DE19520508A1 - Control belt or timing drive for IC engine - Google Patents

Control belt or timing drive for IC engine

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Publication number
DE19520508A1
DE19520508A1 DE19520508A DE19520508A DE19520508A1 DE 19520508 A1 DE19520508 A1 DE 19520508A1 DE 19520508 A DE19520508 A DE 19520508A DE 19520508 A DE19520508 A DE 19520508A DE 19520508 A1 DE19520508 A1 DE 19520508A1
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DE
Germany
Prior art keywords
belt
drive according
wheel
belt drive
driving
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Withdrawn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
DE19520508A
Other languages
German (de)
Inventor
Karl Dr Huber
Michael Dipl Ing Jung
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.)
Audi AG
Original Assignee
Audi AG
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Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Priority to DE19520508A priority Critical patent/DE19520508A1/en
Publication of DE19520508A1 publication Critical patent/DE19520508A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22—Compensation of inertia forces
    • F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
    • F16F15/264—Rotating balancer shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • 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
    • F16H57/00—General details of gearing
    • F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
    • 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
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
    • F16H7/023—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/001—Gearings with eccentric mounted gears, e.g. for cyclically varying ratio
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/003—Gearings comprising pulleys or toothed members of non-circular shape, e.g. elliptical gears

Abstract

The control belt or timing drive (10) comprises a drive wheel (20), at least one driven wheel (22), and a looped drive belt. There are elements capable of superimposing an extra unevenness to the drive. Pref. at least of the wheels is unround or eccentrically mounted. At least one wheel may have depressions distributed over its periphery, with the number of the depressions corresponding to the main order of the rotation. With a transmission ratio 2:1 the driven wheel may have four peripherally distributed depressions.

Description

Die Erfindung betrifft einen Umschlingungstrieb, insbesondere einen Steue­ rungsantrieb für eine Brennkraftmaschine, gemäß dem Oberbegriff des Pa­ tentanspruches 1.The invention relates to a belt drive, in particular a control drive for an internal combustion engine, according to the preamble of Pa claim 1.

Insbesondere Steuerungsantriebe von Brennkraftmaschinen mit einem Kur­ belwellen-Antriebsrad, zumindest einem Nockenwellen-Abtriebsrad und einer Kette oder Zahnriemen, aber auch andere an Brennkraftmaschinen vorhandene Aggregateantriebe, sind aufgrund von Drehmomentschwankun­ gen bzw. Winkelgeschwindigkeitsänderungen Schwingungsanregungen unterworfen, die in Resonanzbereichen zu hörbaren Geräuschen führen können. Damit verbunden sind erhöhte Reibungskräfte, die die Lebensdauer des Umschlingungstriebes sowie dessen Wirkungsgrad beeinträchtigen können.In particular, control drives of internal combustion engines with a cure belwellen-drive wheel, at least one camshaft output gear and a chain or toothed belt, but also others on internal combustion engines existing unit drives are due to torque fluctuations conditions or angular velocity changes subjected to audible noises in resonance areas can. Associated with this are increased frictional forces that increase the lifespan of the belt drive and its efficiency can.

Bekannt ist es, diesen Drehschwingungen durch den Einsatz eines Schwin­ gungsdämpfers entgegenzuwirken (z. B. DE 37 39 336 C2), jedoch bedingt diese Maßnahme einen nicht unbeträchtlichen zusätzlichen Aufwand; ferner ist der erforderliche Bauraum dafür oft nicht vorhanden. Durch die DE 39 20 528 C1 wird vorgeschlagen, den von der Nockenwelle ausgehenden Wech­ selmomenten aufgrund der Ventilfederkräfte durch eine hydraulische Bremseinrichtung entgegenzuwirken.It is known to these torsional vibrations through the use of a Schwin counteracting damping (e.g. DE 37 39 336 C2), but conditionally this measure involves a not inconsiderable additional effort; further the space required for this is often not available. Through DE 39 20 528 C1 it is proposed to change from the camshaft torque due to the valve spring forces by a hydraulic Counteract the braking device.

Aufgabe der Erfindung ist es, den in gattungsgemäßen Umschlingungstrie­ ben auftretenden Drehschwingungen mit einfachen Mitteln entgegenzuwir­ ken, insbesondere hörbare Schwingungsgeräusche zu eliminieren.The object of the invention is that in the generic wrap counteracting torsional vibrations with simple means ken, especially to eliminate audible vibration noises.

Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Weitere wesentliche Merkmale der Erfin­ dung sind den weiteren Patentansprüchen entnehmbar.This object is achieved with the characterizing features of claim 1 solved. Other essential features of the Erfin can be found in the other claims.

Entgegen den bekannten Maßnahmen, die auf eine Vernichtung der Schwingungsenergie abzielen, wird eine Verstimmung des Umschlingungs­ triebes mit einer zusätzlichen Umgleichförmigkeit vorgeschlagen, mittels der der kritische Resonanz- bzw. Drehzahlbereich in einen nicht störenden ggf. nicht auftretenden Bereich verschoben wird.Contrary to the known measures aimed at the destruction of the Aiming at vibration energy will cause a detuning of the wrap  Proposed with an additional uniformity, by means of the critical resonance or speed range in a non-disturbing non-occurring area is moved.

Die die Ungleichförmigkeit erzeugenden Mittel können bevorzugt ein "unrundes" An- oder Abtriebsrad, unterschiedliche Elastizitäten oder Dicken in Längsrichtung des Umschlingungsmittels oder ein oder mehrere federnd vorgespannte Reaktionselemente sein, die in einer definierten Frequenz und Phasenlage betrieben die gegebene Ungleichförmigkeit des Umschlingungs­ triebes überlagern und damit eine Resonanzverschiebung bewirken.The non-uniformity generators may preferably be one "Out of round" drive or driven wheel, different elasticities or thicknesses in the longitudinal direction of the belt or one or more resilient biased reaction elements that are in a defined frequency and Phase position operated the given nonuniformity of the loop overlay drive and thus cause a resonance shift.

