EP0523432B1 - Positioning device for the throttle of a combustion engine - Google Patents
Positioning device for the throttle of a combustion engine Download PDFInfo
- Publication number
- EP0523432B1 EP0523432B1 EP92110907A EP92110907A EP0523432B1 EP 0523432 B1 EP0523432 B1 EP 0523432B1 EP 92110907 A EP92110907 A EP 92110907A EP 92110907 A EP92110907 A EP 92110907A EP 0523432 B1 EP0523432 B1 EP 0523432B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- throttle
- adjusting device
- actuating lever
- lever
- spring
- 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
Links
Images
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
- F02D2009/0264—Arrangements; Control features; Details thereof in which movement is transmitted through a spring
-
- 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
- F02D2009/0267—Arrangements; Control features; Details thereof for simultaneous action of a governor and an accelerator lever on the throttle
-
- 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
-
- 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
- the invention relates to an adjusting device for a throttle valve of an internal combustion engine according to the preamble of claim 1.
- the object of the invention is to design an actuating device mentioned at the outset in such a way that a more precise position of the levers 2 and 6 relative to one another and a more precise adjustment of the spring torque can be achieved.
- Fig. 1 shows schematically an actuating device 1, consisting of an actuating lever 2 connected to the accelerator pedal of a motor vehicle, which, in the idle position under the force of a return spring 3, bears against an adjustable idling stop 4, which can correspond to an increased idling speed in relation to the throttle valve position, one with a throttle valve shaft 5 fixedly connected throttle lever 6, a throttle valve 7 arranged on the throttle valve shaft 5, which is arranged in an air intake duct section of an internal combustion engine, not shown.
- an actuating device 1 consisting of an actuating lever 2 connected to the accelerator pedal of a motor vehicle, which, in the idle position under the force of a return spring 3, bears against an adjustable idling stop 4, which can correspond to an increased idling speed in relation to the throttle valve position, one with a throttle valve shaft 5 fixedly connected throttle lever 6, a throttle valve 7 arranged on the throttle valve shaft 5, which is arranged in an air intake duct section of an internal combustion engine, not shown.
- the throttle valve shaft 5 on the other hand, carries a disk 8 of an electromagnetic clutch 9, the other disk 10 of which is arranged on a gear lever 11, on which an electric motor 12 engages with a pinion 13.
- the electric motor 12 receives electrical control signals from a control unit (not shown) and adjusts the throttle valve 7 in accordance with the accelerator pedal position and a control control program stored in the control unit, which functions as a function of operating parameters of the internal combustion engine.
- the position of the actuating lever 2 is determined by a setpoint potentiometer 14 and that of the gear lever 11 by an actual value potentiometer 15 and fed to the control unit.
- a leg spring 16 is arranged as a coupling spring, which clamps the two levers 2 and 6 together under tension in a predetermined position.
- This position of the two levers 2 and 6 is only changed when one of the levers 2 and 6 has the spring moment caused by the leg spring 16 overcomes what is the case when the higher-level adjustment of the throttle valve 7 by the electric motor 12 deviates from the adjustment of the actuating lever 2, ie the spring torque can be overcome in both directions, as a result of which a throttle valve position specified by the actuating lever 2 is above or below lying can be adjusted.
- FIG. 2 and 3 show the arrangement according to the invention of the leg spring 16 in a spring cup 17 as a detail, the spring cup 17 being freely rotatably mounted on the throttle valve shaft 5 and receiving the leg spring 16 with a leg 18 on the outer edge.
- the leg spring 16 wound in the pot 17 presses the two levers 2 and 6 projecting through a recess 19 through the pot 17 with their free leg 20 under tension against a recess wall 21. If the predetermined position of the two levers 2 and 6 is now changed relative to one another, then one lever always holds the spring cup 17 and the other lever holds the free leg 21 of the leg spring 16 firmly (FIG. 3).
- the spring torque can thus also be overcome in both directions. Compared to the embodiment according to FIG.
- this embodiment results in a more precise position of the levers 2 and 6 relative to one another due to their abutment on the machined wall 21 and enables a more precise adjustment of the spring torque.
- the spring cup 17 offers the possibility of arranging two springs (redundant system) and protection against contamination.
- the new control device enables engine operation with speed control.
- the magnetic coupling 9 separates the gear lever 11 from the throttle valve shaft 5, so that the Lever 2 and 6 remain in their specified position or get into it by the spring torque.
- the throttle valve 7 only follows the adjustments caused by the actuating lever 2, as in a previously conventional mechanical transmission system.
- the throttle valve 7 is adjusted exclusively via the electric motor 12, with further signals for detecting a failure, e.g. B. from the brake system can be processed in the control unit.
