DE10118277A1 - Active tensioner for belt driving ancillary equipment on engine, includes electric motor controlling spring-biasing which acts on jockey wheel - Google Patents

Active tensioner for belt driving ancillary equipment on engine, includes electric motor controlling spring-biasing which acts on jockey wheel

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Publication number
DE10118277A1
DE10118277A1 DE2001118277 DE10118277A DE10118277A1 DE 10118277 A1 DE10118277 A1 DE 10118277A1 DE 2001118277 DE2001118277 DE 2001118277 DE 10118277 A DE10118277 A DE 10118277A DE 10118277 A1 DE10118277 A1 DE 10118277A1
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DE
Germany
Prior art keywords
internal combustion
combustion engine
spring
electric motor
pivot lever
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.)
Withdrawn
Application number
DE2001118277
Other languages
German (de)
Inventor
Rudolf Wimmer
Markus Kutscha
Friedrich Tischberger
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
Original Assignee
Bayerische Motoren Werke AG
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Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE2001118277 priority Critical patent/DE10118277A1/en
Publication of DE10118277A1 publication Critical patent/DE10118277A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • F16H7/129—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path with means for impeding reverse motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/081—Torsion springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0823—Electric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0876—Control or adjustment of actuators
    • F16H2007/0885—Control or adjustment of actuators the tension being a function of engine running condition

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

A swinging lever (8) is mounted on a pivotal axis (10). A pretensioned spring (11) acts on the lever. Spring tension is controlled by an electric motor (9) with reverse motion prevention. The motor is controlled by an operational parameter associated with a stored engine characteristic diagram.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Spannen eines Antriebs­ riemens für Nebenaggregate an einer Brennkraftmaschine, umfassend eine Spann­ rolle an einem Schwenkhebel, auf den ein in Abhängigkeit von die Riemenspannung beeinflussenden Parametern gesteuerter/geregelter, drehrichtungsumkehrbarer Elektromotor einwirkt.The invention relates to a device for tensioning a drive Belts for auxiliary units on an internal combustion engine, comprising a tensioner roll on a swivel lever, depending on the belt tension influencing parameters of controlled / regulated, reversible direction of rotation Electric motor acts.

Eine derartige Vorrichtung ist beispielsweise aus der DE 36 16 561 C2 bekannt, wobei an Einflussgrößen auf die jeweilige Riemenspannung sowohl die Längung des Antriebsriemens als auch die Betriebstemperatur der Brennkraftmaschine sowie die damit verbundenen Änderungen der Achsabstände genannt sind.Such a device is known for example from DE 36 16 561 C2, with the influencing variables on the respective belt tension both the elongation of the drive belt and the operating temperature of the internal combustion engine as well the associated changes in the center distances are named.

Von weiterem Einfluss ist die vom Antriebsriemen zu übertragende Leistung, wobei eine zu geringe Riemenspannung, insbesondere bei schnellem Hochfahren der Brennkraftmaschine, zu einem akustisch wahrnehmbaren Riemenschlupf führt. Schließlich ist die Riemenspannung selbst eine bedeutsame Einflussgröße für die Qualität des Riementriebes.The power to be transmitted by the drive belt is of further influence, whereby too low a belt tension, especially when the boot is started up quickly Internal combustion engine, leads to an acoustically perceptible belt slip. After all, the belt tension itself is a significant influencing factor for the Belt drive quality.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Spann-Vorrichtung für Antriebsriemen so weiterzubilden, dass Änderungen der Riemenspannungen betriebs- bzw. lastabhängig rasch begegnet werden kann. The invention has for its object a generic clamping device for drive belts so that changes in belt tension can be met quickly depending on the operation or load.  

Diese Aufgabe ist mit dem Patentanspruch 1 dadurch gelöst, dass ein zur Schwenkachse des Schwenkhebels koaxial angeordnetes, am Schwenkhebel vor­ gespannt angreifendes Federelement vorgesehen ist, wobei die Federvorspannung mittels des mit einer Drehrichtungs-Rücklaufhemmung ausgerüsteten Elektromotors veränderbar ist, der über in einem Brennkraftmaschinen-Kennfeld abgelegte Be­ triebs-Parameter gesteuert/geregelt ist.This object is achieved with claim 1 in that a Swivel axis of the swivel lever arranged coaxially on the swivel lever spring element engaging under tension is provided, the spring preload by means of the electric motor equipped with a direction of rotation anti-return device is changeable, the Be stored in an internal combustion engine map drive parameter is controlled / regulated.