Mehrere Ausführungsbeispiele der Erfindung mit wesentlichen weiteren Merkmalen sind der nachfolgenden Beschreibung entnehmbar. Die schema­ tische Zeichnung zeigt inSeveral embodiments of the invention with other essentials Features can be found in the following description. The scheme table drawing shows in

Fig. 1 einen Umschlingungstrieb als Steuerungsantrieb einer Hubkolben- Brennkraftmaschine; Figure 1 is a belt drive as a control drive of a reciprocating internal combustion engine.

Fig. 2 eine Grafik der Schwingungsamplituden in Grad Nockenwelle des Umschlingungstriebes über der Drehzahl der Kurbelwelle; Figure 2 is a graph of the vibration amplitudes in degrees camshaft of the belt drive over the speed of the crankshaft.

Fig. 3 ein mit Vertiefungen versehenes Nockenwellen-Abtriebsrad des Um­ schlingungstriebes nach Fig. 1; Fig. 3 is a recessed camshaft output gear of the looping drive according to Fig. 1;

Fig. 4 abschnittsweise einen in Umfangsrichtung unterschiedliche Elastizitä­ ten aufweisenden Zahnriemens eines Umschlingungstriebes; und Fig. 4 is a partially different in the circumferential direction Elastizitä th toothed belt having a belt drive; and

Fig. 5 einen teilweisen Querschnitt durch einen Zylinderkopf und eine Nok­ kenwelle einer Brennkraftmaschine mit einem auf die Nockenwelle wir­ kenden Reaktionselement. Fig. 5 is a partial cross section through a cylinder head and a Nok kenwelle an internal combustion engine with a we on the camshaft we kenden reaction element.

Die Fig. 1 zeigt schematisch einen Umschlingungstrieb bzw. Steuerungsan­ trieb 10 einer nicht dargestellten Vierzylinder-Reihen-Hubkolben-Brenn­ kraftmaschine, mit einem endlosen Zahnriemen 12, der über ein auf der Kurbelwelle 14 der Brennkraftmaschine angeordnetes Antriebsrad 16 das Abtriebsrad 18 einer Wasserpumpe und die Abtriebsräder 20, 22 zweier oben liegender Nockenwellen 24, 26 antriebt. Ein Riemenspanner 28 mit einem Spannrad 29 schließlich sorgt für die erforderliche Riemenvorspan­ nung des im Uhrzeigersinn umlaufenden Umschlingungstriebes. Fig. 1 shows schematically a belt drive or control drive 10 of a four-cylinder in-line reciprocating internal combustion engine, not shown, with an endless toothed belt 12 , the driven wheel 16 arranged on the crankshaft 14 of the internal combustion engine 16, the output gear 18 of a water pump and Output wheels 20 , 22 drives two overhead camshafts 24 , 26 . A belt tensioner 28 with a tensioning wheel 29 finally ensures the required belt pretension of the clockwise rotating belt drive.

Die Fig. 2 zeigt grafisch die dynamische Ungleichförmigkeit bzw. die We­ chselschwingungen des Steuerungsantriebes 10 in Grad Nockenwelle über der Drehzahl n der Kurbelwelle. Dabei gibt die ausgezogene Kurve die ge­ messene Gesamtamplitude, die gestrichelte Linie die dominierende Schwin­ gung zweiter Ordnung und die gepunktete Linie die weniger relevante Schwingung vierter Ordnung wieder. Wie ersichtlich ist, ergibt sich bei der vorgenannten Vierzylinder-Brennkraftmaschine ein kritischer Resonanzbe­ reich bei einer Drehzahl n von ca. 2500 min-1, bei dem die Schwin­ gungsamplitude ca. 1° erreicht. Die Schwingungsanregung ergibt sich dabei aus dem Gas- und Massenkräften des Kurbeltriebes über die Kurbelwelle 14 und aus dem Wechselmomenten der Nockenwellen 24, 26 aufgrund der Spannung und Entlastung der Ventilfedern der von den Nockenwellen ange­ triebenen Gaswechselventile. Fig. 2 shows graphically the dynamic non-uniformity or alternating vibrations of the control drive 10 in degrees camshaft over the speed n of the crankshaft. The solid curve shows the measured total amplitude, the dashed line the dominant second-order vibration and the dotted line the less relevant fourth-order vibration. As can be seen, there is a critical Resonanzbe rich at a speed n of about 2500 min -1 in which the vibration amplitude reaches about 1 ° in the aforementioned four-cylinder internal combustion engine. The vibration excitation results from the gas and mass forces of the crank mechanism via the crankshaft 14 and from the alternating torques of the camshafts 24 , 26 due to the tension and relief of the valve springs of the gas exchange valves driven by the camshafts.

Da der kritische Drehzahlbereich von ca. 2500 min-1 bei Brennkraftmaschi­ nen in Kraftfahrzeugen, also im instationären Betrieb, häufig auftritt, können sowohl störende Geräusche auftreten als auch die Lebensdauer des Um­ schlingungstriebs und dessen Wirkungsgrad (erhöhte Reibungskräfte) be­ einträchtigt werden.Since the critical speed range of approx. 2500 min -1 occurs frequently in internal combustion engines in motor vehicles, i.e. in non-stationary operation, both disturbing noises can occur and the lifespan of the looping drive and its efficiency (increased frictional forces) can be impaired.

