EP1005608B1 - Load setting device - Google Patents
Load setting device Download PDFInfo
- Publication number
- EP1005608B1 EP1005608B1 EP98946329A EP98946329A EP1005608B1 EP 1005608 B1 EP1005608 B1 EP 1005608B1 EP 98946329 A EP98946329 A EP 98946329A EP 98946329 A EP98946329 A EP 98946329A EP 1005608 B1 EP1005608 B1 EP 1005608B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- actuating
- adjustment device
- torsion spring
- 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
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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
- 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
- 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
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- 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 load adjustment device according to the preamble of claim 1 for the performance of a Internal combustion engine determining, in particular designed as a throttle valve, actuator arranged on an actuating shaft, the actuating shaft via a non-rotatable actuator connected to it by means of a reversible Actuator between a minimum load position and a Full load position is pivotally drivable with a torsion spring preloaded return spring that moves the control shaft in the minimum load direction acted upon and an emergency running spring through which the adjusting shaft in Full load direction is movable up to an emergency running position.
- a Internal combustion engine determining, in particular designed as a throttle valve, actuator arranged on an actuating shaft, the actuating shaft via a non-rotatable actuator connected to it by means of a reversible Actuator between a minimum load position and a Full load position is pivotally drivable with a torsion spring preloaded return spring that moves the control shaft in the minimum load direction acted upon and an emergency running spring
- Load adjustment devices of the above type are generally under the Description E-gas for power adjustment of the internal combustion engine from Motor vehicles known. With them is to minimize fuel consumption the minimum load position designed so that the internal combustion engine runs smoothly when idling. That leads to it sufficient torque is not possible in the minimum load position generate to move the motor vehicle. However, this may be necessary be driven when the motor vehicle is out of a danger area must be, however, the load adjustment device due to a failure the control electronics or the actuator no longer by actuation of the accelerator pedal can be adjusted.
- the emergency running spring required to reach the emergency running position is required - apart from the costs - a corresponding space and leads to an increase in weight compared to a load adjustment device without inevitable movement in an emergency running position with one Malfunction.
- the invention is based on the problem of a load adjustment device of the type mentioned in such a way that they are as compact as possible is constructed and inexpensive to manufacture.
- the return spring and the emergency running spring are formed by a single torsion spring, the first end is connected to the actuating shaft and the other end between the emergency running position and the minimum load position using a the actuating gear coupled minimum load gear against the force the torsion spring is movable.
- the only torsion spring is used as a return spring and doubled as an emergency running spring and depending on the setting angle the control shaft either directly via the control gear or with minimum load gear coupled to the actuating gear.
- the control shaft therefore swings automatically from any position into the emergency running position, if no forces act on the actuator.
- the load adjustment device according to the invention is designed particularly compact and can therefore be manufactured very inexpensively. Farther needs the load adjustment device according to the invention in addition to Actuator only a particularly simple minimal load gearbox.
- the torsion spring could be preloaded by the minimum load gear for example, that the second end of the torsion spring a holding part which is adjustable by the minimum load gear is attached.
- the torsion spring must be preloaded by the minimum load gear however, according to an advantageous development of the invention, a special one little construction when the second end of the torsion spring between the emergency running position and the full load position at one stop is present and between the emergency running position and the minimum load position is movable away from the stop.
- the control gear can be according to another advantageous development arrange the invention in a space-saving manner in the load adjustment device, when the actuator is for meshing with a gear of the actuator trained tooth segment.
- the actuating gear has the invention a particularly low overall height when the actuator a large-diameter intermediate gear driven by a drive pinion which has a pivoting part small diameter gear is rotatably and coaxially connected.
- This Design also has the advantage that the breakage of the torsion spring Actuating shaft is pivoted by the actuator. A defect in one leads only component of the load adjustment device according to the invention therefore not to a complete failure of the controlled Internal combustion engine.
- the minimum load gear requires another advantageous one Development of the invention requires particularly little construction, if there is a cam on the idler gear for moving the second end of the torsion spring is arranged.
- the cam can open be trained in a variety of ways.
- the cam designed as a one-piece with the intermediate gear pin or be formed by a freely rotatable roller.