In bevorzugter Ausgestaltung der Erfindung sind als Betriebsparameter zumindest die Drehzahlen der Brennkraftmaschine, Gradienten der Drehzahländerung der Brennkraftmaschine, die Starter-Antriebsleistung eines Starter-Generators sowie dessen abgegebene elektrische Leistung im Brennkraftmaschinen-Kennfeld ab­ gelegt.In a preferred embodiment of the invention, at least as operating parameters the speeds of the internal combustion engine, gradient of the speed change of the Internal combustion engine, the starter drive power of a starter generator as well its electrical power output in the internal combustion engine map placed.

Mit der erfindungsgemäßen Vorrichtung von vorteilhaft einfachem Aufbau kann im Betrieb der Brennkraftmaschine jeder betriebs- bzw. lastabhängig auftretenden Än­ derung einer Riemenspannung rasch entgegengewirkt werden, wodurch auch sicher Start-Stop Akustikproblemen einwandfrei entgegengewirkt ist. Weiter ist mit dieser erfindungsgemäßen Vorrichtung aber auch das Starten der Brennkraftmaschine über einen Generator ohne akustische Probleme sicher beherrschbar.With the device according to the invention of advantageously simple construction can Operation of the internal combustion engine of any operating or load-dependent changes belt tension can be counteracted quickly, which also makes it safe Start-Stop acoustic problems are counteracted perfectly. Next is with this device according to the invention but also starting the internal combustion engine Can be safely controlled via a generator without acoustic problems.

Eine vorteilhaft kleinbauende Ausführung der erfindungsgemäßen Vorrichtung ist weiter dadurch erreicht, dass das Federelement eine Schraubenfeder ist mit einem Innendurchmesser zur koaxialen Anordnung des schwenkhebelseitig an der Brenn­ kraftmaschine angeordneten Elektromotors, der über ein selbsthemmendes Ge­ triebe auf das schwenkhebelferne Federende der Schraubenfeder zur gesteuer­ ten/geregelten Änderung der Federvorspannung einwirkt.An advantageous small-sized version of the device according to the invention is further achieved in that the spring element is a coil spring with a Inner diameter for coaxial arrangement of the pivot lever on the Brenn engine arranged electric motor, which has a self-locking Ge drives to the spring end of the coil spring remote from the pivot lever for control acted / regulated change in spring preload.

Bei einer anderen Ausgestaltung der Erfindung wird vorgeschlagen, dass das Fe­ derelement eine Schraubenfeder ist mit einer am schwenkhebelfernen Federende drehfest angreifenden Stellscheibe, an deren Umfang ein flexibles Zugmittel angreift zur Antriebsverbindung mit einer Aufwickelrolle des von der Schwenkachse des Schwenkhebels querab beabstandet an der Brennkraftmaschine angeordneten Elektromotors. In another embodiment of the invention it is proposed that the Fe derelement is a coil spring with a spring end remote from the pivot lever non-rotatably acting adjusting disc, on the circumference of which a flexible traction means acts for driving connection with a take-up reel of the pivot axis of the Swivel lever arranged spaced apart on the internal combustion engine The electric motor.  

Eine vorteilhafte Verwendung der Erfindung ist dadurch erreicht, dass mittels des Antriebsriemens an Nebenaggregaten der Brennkraftmaschine eine Wasserpumpe, eine Lenkhilfepumpe sowie ein einer Kurbelwelle der Brennkraftmaschine eng be­ nachbarter, als Starter dienender Generator in Antriebsverbindung stehen derart, dass bei einem Generator-Starterbetrieb mit einem an der Spannrolle auftretenden Lasttrum des Antriebsriemens die Federvorspannung der auf den Spannrollen- Schwenkhebel einwirkenden Schraubenfeder in Abhängigkeit der geänderten Lauf­ richtung des Antriebsriemens motorisch erhöht wird.An advantageous use of the invention is achieved in that Drive belt on auxiliary units of the internal combustion engine, a water pump, a power steering pump and a crankshaft of the internal combustion engine be closely neighboring generator serving as starter are in drive connection in such a way that in generator starter operation with one occurring on the tension pulley Load side of the drive belt the spring preload on the Coil lever acting coil spring depending on the changed barrel direction of the drive belt is increased by motor.

