. However, this limits a cruise control function.
  • the motor lever 6 assumes a position which is fixed by the motor lever and the housing pins 17, 18. This position of the engine lever 6 causes an emergency opening of the throttle valve 2.
  • the electric motor drive strives to perform speed control of the internal combustion engine, that is, the engine lever 6 is for this purpose from the position fixed by the housing pin 18 into a smaller opening of the throttle valve Position moved, in which case the spring clip 14 is tensioned.
  • the motor lever 6 is adjusted the other way round in the sense of a throttle valve opening, the clamp spring 14 also being tensioned here.
  • the electric motor is designed for a safe adjustment of the motor lever 6, the clamp spring 14 having the same clamp torque in both adjustment directions, which is advantageous for a low drive power of the electric motor, that is, it is only designed for this low power and requires only a small one Installation 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)
  • Means For Warming Up And Starting Carburetors (AREA)

Description

Die Erfindung betrifft einen Drosselklappenstutzen mit Gaspedal- und Elektromotorantrieb nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a throttle valve assembly with accelerator pedal and electric motor drive according to the preamble of claim 1.

Derartige Drosselklappenstutzen sind bekannt und weisen häufig mehrere Rückstellfedern auf, die die Drosselklappe über Hilfehebel in eine Notlaufstellung bringen sollen (DE-A1 41 41 104).Such throttle valve neck are known and often have a plurality of return springs which are intended to bring the throttle valve into an emergency running position via the aid lever (DE-A1 41 41 104).

Zu diesem Zweck müssen die Rückstelffedern sorgfältig aufeinander abgestimmt werden. Die Summe der in Schließrichtung wirkenden Kräfte der ersten und zweiten Rückstellfeder darf nicht größer sein als die in Öffnungsrichtung wirkende Kraft der dritten Rückstellfeder. Andererseits muß der elektromotorische Stellantrieb schon für den Leerlaufregelbereich so stark ausgelegt werden daß er die Drosselklappe in Öffnungsrichtung gegen die erste und zweite Rückstellfeder und in Schließrichtung gegen die dritte Rückstellfeder verstellen kann.For this purpose, the return springs must be carefully coordinated. The sum of the forces of the first and second return springs acting in the closing direction must not be greater than the force of the third return spring acting in the opening direction. On the other hand, the electromotive actuator must be designed so strong for the idle control range that it can adjust the throttle valve in the opening direction against the first and second return spring and in the closing direction against the third return spring.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, die eingangs genannte Einrichtung so weiterzubilden, daß nur eine Rückstellfeder benötigt wird und Hilfshebel und dergleichen entfallen daß heißt die Mechanik vereinfacht wird.Proceeding from this, the object of the invention is to develop the device mentioned at the outset in such a way that only a return spring is required and auxiliary levers and the like are omitted, that is to say the mechanics are simplified.

Diese Aufgabe ist durch die im Patentanspruch 1 genannten Merkmale gelöst worden.
Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.This object has been achieved by the features mentioned in claim 1.
Advantageous further developments are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird mit Angabe erreichbarer Vorteile nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and is described below with details of achievable advantages.

Diese zeigt:

  • Fig. 1
    einen Teilschnitt eines Drosselklappenstutzens,
  • Fig. 2
    eine Einzelheit aus Fig. 1,
  • Fig. 3
    eine alternative zur Einzelheit aus Fig. 2.
This shows:
  • Fig. 1
    a partial section of a throttle valve assembly,
  • Fig. 2
    a detail of Fig. 1,
  • Fig. 3
    an alternative to the detail from FIG. 2.

Fig. 1 zeigt einen Drosselklappenstutzen 1 mit einer Drosselklappenwelle 2, an der eine Drosselklappe 3 und eine Scheibe 4 befestigt sind. Auf dem nach außen ragenden Ende 5 der Drosselklappenwelle 2 ist ein Motorhebel 6 mit einer Buchse 7 aufgeschoben und durch einen mit der Welle 2 verbundenen Drosselhebel 8 gesichert. An den Motorhebel 6 greift ein nicht dargestellter Elektromotor über ein Getriebe an, wobei der Elektromotor von einem elektronischen Steuergerät in bekannter Weise gesteuert wird.Fig. 1 shows a throttle valve assembly 1 with a throttle valve shaft 2, on which a throttle valve 3 and a disc 4 are attached. On the outwardly projecting end 5 of the throttle valve shaft 2, a motor lever 6 with a bushing 7 is pushed on and secured by a throttle lever 8 connected to the shaft 2. An electric motor, not shown, engages on the motor lever 6 via a transmission, the electric motor being controlled in a known manner by an electronic control unit.