- the torsion spring is claimed the invention particularly little space if it is a coil spring.
- the torsion spring is according to another advantageous development Invention reliably held in position when the idler gear bearing housing a laterally against the torsion spring Guide part is attached.
- a limitation of the control range of the control shaft requires according to another advantageous development of the invention a particularly low construction effort, if one in minimum load position and in full load position stop plate against fixed stops is rotatably attached to the control shaft.
- the attacks for setting a idle gas or a full load limit be adjustable.
- Load adjustment device helps when the actuator and the stop plate are made in one piece.
- FIG. 1 shows a portion of a housing 1 of a throttle valve assembly.
- an actuating shaft 2 is mounted, in which it can be a throttle valve shaft on which a not shown Throttle valve is arranged.
- a rotationally fixed seat on the adjusting shaft 2 a toothed segment 3 having actuator 4, which by means of an actuator 5 is pivotable.
- the actuating gear 5 has a servomotor 6, which has a drive pinion 7 large-diameter intermediate gear 8 drives.
- This intermediate gear 8 is in one piece with a small-diameter gear 9 and a radial protruding cams 10 made and mounted on an axis 11.
- the actuator 4 having the toothed segment 3 is permanently in the Engagement with the gear 9 arranged on the intermediate gear 8.
- the throttle valve assembly has a torsion spring 18, which with one end is attached to the actuating shaft 2 and the other end 12 abuts a stop 13 fixed to the housing.
- a stop plate 14 arranged in a rotationally fixed manner.
- the housing 1 has a stop 15 in the area of the stop plate 14.
- FIGS 2 to 4 show the operation of the throttle valve assembly from Figure 1 in a view from above in different positions.
- the stop plate 14 has a full load arm 16 and has a minimum load arm 17.
- the second end 12 of the torsion spring 18 is angled and projects beyond the stop 13 into the movement path of the cam 10 arranged on the intermediate gear 8.
- This guide part 19 can with appropriate Design of the stop plate 14 also as a stop for the Minimum load position can be used.
- Figure 2 shows the load adjustment device in full load.
- the intermediate gear 8 by means of in Figure 1 shown actuator 6 deflected clockwise. hereby pivots the gear 9 of the actuator 5, the toothed segment 3 of the actuator 4 counterclockwise until the full load arm 16 of the stop plate 14 comes against the stop 15 of the housing 1. Since that Control part 4 and one end of the torsion spring 18 rotatably with the control shaft 2 are connected, the actuating shaft 2 is deflected and the torsion spring 18th curious; excited. The second end 12 of the torsion spring 18 lies here on the stop 13 on.
- FIG. 4 shows the throttle valve connector in the minimum load position, in which the minimum load arm 17 of the stop plate 14 on the housing-fixed Stop 15 is present.
- This minimum load position becomes the emergency running position achieved in that the drive pinion 7 shown in Figure 1 Actuator 6, the intermediate gear 8 counterclockwise adjusted.
- the actuating shaft 2 is deflected via the actuating gear 5.
- the cam 10 lifts the second end 12 of the torsion spring 18 from the stop 13.
- the cam 10 and the second end 12 of the Torsion spring 18 thus form a minimum load gear 20.
- the Emergency running position is therefore inevitable by the force of the torsion spring 18 reached when the servomotor 6 shown in Figure 1 is no longer energized becomes.