Mit diesem Verwendungsbeispiel der Erfindung wird der weitere wesentliche Vorteil aufgezeigt, dass bei einem Wechsel von Leertrum zu Lasttrum und umgekehrt an einer Spannrolle diese unverzüglich über den elektrischen Stellmotor für die jeweils erforderliche Riemenspannung beaufschlagt werden kann und somit bei einer Ände­ rung der Trumkräfte des Antriebsriemens auftretende Akustikprobleme ebenfalls sicher vermieden sind.With this example of use of the invention, the further essential advantage demonstrated that when changing from empty run to load run and vice versa a tension roller this immediately via the electric servomotor for each required belt tension can be applied and thus in the event of a change Acoustic problems also occur when the belt forces are pulled are safely avoided.

Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen beschrieben. Es zeigtThe invention is based on exemplary embodiments shown in the drawing described. It shows

Fig. 1 eine erfindungsgemäße Vorrichtung zum Spannen eines Antriebs­ riemens für Nebenaggregate an einer Brennkraftmaschine mit einem in einer Schraubenfeder koaxial angeordneten Elektromotor, Fig. 1 shows an inventive device for tensioning a drive belt for auxiliary units of an internal combustion engine with a coaxially arranged in a coil spring electric motor,

Fig. 2 eine weitere Vorrichtung zum Spannen eines Antriebsriemens für Nebenaggregate an einer Brennkraftmaschine mit einem querab der Schraubenfeder in Antriebsposition angeordneten Elektromotor. Fig. 2 shows a further device for tensioning a drive belt for auxiliary units on an internal combustion engine with an electric motor arranged transversely to the coil spring in the drive position.

Eine nicht gezeigte Brennkraftmaschine ist an ihrer Stirnseite mit mehreren, derart angeordneten Nebenaggregaten ausgerüstet, dass diese Nebenaggregate über einen in einer einzigen Riemenebene laufenden, bei üblichem Betrieb der Brenn­ kraftmaschine mittels der kurbelwellenseitigen Riemenscheibe 1 angetriebenen An­ triebsriemen 2 angetrieben sind. Als aufgezeigtes Nebenaggregat ist der Starter- Generator mit 3 bezeichnet, wogegen eine nicht dargestellte Lenkhilfepumpe über ihre Riemenscheibe 4 und eine nicht gezeigte Wasserpumpe der Brennkraft­ maschine über ihre Riemenscheibe 5 repräsentiert ist.An internal combustion engine, not shown, is equipped on its end face with a plurality of ancillary units arranged in such a way that these ancillary units are driven by a drive belt 2, which is driven in a single belt plane, during normal operation of the internal combustion engine by means of the crankshaft-side pulley 1 . As the auxiliary unit shown, the starter generator is designated 3, whereas a power steering pump, not shown, is represented via its pulley 4 and a water pump, not shown, of the internal combustion engine is represented via its pulley 5 .

Eine Vorrichtung 6 zum Spannen des Antriebsriemens 2 für die Nebenaggregate 3, 4 und 5 umfasst eine Spannrolle 7 an einem Schwenkhebel 8, auf den ein in Ab­ hängigkeit von die Riemenspannung beeinflussenden Parametern gesteuer­ ter/geregelter, drehrichtungsumkehrbarer Elektromotor 9 einwirkt.A device 6 for tensioning the drive belt 2 for the ancillary units 3 , 4 and 5 comprises a tensioning roller 7 on a swivel lever 8 , on which a control / regulating, reversible direction of rotation electric motor 9 acts depending on the parameters influencing the belt tension.