- the aforementioned setting of the idle stop for an increased speed offers the possibility of an emergency operation with limited function.
- leg spring can also be replaced by two springs connected in parallel, which, just as with the return springs of the actuating lever, provides a redundant system.
- the actuating lever can have one or two stops protruding into the movement path of the throttle lever 6, which, however, are not shown because of the conceivability, in which case the electrical magnetic coupling 9 can be omitted.
Landscapes
- 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 eine Stellvorrichtung für eine Drosselklappe einer Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an adjusting device for a throttle valve of an internal combustion engine according to the preamble of
Aus der DE-OS 40 27 269 nicht vor veröffentlicht ist eine Stellvorrichtung bekannt, bei der ein Stellhebel und eine mit diesem verbundene Koppelfeder auf die Drosselklappe einwirkt, wobei diese nach Maßgabe von Steuersignalen durch einen Elektromotor verstellt werden kann. Bei dieser Einrichtung ist eine aktive Verstellung der Drosselklappe durch den Elektromotor unabhängig von der Gaspedalstellung erreichbarFrom DE-OS 40 27 269 not published before an actuator is known in which an actuating lever and a coupling spring connected thereto acts on the throttle valve, which can be adjusted according to control signals by an electric motor. With this device, an active adjustment of the throttle valve can be achieved by the electric motor independently of the accelerator pedal position
Eine ähnliche Vorrichtung zeigt auch die US-A-4961355.A similar device is also shown in US-A-4961355.
Bei dieser Anordnung ist die Position der Hebel zueinander äußerst ungenau und das Koppelmoment läßt sich nicht justieren.With this arrangement, the position of the levers relative to one another is extremely imprecise and the coupling torque cannot be adjusted.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine eingangs erwähnte Stellvorrichtung derart zu gestalten, daß eine genauere Position der Hebel 2 und 6 zueinander und eine genauere Justage des Federmomentes ereichbar wird.Proceeding from this, the object of the invention is to design an actuating device mentioned at the outset in such a way that a more precise position of the
Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst worden, vorteilhafte Weiterbildungen des Gegenstandes nach Anspruch 1 sind in Unteransprüchen angegeben.This object has been achieved by the features specified in the characterizing part of
Mit der Erfindung erreichbare Vorteile sind in der nachfolgenden Beschreibung von Ausführungsbeispielen angegeben, die in der Zeichnung dargestellt sind.Advantages achievable with the invention are specified in the following description of exemplary embodiments, which are shown in the drawing.
Die Zeichnung zeigt:
- Fig. 1
eine schematische Darstellung der Stellvorrichtung, - Fig. 2 und 3
eine Ausführung nach der Erfindung.
- Fig. 1
a schematic representation of the actuating device, - 2 and 3
an embodiment according to the invention.
Fig. 1 zeigt schematisch eine Stellvorrichtung 1, bestehend aus einem mit dem Gaspedal eines Kraftfahrzeuges verbundenen Betätigungshebel 2, der in Leerlaufstellung unter der Kraftwirkung einer Rückdrehfeder 3 gegen einen einstellbaren Leerlaufanschlag 4 anliegt, der in bezug auf die Drosselklappenstellung einer erhöhten Leerlaufdrehzahl entsprechen kann, einem mit einer Drosselklappenwelle 5 fest verbundenen Drosselhebel 6, einer auf der Drosselklappenwelle 5 angeordneten Drosselklappe 7, die in einem Luftansaugkanalabschnitt einer nicht dargestellten Brennkraftmaschine angeordnet ist.Fig. 1 shows schematically an
Die Drosselklappenwelle 5 trägt andererseits eine Scheibe 8 einer elektromagnetischen Kupplung 9, deren andere Scheibe 10 an einem Getriebehebel 11 angeordnet ist, an den ein Elektromotor 12 mit einem Ritzel 13 eingreift. Der Elektromotor 12 erhält elektrische Steuersignale eines nicht dargestellten Steuergerätes und verstellt die Drosselklappe 7 nach Maßgabe der Gaspedalstellung und eines im Steuergerät abgelegten Steuerregelprogramms, das in Abhängigkeit von Betriebsparametern der Brennkraftmaschine funktioniert. Die Stellung des Betätigungshebels 2 wird durch ein Sollwertpotentiometer 14 und die des Getriebehebels 11 durch ein Istwertpotentiometer 15 festgestellt und dem Steuergerät zugeführt.The
Zwischen dem Betätigungshebel 2 und dem Drosselhebel 6 ist eine Schenkelfeder 16 als Koppelfeder angeordnet, die die beiden Hebel 2 und 6 unter Spannung in einer vorgegebenen Position zusammenklammert. Diese Position der beiden Hebel 2 und 6 wird nur dann verändert, wenn einer der Hebel 2 und 6 das von der Schenkelfeder 16 bewirkte Federmoment überwindet, was dann der Fall ist, wenn die übergeordnete Verstellung der Drosselklappe 7 durch den Elektromotor 12 von der Verstellung des Betätigungshebels 2 abweicht, d. h. in beide Richtungen kann das Federmoment überwunden werden, wodurch eine gegenüber der durch den Betätigungshebel 2 vorgegebenen Drosselklappenstellung darüber oder darunter liegende eingestellt werden kann.Between the actuating
Fig. 2 und 3 zeigen die erfindungsgemäße Anordnung der Schenkelfeder 16 in einem Federtopf 17 als Einzelheit, wobei der Federtopf 17 frei drehbar auf der Drosselklappenwelle 5 gelagert ist und die Schenkelfeder 16 mit einem Schenkel 18 am äußeren Rand aufnimmt. Die im Topf 17 aufgewickelte Schenkelfeder 16 drückt die beiden durch eine Ausnehmung 19 durch den Topf 17 hindurchragenden Hebel 2 und 6 mit ihrem freien Schenkel 20 unter Spannung gegen eine Ausnehmungswand 21.