Der Drosselhebel 8 ist durch eine zwischen Drosselhebel 8 und Motorhebel 6 eingespannte Feder 9 gegen einen Motorhebelanschlag 10 gehalten (Fig. 2) und bei Gaspedalbetätigung über einen vom Motorhebel 6 eingestellten Öffnungsbetrag der Drosselklappe 2 hinaus hebt er von diesem ab.The throttle lever 8 is held by a spring 9 clamped between the throttle lever 8 and the engine lever 6 against an engine lever stop 10 (FIG. 2) and when the accelerator pedal is actuated beyond an opening amount of the throttle valve 2 set by the engine lever 6, it also lifts off the latter.

Eine mit der Motorhebelbuchse 7 verbundene Hülse 11 weist einen Schlitz 12 auf, in den ein Ende 13 der zwischen Motor- und Drosselhebel eingespannten Feder 9 eingeschoben ist, und nimmt eine Klammerfeder 14 auf, die mit ihren beiden Enden 15, 16 einen Motorhebelzapfen 17 und einen Gehäuserzapfen 18 gemeinsam umklammert, wie in Fig. 2 als Einzelheit aus Fig. 1 dargestellt ist.A sleeve 11 connected to the engine lever bushing 7 has a slot 12 into which one end 13 of the spring 9 clamped between the engine and throttle lever is inserted, and receives a clamp spring 14, which has both ends 15, 16 of an engine lever pin 17 and a housing pin 18 clutched together, as shown in Fig. 2 as a detail from Fig. 1.

Fig. 3 zeigt eine Alternative zur Einzelheit aus Fig. 2, bei der die Klammerfeder 14 in oder auf einer Buchse 19 gelagert ist, die als Zwischenglied einen Anschlag 20 für einen der Federschenkel 15, 16 und einen Anschlag 21 für den Motorhebelzapfen 17 sowie einen Anschlag 22 für den Gehäusezapfen 18 aufweist. Der andere Federschenkel liegt an dem Gehäusezapfen 18' an. Diese Ausführung eignet sich für reinen E-Gas-Betrieb, bei dem die Gaspedal-betätigung über einen Bowdenzug entfällt.Fig. 3 shows an alternative to the detail from Fig. 2, in which the clamp spring 14 is mounted in or on a bushing 19 which, as an intermediate member, has a stop 20 for one of the spring legs 15, 16 and a stop 21 for the motor lever pin 17 and one Has stop 22 for the housing pin 18. The other spring leg rests on the housing pin 18 '. This version is suitable for pure e-gas operation, in which there is no need to operate the accelerator pedal via a Bowden cable.

Die Funktionsweise dieser Ausbildung ist gleich der Ausführung nach Fig. 2, hat jedoch den Vorteil einer erleichterten Montage gegenüber der Ausführung nach Fig. 2. Die gestrichelt dargestellten Positionen des Motorhebelzapfens (17) bzw. des Federschenkels/Anschlags 21 zeigt die Wirkweise.The mode of operation of this design is the same as the embodiment according to FIG. 2, but has the advantage of easier assembly compared to the embodiment according to FIG. 2. The positions of the motor lever pin (17) and the spring leg / stop 21 shown in broken lines shows the mode of operation.

Ein nicht dargestellter Gaspedalhebel wandert bei Gaspedalantrieb mit einem Anschlag in die Bewegungsbahn des Drosselhebels 8 und nimmt diesen zwangsweise mit, so daß die Drosselklappe 2 geöffnet wird. Falls der Motorhebel 6 dieser Drosselklappenöffnung nicht ausreichend schnell folgt, hebt der Drosselhebel 8 von dem Motorhebelanschlag 10 ab unter Verspannung der Feder 9.An accelerator pedal lever, not shown, travels with a stop in the movement path of the throttle lever 8 with the accelerator pedal drive and forcibly takes it with it, so that the throttle valve 2 is opened. If the engine lever 6 does not follow this throttle valve opening sufficiently quickly, the throttle lever 8 lifts off the engine lever stop 10 with tensioning of the spring 9.