Um diese erhöhte Ungleichförmigkeit bzw. den angesprochenen Resonanz­ bereich zu vermeiden, sind die Abtriebsräder 20, 22 auf den Nockenwellen 24, 26 "unrund" ausgeführt. Wie in der Fig. 3 anhand des Abtriebsrades 20 übertrieben dargestellt, sind die Abtriebsräder an vier gleichmäßig über de­ ren Umfang verteilten Bereichen mit Vertiefungen (Einbauchungen) 30, 32, 34, 36 versehen, wobei diese Vertiefungen sich jeweils über einen Umfangsbereich β von 60° erstrecken, in der Winkelhalbierenden bei einem Durchmesser des Abtriebsrades von 100 mm 0,3% bzw. 0,3 mm vertieft sind und schließlich wieder in den Originaldurchmesser übergehen.In order to avoid this increased non-uniformity or the mentioned resonance range, the driven wheels 20 , 22 on the camshafts 24 , 26 are "out of round". As shown exaggerated in Fig. 3 on the basis of the output gear 20, the output gears at four uniformly over de ren circumferential distributed areas with depressions (indentations) 30, 32, 34, 36 is provided, said recesses each extending over a peripheral region β of 60 ° extend in the bisector at a diameter of the driven wheel of 100 mm 0.3% or 0.3 mm and finally go back to the original diameter.

Diese Vertiefungen 30, 32, 34, 36 prägen dem Zahnriemen 12 am Riemen- Einlauf bzw. Auslauf der Abtriebsräder eine Ungleichförmigkeit auf, die sich der durch die Bauart der Brennkraftmaschine gegebenen dynamischen Un­ gleichförmigkeit überlagert und dadurch den kritischen Resonanzbereich verschiebt bzw. eliminiert.These recesses 30 , 32 , 34 , 36 characterize the toothed belt 12 at the belt inlet or outlet of the driven wheels an irregularity which overlaps the dynamic Un uniformity given by the design of the internal combustion engine and thereby shifts or eliminates the critical resonance range.

Alternativ oder zusätzlich ist das abtreibende Rad 18 im Zugtrum des Zahn­ riemens 12 (vgl. Fig. 1) um ein Maß e exzentrisch gelagert, wodurch ab­ hängig vom Durchmesser des Rades 18 dem Steuerungstrieb 10 Kraftände­ rungen bzw. Schwingungen höherer Ordnung (bevorzugt der zweiten Ord­ nung) überlagert werden, die eine Resonanzverschiebung bewirken. Ggf. könnte auch das Spannrad 29 im Lostrum des Zahnriemens 12 unrund aus­ geführt und/oder exzentrisch gelagert sein.Alternatively or additionally, the abortifacient wheel 18 in the tight strand of the toothed belt 12 (see FIG. FIG. 1) mounted eccentrically by an amount e, thereby starting dependent on the diameter of the wheel 18 to the control engine 10 Kraftände stanchions or higher order (oscillations preferably, the second Order), which cause a resonance shift. Possibly. the tensioning wheel 29 could also be guided out of round and / or eccentrically in the lost belt of the toothed belt 12 .

Alternativ oder zusätzlich kann ferner gemäß Fig. 4 der Zahnriemen 12′ in Umfangsrichtung mit Bereichen I größerer Dicke und verringerter bzw. unter­ schiedlicher Elastizität versehen sein, um ebenfalls eine "Verstimmung" der dynamischen Ungleichförmigkeit des Steuerungsantriebes 10 zu bewirken. Die Längselastizität des Zahnriemens 12′ kann z. B. durch die Geometrie oder Verlegung der die Zugkraft bestimmenden, in den Zahnriemen einge­ betteten Fasern 38 beeinflußt werden. Die Anzahl der Bereiche bestimmt wiederum die Ordnung der Störkräfte.Alternatively or additionally, according to FIG. 4, the toothed belt 12 'can be provided in the circumferential direction with regions I of greater thickness and with reduced or different elasticity, in order likewise to “detune” the dynamic non-uniformity of the control drive 10 . The longitudinal elasticity of the toothed belt 12 'can, for. B. by the geometry or laying of the tensile force determining, embedded in the toothed belt fibers 38 are influenced. The number of areas in turn determines the order of the interference forces.

Die Fig. 5 zeigt schließlich ein Reaktionselement in Form eines Stößels 40, der in einer Bohrung 42 im Zylinderkopf 44 der Brennkraftmaschine ver­ schiebbar gelagert ist und auf den eine Schraubendruckfeder 46 wirkt. Die Feder 46 spannt den Stößel 40 gegen einen Nocken 48, der jeweils auf den Nockenwellen 24, 26 (hier Nockenwelle 24) als zusätzlicher Nocken ausge­ bildet ist. Fig. 5 shows a reaction element in the form of a plunger 40 which is slidably mounted in a bore 42 in the cylinder head 44 of the internal combustion engine and on which a helical compression spring 46 acts. The spring 46 tensions the plunger 40 against a cam 48 , which is formed on the camshafts 24 , 26 (here camshaft 24 ) as an additional cam.

Durch eine geeignete Positionierung der Phasenlage und Abstimmung der ausgeübten Wechselmomente (Federkräfte, Hub, Masse, etc.) auf die Nok­ kenwellen 24, 26 wird dem Umschlingungstrieb bzw. Steuerungstrieb 10 eine zusätzliche Ungleichförmigkeit aufgeprägt, die wie vorbeschrieben den kriti­ schen Resonanzbereich vermeidet oder zumindest vermindert.By suitably positioning the phase position and coordinating the exerted alternating torques (spring forces, stroke, mass, etc.) on the Nok kenwellen 24 , 26 , the belt drive or control drive 10 is impressed an additional non-uniformity, which avoids or at least avoids the critical resonance range as described above reduced.