Wird nun die vorgegebene Position der beiden Hebel 2 und 6 zueinander verändert, dann hält ein Hebel immer den Federtopf 17 und der andere Hebel den freien Schenkel 21 der Schenkelfeder 16 fest (Fig. 3). Somit kann das Federmoment ebenso in beide Richtungen überwunden werden. Gegenüber der Ausführung nach Fig. 1 ergibt diese Ausführung eine genauere Position der Hebel 2 und 6 zueinander durch ihre Anlage an der bearbeiteten Wand 21 und ermöglicht eine genauere Justage des Federmomentes. Darüber hinaus bietet der Federtopf 17 die Möglichkeit, zwei Federn anzuordnen (redundantes System) und Schutz vor Verschmutzung.2 and 3 show the arrangement according to the invention of the
If the predetermined position of the two
Die neue Stellvorrichtung ermöglicht einen Motorbetrieb mit Geschwindigkeitsregelung.The new control device enables engine operation with speed control.
Bei Ausfall des Elektromotors 12 oder der Ansteuersignale trennt die Magnetkupplung 9 den Getriebehebel 11 von der Drosselklappenwelle 5 ab, so daß die Hebel 2 und 6 in ihrer vorgegebenen Position verharren oder in diese durch das Federmoment gelangen. Somit folgt die Drosselklappe 7 nur noch den durch den Betätigungshebel 2 verursachten Verstellungen, wie bei einem bisher üblichen mechanischen Übertragungssystem.
Bei Ausfall des Gaspedalbetätigungshebelsystems (z. B. durch Kabelbruch, Federbruch) erfolgt die Verstellung der Drosselklappe 7 ausschließlich über den Elektromotor 12, wobei weitere Signale zur Feststellung eines Ausfalls, z. B. vom Bremssystem, im Steuergerät verarbeitet werden können. Bei Ausfall beider Systeme bietet die erwähnte Einstellung des Leerlaufanschlags für eine erhöhte Drehzahl die Möglichkeit eines Notbetriebs mit eingeschränkter Funktion.If the
In the event of failure of the accelerator pedal actuation lever system (e.g. due to cable break, spring break), the
Es versteht sich von selbst, daß die Schenkelfeder auch durch zwei parallel geschaltete Federn ersetzt werden kann, womit ebenso wie bei den Rückdrehfedern des Betätigungshebels ein redundantes System besteht.It goes without saying that the leg spring can also be replaced by two springs connected in parallel, which, just as with the return springs of the actuating lever, provides a redundant system.
Für den Fall, daß die Stellvorrichtung nur eine eingeschränkte Verstellung der Drosselklappe durch den Elektromotor zulassen soll, kann der Betätigungshebel ein oder zwei in die Bewegungsbahn des Drosselhebels 6 hineinragende Anschläge aufweisen, die jedoch der Vorstellbarkeit wegen nicht extra dargestellt werden, wobei dann die elektrische Magnetkupplung 9 entfallen kann.In the event that the adjusting device should only allow a restricted adjustment of the throttle valve by the electric motor, the actuating lever can have one or two stops protruding into the movement path of the
Claims (6)
- Adjusting device for a throttle of an internal combustion engine, consisting of an actuating lever (2) connected to the accelerator and subjected to the action of one or more back-twist springs (3), a throttle lever (6) connected to the throttle (7) and coupled to the actuating lever (2) under the action of a coupling spring (16), an electric servomotor (12), which acts on the throttle (7) via a transmission, wherein the coupling spring (16) couples the actuating lever (2) and the throttle (6) together in both directions of rotation, characterised in that the coupling spring (16), the levers (2, 6) and a helical spring (17) are disposed concentrically to the throttle valve shaft (5), and the coupling spring (16) is both fixed to the rotatably mounted helical spring (17) and stresses said levers with the coupling moment against a recessed wall (21) of the helical spring (17).