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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)
- Transmission Devices (AREA)
- Gear Transmission (AREA)
Description
Die Erfindung betrifft eine Lastverstellvorrichtung gemäß Oberbegriff des Anspruchs 1 für ein die Leistung einer
Brennkraftmaschine bestimmendes, insbesondere als Drosselklappe ausgebildetes,
auf einer Stellwelle angeordnetes Stellglied, wobei die Stellwelle
über ein drehfest mit ihr verbundenes Stellteil mittels eines reversierbaren
Stellgetriebes zwischen einer Minimallaststellung und einer
Vollaststellung schwenkbar antreibbar ist, mit einer als Drehfeder ausgebildeten,
vorgespannten Rückstellfeder, die die Stellwelle in Minimallastrichtung
beaufschlagt und einer Notlauffeder, durch die die Stellwelle in
Vollastrichtung bis zu einer Notlaufstellung bewegbar ist.The invention relates to a load adjustment device according to the preamble of
Lastverstellvorrichtungen der vorstehenden Art (siehe Z.B. DE-A-19524941), sind allgemein unter der Bezeichnung E-Gas zur Leistungsverstellung der Brennkraftmaschine von Kraftfahrzeugen bekannt. Bei ihnen ist zur Minimierung des Kraftstoffverbrauchs die Minimallaststellung so ausgelegt, daß die Brennkraftmaschine dabei im Leerlauf noch so eben gleichmäßig läuft. Das führt dazu, daß es in Minimallaststellung nicht möglich ist, ein ausreichendes Drehmoment zu erzeugen, um das Kraftfahrzeug zu bewegen. Das kann jedoch erforderlich werden, wenn das Kraftfahrzeug aus einem Gefahrenbereich gefahren werden muß, die Lastverstellvorrichtung jedoch infolge eines Ausfalls der Steuerelektronik oder des Stellgetriebes nicht mehr durch Betätigung des Fahrpedals verstellt werden kann. Aus diesem Grunde sieht man bei den bekannten Lastverstellvorrichtungen zusätzlich zur Rückstellfeder eine Notlauffeder vor, welche dafür sorgt, daß das Stellglied bei Ausfall der Steuerelektronik oder des Stellgetriebes sich aus der Minimallaststellung zwangsläufig in eine Notlaufstellung bewegt, in der die Brennkraftmaschine ein ausreichend großes Drehmoment erzeugt, um das Kraftfahrzeug mit geringer Geschwindigkeit zu bewegen. Diese Notlaufstellung wird durch einen gegen die Kraft der Rückstellfeder verschieblichen Anschlag festgelegt, gegen den das Stellteil mittels der Notlauffeder gespannt ist und der von dem Stellteil gegen die Kraft der Rückstellfeder verschoben werden kann, wenn sich das Stellteil aus der Notlaufstellung in Richtung der Vollaststellung bewegt.Load adjustment devices of the above type (see e.g. DE-A-19524941) are generally under the Description E-gas for power adjustment of the internal combustion engine from Motor vehicles known. With them is to minimize fuel consumption the minimum load position designed so that the internal combustion engine runs smoothly when idling. That leads to it sufficient torque is not possible in the minimum load position generate to move the motor vehicle. However, this may be necessary be driven when the motor vehicle is out of a danger area must be, however, the load adjustment device due to a failure the control electronics or the actuator no longer by actuation of the accelerator pedal can be adjusted. For this reason you can see the known load adjustment devices in addition to the return spring an emergency running spring, which ensures that the actuator in the event of failure the control electronics or the actuator from the minimum load position inevitably moved into an emergency running position in which the internal combustion engine generates a sufficiently large torque to the motor vehicle to move at low speed. This emergency running position is achieved by a stop that moves against the force of the return spring fixed against which the actuator is tensioned by means of the emergency running spring and that of the actuator against the force of the return spring can be moved if the actuator is out of the emergency position moved towards the full load position.
Die für das Erreichen der Notlaufstellung erforderliche Notlauffeder erfordert - abgesehen von den Kosten - einen entsprechenden Bauraum und führt zu einer Erhöhung des Gewichtes im Vergleich zu einer Lastverstellvorrichtung ohne zwangsläufige Bewegung in eine Notlaufstellung bei einem Defekt.The emergency running spring required to reach the emergency running position is required - apart from the costs - a corresponding space and leads to an increase in weight compared to a load adjustment device without inevitable movement in an emergency running position with one Malfunction.
Der Erfindung liegt das Problem zugrunde, eine Lastverstellvorrichtung der eingangs genannten Art so zu gestalten, daß sie möglichst kompakt aufgebaut und kostengünstig herstellbar ist.The invention is based on the problem of a load adjustment device of the type mentioned in such a way that they are as compact as possible is constructed and inexpensive to manufacture.