Damit betriebs- bzw. lastabhängigen Riemenspannungs-Änderungen rasch begeg­ net werden kann, ist ein zur Schwenkachse 10 des Schwenkhebels 8 koaxial ange­ ordnetes, am Schwenkhebel 8 vorgespannt angreifendes Federelement vorge­ sehen, dessen Federvorspannung mittels des mit einer Drehrichtungs-Rück­ laufhemmung ausgerüsteten Elektromotors 9 veränderbar ist, wobei der Elektro­ motor 9 über in einem Brennkraftmaschinen-Kennfeld abgelegte Betriebs-Parameter gesteuert/geregelt ist. An Betriebs-Parametern sind im Brennkraftmaschinen-Kenn­ feld vorzugsweise die Drehzahlen der Brennkraftmaschine, insbesondere für Leer­ laufbereich und Stop-and-Go-Betrieb, Gradienten der Drehzahländerungen der Brennkraftmaschine sowie die Starter-Antriebsleistung des Starter-Generators 3 und ggf. dessen abgegebene elektrische Leistung abgelegt.Thus, operating or load-dependent belt tension changes can be begeg net rapidly, is see to the pivot axis 10 of the pivot lever pre-8 coaxially arranged, biased on the pivot lever 8 which engages the spring element whose spring bias run inhibition by means of a rotation direction rear equipped electric motor 9 changeable is, the electric motor 9 is controlled / regulated via operating parameters stored in an internal combustion engine map. On operating parameters in the internal combustion engine characteristic field are preferably the speeds of the internal combustion engine, in particular for idling range and stop-and-go operation, gradients of the speed changes of the internal combustion engine and the starter drive power of the starter generator 3 and, if appropriate, its electrical output Performance filed.

Mit der erfindungsgemäßen Vorrichtung 6 kann die Riemenspannung des Antriebs­ riemens 2 bei lastabhängiger Änderung rasch korrigiert werden, weiter in vorteilhaf­ ter Weise bei einem betriebsabhängigen Wechsel von Leertrum zu Lasttrum und umgekehrt des Antriebsriemens 2 an der Rolle 7, wenn der Generator 3 zum Star­ ten der Brennkraftmaschine dient.With the device 6 according to the invention, the belt tension of the drive belt 2 can be quickly corrected in the event of a load-dependent change, further in an advantageous manner with an operation-dependent change from empty run to load run and vice versa of the drive belt 2 on the roller 7 when the generator 3 starts Internal combustion engine is used.

Beim Betrieb des Generators 3 als Starter der Brennkraftmaschine sitzt die Spann­ rolle 7 der Spann-Vorrichtung 6 nicht mehr im Leertrum des Antriebsriemens 2. Die Spannrolle 7 befindet sich beim Generator-Starterbetrieb im Lasttrum des Antriebs­ riemens 2, so dass zur Vermeidung von Akustikproblemen und einem durch­ rutschenden Antriebsriemen 2 die Federvorspannung des auf den Spannrollen- Schwenkhebel 8 einwirkenden Federelementes 11 in Abhängigkeit der geänderten Trumkraft des Antriebsriemens 2 motorisch rasch erhöht ist, bis die Spannrolle 7 wieder in ihrer Leertrum-Position ist. When operating the generator 3 as a starter of the internal combustion engine, the tensioning roller 7 of the tensioning device 6 is no longer seated in the empty run of the drive belt 2 . The tension pulley 7 is located in the generator starter mode in the load strand of the drive belt 2 , so that to avoid acoustic problems and a slipping drive belt 2, the spring preload acting on the tension pulley pivot lever 8 spring element 11 depending on the changed strand force of the drive belt 2 is motorized quickly is increased until the tensioning roller 7 is again in its empty strand position.

Eine in vorteilhafter Weise einen kleinen Einbauraum erfordernde Spann-Vorrich­ tung 6 ist gemäß Fig. 1 dadurch erreicht, dass das Federelement 11 eine Schrau­ benfeder 12 ist mit einem Innendurchmesser zur koaxialen Anordnung des schwenkhebelseitig an der Brennkraftmaschine angeordneten Elektromotors 9, der über ein selbsthemmendes Getriebe 13 auf das schwenkhebelferne Federende der Schraubenfeder 12 zur gesteuerten/geregelten Änderung der Federvorspannung einwirkt.An advantageously requiring a small installation space Spann-Vorrich device 6 is achieved according to FIG. 1 in that the spring element 11 is a screw benfeder 12 with an inner diameter for the coaxial arrangement of the pivoted lever side of the internal combustion engine arranged electric motor 9 , which has a self-locking gear 13 acts on the spring end of the helical spring 12 remote from the pivot lever for the controlled / regulated change in the spring preload.

