EP1479891B1 - Device for working a throttle valve - Google Patents

Device for working a throttle valve Download PDF

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Publication number
EP1479891B1
EP1479891B1 EP20040010806 EP04010806A EP1479891B1 EP 1479891 B1 EP1479891 B1 EP 1479891B1 EP 20040010806 EP20040010806 EP 20040010806 EP 04010806 A EP04010806 A EP 04010806A EP 1479891 B1 EP1479891 B1 EP 1479891B1
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EP
European Patent Office
Prior art keywords
throttle valve
load range
cam plate
rotation
throttle
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 - Fee Related
Application number
EP20040010806
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German (de)
French (fr)
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EP1479891A2 (en
EP1479891A3 (en
Inventor
Martin Spickermann
Berndt Röhrig
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1479891A2 publication Critical patent/EP1479891A2/en
Publication of EP1479891A3 publication Critical patent/EP1479891A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/12—External control gear, e.g. having dash-pots
    • 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
    • F02D11/02—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
    • 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
    • F02D11/04—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by mechanical control linkages
    • 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
    • F02D2009/0261—Arrangements; Control features; Details thereof having a specially shaped transmission member, e.g. a cam, specially toothed gears, with a clutch

Definitions

  • the invention relates to a device for actuating at least one throttle valve with an actuating device, such as throttle grip, at least one with this kinematically coupled, pivotable via an operating angle and a throttle in the transmission path between actuator and throttle (s) arranged translation device for generating a progressive transmission behavior at least in one lower load range.
  • an actuating device such as throttle grip
  • DE 34 03 760 A1 suggests a throttle actuator with a progressive transmission behavior, wherein actuated by means of an actuator cable with a pulley, the lateral surface distance to the pivot axis decreases with increasing opening angle of the throttle corresponds, so that with increasing opening angle of the throttle, the cable with a decreasing lever arm attacks.
  • a device for actuating a throttle valve according to the preamble of claim 1 is known from GB 1 133 721.
  • the invention is therefore based on the object to provide a device for actuating at least one throttle valve, which enables a particularly optimized in terms of friction and wear motion transmission between an actuator and a throttle valve at the same time particularly progressive transmission behavior.
  • the cam has a contour associated with the cable, which has a decreasing distance to its fulcrum, so that upon actuation from a neutral position over the lower load range in the direction of a middle and upper load range, a decreasing radius is effective.
  • a further progression can be generated.
  • the axis of rotation of the cam is arranged eccentrically with a distance to the throttle shaft axis of rotation, whereby upon rotation of the cam and entrainment of the lever element, a displacement of the contact point along the cam contour occurs.
  • the transmission ratio does not increase further when actuated beyond the predetermined opening angle.
  • a transfer function which represents the relationship between cable travel and throttle opening angle, a relatively flat course in the lower load range, a middle region with a high progression and a relatively steep curve in the upper load range.
  • a device for adjusting the clearance between the cam contour and lever element for example, designed as a stop screw, is provided.
  • FIG. 1 shows a device 100 for actuating a throttle valve of an internal combustion engine not shown here in detail by means of a throttle grip 102.
  • a throttle grip 102 is tubular section, cylindrical and is arranged rotatably about its longitudinal axis at the outer end of a link.
  • the throttle grip 102 is held in a neutral position corresponding to a non-actuated position restoring force against a stop. An actuation takes place by a rotation of the throttle grip 102 against the restoring force.
  • a pulley 104 is connected, which circumferentially receives the end of a cable 106 and is rotatable together with the throttle grip 102.
  • the return force is applied by one or more springs such as 124, which on the throttle grip, on the cam 108 and / or on the throttle Act.
  • the spring 124 is illustrated schematically and by way of example as a tension-loaded spiral spring, but it is of course also possible for a design to be in the form of a torsion spring.
  • the cable 106 is connected to the cam 108 and is located on the associated contour 110 at.
  • the cam 108 is rotated about its axis of rotation 122 in the direction of arrow a, wherein the cable 102 unwinds and due to the direction of the arrow a from R 1 to R 2 decreasing radius of the contour 110 to the axis of rotation 122 a shorter lever is effective, so that a progressive transmission behavior is achieved.
  • the cam 108 is connected to a lever element 114 in connection, which in turn is rotatably connected to the throttle valve shaft 120 and end a pin with a roller 116, preferably made of plastic.
  • the end of the lever member 114 may alternatively be without roller, with the contour 112 in sliding contact, formed.
  • the lever element 114 Upon further rotation of the cam 108 in the direction of arrow a, the lever element 114 is substantially without further relative movement between cam 108 and lever member 114 taken so that from a predetermined angle of rotation at least approximately a constant ratio of 1: 1 between cam 108 and lever member 114 is reached in the direction of larger throttle opening angle.
  • FIG. Analogous to Figure 1 a throttle grip 202 is connected by means of a cable 206 with a cam 208 which has a contour associated therewith 210 for progressive transmission of motion.
  • a cam 208 which has a contour associated therewith 210 for progressive transmission of motion.
  • the contour 212 follows only the initial direction of the arrow b, is strongly curved and the end directed against the direction of arrow b, so that a progressive conversion of the throttle opening movement is achieved not only up to a gear ratio of 1: 1, but beyond a speed-up.
  • the contour 212 is, in order to ensure proper functioning, for example, even in the event of damage or failure of a return spring such as 224, formed as a closed gate.
  • the - usually necessary but undesirable - progression generated with the contour 210 can be reduced, but the overall progressive gear ratio between the throttle grip 202 and the throttle valve can be maintained.
  • the throttle valve from idle stop to the full load stop according to an angle of about 85 °, usually be pivoted.
  • stop screws 226, 228 are provided, wherein the stop screw 226 is provided in a known manner as an idle stop for the throttle / -nwelle, while the stop screw 228 is used to adjust the stop position of the cam 208.
  • the stop position of the cam 208 is selected so that the contour 212 and the pin with roller 216, which incidentally also without roller, with the contour 212 in sliding contact, may be formed, at least approximately free of play.
  • throttle valve serves (serve) to control the (the) in the (the) cylinder inflowing gas volume, wherein an admixing of the fuel, for example by intake manifold injection takes place.
  • Figure 3 shows in a diagram 300 the relationship between the path of the cable 106, 206 and the opening angle of the throttle (s), wherein the ordinate 304, the cable path and the abscissa 306, the throttle opening angle is plotted.
  • the curved curve 302 shows the progressive overall transmission behavior, which is largely determined by the contours 110, 210 and 112, 212 and the axial offset e (FIG. 1). Starting from the neutral position, a translation of the movement into the slow, whereby a particularly good dosing is achieved by a relatively low actuation of the throttle valve (s) takes place upon actuation of the throttle grip 102, 202.
  • the gear ratio changes in the direction of a ratio of 1: 1 - in the embodiment of Figure 2 to a translation into fast - so that an actuation of the Throttle handle 102, 202 an increasingly greater operation of the throttle (s) conditionally and ultimately with fully actuated throttle grip 102, 202, the throttle valve (s) is fully open (are).
  • Recognizable is the relatively flat curve in the lower region d to about 30-35% of the cable path, a middle range e between about 30-35% and 60-70% Seilweg, in which the curve 302 has a high progression and a relative steep curve in the upper area f from approx. 60-70% rope way.