Dieses Problem wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst, wobei die Rücklauffeder
und die Notlauffeder durch eine einzige Drehfeder gebildet sind, deren
erstes Ende mit der Stellwelle verbunden ist und deren anderes Ende
zwischen der Notlaufstellung und der Minimallaststellung mittels eines mit
dem Stellgetriebe gekoppelten Minimallastgetriebes entgegen der Kraft
der Drehfeder bewegbar ist.This problem is solved according to the invention by the features of
Durch diese Gestaltung wird die einzige Drehfeder als Rücklauffeder und als Notlauffeder doppelt genutzt und in Abhängigkeit von dem Stellwinkel der Stellwelle entweder unmittelbar über das Stellgetriebe oder das mit dem Stellgetriebe gekoppelte Minimallastgetriebe gespannt. Die Stellwelle schwenkt daher aus jeder Position automatisch in die Notlaufstellung, wenn keine Kräfte auf das Stellgetriebe wirken. Durch den Wegfall einer der Federn gestaltet sich die erfindungsgemäße Lastverstellvorrichtung besonders kompakt und ist deshalb sehr kostengünstig herstellbar. Weiterhin benötigt die erfindungsgemäße Lastverstellvorrichtung neben dem Stellgetriebe nur ein besonders einfach aufgebautes Minimallastgetriebe.With this design, the only torsion spring is used as a return spring and doubled as an emergency running spring and depending on the setting angle the control shaft either directly via the control gear or with minimum load gear coupled to the actuating gear. The control shaft therefore swings automatically from any position into the emergency running position, if no forces act on the actuator. By eliminating one of the springs, the load adjustment device according to the invention is designed particularly compact and can therefore be manufactured very inexpensively. Farther needs the load adjustment device according to the invention in addition to Actuator only a particularly simple minimal load gearbox.
Die Vorspannung der Drehfeder durch das Minimallastgetriebe könnte beispielsweise dadurch erfolgen, daß das zweite Ende der Drehfeder auf einem von dem Minimallastgetriebe verstellbaren Halteteil befestigt ist. Die Vorspannung der Drehfeder durch das Minimallastgetriebe erfordert jedoch gemäß einer vorteilhaften Weiterbildung der Erfindung einen besonders geringen baulichen Aufwand, wenn das zweite Ende der Drehfeder zwischen der Notlaufstellung und der Vollaststellung an einem Anschlag anliegt und zwischen der Notlaufstellung und der Minimallaststellung von dem Anschlag wegbewegbar ist.The torsion spring could be preloaded by the minimum load gear for example, that the second end of the torsion spring a holding part which is adjustable by the minimum load gear is attached. The torsion spring must be preloaded by the minimum load gear however, according to an advantageous development of the invention, a special one little construction when the second end of the torsion spring between the emergency running position and the full load position at one stop is present and between the emergency running position and the minimum load position is movable away from the stop.
Das Stellgetriebe läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung platzsparend in der Lastverstellvorrichtung anordnen, wenn das Stellteil ein zum Kämmen mit einem Zahnrad des Stellgetriebes ausgebildetes Zahnsegment hat.The control gear can be according to another advantageous development arrange the invention in a space-saving manner in the load adjustment device, when the actuator is for meshing with a gear of the actuator trained tooth segment.
Das Stellgetriebe hat gemäß einer anderen vorteilhaften Weiterbildung der Erfindung eine besonders geringe Bauhöhe, wenn das Stellgetriebe ein von einem Antriebsritzel angetriebenes, durchmessergroßes Zwischenzahnrad hat, welches mit einem das Stellteil verschwenkenden, durchmesserkleinen Zahnrad drehfest und koaxial verbunden ist. Diese Gestaltung hat zudem den Vorteil, daß bei einem Bruch der Drehfeder die Stellwelle von dem Stellgetriebe verschwenkt wird. Ein Defekt an einem einzigen Bauteil der erfindungsgemäßen Lastverstellvorrichtung führt deshalb nicht zu einem vollständigen Ausfall der damit gesteuerten Brennkraftmaschine.According to another advantageous development, the actuating gear has the invention a particularly low overall height when the actuator a large-diameter intermediate gear driven by a drive pinion which has a pivoting part small diameter gear is rotatably and coaxially connected. This Design also has the advantage that the breakage of the torsion spring Actuating shaft is pivoted by the actuator. A defect in one leads only component of the load adjustment device according to the invention therefore not to a complete failure of the controlled Internal combustion engine.