Die Fig. 2 zeigt eine mit der Vorrichtung 6 der Fig. 1 weitgehend identische Vor­ richtung 6', wobei identische Bauteile mit gleichen Bezugszeichen belegt sind. Die Vorrichtung 6' unterscheidet sich von der Vorrichtung 6 durch eine andere Anord­ nung des Elektromotors 9'. Wie aus Fig. 2 ersichtlich, ist das Federelement 11 eine Schraubenfeder 12 mit einer am schwenkhebelfernen Federende 14 drehfest an­ greifenden Stellscheibe 15, an deren Umfang 16 ein flexibles Zugmittel 17 angreift zur Antriebsverbindung mit einer Aufwickelrolle 18 des von der Schwenkachse 10 des Schwenkhebels 8 querab beabstandet an der Brennkraftmaschine angeordne­ ten Elektromotors 9'. Fig. 2 shows the device 6 of Fig. 1 largely identical Before direction 6 ', in which identical components are given the same reference numerals. The device 6 'differs from the device 6 by another arrangement of the electric motor 9 '. As can be seen from FIG. 2, the spring element 11 is a helical spring 12 with a non-rotatable on the spring end 14 remote from the pivoting lever on gripping adjusting disc 15 , on the circumference 16 of which a flexible traction means 17 acts for driving connection with a winding roller 18 of the pivot axis 10 of the pivot lever 8 transversely spaced on the internal combustion engine th electric motor 9 '.

Anstelle des Zugmittels 17 ist auch ein Spindel-/Schneckenantrieb vorstellbar mit Stellmutter und Gewindestange.Instead of the traction means 17 , a spindle / worm drive with an adjusting nut and a threaded rod is also conceivable.

Eine zwischen Starter-Generator 3 und der kurbelwellenseitigen Riemenscheibe 1 angeordnete Umlenkrolle ist mit 19 bezeichnet.A deflection roller arranged between the starter-generator 3 and the pulley 1 on the crankshaft side is designated by 19.

Mit der erfindungsgemäßen Vorrichtung 6, 6' ist in vorteilhafter Weise eine Abhilfe für Start-Stop-Akustikthemen erzielt und weiter das Starten der Brennkraftmaschine über den Riementrieb ohne Schwierigkeiten erreicht.With the device 6 , 6 'according to the invention, a remedy for start-stop acoustic topics is advantageously achieved and the starting of the internal combustion engine via the belt drive is achieved without difficulty.

Claims (5)