Die Erfindung ist nicht auf das beschriebene Ausführungsbeispiel be­ schränkt. Die Mittel gemäß den Fig. 1, 3-5 können einzeln oder kombiniert miteinander eingesetzt werden. Der Umschlingungstrieb kann auch ein Ket­ tentrieb oder ein einfacher (nicht formschlüssiger) Riementrieb sein. Es können auch andere Aggregate, z. B. eine Einspritzpumpe, ein Kompressor, etc. angetrieben sein. Anstelle eines Reaktionselementes 40 können auch mehrere, und diese ggf. nicht als Stößel, sondern als federnd vorgespannte Schwing- oder Kipphebel ausgeführte Reaktionselemente verwendet sein, die ggf. sogar vorhandene Nocken an den Nockenwellen zusätzlich beauf­ schlagen. Die Reaktionselemente könnten aus baulichen Gründen über der Nockenwelle im Zylinderkopfdeckel gelagert sein.The invention is not limited to the described embodiment. The means shown in FIGS. 1, 3-5 can be used individually or combined with each other. The belt drive can also be a chain drive or a simple (non-positive) belt drive. Other units, e.g. B. an injection pump, a compressor, etc. may be driven. Instead of one reaction element 40 , it is also possible to use a plurality of reaction elements, which may not be designed as a tappet, but rather as spring-loaded rocking or rocking levers, which may additionally impact existing cams on the camshafts. For structural reasons, the reaction elements could be mounted above the camshaft in the cylinder head cover.

Claims (12)

1. Umschlingungstrieb, insbesondere Steuerungsantrieb für eine Brenn­ kraftmaschine, mit einem antreibenden Rad, zumindest einem getriebe­ nen Rad und einem Umschlingungsmittel, gekennzeichnet durch dem Trieb (10) eine zusätzliche Ungleichförmigkeit aufprägende Mittel.1. belt drive, in particular control drive for an internal combustion engine, with a driving wheel, at least one gear NEN wheel and a belt means, characterized by the drive ( 10 ) an additional non-uniformity impressing means. 2. Umschlingungstrieb nach Anspruch 1, dadurch gekennzeichnet, daß zumindest ein an- und/oder abtreibendes Rad (20, 22) unrund ausgebil­ det und/oder exzentrisch gelagert ist.2. Belt drive according to claim 1, characterized in that at least one driving and / or driving wheel ( 20 , 22 ) non-circular ausgebil det and / or is mounted eccentrically. 3. Umschlingungstrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zumindest ein an- oder abtreibendes Rad (20, 22) mit über den Um­ fang verteilten Vertiefungen (30, 32, 34, 36) versehen ist, wobei die Anzahl der Vertiefungen der dominanten Ordnung der Drehbewegung entspricht.3. belt drive according to claim 1 or 2, characterized in that at least one driving or driving wheel ( 20 , 22 ) with over the order distributed wells ( 30 , 32 , 34 , 36 ) is provided, the number of wells dominant order of rotation corresponds. 4. Umschlingungstrieb nach Anspruch 3, dadurch gekennzeichnet, daß bei einem Übersetzungsverhältnis von 2 : 1 das Abtriebsrad (20, 22) mit vier über den Umfang verteilten Vertiefungen (30, 32, 34, 36) versehen ist.4. belt drive according to claim 3, characterized in that at a transmission ratio of 2: 1, the driven wheel ( 20 , 22 ) with four circumferentially distributed recesses ( 30 , 32 , 34 , 36 ) is provided. 5. Umschlingungstrieb nach Anspruch 4, dadurch gekennzeichnet, daß die Vertiefungen (30, 32, 34, 36) jeweils über einen Umfangsbereich β von ca. 30°-60° erstrecken.5. belt drive according to claim 4, characterized in that the recesses ( 30 , 32 , 34 , 36 ) each extend over a peripheral region β of about 30 ° -60 °. 6. Umschlingungstrieb nach den Ansprüchen 3 bis 5, dadurch gekenn­ zeichnet, daß die Vertiefungen (30, 32, 34, 36) < 1% des Raddurchmes­ sers, insbesondere zwischen 0,1% und 0,5% betragen.6. belt drive according to claims 3 to 5, characterized in that the recesses ( 30 , 32 , 34 , 36 ) <1% of the wheel diameter sers, in particular between 0.1% and 0.5%. 7. Umschlingungsgetriebe nach den Ansprüchen 1 und 2, dadurch gekenn­ zeichnet, daß am Zug- oder Lostrum des Umschlingungsmittels (12) ein Rad (18′) anläuft, daß dem Trieb (10) Kraftänderungen höherer Ordnung aufprägt. 7. belt transmission according to claims 1 and 2, characterized in that the train or lost drum of the belt means ( 12 ) starts a wheel ( 18 ') that the drive ( 10 ) impresses higher-order changes in force. 8. Umschlingungstrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Umschlingungsmittel ein Riemen, insbesondere Zahnriemen (12′), mit unterschiedlicher Längselastizität ist.8. belt drive according to claim 1, characterized in that the belt means is a belt, in particular toothed belt ( 12 '), with different longitudinal elasticity. 9. Umschlingungstrieb nach Anspruch 1 oder 8, dadurch gekennzeichnet, daß das Umschlingungsmittel (12′) in seiner Längserstreckung peri­ odisch eine unterschiedliche Dicke und/oder Zahnhöhe aufweist.9. belt drive according to claim 1 or 8, characterized in that the belt means ( 12 ') in its longitudinal extension peri odically has a different thickness and / or tooth height. 10. Umschlingungstrieb nach Anspruch 1, dadurch gekennzeichnet, daß eine das Antriebsrad (20, 22) tragende Welle (24, 26) zumindest einen nicht rotationssymmetrischen Abschnitt (Nocken 48) aufweist, der mit zumindest einem federnd vorgespannten Reaktionselement (40) zusammenwirkt.10. belt drive according to claim 1, characterized in that a drive wheel ( 20 , 22 ) supporting shaft ( 24 , 26 ) has at least one non-rotationally symmetrical section (cam 48 ) which cooperates with at least one resiliently biased reaction element ( 40 ). 11. Umschlingungstrieb nach Anspruch 10, dadurch gekennzeichnet, daß auf der Welle (24, 26) zumindest ein Nocken (48) vorgesehen ist, der ei­ nen in einer Gehäusebohrung (42) geführten, federnd vorgespannte Stößel (40) betätigt.11. Belt drive according to claim 10, characterized in that on the shaft ( 24 , 26 ) at least one cam ( 48 ) is provided, the egg nen in a housing bore ( 42 ) guided, spring-loaded plunger ( 40 ) actuated. 12. Verwendung eines Umschlingungstriebes nach einem oder mehreren der vorhergehenden Ansprüche an einer Brennkraftmaschine, insbesondere für Kraftfahrzeuge, zum Antrieb einer oder mehrerer Nockenwellen (24, 26).12. Use of a belt drive according to one or more of the preceding claims on an internal combustion engine, in particular for motor vehicles, for driving one or more camshafts ( 24 , 26 ).
DE19520508A 1995-06-03 1995-06-03 Control belt or timing drive for IC engine Withdrawn DE19520508A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19520508A DE19520508A1 (en) 1995-06-03 1995-06-03 Control belt or timing drive for IC engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19520508A DE19520508A1 (en) 1995-06-03 1995-06-03 Control belt or timing drive for IC engine