Das Minimallastgetriebe erfordert gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einen besonders geringen baulichen Aufwand, wenn auf dem Zwischenzahnrad ein Nocken zum Bewegen des zweiten Endes der Drehfeder angeordnet ist. Der Nocken kann hierbei auf die verschiedenste Weise ausgebildet sein. Beispielsweise kann der Nokken als einteilig mit dem Zwischenzahnrad gefertigter Zapfen gestaltet oder durch eine freidrehbare Rolle ausgebildet sein.The minimum load gear requires another advantageous one Development of the invention requires particularly little construction, if there is a cam on the idler gear for moving the second end of the torsion spring is arranged. The cam can open be trained in a variety of ways. For example, the cam designed as a one-piece with the intermediate gear pin or be formed by a freely rotatable roller.
Die Drehfeder beansprucht gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders wenig Platz, wenn sie eine Spiralfeder ist. Wenn eine besonders hohe Sicherheit gegen einen Federbruch gefordert ist, können einfach zwei gleiche, übereinander angeordnete Spiralfedern als Drehfeder eingesetzt werden. According to another advantageous development, the torsion spring is claimed the invention particularly little space if it is a coil spring. When a particularly high level of security against spring break is required , you can simply use two identical spiral springs arranged one above the other can be used as a torsion spring.
Die Drehfeder wird gemäß einer anderen vorteilhaften Weiterbildung der Erfindung zuverlässig in ihrer Position gehalten, wenn in dem das Zwischenzahnrad lagernden Gehäuse ein seitlich an der Drehfeder anliegendes Führungsteil befestigt ist.The torsion spring is according to another advantageous development Invention reliably held in position when the idler gear bearing housing a laterally against the torsion spring Guide part is attached.
Eine Begrenzung des Stellbereichs der Stellwelle erfordert gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einen besonders geringen baulichen Aufwand, wenn eine in Minimallaststellung und in Vollaststellung gegen gehäusefeste Anschläge gelangende Anschlagplatte drehfest auf der Stellwelle befestigt ist. Selbstverständlich können die Anschläge zum Einstellen eines Standgases oder einer Vollastbegrenzung verstellbar gestaltet sein.A limitation of the control range of the control shaft requires according to another advantageous development of the invention a particularly low construction effort, if one in minimum load position and in full load position stop plate against fixed stops is rotatably attached to the control shaft. Of course, the attacks for setting a idle gas or a full load limit be adjustable.
Zur weiteren Verringerung der Fertigungskosten der erfindungsgemäßen Lastverstellvorrichtung trägt es bei, wenn das Stellteil und die Anschlagplatte einteilig gefertigt sind.To further reduce the manufacturing costs of the invention Load adjustment device helps when the actuator and the stop plate are made in one piece.
Die Erfindung läßt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben.The invention allows numerous embodiments. For further clarification its basic principle is shown in the drawing and is described below.
Diese zeigt in
Figur 1- einen Schnitt durch eine erfindungsgemäße Lastverstellvorrichtung,
Figur 2- eine teilweise geschnittene Seitenansicht der Lastverstellvorrichtung
aus
Figur 1 in Vollaststellung, Figur 3- eine teilweise geschnittene Seitenansicht der Lastverstellvorrichtung
aus
Figur 1 in Notlaufstellung, Figur 4- eine teilweise geschnittene Seitenansicht der Lastverstellvorrichtung
aus
Figur 1 in Minimallaststellung.
- Figure 1
- 2 shows a section through a load adjustment device according to the invention,
- Figure 2
- 2 shows a partially sectioned side view of the load adjustment device from FIG. 1 in full load position,
- Figure 3
- 2 shows a partially sectioned side view of the load adjustment device from FIG. 1 in the emergency running position,
- Figure 4
- a partially sectioned side view of the load adjustment device of Figure 1 in minimum load position.