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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)
  • Harvester Elements (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

Die Erfindung betrifft eine Einrichtung zur Betätigung wenigstens einer Drosselklappe mit einer Betätigungseinrichtung, wie Gasdrehgriff, wenigstens einer mit dieser kinematisch gekoppelten, über einen Betätigungswinkel verschwenkbaren Drosselklappe sowie einer im Übertragungsweg zwischen Betätigungseinrichtung und Drosselklappe(n) angeordneten Übersetzungseinrichtung zur Erzeugung eines progressiven Übertragungsverhaltens zumindest in einem unteren Lastbereich.The invention relates to a device for actuating at least one throttle valve with an actuating device, such as throttle grip, at least one with this kinematically coupled, pivotable via an operating angle and a throttle in the transmission path between actuator and throttle (s) arranged translation device for generating a progressive transmission behavior at least in one lower load range.

Derartige Drosselklappenbetätigungen werden insbesondere bei Motorrädern verwendet. In Hinblick auf eine komfortable und sichere Bedienbarkeit ist dabei einerseits ein nicht zu großer Betätigungsweg am Gasdrehgriff gefordert, so dass im mittleren und oberen Lastbereich eine geringe Verdrehung des Gasdrehgriffes eine relativ große Drosselklappenverstellung bedingt, andererseits besteht, vor allem im unteren Lastbereich, die Forderung nach einer guten Dosierbarkeit, so dass in diesem Lastbereich zweckmäßigerweise eine große Verdrehung des Gasdrehgriffes eine relativ geringe Drosselklappenverstellung bewirkt.Such throttle actuations are used particularly in motorcycles. In view of a comfortable and safe operability on the one hand not too large actuation on the throttle grip is required so that in the middle and upper load range low rotation of the throttle grip requires a relatively large throttle adjustment, on the other hand, especially in the lower load range, the demand for a good metering, so that in this load range expediently causes a large rotation of the throttle grip a relatively small throttle adjustment.