- Adjusting device according to claim 1, characterised in that an electromagnetic clutch (9) is disposed between the servomotor (12) or transmission (11) and the throttle (7).
- Adjusting device according to one of the preceding claims, characterised in that the actuating lever (2) bears against an adjustable idling stop (4), which corresponds to an increased idling speed relative to the throttle setting.
- Adjusting device according to one of the preceding claims, characterised in that the actuating lever (2) is coupled to a reference value potentiometer (14).
- Adjusting device according to claim 4, characterised in that the throttle lever (6) or transmission (11) or servomotor (12) is coupled to an actual value potentiometer (15).
- Adjusting device according to one of the preceding claims, characterised in that the actuating lever (2) has one or two stops projecting into the path of motion of the throttle lever (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4121890A DE4121890A1 (en) | 1991-07-02 | 1991-07-02 | ACTUATING DEVICE FOR A THROTTLE VALVE OF AN INTERNAL COMBUSTION ENGINE |
DE4121890 | 1991-07-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0523432A2 EP0523432A2 (en) | 1993-01-20 |
EP0523432A3 EP0523432A3 (en) | 1993-08-11 |
EP0523432B1 true EP0523432B1 (en) | 1995-03-01 |
Family
ID=6435267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92110907A Expired - Lifetime EP0523432B1 (en) | 1991-07-02 | 1992-06-27 | Positioning device for the throttle of a combustion engine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0523432B1 (en) |
DE (2) | DE4121890A1 (en) |
ES (1) | ES2068647T3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5562081A (en) * | 1995-09-12 | 1996-10-08 | Philips Electronics North America Corporation | Electrically-controlled throttle with variable-ratio drive |
DE19721239A1 (en) * | 1997-05-21 | 1998-12-03 | Hella Kg Hueck & Co | Choke flap actuating arrangement for internal combustion engines |
DE19735046A1 (en) * | 1997-08-13 | 1999-04-22 | Pierburg Ag | Arrangement of a spring clip |
DE10102776A1 (en) * | 2001-01-23 | 2002-07-25 | Bosch Gmbh Robert | Manual return device for the choke flap of a combustion engine, has spring and cam mechanism with reduced play so that the choke flap can be accurately positioned should its electric drive fail |
DE10102775A1 (en) * | 2001-01-23 | 2002-07-25 | Bosch Gmbh Robert | Manual return device for the choke flap of a combustion engine, has spring and cam mechanism with reduced play , so that the choke flap can be accurately positioned, should its electric drive fail |
US7096851B2 (en) * | 2003-06-26 | 2006-08-29 | Honda Motor Co., Ltd. | Throttle device for multipurpose engine |
DE102011107088C5 (en) * | 2011-07-11 | 2019-10-02 | Friedrich Boysen Gmbh & Co. Kg | Valve device |
DE102020129151B4 (en) | 2020-11-05 | 2022-08-18 | ATJ Automotive GmbH | Exhaust system for motor vehicles |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3815734A1 (en) * | 1987-07-23 | 1989-02-02 | Vdo Schindling | LOAD ADJUSTMENT DEVICE |
JPH0646010B2 (en) * | 1988-07-14 | 1994-06-15 | 本田技研工業株式会社 | Throttle control device |
DE4027269A1 (en) * | 1990-08-29 | 1992-03-05 | Vdo Schindling | THROTTLE VALVE CONNECTOR |
-
1991
- 1991-07-02 DE DE4121890A patent/DE4121890A1/en not_active Withdrawn
-
1992
- 1992-06-27 EP EP92110907A patent/EP0523432B1/en not_active Expired - Lifetime
- 1992-06-27 DE DE59201516T patent/DE59201516D1/en not_active Expired - Fee Related
- 1992-06-27 ES ES92110907T patent/ES2068647T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0523432A2 (en) | 1993-01-20 |
EP0523432A3 (en) | 1993-08-11 |
ES2068647T3 (en) | 1995-04-16 |
DE59201516D1 (en) | 1995-04-06 |
DE4121890A1 (en) | 1993-01-07 |
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