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EP0928908A1 (en) * 1998-01-12 1999-07-14 ContiTech Antriebssysteme GmbH Wheel for use in a belt drive and belt drive
DE19904934A1 (en) * 1999-02-06 2000-08-10 Schaeffler Waelzlager Ohg Camshaft for valve drive in internal combustion engine has arrangement for at least partial compensation of alternating moments caused by action of cams on gas replacement valves
WO2002042664A1 (en) * 2000-11-24 2002-05-30 Baeumler Peter Synchronous drive belt element
DE10120448A1 (en) * 2001-04-26 2002-10-31 Ina Schaeffler Kg Device for smoothing of irregular drive moment of especially camshaft of internal combustion engine has facility whereby force of cam follower system is variable dependent upon RPM
WO2003046413A1 (en) 2001-11-27 2003-06-05 Litens Automotive Synchronous drive apparatus with non-circular drive elements
WO2005026583A1 (en) 2003-09-18 2005-03-24 Litens Automotive Partnership Non-circular rotary component
WO2005114005A1 (en) 2004-05-22 2005-12-01 Schaeffler Kg Belt drive for an internal combustion engine
WO2005119090A1 (en) 2004-05-27 2005-12-15 Schaeffler Kg Belt drive for an internal combustion engine
WO2005119087A1 (en) * 2004-06-03 2005-12-15 Schaeffler Kg Cost-optimized traction mechanism
WO2005119088A1 (en) * 2004-06-03 2005-12-15 Schaeffler Kg Traction mechanism for an internal combustion engine
WO2005121603A1 (en) 2004-06-09 2005-12-22 Schaeffler Kg Wrap-around drive comprising eccentric toothed wheels
WO2006000278A1 (en) * 2004-06-23 2006-01-05 Schaeffler Kg Smooth belt drive for an internal combustion engine
WO2006002709A1 (en) * 2004-06-30 2006-01-12 Schaeffler Kg Wraparound drive of internal combustion engines for auxillary assemblies which are coupled with a force-transmitting connection
WO2006005430A1 (en) * 2004-07-14 2006-01-19 Schaeffler Kg Compensating shaft drive
WO2006005411A1 (en) * 2004-06-18 2006-01-19 Schaeffler Kg Wraparound drive unit
DE102004037262A1 (en) * 2004-07-31 2006-02-16 Ina-Schaeffler Kg traction drive
DE102004040579A1 (en) * 2004-08-21 2006-02-23 Ina-Schaeffler Kg Traction drive, in particular for an internal combustion engine
WO2006018095A1 (en) 2004-08-12 2006-02-23 Schaeffler Kg Belt drive
WO2006032350A1 (en) * 2004-09-21 2006-03-30 Schaeffler Kg Method for dimensioning a control drive having a noncircular disk
WO2006037466A1 (en) 2004-10-05 2006-04-13 Schaeffler Kg Traction mechanism drive with vibration damping
DE102004048629A1 (en) * 2004-10-06 2006-04-13 Ina-Schaeffler Kg Non-circular rotary disk for a timing drive
WO2006037426A1 (en) * 2004-10-05 2006-04-13 Schaeffler Kg Endless drive for internal combustion engines with drive damping
DE102005008676A1 (en) * 2005-02-25 2006-06-22 Audi Ag Toothed wheel for tooth chain drive has external teeth with internal spacing between teeth whereby distance between axis of rotation and pitch circle of toothed wheel changes sinusoidally along its circumference
DE102005008677A1 (en) * 2005-02-25 2006-09-07 Audi Ag Gear wheel for sleeves or roller chain drive e.g. chain drive of internal combustion engine has axis of rotation and pitch circle and distance between both changes along the peripheral of gear wheel
US7125356B2 (en) 2001-11-06 2006-10-24 Borgwarner Inc. Tension-reducing random sprocket
WO2007003329A1 (en) 2005-07-06 2007-01-11 Schaeffler Kg Flexible drive
WO2007003263A1 (en) 2005-07-05 2007-01-11 Schaeffler Kg Continuous belt drive
DE102005031596A1 (en) * 2005-07-06 2007-01-25 Schaeffler Kg Belt or chain drive for vehicle, comprises elliptical or polygonal tension pulley moved by off center element
WO2007033879A1 (en) 2005-09-21 2007-03-29 Schaeffler Kg Traction mechanism drive for an internal combustion engine
WO2007059817A1 (en) * 2005-11-22 2007-05-31 Schaeffler Kg Traction mechanism drive with damping device
WO2007060090A1 (en) * 2005-11-23 2007-05-31 Schaeffler Kg Belt drive
DE102005056198A1 (en) * 2005-11-25 2007-06-06 Audi Ag Belt drive for propelling cam shaft of internal combustion engine, has propelling wheel whose radius, depending upon its angle of rotation, is changed such that intake speed of traction mechanism on propelled wheel is constant