Um den genannten Forderungen gerecht zu werden, schlägt beispielsweise die DE 34 03 760 A1 eine Drosselklappenbetätigung mit einem progressiven Übertragungsverhalten vor, wobei ein mittels einer Betätigungseinrichtung betätigter Seilzug mit einer Seilscheibe, deren Mantelflächenabstand zur Schwenkachse mit zunehmendem Öffnungswinkel der Drosselklappe abnimmt, korrespondiert, so dass mit zunehmendem Öffnungswinkel der Drosselklappe der Seilzug mit einem kleiner werdenden Hebelarm angreift. Eine Einrichtung zur Betätigung eine Drosselklappe gemäß dem Oberbegriff des Anspruchs 1 ist aus GB 1 133 721 bekannt.In order to meet the above requirements, for example, DE 34 03 760 A1 suggests a throttle actuator with a progressive transmission behavior, wherein actuated by means of an actuator cable with a pulley, the lateral surface distance to the pivot axis decreases with increasing opening angle of the throttle corresponds, so that with increasing opening angle of the throttle, the cable with a decreasing lever arm attacks. A device for actuating a throttle valve according to the preamble of claim 1 is known from GB 1 133 721.

Insbesondere bei Motorrädern darf jedoch der Weg an der Betätigungseinrichtung, wie Gasdrehgriff, nicht zu groß werden. Darüber hinaus wird durch eine stark progressive Seilscheibe der Seilzug direkt über den Anlenkpunkt der Seilscheibe stark ausgelenkt, wodurch der Seilzug in ein Führungsrohr schräg eintritt und so auch aufgrund des sich ändernden Eintrittswinkels mechanisch stark belastet ist, was einen reibungsfreien Betrieb beeinträchtigt und zu hohem Verschleiß führt.Especially with motorcycles, however, the way to the actuator, such as throttle grip, not be too large. In addition, strongly deflected by a highly progressive sheave the cable directly over the pivot point of the sheave, whereby the cable enters a guide tube obliquely and is mechanically heavily loaded due to the changing entrance angle, which impairs friction-free operation and leads to high wear ,

Einerseits ist eine sehr große Progression gefordert, andererseits existieren Randbedingungen, welche die Möglichkeit zur Erzeugung eines progressiven Übertragungsverhaltens zwischen Betätigungseinrichtung und Drosselklappe(n) begrenzen.On the one hand, a very large progression is required, on the other hand, there are boundary conditions, which limit the possibility of generating a progressive transmission behavior between actuator and throttle valve (s).

Der Erfindung liegt daher die Aufgabe zugrunde, eine Einrichtung zur Betätigung wenigstens einer Drosselklappe bereitzustellen, welche eine insbesondere hinsichtlich Reibung und Verschleiß optimierten Bewegungsübertragung zwischen einer Betätigungseinrichtung und einer Drosselklappe bei gleichzeitig besonders progressivem Übertragungsverhalten ermöglicht.The invention is therefore based on the object to provide a device for actuating at least one throttle valve, which enables a particularly optimized in terms of friction and wear motion transmission between an actuator and a throttle valve at the same time particularly progressive transmission behavior.

Die Lösung der Aufgabe erfolgt mit den Merkmalen des Anspruchs 1, wobei gemäß der Erfindung die Kurvenscheibe eine dem Seilzug zugeordnete Kontur aufweist, welche einen abnehmenden Abstand zu ihrem Drehpunkt aufweist, so dass bei einer Betätigung ausgehend von einer Leerlaufstellung über den unteren Lastbereich in Richtung eines mittleren und oberen Lastbereiches ein abnehmender Radius wirksam ist. Auf diese Weise ist zusätzlich zu der Progression, welche durch die Kurvenscheibe in Verbindung mit dem Hebelelement erzeugt wird, eine weitere Progression erzeugbar.The object is achieved by the features of claim 1, wherein according to the invention the cam has a contour associated with the cable, which has a decreasing distance to its fulcrum, so that upon actuation from a neutral position over the lower load range in the direction of a middle and upper load range, a decreasing radius is effective. In this way, in addition to the progression, which is generated by the cam in conjunction with the lever element, a further progression can be generated.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments and modifications of the invention are the subject of the dependent claims.