Der nicht dargestellte Gaspedalhebel kann zusätzlich einen Mitnehmeranschlag aufweisen, der bei Gaspedalrückstellung eine Zwangsschließung der Drosselklappe 2 bewirkt. Hierdurch wird jedoch eine Tempomatfunktion eingeschränkt.The accelerator pedal lever, not shown, can additionally have a driver stop, which causes the throttle valve 2 to be forced to close when the accelerator pedal is reset. However, this limits a cruise control function.

Fällt der Elektromotorantrieb des Motorhebels 6 oder die zugehörige elektronische Steuerung aus, dann nimmt der Motorhebel 6 eine Stellung ein, die durch den Motorhebel- und den Gehäusezapfen 17, 18 fixiert ist. Diese Position des Motorhebels 6 bewirkt eine Notlauföffnung der Drosselklappe 2. Bei normalem Leerlaufbetrieb ist der Elektromotorantrieb bestrebt, eine Drehzahlregelung der Brennkraftmaschine auszuführen, daß heißt, der Motorhebel 6 wird hierfür aus der durch den Gehäusezapfen 18 fixierten Stellung in eine eine kleinere Öffnung der Drosselklappe bewirkende Stellung bewegt, wobei hierbei die Klammerfeder 14 verspannt wird.If the electric motor drive of the motor lever 6 or the associated electronic control fails, the motor lever 6 assumes a position which is fixed by the motor lever and the housing pins 17, 18. This position of the engine lever 6 causes an emergency opening of the throttle valve 2. In normal idle operation, the electric motor drive strives to perform speed control of the internal combustion engine, that is, the engine lever 6 is for this purpose from the position fixed by the housing pin 18 into a smaller opening of the throttle valve Position moved, in which case the spring clip 14 is tensioned.

Im Falle einer Tempomatfunktion wird andersherum der Motorhebel 6 im Sinne einer Drosselklappenöffnung verstellt, wobei auch hier die Klammerfeder 14 verspannt wird. Der Elektromotor ist ausgelegt für eine sichere Verstellung des Motorhebels 6, wobei die Klammerfeder 14 in beide Verstellrichtungen das gleiche Klammermoment aufweist, was vorteilhaft für eine geringe Antriebsleistung des Elektromotors ist, daß heißt, dieser ist nur für diese geringe Leistung ausgelegt und benötigt nur einen kleinen Bauraum.In the case of a cruise control function, the motor lever 6 is adjusted the other way round in the sense of a throttle valve opening, the clamp spring 14 also being tensioned here. The electric motor is designed for a safe adjustment of the motor lever 6, the clamp spring 14 having the same clamp torque in both adjustment directions, which is advantageous for a low drive power of the electric motor, that is, it is only designed for this low power and requires only a small one Installation space.

Claims (4)

  1. Throttle venturi control unit with an accelerator-pedal and electromotive drive, the latter acting upon a motor lever (6) which in neutral position assumes an emergency running position, which is fixed by spring action and adjusts a throttle lever (8) in such a way that the throttle valve (3) undergoes a corresponding emergency running opening, the electromotive drive being capable of displacing the motor lever (6) counter to the spring action in the direction of an opening or closing position of the throttle valve (3), characterized in that the spring action is provided by a clamping spring (14) which, with its two ends (15, 16), jointly embraces a motor lever journal (17) and a housing journal (18).
  2. Throttle venturi control unit according to claim 1, characterized in that the clamping spring (14) is supported in or on a bush (19) which, as an intermediate element, comprises a stop (20) for one of the spring limbs (15, 16) and a stop (21) for the motor lever journal (17) as well as a stop (22) for the housing journal (18).
  3. Throttle venturi control unit according to claim 1 or 2, characterized in that clamping spring (14) and motor lever (6) are disposed concentrically relative to the throttle valve shaft (2).
  4. Throttle venturi control unit according to claim 2, characterized in that the throttle lever (8) is held by a spring (9), which is clamped in between throttle lever (8) and motor lever (6), against a motor lever stop (10) and, upon operation of the accelerator pedal beyond an opening amount of the throttle valve (2) adjusted by the motor lever (6), lifts off from said motor lever stop (10).
EP94114802A 1993-10-30 1994-09-20 Throttle valve body Expired - Lifetime EP0651147B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4337184 1993-10-30
DE4337184A DE4337184A1 (en) 1993-10-30 1993-10-30 Throttle body

Publications (2)

Publication Number Publication Date
EP0651147A1 EP0651147A1 (en) 1995-05-03
EP0651147B1 true EP0651147B1 (en) 1996-11-13