Die Figur 1 zeigt einen Teilbereich eines Gehäuses 1 eines Drosselklappenstutzens.
In dem Gehäuse 1 ist eine Stellwelle 2 gelagert, bei der es
sich um eine Drosselklappenwelle handeln kann, auf der eine nicht dargestellte
Drosselklappe angeordnet ist. Drehfest auf der Stellwelle 2 sitzt ein
ein Zahnsegment 3 aufweisendes Stellteil 4, welches mittels eines Stellgetriebes
5 verschwenkbar ist.Figure 1 shows a portion of a
Das Stellgetriebe 5 hat einen Stellmotor 6, der über ein Antriebsritzel 7 ein
durchmessergroßes Zwischenzahnrad 8 antreibt. Dieses Zwischenzahnrad
8 ist einteilig mit einem durchmesserkleinen Zahnrad 9 und einem radial
hervorstehenden Nocken 10 gefertigt und auf einer Achse 11 gelagert.
Das das Zahnsegment 3 aufweisende Stellteil 4 steht permanent im
Eingriff mit dem auf dem Zwischenzahnrad 8 angeordneten Zahnrad 9.
Weiterhin hat der Drosselklappenstutzen eine Drehfeder 18, welche mit
einem Ende an der Stellwelle 2 befestigt ist und mit dem anderen Ende 12
an einem gehäusefesten Anschlag 13 anliegt. Weiterhin ist auf der Stellwelle
2 eine Anschlagplatte 14 drehfest angeordnet. Das Gehäuse 1 weist
im Bereich der Anschlagplatte 14 einen Anschlag 15 auf.The actuating
Die Figuren 2 bis 4 zeigen die Funktionsweise des Drosselklappenstutzens
aus Figur 1 in einer Ansicht von oben in verschiedenen Stellungen.
Hierbei ist zu erkennen, daß die Anschlagplatte 14 einen Vollastarm 16
und einen Minimallastarm 17 aufweist. Das zweite Ende 12 der Drehfeder
18 ist abgewinkelt und überragt den Anschlag 13 bis in die Bewegungsbahn
des auf dem Zwischenzahnrad 8 angeordneten Nockens 10. Weiterhin
ist in dem Gehäuse 1 des Drosselklappenstutzens ein als Bolzen
ausgebildetes Führungsteil 19 integriert (insbesondere eingepreßt, daran
befestigt oder durch das Gehäuse 1 selbst gebildet), das die Drehfeder 18
in einem seitlichen Bereich hält. Dieses Führungsteil 19 kann bei entsprechender
Ausgestaltung der Anschlagplatte 14 auch als Anschlag für die
Minimallaststellung genutzt werden.Figures 2 to 4 show the operation of the throttle valve assembly
from Figure 1 in a view from above in different positions.
It can be seen here that the
Die Figur 2 zeigt die Lastverstellvorrichtung in Vollaststellung. Um zu der
Vollaststellung zu gelangen, wird das Zwischenzahnrad 8 mittels des in
Figur 1 dargestellten Stellmotors 6 im Uhrzeigersinn ausgelenkt. Hierdurch
verschwenkt das Zahnrad 9 des Stellgetriebes 5 das Zahnsegment
3 des Stellteils 4 gegen den Uhrzeigersinn, bis der Vollastarm 16 der Anschlagplatte
14 gegen den Anschlag 15 des Gehäuses 1 gelangt. Da das
Stellteil 4 und das eine Ende der Drehfeder 18 drehfest mit der Stellwelle
2 verbunden sind, wird die Stellwelle 2 ausgelenkt und die Drehfeder 18
gespannt. Das zweite Ende 12 der Drehfeder 18 liegt hierbei an dem Anschlag
13 an.Figure 2 shows the load adjustment device in full load. To the
To reach full load position, the
Wenn beispielsweise durch einen Defekt der in Figur 1 dargestellte Stellmotor
6 nicht mehr bestromt wird, wird die Stellwelle 2 und damit das
Stellteil 4 und das Zwischenzahnrad 8 durch die Kraft der Drehfeder 18
zurückgeschwenkt, bis der an dem Zwischenzahnrad 8 angeordnete Nokken
10 gegen das zweite Ende 12 der Drehfeder 18 gelangt. Diese Stellung
kennzeichnet die Notlaufstellung, die in Figur 3 dargestellt ist. Diese
Notlaufstellung zeichnet sich dadurch aus, daß weder der Minimallastarm
17, noch der Vollastarm 16 der Anschlagplatte 14 an dem gehäusefesten
Anschlag 15 anliegen.If, for example, due to a defect, the servomotor shown in Figure 1
6 is no longer energized, the
Die Figur 4 zeigt den Drosselklappenstutzen in der Minimallaststellung,
bei der der Minimallastarm 17 der Anschlagplatte 14 an dem gehäusefesten
Anschlag 15 anliegt. Diese Minimallaststellung wird aus der Notlaufstellung
dadurch erreicht, daß das Antriebsritzel 7 des in Figur 1 dargestellten
Stellmotors 6 das Zwischenzahnrad 8 gegen den Uhrzeigersinn
verstellt. Hierdurch wird die Stellwelle 2 über das Stellgetriebe 5 ausgelenkt.