Zweckmäßigerweise ist die Drehachse der Kurvenscheibe exzentrisch mit einem Abstand zur Drosselwellendrehachse angeordnet, wodurch bei einer Drehung der Kurvenscheibe und Mitnahme des Hebelelementes eine Verschiebung des Kontaktpunktes entlang der Kurvenscheibenkontur erfolgt.Conveniently, the axis of rotation of the cam is arranged eccentrically with a distance to the throttle shaft axis of rotation, whereby upon rotation of the cam and entrainment of the lever element, a displacement of the contact point along the cam contour occurs.

Besonders bevorzugt ist es, wenn sich bei einer Betätigung ausgehend von der Leerlaufstellung, wobei eine Drehung der Kurvenscheibe ins Langsame übersetzt auf die Drosselklappe(n) übertragen wird, über den unteren Lastbereich in Richtung eines mittleren und oberen Lastbereiches das Übersetzungsverhältnis vergrößert und bei einem vorbestimmten Öffnungswinkel eine Übersetzung von zumindest annähernd 1:1 erreicht ist.It is particularly preferred if, during an actuation starting from the neutral position, wherein a rotation of the cam slower translated to the throttle valve (s) is transmitted over the lower load range in the direction of a middle and upper load range increases the gear ratio and at a predetermined opening angle, a translation of at least approximately 1: 1 is reached.

Gemäß eines sehr zweckmäßigen Ausführungsbeispiels erhöht sich bei einer Betätigung über den vorbestimmten Öffnungswinkel hinaus das Übersetzungsverhältnis nicht weiter.According to a very expedient embodiment, the transmission ratio does not increase further when actuated beyond the predetermined opening angle.

Als besonders vorteilhaft wird es jedoch angesehen, wenn sich bei einer Betätigung über den vorbestimmten Öffnungswinkel hinaus das Übersetzungsverhältnis weiter erhöht, so dass eine Übersetzung ins Schnelle erreicht wird.However, it is considered to be particularly advantageous if, when actuated beyond the predetermined opening angle, the transmission ratio further increases, so that a speed-up ratio is achieved.

Einer besonders bevorzugten Ausgestaltung zufolge weist eine Übertragungsfunktion, welche den Zusammenhang zwischen Seilzugweg und Drosselklappenöffnungswinkel darstellt, einen relativ flachen Verlauf im unteren Lastbereich, einen mittleren Bereich mit einer hohen Progression sowie einen relativ steilen Verlauf im oberen Lastbereich auf.According to a particularly preferred embodiment, a transfer function, which represents the relationship between cable travel and throttle opening angle, a relatively flat course in the lower load range, a middle region with a high progression and a relatively steep curve in the upper load range.

Zweckmäßigerweise ist eine Einrichtung zur Einstellung des Spiels zwischen Kurvenscheibenkontur und Hebelelement, beispielsweise als Anschlagschraube ausgebildet, vorgesehen.Appropriately, a device for adjusting the clearance between the cam contour and lever element, for example, designed as a stop screw, is provided.

Nachfolgend werden unter Bezugnahme auf Figuren besonders zu bevorzugende Ausführungsbeispiele näher erläutert, dabei zeigen schematisch und beispielhaft

Figur 1
eine Einrichtung zur Betätigung wenigstens einer Drosselklappe mit einer im kinematischen Übertragungsweg zwischen Gasdrehgriff und Drosselklappe angeordneten Übersetzungseinrichtung mit Kurvenscheibe und Hebeleinrichtung,
Figur 2
eine Einrichtung zur Betätigung wenigstens einer Drosselklappe mit einer im kinematischen Übertragungsweg zwischen Gasdrehgriff und Drosselklappe angeordnete Übersetzungseinrichtung mit Kurvenscheibe und Hebeleinrichtung und
Figur 3
ein Diagramm.
Hereinafter, with reference to figures particularly preferred embodiments are explained in more detail, showing schematically and by way of example
FIG. 1
a device for actuating at least one throttle valve with a arranged in the kinematic transmission path between throttle grip and throttle Translation device with cam and lever device,
FIG. 2
a device for actuating at least one throttle valve with a kinematic transmission path between the throttle grip and throttle arranged translation device with cam and lever device and
FIG. 3
a diagram.

In Figur 1 ist eine Einrichtung 100 zur Betätigung einer hier nicht näher gezeigten Drosselklappe einer Brennkraftmaschine mittels eines Gasdrehgriffes 102 dargestellt. Derartige Einrichtungen finden sich üblicherweise bei Motorrädern, wobei der Gasdrehgriff 102 rohrabschnittsförmig, zylindrisch ausgebildet ist und um seine Längsachse drehbar am äußeren Ende eines Lenkers angeordnet ist. Der Gasdrehgriff 102 ist in einer Leerlaufstellung entsprechend einer nicht betätigten Stellung rückstellkraftbeaufschlagt gegen einen Anschlag gehalten. Eine Betätigung erfolgt durch eine Verdrehung des Gasdrehgriffes 102 entgegen der Rückstellkraft.1 shows a device 100 for actuating a throttle valve of an internal combustion engine not shown here in detail by means of a throttle grip 102. Such devices are commonly found in motorcycles, wherein the throttle grip 102 is tubular section, cylindrical and is arranged rotatably about its longitudinal axis at the outer end of a link. The throttle grip 102 is held in a neutral position corresponding to a non-actuated position restoring force against a stop. An actuation takes place by a rotation of the throttle grip 102 against the restoring force.