WO2007063035A1 (en) * 2005-12-01 2007-06-07 Contitech Antriebssysteme Gmbh Toothed belt drive
EP1812733A1 (en) * 2004-10-22 2007-08-01 Litens Automotive Partnership Sprocket with 1.5 order, and multiples thereof, vibration canceling profile and synchronous drive employing such a sprocket
WO2007088167A1 (en) 2006-02-01 2007-08-09 Schaeffler Kg Chain drive and use of a chain in a chain drive
WO2007118519A1 (en) 2006-04-12 2007-10-25 Iwis Motorsysteme Gmbh & Co. Kg Chain wheel and timing chain drive for the compensation of dynamic loads
WO2008011924A1 (en) 2006-07-25 2008-01-31 Iwis Motorsysteme Gmbh & Co. Kg Sprocket with alternating pitch spacings
DE102006061317A1 (en) * 2006-12-22 2008-02-21 Audi Ag Vibration damping device for use in internal-combustion engine of motor vehicle, has return chain wheel designed as vibration balance wheel for damping vibrations of endless drive i.e. cogged belt drive
DE102007009489A1 (en) * 2007-02-27 2008-08-28 Audi Ag Oscillation-free operation method for winding drive, involves guiding continuous winding unit around two components, and adjusting phase difference of shafts based on rotation speed and load of winding drive
DE102007020215A1 (en) 2007-04-26 2008-10-30 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Arrangement for suppressing traction element transmission oscillations has circular pulley(s) with non-circular supporting element(s) on lateral surface(s) that at least partly lifts off contact between wrap-around element, circular pulley
DE102007025711A1 (en) * 2007-06-01 2008-12-04 Koenig & Bauer Aktiengesellschaft Reducing vibrations in rotation printing machine involves shifting resonance of disturbing vibrations with natural frequencies of rotation printing machine into lower revolution rate regions with lower disturbing vibration amplitudes
EP1443184B1 (en) * 2003-01-29 2009-08-19 Ford Global Technologies, LLC Variable camshaft drive
WO2010009693A1 (en) * 2008-07-21 2010-01-28 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Output system for a crank-cvt transmission and crank-cvt transmission
CN1965178B (en) * 2004-06-03 2010-07-07 谢夫勒两合公司 Traction mechanism
CN101265962B (en) * 2001-11-27 2010-09-01 利滕斯汽车公司 Synchronous drive apparatus and methods
DE102009033390A1 (en) 2009-07-16 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Tractive drive, particularly control drive for internal combustion engine, has endless traction mechanism connecting drive wheel and driven wheel in form-fit manner
EP2302260A3 (en) * 2004-06-03 2011-06-15 Schaeffler Technologies AG & Co. KG Traction mechanism for an internal combustion engine
US8430775B2 (en) 2007-09-28 2013-04-30 Borgwarner Inc. Multiple tension reducing sprockets in a chain and sprocket system
DE102005040257B4 (en) * 2005-08-24 2014-06-26 Winkelmann Powertrain Components Gmbh & Co. Kg Device for damping vibrations on a shaft, in particular a crankshaft
CN104102793A (en) * 2014-08-04 2014-10-15 安徽江淮汽车股份有限公司 Analysis method for engine crankshaft system torsional vibration
FR3028907A1 (en) * 2014-11-21 2016-05-27 Peugeot Citroen Automobiles Sa SYNCHRONOUS TRANSMISSION ASSEMBLY BY CRANKED BELT
FR3028908A1 (en) * 2014-11-21 2016-05-27 Peugeot Citroen Automobiles Sa SYNCHRONOUS TRANSMISSION ASSEMBLY BY CRANKED BELT
DE102016202858A1 (en) 2016-02-24 2017-08-24 Schaeffler Technologies AG & Co. KG Noise-optimized chain for a sprocket
WO2019010053A1 (en) * 2017-07-05 2019-01-10 Gates Corporation Synchronous belt drive system
EP3719351A1 (en) 2019-04-05 2020-10-07 Leys A belt drive system for reducing mechanical vibrations
US10907721B2 (en) 2015-12-09 2021-02-02 Borgwarner Inc. Non-prevalent order random sprocket
DE102015108988B4 (en) * 2015-06-08 2021-07-01 Volkswagen Aktiengesellschaft Method for damping a vibration of a traction drive, traction drive and internal combustion engine
DE102015117716B4 (en) 2015-10-19 2021-08-12 Volkswagen Aktiengesellschaft Method for setting a preload for a traction mechanism of a traction mechanism, traction mechanism and internal combustion engine