1. Vorrichtung zum Spannen eines Antriebsriemens für Nebenaggregate an einer Brennkraftmaschine
  • - umfassend eine Spannrolle (7) an einem Schwenkhebel (8), auf den
  • - ein in Abhängigkeit von die Riemenspannung beeinflussenden Para­ metern gesteuerter/geregelter, drehrichtungsumkehrbarer Elektro­ motor (9, 9') einwirkt,
dadurch gekennzeichnet,
  • - dass ein zur Schwenkachse (10) des Schwenkhebels (8) koaxial angeordnetes, am Schwenkhebel (8) vorgespannt angreifendes Fe­ derelement (11) vorgesehen ist, wobei
  • - die Federvorspannung mittels des mit einer Drehrichtungs-Rücklauf­ hemmung ausgerüsteten Elektromotors (9, 9') veränderbar ist, der
  • - über in einem Brennkraftmaschinen-Kennfeld abgelegte Betriebs- Parameter gesteuert/geregelt ist.
1. Device for tensioning a drive belt for auxiliary units on an internal combustion engine
  • - Including a tension roller ( 7 ) on a pivot lever ( 8 ) on the
  • an electric motor ( 9 , 9 ') which acts as a function of the parameters influencing the belt tension, reverses the direction of rotation,
characterized by
  • - That a to the pivot axis ( 10 ) of the pivot lever ( 8 ) coaxially arranged, on the pivot lever ( 8 ) biased attacking Fe derelement ( 11 ) is provided, wherein
  • - The spring preload can be changed by means of the electric motor ( 9 , 9 ') equipped with a direction of rotation return inhibition, the
  • - Is controlled / regulated via operating parameters stored in an internal combustion engine map.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass als Betriebs­ parameter zumindest Drehzahlen der Brennkraftmaschine, Gradienten der Drehzahländerungen der Brennkraftmaschine, Starter-Antriebsleistung eines Starter-Generators sowie dessen abgegebene elektrische Leistung im Brennkraftmaschinen-Kennfeld abgelegt sind. 2. Device according to claim 1, characterized in that as an operating parameters at least engine speeds, gradients of Engine speed changes, starter drive power Starter generator and its electrical power output in the Internal combustion engine map are stored.   3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet,
dass das Federelement (11) eine Schraubenfeder (12) ist mit einem Innendurchmesser zur koaxialen Anordnung des schwenkhebelseitig an der Brennkraftmaschine angeordneten Elektromotors (9), der
über ein selbsthemmendes Getriebe (13) auf das schwenkhebelferne Federende (14) der Schraubenfeder (12) zur gesteuerten/geregelten Änderung der Federvorspannung einwirkt.3. Device according to claim 1 and 2, characterized in that
that the spring element ( 11 ) is a helical spring ( 12 ) with an inner diameter for the coaxial arrangement of the electric motor ( 9 ) arranged on the swivel lever side of the internal combustion engine
acts via a self-locking gear ( 13 ) on the spring end ( 14 ) of the helical spring ( 12 ) remote from the pivot lever for the controlled / regulated change of the spring preload. 4. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet,
dass das Federelement (11) eine Schraubenfeder (12) ist mit einer am schwenkhebelfernen Federende (14) drehfest angreifenden Stell­ scheibe (15), an deren
Umfang (16) ein flexibles Zugmittel (17) angreift zur Antriebsverbin­ dung mit einer Aufwickelrolle (18) des von der Schwenkachse (10) des Schwenkhebels (8) querab beabstandet an der Brennkraft­ maschine angeordneten Elektromotors (9').4. Apparatus according to claim 1 and 2, characterized in
that the spring element ( 11 ) is a helical spring ( 12 ) with a non-rotatably acting adjusting disc ( 15 ) on the spring end remote from the pivot lever ( 14 ), on the latter
Scope ( 16 ) of a flexible traction means ( 17 ) engages for driving connec tion with a take-up reel ( 18 ) of the pivot axis ( 10 ) of the pivot lever ( 8 ) spaced apart on the internal combustion engine arranged electric motor ( 9 '). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
dass mittels des Antriebsriemens (2) an Nebenaggregaten der Brenn­ kraftmaschine eine Wasserpumpe (Riemenscheibe 5), eine Lenk­ hilfepumpe (Riemenscheibe 4) sowie ein einer Kurbelwelle der Brennkraftmaschine eng benachbarter, als Starter dienender Gene­ rator (3) in Antriebsverbindung stehen derart, dass
bei einem Generator-Starterbetrieb der Brennkraftmaschine mit einem an der Spannrolle (7) auftretenden Lasttrum des Antriebs­ riemens (2) die Federvorspannung der auf dem Spannrollen- Schwenkhebel (8) einwirkenden Schraubenfeder (12) in Abhängigkeit der geänderten Trumkraft des Antriebsriemens (2) motorisch erhöht ist.5. Device according to one of claims 1 to 4, characterized in
that by means of the drive belt ( 2 ) on auxiliary units of the internal combustion engine, a water pump (pulley 5 ), a steering aid pump (pulley 4 ) and a crankshaft of the internal combustion engine, which serve as a starter generator ( 3 ) are in drive connection in such a way that
in a generator starter operation of the internal combustion engine with a load strand of the drive belt ( 2 ) occurring on the tensioning roller ( 7 ), the spring preload of the helical spring ( 12 ) acting on the tensioning roller pivoting lever ( 8 ) as a function of the changed strand force of the drive belt ( 2 ) is increased.
DE2001118277 2001-04-12 2001-04-12 Active tensioner for belt driving ancillary equipment on engine, includes electric motor controlling spring-biasing which acts on jockey wheel Withdrawn DE10118277A1 (en)