Mit dem Gasdrehgriff 102 ist koaxial eine Seilscheibe 104 verbunden, welche umfangsseitig das Ende eines Seilzuges 106 aufnimmt und gemeinsam mit dem Gasdrehgriff 102 verdrehbar ist. Ausgehend von der Leerlaufstellung wird der Seilzug 106 bei einer Drehung der Seilscheibe 104 auf der Seilscheibe 104 entgegen der Rückstellkraft aufgewickelt und somit verkürzt, so dass die Drosselklappe, mit welcher der Seilzug 106 zumindest mittelbar verbunden ist, in Öffnungsrichtung verschwenkt wird. Die Rückstellkraft wird von einer oder mehrer Federn wie 124 aufgebracht, welche auf den Gasdrehgriff, auf die Kurvenscheibe 108 und/oder auf die Drosselklappe wirken. Die Feder 124 ist vorliegend schematisch und beispielhaft als zugbelastete Spiralfeder dargestellt, jedoch kann selbstverständlich auch eine Ausgestaltung als Drehfeder erfolgen.With the throttle grip 102 coaxially a pulley 104 is connected, which circumferentially receives the end of a cable 106 and is rotatable together with the throttle grip 102. Starting from the neutral position of the cable 106 is wound on a rotation of the pulley 104 on the pulley 104 against the restoring force and thus shortened, so that the throttle valve, with which the cable 106 is at least indirectly connected, is pivoted in the opening direction. The return force is applied by one or more springs such as 124, which on the throttle grip, on the cam 108 and / or on the throttle Act. In the present case, the spring 124 is illustrated schematically and by way of example as a tension-loaded spiral spring, but it is of course also possible for a design to be in the form of a torsion spring.

Gemäß dem in der Figur 1 dargestellten Ausführungsbeispiel ist der Seilzug 106 mit der Kurvenscheibe 108 verbunden und liegt an der ihm zugeordneten Kontur 110 an. Bei einer Betätigung des Gasdrehgriffes 102 wird die Kurvenscheibe 108 um ihre Drehachse 122 in Pfeilrichtung a verdreht, wobei sich der Seilzug 102 abwickelt und aufgrund des entgegen der Pfeilrichtung a von R1 nach R2 abnehmenden Radius der Kontur 110 zur Drehachse 122 ein kürzer werdender Hebel wirksam ist, so dass ein progressives Übertragungsverhalten erreicht wird.According to the embodiment shown in Figure 1, the cable 106 is connected to the cam 108 and is located on the associated contour 110 at. Upon actuation of the throttle grip 102, the cam 108 is rotated about its axis of rotation 122 in the direction of arrow a, wherein the cable 102 unwinds and due to the direction of the arrow a from R 1 to R 2 decreasing radius of the contour 110 to the axis of rotation 122 a shorter lever is effective, so that a progressive transmission behavior is achieved.

Zur Bewegungsübertragung auf die hier nicht näher dargestellte Drosselklappe steht die Kurvenscheibe 108 mit einem Hebelelement 114 in Verbindung, welches seinerseits drehfest mit der Drosselklappenwelle 120 verbunden ist und endseitig einen Zapfen mit einer Rolle 116 vorzugsweise aus Kunststoff aufweist. Das Ende des Hebelelementes 114 kann alternativ auch ohne Rolle, mit der Kontur 112 in Gleitkontakt stehend, ausgebildet sein.For transmission of motion to the throttle valve, not shown here, the cam 108 is connected to a lever element 114 in connection, which in turn is rotatably connected to the throttle valve shaft 120 and end a pin with a roller 116, preferably made of plastic. The end of the lever member 114 may alternatively be without roller, with the contour 112 in sliding contact, formed.