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EP0928908A1 (en) * 1998-01-12 1999-07-14 ContiTech Antriebssysteme GmbH Wheel for use in a belt drive and belt drive
DE19904934A1 (en) * 1999-02-06 2000-08-10 Schaeffler Waelzlager Ohg Camshaft for valve drive in internal combustion engine has arrangement for at least partial compensation of alternating moments caused by action of cams on gas replacement valves
WO2002042664A1 (en) * 2000-11-24 2002-05-30 Baeumler Peter Synchronous drive belt element
DE10120448A1 (en) * 2001-04-26 2002-10-31 Ina Schaeffler Kg Device for smoothing of irregular drive moment of especially camshaft of internal combustion engine has facility whereby force of cam follower system is variable dependent upon RPM
US8066602B2 (en) 2001-11-06 2011-11-29 Borgwarner Inc. Tension-reducing random sprocket
US7654925B2 (en) 2001-11-06 2010-02-02 Borgwarner Inc. Tension-reducing random sprocket
US7125356B2 (en) 2001-11-06 2006-10-24 Borgwarner Inc. Tension-reducing random sprocket
WO2003046413A1 (en) 2001-11-27 2003-06-05 Litens Automotive Synchronous drive apparatus with non-circular drive elements
US7044875B2 (en) 2001-11-27 2006-05-16 Litens Automotive Synchronous drive apparatus and methods
US8303444B2 (en) 2001-11-27 2012-11-06 Litens Automotive Partnership Synchronous drive apparatus and methods
CN100396967C (en) * 2001-11-27 2008-06-25 利滕斯汽车公司 Synchronous drive apparatus with non-circular drive elements
AU2002333137B2 (en) * 2001-11-27 2008-12-04 Litens Automotive Synchronous drive apparatus with non-circular drive elements
US7720650B2 (en) 2001-11-27 2010-05-18 Litens Automotive Synchronous drive apparatus and methods
US7232391B2 (en) 2001-11-27 2007-06-19 Litens Automotive Synchronous drive apparatus and methods
AU2002333137C1 (en) * 2001-11-27 2009-05-14 Litens Automotive Synchronous drive apparatus with non-circular drive elements
CN101265962B (en) * 2001-11-27 2010-09-01 利滕斯汽车公司 Synchronous drive apparatus and methods
EP1443184B1 (en) * 2003-01-29 2009-08-19 Ford Global Technologies, LLC Variable camshaft drive
US7493880B2 (en) 2003-09-18 2009-02-24 Litens Automotive Partnership Non-circular rotary component
US8042507B2 (en) 2003-09-18 2011-10-25 Litens Automotive Partnership Non-circular rotary component
WO2005026583A1 (en) 2003-09-18 2005-03-24 Litens Automotive Partnership Non-circular rotary component
WO2005114005A1 (en) 2004-05-22 2005-12-01 Schaeffler Kg Belt drive for an internal combustion engine
WO2005119090A1 (en) 2004-05-27 2005-12-15 Schaeffler Kg Belt drive for an internal combustion engine
EP2302260A3 (en) * 2004-06-03 2011-06-15 Schaeffler Technologies AG & Co. KG Traction mechanism for an internal combustion engine
CN1965178B (en) * 2004-06-03 2010-07-07 谢夫勒两合公司 Traction mechanism
WO2005119088A1 (en) * 2004-06-03 2005-12-15 Schaeffler Kg Traction mechanism for an internal combustion engine
WO2005119087A1 (en) * 2004-06-03 2005-12-15 Schaeffler Kg Cost-optimized traction mechanism
WO2005121603A1 (en) 2004-06-09 2005-12-22 Schaeffler Kg Wrap-around drive comprising eccentric toothed wheels
DE102004028222A1 (en) * 2004-06-09 2005-12-29 Ina-Schaeffler Kg Belt drive with non-circular gears
WO2006005411A1 (en) * 2004-06-18 2006-01-19 Schaeffler Kg Wraparound drive unit
WO2006000278A1 (en) * 2004-06-23 2006-01-05 Schaeffler Kg Smooth belt drive for an internal combustion engine
DE102004030287A1 (en) * 2004-06-23 2006-01-12 Ina-Schaeffler Kg Belt drive for internal combustion engine with drive calming
WO2006002709A1 (en) * 2004-06-30 2006-01-12 Schaeffler Kg Wraparound drive of internal combustion engines for auxillary assemblies which are coupled with a force-transmitting connection
WO2006005430A1 (en) * 2004-07-14 2006-01-19 Schaeffler Kg Compensating shaft drive
US7461624B2 (en) 2004-07-14 2008-12-09 Schaeffler Kg Compensating shaft drive
DE102004037262A1 (en) * 2004-07-31 2006-02-16 Ina-Schaeffler Kg traction drive
WO2006018095A1 (en) 2004-08-12 2006-02-23 Schaeffler Kg Belt drive
DE102004040579A1 (en) * 2004-08-21 2006-02-23 Ina-Schaeffler Kg Traction drive, in particular for an internal combustion engine
WO2006021279A1 (en) 2004-08-21 2006-03-02 Schaeffler Kg Traction mechanism drive, especially for an internal combustion engine
WO2006032350A1 (en) * 2004-09-21 2006-03-30 Schaeffler Kg Method for dimensioning a control drive having a noncircular disk
WO2006037426A1 (en) * 2004-10-05 2006-04-13 Schaeffler Kg Endless drive for internal combustion engines with drive damping
WO2006037466A1 (en) 2004-10-05 2006-04-13 Schaeffler Kg Traction mechanism drive with vibration damping
DE102004048629A1 (en) * 2004-10-06 2006-04-13 Ina-Schaeffler Kg Non-circular rotary disk for a timing drive
EP1812733A4 (en) * 2004-10-22 2011-01-26 Litens Automotive Inc Sprocket with 1.5 order, and multiples thereof, vibration canceling profile and synchronous drive employing such a sprocket
EP1812733A1 (en) * 2004-10-22 2007-08-01 Litens Automotive Partnership Sprocket with 1.5 order, and multiples thereof, vibration canceling profile and synchronous drive employing such a sprocket