Family

ID=6501484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114802A Expired - Lifetime EP0651147B1 (en) 1993-10-30 1994-09-20 Throttle valve body

Country Status (3)

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EP (1) EP0651147B1 (en)
DE (2) DE4337184A1 (en)
ES (1) ES2094610T3 (en)

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
US5429090A (en) * 1994-02-28 1995-07-04 Coltec Industries Inc. Fail safe throttle positioning system
EP0714478B1 (en) * 1994-06-18 2000-04-26 AB Elektronik GmbH Throttle valve device
US5492097A (en) * 1994-09-30 1996-02-20 General Motors Corporation Throttle body default actuation
DE19519836C5 (en) * 1995-05-31 2010-10-14 Continental Automotive Gmbh A load adjustment
DE19524941B4 (en) * 1995-07-08 2006-05-18 Siemens Ag load adjusting
DE19633513C2 (en) * 1996-08-20 2003-10-09 Pierburg Gmbh throttle body
EP0828067B1 (en) * 1996-09-03 2005-01-12 Hitachi, Ltd. A throttle valve control device for an internal combustion engine
DE19704012B4 (en) * 1997-02-04 2007-02-01 Pierburg Gmbh throttle body
DE19735046A1 (en) 1997-08-13 1999-04-22 Pierburg Ag Arrangement of a spring clip
FR2781525B1 (en) * 1998-07-22 2000-09-22 Coutier Moulage Gen Ind MOTORIZED BUTTERFLY HOUSING COMPRISING A "LIMP HOME" SECURITY DEVICE
DE19843769A1 (en) * 1998-09-24 2000-03-30 Mannesmann Vdo Ag Load adjustment device
JP3511577B2 (en) † 1998-10-06 2004-03-29 株式会社日立製作所 Throttle device for internal combustion engine
US6244565B1 (en) 1999-01-29 2001-06-12 Ford Global Technologies, Inc. Throttle body shaft axial play control
US6155533C1 (en) * 1999-01-29 2002-07-30 Visteon Global Tech Inc Default mechanism for electronic throttle control system
US6070852A (en) * 1999-01-29 2000-06-06 Ford Motor Company Electronic throttle control system
US6095488A (en) * 1999-01-29 2000-08-01 Ford Global Technologies, Inc. Electronic throttle control with adjustable default mechanism
US6375151B1 (en) * 1999-09-08 2002-04-23 Siemens Canada Limited Return spring mechanism for an electronic throttle control assembly
US6253732B1 (en) 1999-11-11 2001-07-03 Ford Global Technologies, Inc. Electronic throttle return mechanism with a two-spring and two-lever default mechanism
US6286481B1 (en) 1999-11-11 2001-09-11 Ford Global Technologies, Inc. Electronic throttle return mechanism with a two-spring and one lever default mechanism
DE10013917A1 (en) * 2000-03-21 2001-09-27 Bosch Gmbh Robert Throttle valve return device has compensation spring prestressed with force opposite to that of clamping spring

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DE1934200C3 (en) * 1969-07-05 1978-08-24 Daimler-Benz Ag, 7000 Stuttgart Adjustment device for the idle stop position of the throttle valve of an internal combustion engine
US4946012A (en) * 1989-07-20 1990-08-07 James G. Wells Brake activated acceleration override apparatus
DE4027269A1 (en) * 1990-08-29 1992-03-05 Vdo Schindling THROTTLE VALVE CONNECTOR
DE4039937A1 (en) * 1990-12-14 1992-06-17 Audi Ag Idling speed control for combustion engine throttle - providing slight reopening after servomotor failure by spring-impelled rotation of lever and jointed linkage
DE4134876C2 (en) * 1991-10-23 1997-02-27 Vdo Schindling Device for adjusting a throttle valve
DE4141104C2 (en) * 1991-12-13 1995-09-07 Vdo Schindling Device for adjusting a throttle valve
DE4207096A1 (en) * 1992-03-06 1993-09-09 Pierburg Gmbh Throttle valve movement control appts. for IC engine carburettor - has spring-loaded control lever from accelerator pedal coupled to throttle valve lever by two-part coupling spring

Also Published As

Publication number Publication date
DE4337184A1 (en) 1995-05-04
ES2094610T3 (en) 1997-01-16
DE59401041D1 (en) 1996-12-19
EP0651147A1 (en) 1995-05-03

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