Aufgrund des Versatzes e zwischen Drosselklappenwelle 120 und Drehachse der Kurvenscheibe 122 findet bei einer Betätigung eine Relativbewegung zwischen Kurvenscheibe 108 und Hebelelement 114 statt, wobei die Rolle 116 des Hebelelementes 114 in Pfeilrichtung b an der ihm zugeordneten Kontur 112 der Kurvenscheibe 108 abrollt und sich so der wirksame Radius R3 vergrößert. Entsprechend der Gestaltung der Kontur 112 erfolgt bei einer Betätigung eine progressiv zunehmende Verschwenkung des Hebelelementes 114 in Pfeilrichtung c, bis die Rolle 116 am Anschlag 118 anliegt. Bei einer weitere Drehung der Kurvenscheibe 108 in Pfeilrichtung a wird das Hebelelementes 114 im wesentlichen ohne weitere Relativbewegung zwischen Kurvenscheibe 108 und Hebelelement 114 mitgenommen, so dass ab einem vorbestimmten Drehwinkel zumindest annähern eine konstante Übersetzung von 1:1 zwischen Kurvenscheibe 108 und Hebelelement 114 in Richtung größerer Drosselklappenöffnungswinkel erreicht ist.Due to the offset e between the throttle shaft 120 and axis of rotation of the cam 122 takes place upon actuation, a relative movement between cam 108 and lever member 114 instead, the roller 116 of the lever member 114 rolls in the direction of arrow b at its associated contour 112 of the cam 108 and so the effective radius R 3 increased. In accordance with the design of the contour 112, a progressively increasing pivoting of the lever element 114 in the direction of the arrow c takes place upon actuation, until the roller 116 bears against the stop 118. Upon further rotation of the cam 108 in the direction of arrow a, the lever element 114 is substantially without further relative movement between cam 108 and lever member 114 taken so that from a predetermined angle of rotation at least approximately a constant ratio of 1: 1 between cam 108 and lever member 114 is reached in the direction of larger throttle opening angle.

Ein weiteres Ausführungsbeispiel der erfindungsgemäßen Übersetzungseinrichtung 200 ist mit Figur 2 gezeigt. Analog zur Figur 1 ist ein Gasdrehgriff 202 mittels eines Seilzuges 206 mit einer Kurvenscheibe 208 verbunden, welche eine diesem zugeordnete Kontur 210 zur progressiven Bewegungsübertragung aufweist. Gegenüber dem in Figur 1 dargestellten Ausführungsbeispiel vergrößert sich jedoch der Abstand der Kontur 212 der Kurvenscheibe 208 zur Drehachse der Kurvenscheibe 222 bei einer Betätigung in Richtung größerer Drosselklappenöffnungswinkel wesentlich stärker. Die Kontur 212 folgt dabei nur anfänglich der Pfeilrichtung b, ist stark gekrümmt und endseitig entgegen der Pfeilrichtung b gerichtet, so dass eine progressive Wandlung der Drosselklappenöffnungsbewegung nicht nur bis zu einem Übersetzungsverhältnis von 1:1, sondern darüber hinaus eine Übersetzung ins Schnelle erreicht wird. Die Kontur 212 ist, um eine einwandfreie Funktionsfähigkeit, beispielsweise auch bei einem Schaden oder Fehler einer Rückstellfeder wie 224, sicher zu stellen, als geschlossene Kulisse ausgebildet.Another embodiment of the inventive translation device 200 is shown in FIG. Analogous to Figure 1, a throttle grip 202 is connected by means of a cable 206 with a cam 208 which has a contour associated therewith 210 for progressive transmission of motion. Compared to the embodiment shown in Figure 1, however, increases the distance of the contour 212 of the cam 208 to the axis of rotation of the cam 222 at an operation in the direction of larger throttle opening angle much more. The contour 212 follows only the initial direction of the arrow b, is strongly curved and the end directed against the direction of arrow b, so that a progressive conversion of the throttle opening movement is achieved not only up to a gear ratio of 1: 1, but beyond a speed-up. The contour 212 is, in order to ensure proper functioning, for example, even in the event of damage or failure of a return spring such as 224, formed as a closed gate.

Aufgrund der mit der Kontur 212 erreichten besonders hohen Progression kann die - in der Regel notwendige, aber unerwünschte - Progression, welche mit der Kontur 210 erzeugt wird, verringert, das progressive Gesamtübersetzungsverhältnis zwischen Gasdrehgriff 202 und Drosselklappe jedoch beibehalten werden. Bei einem Betätigungsweg/winkel am Gasdrehgriff 202 von ca. 75° kann die Drosselklappe vom Leerlaufanschlag bis zum Volllastanschlag, entsprechend üblicherweise einem Winkel von ca. 85°, verschwenkt werden.Due to the particularly high progression achieved with the contour 212, the - usually necessary but undesirable - progression generated with the contour 210 can be reduced, but the overall progressive gear ratio between the throttle grip 202 and the throttle valve can be maintained. At a Betätigungsweg / angle on the throttle grip 202 of about 75 °, the throttle valve from idle stop to the full load stop, according to an angle of about 85 °, usually be pivoted.