Gleichzeitig hebt der Nocken 10 das zweite Ende 12 der Drehfeder
18 von dem Anschlag 13 ab. Der Nocken 10 und das zweite Ende 12 der
Drehfeder 18 bilden damit ein Minimallastgetriebe 20. Wenn der Stellmotor
6 nicht mehr bestromt wird, bewegt das zweite Ende 12 der Drehfeder
18 den Nocken 10 bis in die in Figur 3 dargestellte Notlaufstellung. Die
Notlaufstellung wird deshalb durch die Kraft der Drehfeder 18 zwangsläufig
erreicht, wenn der in Figur 1 dargestellte Stellmotor 6 nicht mehr bestromt
wird.FIG. 4 shows the throttle valve connector in the minimum load position,
in which the
Claims (7)
- Load adjustment device for an actuator which determines the power of an internal combustion engine and is designed, in particular, as a throttle valve and which is arranged on an actuating shaft, the actuating shaft being capable of being driven pivotably between a minimum-load position and a full-load position by means of a reversible actuating gear via an actuating part connected fixedly in terms of rotation to the said actuating shaft, with a prestressed return spring which is designed as a torsion spring and which loads the actuating shaft in the minimum-load direction, and with an emergency-running spring, by means of which the actuating shaft can be moved in the full-load direction as far as an emergency-running position, the return spring and the emergency-running spring being formed by a single torsion spring, the first end of which is connected to the actuating shaft and the other end of which can be moved, counter to the force of the torsion spring, between the emergency-running position and the minimum-load position by means of a minimum-load gear coupled to the actuating gear, characterized in that the second end (12) of the torsion spring (18) comes to bear against a stop (13) between the emergency-running position and the full-load position and can be moved away from the stop (13) between the emergency-running position and the minimum-load position, and in that a boss (10) of the actuating gear is arranged on an intermediate gearwheel (8) for the purpose of moving the second end (12) of the torsional spring (18).
- Load adjustment device according to Claim 1, characterized in that the actuating part (4) has a toothed quadrant (3) designed to mesh with a gearwheel (9) of the actuating gear (5).
- Load adjustment device according to Claim 1 or 2, characterized in that the actuating gear (5) has an intermediate gearwheel (8) of large diameter which is driven by a drive pinion (7) and which is connected fixedly in terms of rotation and coaxially to a gearwheel (9) of small diameter pivoting the actuating part (4).
- Load adjustment device according to one of Claims 1 to 3, characterized in that the torsion spring (18) is a spiral spring.
- Load adjustment device according to one of Claims 1 to 4, characterized in that a guide part (19) bearing laterally against the torsion spring is fastened in the housing (1) supporting the intermediate gearwheel (8).
- Load adjustment device according to one of Claims 1 to 5, characterized in that a stop plate (14) which in the minimum-load position and in the full-load position comes up against stops (15) fixed to the housing is fastened fixedly in terms of rotation on the actuating shaft (2).