Priority Applications (1)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003027537A1 (en) * 2001-09-21 2003-04-03 Ina-Schaeffler Kg Clamping device
FR2833058A1 (en) * 2001-12-01 2003-06-06 Ina Schaeffler Kg TENSIONING DEVICE FOR A DRIVE BY A DRIVE OF AN INTERNAL COMBUSTION ENGINE
DE10225268A1 (en) * 2002-06-07 2003-12-18 Ina Schaeffler Kg Tensioning device for a starter generator drive belt for a combustion engine, operates exclusively through an electronically regulated actuator
DE10315171A1 (en) * 2003-04-03 2004-10-14 Contitech Antriebssysteme Gmbh Adjustment device for activating, deactivating running, friction and coupling rollers and clamp rails has rotatable eccentric device that can be driven by actuator in form of vacuum cell
DE10312514A1 (en) * 2003-03-20 2004-12-02 Ina-Schaeffler Kg traction drive
DE10337586A1 (en) * 2003-08-16 2005-03-10 Ina Schaeffler Kg jig
WO2006053617A1 (en) * 2004-11-17 2006-05-26 Schaeffler Kg Power transmission belt drive for a starter generator
FR2885979A1 (en) 2005-05-20 2006-11-24 Renault Sas Starter`s belt tension controlling device for motor vehicle, has electric jack with electric motor and speed reducer device to drive actuating rod in translation, where rod controls lever arm to control belt tensioning idler pulley position
DE102006057481A1 (en) * 2006-12-06 2008-06-12 Audi Ag Decoupling element for a drive string of a secondary aggregate drive of a combustion engine comprises bodies which rotate about a rotary axis relative to each other and a torsion spring arranged in an annular gap
DE102007058737A1 (en) 2007-12-06 2009-06-10 Schaeffler Kg Tensioning device for traction unit e.g. endless belt, of traction unit drive, has cylinder unit connected with roller carrier and construction unit such that pre-tensioning force applied to traction unit is reduced
ITTO20120548A1 (en) * 2012-06-21 2013-12-22 Dayco Europe Srl CONTROLLED TENSIONER FOR A TRANSMISSION ACCESSORIES AND TRANSMISSION ACCESSORIES INCLUDING THIS TENSIONER
ITTO20120547A1 (en) * 2012-06-21 2013-12-22 Dayco Europe Srl TENSIONER ACTIVATED FOR A TRANSFER ACCESSORIES
US8914190B2 (en) 2009-10-21 2014-12-16 Robert Bosch Gmbh Method and device for operating a belt drive of a motor vehicle
DE102015211227A1 (en) * 2015-06-18 2016-12-22 Schaeffler Technologies AG & Co. KG Cold-startable electric motor-assisted ring tensioner
US9638293B2 (en) 2013-10-31 2017-05-02 GM Global Technology Operations LLC Variable belt tensioner for an internal combustion engine
DE102017216247A1 (en) * 2017-09-14 2019-03-14 Volkswagen Aktiengesellschaft Clamping device and traction mechanism drive with a tensioning device

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DE4006366A1 (en) * 1990-03-01 1991-09-05 Kloeckner Humboldt Deutz Ag Self-tensioning belt drive system - has belt incorporating polyamide strand and polyamide device which automatically changes belt tension with atmospheric conditions
DE4218581A1 (en) * 1992-06-05 1993-12-09 Skf Gmbh Tensioner device for drive belts - has threaded spindle to adjust tension roller, with rotary drive via bimetal helical drive spring
DE19822632A1 (en) * 1998-05-20 1999-11-25 Mannesmann Sachs Ag Device for increasing the stiffness of a tension device in continuously variable tension device gearbox

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DE3528442C1 (en) * 1985-08-08 1987-01-15 Daimler Benz Ag Jig
DE3616561C2 (en) * 1986-05-16 1990-10-18 Erwin 8000 Muenchen De Keuschnigg
DE4006366A1 (en) * 1990-03-01 1991-09-05 Kloeckner Humboldt Deutz Ag Self-tensioning belt drive system - has belt incorporating polyamide strand and polyamide device which automatically changes belt tension with atmospheric conditions
DE4218581A1 (en) * 1992-06-05 1993-12-09 Skf Gmbh Tensioner device for drive belts - has threaded spindle to adjust tension roller, with rotary drive via bimetal helical drive spring
DE19822632A1 (en) * 1998-05-20 1999-11-25 Mannesmann Sachs Ag Device for increasing the stiffness of a tension device in continuously variable tension device gearbox