Ferner sind zwei Anschlagschrauben 226, 228 vorgesehen, wobei die Anschlagschraube 226 in bekannter Weise als Leerlaufanschlag für die Drosselklappe/-nwelle vorgesehen ist, während die Anschlagschraube 228 zur Einstellung der Anschlagposition der Kurvenscheibe 208 dient. Mittels der Anschlagschraube 228 wird die Anschlagposition der Kurvenscheibe 208 so gewählt, dass die Kontur 212 und der Zapfen mit Rolle 216, welcher im Übrigen auch ohne Rolle, mit der Kontur 212 in Gleitkontakt stehend, ausgebildet sein kann, zumindest annähernd spielfrei zusammenwirken.Furthermore, two stop screws 226, 228 are provided, wherein the stop screw 226 is provided in a known manner as an idle stop for the throttle / -nwelle, while the stop screw 228 is used to adjust the stop position of the cam 208. By means of the stop screw 228, the stop position of the cam 208 is selected so that the contour 212 and the pin with roller 216, which incidentally also without roller, with the contour 212 in sliding contact, may be formed, at least approximately free of play.

Auch wenn vorliegend nur die Betätigung einer Drosselklappe dargestellt und beschrieben ist, sind sinngemäß selbstverständlich auch Anordnungen mit mehreren Drosselklappen beispielsweise für mehrere Zylinder einer Brennkraftmaschine umfasst. Die Drosselklappe(n) dient(dienen) zur Regelung des(der) in den(die) Zylinder einströmenden Gasvolumens, wobei eine Zumischung des Kraftstoffes beispielsweise durch Saugrohreinspritzung erfolgt.Although in the present case only the operation of a throttle valve is shown and described, analogously, arrangements with a plurality of throttle valves, for example for a plurality of cylinders of an internal combustion engine, are of course also included. The throttle valve (s) serves (serve) to control the (the) in the (the) cylinder inflowing gas volume, wherein an admixing of the fuel, for example by intake manifold injection takes place.

Figur 3 zeigt in einem Diagramm 300 den Zusammenhang zwischen dem Weg des Seilzuges 106, 206 und dem Öffnungswinkel der Drosselklappe(n), wobei auf der Ordinate 304 der Seilweg und auf der Abszisse 306 der Drosselklappenöffnungswinkel aufgetragen ist. Die gekrümmte Kurve 302 zeigt das progressive Gesamtübertragungsverhalten, welches maßgeblich durch die Konturen 110, 210 und 112, 212 sowie den Achsversatz e (Fig. 1) bestimmt wird. Ausgehend von der Leerlaufstellung erfolgt eine Übersetzung der Bewegung ins Langsame, wobei eine besonders gute Dosierbarkeit erreicht wird, indem bei einer Betätigung des Gasdrehgriffes 102, 202 eine relativ geringe Betätigung der Drosselklappe(n) erfolgt. Bei weiterer Betätigung ändert sich das Übersetzungsverhältnis in Richtung einer Übersetzung von 1:1 - beim Ausführungsbeispiel nach Figur 2 bis hin zu einer Übersetzung ins Schnelle - so dass eine Betätigung des Gasdrehgriffes 102, 202 eine zunehmend größere Betätigung der Drosselklappe(n) bedingt und letztlich bei vollständig betätigtem Gasdrehgriff 102, 202 die Drosselklappe(n) vollständig geöffnet ist(sind). Erkennbar ist der relativ flache Kurvenverlauf im unteren Bereich d bis ca. 30-35% des Seilweges, ein mittlerer Bereich e zwischen ca. 30-35% und 60-70% Seilweg, in welchem die Kurve 302 eine hohe Progression aufweist sowie eine relativ steiler Kurvenverlauf im oberen Bereich f ab ca. 60-70% Seilweg.Figure 3 shows in a diagram 300 the relationship between the path of the cable 106, 206 and the opening angle of the throttle (s), wherein the ordinate 304, the cable path and the abscissa 306, the throttle opening angle is plotted. The curved curve 302 shows the progressive overall transmission behavior, which is largely determined by the contours 110, 210 and 112, 212 and the axial offset e (FIG. 1). Starting from the neutral position, a translation of the movement into the slow, whereby a particularly good dosing is achieved by a relatively low actuation of the throttle valve (s) takes place upon actuation of the throttle grip 102, 202. Upon further actuation, the gear ratio changes in the direction of a ratio of 1: 1 - in the embodiment of Figure 2 to a translation into fast - so that an actuation of the Throttle handle 102, 202 an increasingly greater operation of the throttle (s) conditionally and ultimately with fully actuated throttle grip 102, 202, the throttle valve (s) is fully open (are). Recognizable is the relatively flat curve in the lower region d to about 30-35% of the cable path, a middle range e between about 30-35% and 60-70% Seilweg, in which the curve 302 has a high progression and a relative steep curve in the upper area f from approx. 60-70% rope way.