- Load adjustment device according to one of Claims 1 to 6, characterized in that the actuating part (4) and the stop plate (14) are manufactured in one piece.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19736521 | 1997-08-22 | ||
| DE19736521A DE19736521A1 (en) | 1997-08-22 | 1997-08-22 | Throttle control unit for induction system of internal combustion engine |
| PCT/EP1998/005148 WO1999010642A1 (en) | 1997-08-22 | 1998-08-13 | Load setting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1005608A1 EP1005608A1 (en) | 2000-06-07 |
| EP1005608B1 true EP1005608B1 (en) | 2003-04-09 |
Family
ID=7839807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98946329A Expired - Lifetime EP1005608B1 (en) | 1997-08-22 | 1998-08-13 | Load setting device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6360718B1 (en) |
| EP (1) | EP1005608B1 (en) |
| KR (1) | KR20010023052A (en) |
| BR (1) | BR9811347A (en) |
| DE (2) | DE19736521A1 (en) |
| WO (1) | WO1999010642A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001029382A1 (en) * | 1999-10-15 | 2001-04-26 | Siemens Canada Limited | Electronic throttle control linkage with limp home mechanism |
| US20010035508A1 (en) * | 2000-04-17 | 2001-11-01 | Zhouxuan Xia | Return spring and adjusting mechanism for an automotive throttle body |
| DE10137026A1 (en) | 2001-07-30 | 2003-02-20 | Siemens Ag | Drive device for setting drive has intermediate gear composed of pinion and gear wheel |
| JP3750934B2 (en) * | 2002-02-25 | 2006-03-01 | 三菱電機株式会社 | Inlet throttle device |
| US6683429B2 (en) * | 2002-04-24 | 2004-01-27 | Borgwarner Inc. | Electric positional actuator |
| JP4055547B2 (en) * | 2002-10-25 | 2008-03-05 | 株式会社デンソー | Electronically controlled throttle control device |
| DE602004021641D1 (en) * | 2003-03-07 | 2009-07-30 | Denso Corp | Electronic throttle control device |
| DE10319882A1 (en) * | 2003-05-03 | 2004-11-18 | Daimlerchrysler Ag | Power controller with fail-safe device |
| DE102005062467B4 (en) * | 2005-12-27 | 2017-02-09 | Robert Bosch Gmbh | Actuator for an actuator |
| DE102008053570B4 (en) * | 2008-10-15 | 2010-07-08 | Bühler Motor GmbH | Actuator, in particular for actuating an exhaust gas recirculation valve |
| JP5357105B2 (en) * | 2010-05-19 | 2013-12-04 | 株式会社デンソー | Throttle device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5492097A (en) * | 1994-09-30 | 1996-02-20 | General Motors Corporation | Throttle body default actuation |
| DE19524941B4 (en) * | 1995-07-08 | 2006-05-18 | Siemens Ag | load adjusting |
| DE19612869A1 (en) | 1996-03-30 | 1997-10-02 | Bosch Gmbh Robert | Control device for controlling a power of an engine |
-
1997
- 1997-08-22 DE DE19736521A patent/DE19736521A1/en not_active Ceased
-
1998
- 1998-08-13 DE DE59807892T patent/DE59807892D1/en not_active Expired - Lifetime
- 1998-08-13 KR KR1020007001669A patent/KR20010023052A/en active Search and Examination
- 1998-08-13 EP EP98946329A patent/EP1005608B1/en not_active Expired - Lifetime
- 1998-08-13 WO PCT/EP1998/005148 patent/WO1999010642A1/en not_active Application Discontinuation
- 1998-08-13 US US09/486,213 patent/US6360718B1/en not_active Expired - Fee Related
- 1998-08-13 BR BR9811347-0A patent/BR9811347A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999010642A1 (en) | 1999-03-04 |
| DE19736521A1 (en) | 1999-02-25 |
| EP1005608A1 (en) | 2000-06-07 |
| KR20010023052A (en) | 2001-03-26 |
| DE59807892D1 (en) | 2003-05-15 |
| US6360718B1 (en) | 2002-03-26 |
| BR9811347A (en) | 2000-09-12 |
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