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7226377B2 (en) 2001-09-21 2007-06-05 Ina-Schaeffler Kg Tensioner with adjustable biasing force of a traction member
WO2003027537A1 (en) * 2001-09-21 2003-04-03 Ina-Schaeffler Kg Clamping device
FR2833058A1 (en) * 2001-12-01 2003-06-06 Ina Schaeffler Kg TENSIONING DEVICE FOR A DRIVE BY A DRIVE OF AN INTERNAL COMBUSTION ENGINE
GB2383394A (en) * 2001-12-01 2003-06-25 Ina Schaeffler Kg Tensioning device that is fixed during engine start-up
GB2383394B (en) * 2001-12-01 2005-09-21 Ina Schaeffler Kg Tensioning device for a traction drive
DE10225268A1 (en) * 2002-06-07 2003-12-18 Ina Schaeffler Kg Tensioning device for a starter generator drive belt for a combustion engine, operates exclusively through an electronically regulated actuator
DE10312514A1 (en) * 2003-03-20 2004-12-02 Ina-Schaeffler Kg traction drive
DE10315171A1 (en) * 2003-04-03 2004-10-14 Contitech Antriebssysteme Gmbh Adjustment device for activating, deactivating running, friction and coupling rollers and clamp rails has rotatable eccentric device that can be driven by actuator in form of vacuum cell
DE10337586A1 (en) * 2003-08-16 2005-03-10 Ina Schaeffler Kg jig
WO2006053617A1 (en) * 2004-11-17 2006-05-26 Schaeffler Kg Power transmission belt drive for a starter generator
FR2885979A1 (en) 2005-05-20 2006-11-24 Renault Sas Starter`s belt tension controlling device for motor vehicle, has electric jack with electric motor and speed reducer device to drive actuating rod in translation, where rod controls lever arm to control belt tensioning idler pulley position
DE102006057481A1 (en) * 2006-12-06 2008-06-12 Audi Ag Decoupling element for a drive string of a secondary aggregate drive of a combustion engine comprises bodies which rotate about a rotary axis relative to each other and a torsion spring arranged in an annular gap
DE102006057481B4 (en) * 2006-12-06 2012-09-06 Audi Ag decoupling element
DE102007058737A1 (en) 2007-12-06 2009-06-10 Schaeffler Kg Tensioning device for traction unit e.g. endless belt, of traction unit drive, has cylinder unit connected with roller carrier and construction unit such that pre-tensioning force applied to traction unit is reduced
US8914190B2 (en) 2009-10-21 2014-12-16 Robert Bosch Gmbh Method and device for operating a belt drive of a motor vehicle
ITTO20120548A1 (en) * 2012-06-21 2013-12-22 Dayco Europe Srl CONTROLLED TENSIONER FOR A TRANSMISSION ACCESSORIES AND TRANSMISSION ACCESSORIES INCLUDING THIS TENSIONER
ITTO20120547A1 (en) * 2012-06-21 2013-12-22 Dayco Europe Srl TENSIONER ACTIVATED FOR A TRANSFER ACCESSORIES
WO2013190525A1 (en) * 2012-06-21 2013-12-27 Dayco Europe S.R.L. Controlled tensioner for an accessory drive and accessory drive comprising such tensioner
WO2013190524A1 (en) * 2012-06-21 2013-12-27 Dayco Europe S.R.L. Actuated tensioner for an accessory drive
CN104583562A (en) * 2012-06-21 2015-04-29 特高欧洲公司 Controlled tensioner for an accessory drive and accessory drive comprising such tensioner
US9631552B2 (en) 2012-06-21 2017-04-25 Dayco Europe S.R.L. Controlled tensioner for an accessory drive and accessory drive comprising said tensioner
CN104583562B (en) * 2012-06-21 2017-06-09 特高欧洲公司 Controlled tensioning apparatus for accessory drives and the accessory drives including the tensioning apparatus
US9638293B2 (en) 2013-10-31 2017-05-02 GM Global Technology Operations LLC Variable belt tensioner for an internal combustion engine
DE102015211227A1 (en) * 2015-06-18 2016-12-22 Schaeffler Technologies AG & Co. KG Cold-startable electric motor-assisted ring tensioner
DE102015211227B4 (en) * 2015-06-18 2017-01-26 Schaeffler Technologies AG & Co. KG Cold-startable electric motor-assisted ring tensioner
DE102017216247A1 (en) * 2017-09-14 2019-03-14 Volkswagen Aktiengesellschaft Clamping device and traction mechanism drive with a tensioning device

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