Claims (7)

  1. A device for actuating at least one throttle valve, comprising
    - an actuating device (102) such as a turning accelerator handle,
    - at least one throttle valve mechanically coupled thereto and pivotable by an actuating angle member and
    - a transmission device (100, 200) disposed in the transmission path between the actuating device (102) and the throttle valve or valves for generating a progressive transmission response at least in a lower load range,
    - wherein the transmission device (100, 200) comprises a lever element (114, 214) connected to the throttle valve and cooperating with a cam plate (108, 208) actuated by the actuating device,
    - the cam plate (108, 208) is connected to the actuating device (102, 202) by a Bowden cable (106, 206) and
    - the cam plate (108, 208) has a first contour (112, 212) connected in operation to the lever element (114, 214) and having an increasing distance from its axis (122, 222) of rotation, so that an increasing radius (R3) is operative in the event of actuation starting from an idling position and in the direction, via the lower load range, towards a medium and upper load range,
    characterised in that
    - the cam plate has a second contour (110, 210) associated with the Bowden cable (106, 206) and having a decreasing distance from its axis (122, 222) of rotation, so that a decreasing radius (R1, R2) is operative in the event of actuation starting from an idling position in the direction, via the low load range, towards a middle and upper load range.
  2. A device according to claim 1, characterised in that the axis (122, 222) of rotation of the cam plate (108, 208) is eccentrically disposed at a distance (e) from the axis of rotation (120) of the throttle valve.
  3. A device according to any of the preceding claims, characterised in that in the event of actuation starting from an idling position, wherein a rotation of the cam plate (108, 208) is geared down when transmitted to the throttle valve, the transmission ratio increases over the low load range in the direction towards a middle and upper load range and at a set opening angle reaches a gear ratio of at least approximately 1:1.
  4. A device according to claim 3, characterised in that in the event of actuation beyond the said opening angle the transmission ratio does not increase further.
  5. A device according to claim 3, characterised in that in the event of actuation above the said opening angle the transmission ratio continues to increase, resulting in gearing up.
  6. A device according to any of claims 3 to 5, characterised by a transmission function (302) having a relatively flat curve in the low load region (d), a middle region (e) with high progression and a relatively steep curve in the upper load region (f).
  7. A device according to any of the preceding claims, characterised by a device (228) for adapting the clearance between the cam plate contour (112, 212) and the lever element (114, 214).
EP20040010806 2003-05-22 2004-05-04 Device for working a throttle valve Expired - Fee Related EP1479891B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323121 2003-05-22
DE2003123121 DE10323121A1 (en) 2003-05-22 2003-05-22 Device for actuating at least one throttle valve

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EP1479891A2 EP1479891A2 (en) 2004-11-24
EP1479891A3 EP1479891A3 (en) 2004-12-22
EP1479891B1 true EP1479891B1 (en) 2006-07-19

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9897014B2 (en) * 2008-10-15 2018-02-20 Motion Pro, Inc. Variable rate push/pull twist throttle
JP6442425B2 (en) * 2016-03-08 2018-12-19 豊田鉄工株式会社 Throttle valve opening / closing control device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1133721A (en) * 1965-01-29 1968-11-13 Smiths Industries Ltd Improvements in or relating to variable ratio transmission devices for incorporation in throttle linkages
JPS57198329A (en) * 1981-05-30 1982-12-04 Nippon Denso Co Ltd Opening and closing device of intake air throttle valve for internal combustion engine
DE3329791A1 (en) * 1983-08-18 1985-02-28 Vdo Adolf Schindling Ag, 6000 Frankfurt Motor-driven control element for the swivel axis of a throttle valve
US5239891A (en) * 1991-10-07 1993-08-31 Ford Motor Company Cam follower variable ratio throttle linkage
US5165298A (en) * 1991-10-08 1992-11-24 General Motors Corporation Throttle cable linkage

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DE10323121A1 (en) 2004-12-16
DE502004000975D1 (en) 2006-08-31
EP1479891A2 (en) 2004-11-24
EP1479891A3 (en) 2004-12-22

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