DE102005008676A1 (en) * 2005-02-25 2006-06-22 Audi Ag Toothed wheel for tooth chain drive has external teeth with internal spacing between teeth whereby distance between axis of rotation and pitch circle of toothed wheel changes sinusoidally along its circumference
DE102005008677A1 (en) * 2005-02-25 2006-09-07 Audi Ag Gear wheel for sleeves or roller chain drive e.g. chain drive of internal combustion engine has axis of rotation and pitch circle and distance between both changes along the peripheral of gear wheel
DE102005008677B4 (en) * 2005-02-25 2010-07-08 Audi Ag Gear for a sleeve or roller chain drive
WO2007003263A1 (en) 2005-07-05 2007-01-11 Schaeffler Kg Continuous belt drive
WO2007003329A1 (en) 2005-07-06 2007-01-11 Schaeffler Kg Flexible drive
DE102005031596A1 (en) * 2005-07-06 2007-01-25 Schaeffler Kg Belt or chain drive for vehicle, comprises elliptical or polygonal tension pulley moved by off center element
DE102005040257B4 (en) * 2005-08-24 2014-06-26 Winkelmann Powertrain Components Gmbh & Co. Kg Device for damping vibrations on a shaft, in particular a crankshaft
DE102005044987B4 (en) * 2005-09-21 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Traction drive for an internal combustion engine
WO2007033879A1 (en) 2005-09-21 2007-03-29 Schaeffler Kg Traction mechanism drive for an internal combustion engine
DE102005044987A1 (en) * 2005-09-21 2007-04-12 Schaeffler Kg Traction drive for an internal combustion engine
WO2007059817A1 (en) * 2005-11-22 2007-05-31 Schaeffler Kg Traction mechanism drive with damping device
WO2007060090A1 (en) * 2005-11-23 2007-05-31 Schaeffler Kg Belt drive
DE102005056198A1 (en) * 2005-11-25 2007-06-06 Audi Ag Belt drive for propelling cam shaft of internal combustion engine, has propelling wheel whose radius, depending upon its angle of rotation, is changed such that intake speed of traction mechanism on propelled wheel is constant
WO2007063035A1 (en) * 2005-12-01 2007-06-07 Contitech Antriebssysteme Gmbh Toothed belt drive
WO2007088167A1 (en) 2006-02-01 2007-08-09 Schaeffler Kg Chain drive and use of a chain in a chain drive
CN101379320B (en) * 2006-02-01 2012-04-18 谢夫勒科技有限两合公司 Chain drive and use of a chain in a chain drive
US8113975B2 (en) 2006-04-12 2012-02-14 Iwis Motorsysteme Gmbh & Co. Kg Chain wheel and timing chain drive for the compensation of dynamic loads
WO2007118519A1 (en) 2006-04-12 2007-10-25 Iwis Motorsysteme Gmbh & Co. Kg Chain wheel and timing chain drive for the compensation of dynamic loads
DE102006034364B4 (en) 2006-07-25 2021-07-29 JOH. WINKLHOFER & SÖHNE GMBH & Co. KG Sprocket with alternating pitches
WO2008011924A1 (en) 2006-07-25 2008-01-31 Iwis Motorsysteme Gmbh & Co. Kg Sprocket with alternating pitch spacings
DE102006061317A1 (en) * 2006-12-22 2008-02-21 Audi Ag Vibration damping device for use in internal-combustion engine of motor vehicle, has return chain wheel designed as vibration balance wheel for damping vibrations of endless drive i.e. cogged belt drive
DE102007009489A1 (en) * 2007-02-27 2008-08-28 Audi Ag Oscillation-free operation method for winding drive, involves guiding continuous winding unit around two components, and adjusting phase difference of shafts based on rotation speed and load of winding drive
DE102007020215A1 (en) 2007-04-26 2008-10-30 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Arrangement for suppressing traction element transmission oscillations has circular pulley(s) with non-circular supporting element(s) on lateral surface(s) that at least partly lifts off contact between wrap-around element, circular pulley
DE102007025711A1 (en) * 2007-06-01 2008-12-04 Koenig & Bauer Aktiengesellschaft Reducing vibrations in rotation printing machine involves shifting resonance of disturbing vibrations with natural frequencies of rotation printing machine into lower revolution rate regions with lower disturbing vibration amplitudes
US8430775B2 (en) 2007-09-28 2013-04-30 Borgwarner Inc. Multiple tension reducing sprockets in a chain and sprocket system
WO2010009693A1 (en) * 2008-07-21 2010-01-28 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Output system for a crank-cvt transmission and crank-cvt transmission
DE102009033390A1 (en) 2009-07-16 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Tractive drive, particularly control drive for internal combustion engine, has endless traction mechanism connecting drive wheel and driven wheel in form-fit manner
CN104102793A (en) * 2014-08-04 2014-10-15 安徽江淮汽车股份有限公司 Analysis method for engine crankshaft system torsional vibration
FR3028907A1 (en) * 2014-11-21 2016-05-27 Peugeot Citroen Automobiles Sa SYNCHRONOUS TRANSMISSION ASSEMBLY BY CRANKED BELT
FR3028908A1 (en) * 2014-11-21 2016-05-27 Peugeot Citroen Automobiles Sa SYNCHRONOUS TRANSMISSION ASSEMBLY BY CRANKED BELT
DE102015108988B4 (en) * 2015-06-08 2021-07-01 Volkswagen Aktiengesellschaft Method for damping a vibration of a traction drive, traction drive and internal combustion engine
DE102015117716B4 (en) 2015-10-19 2021-08-12 Volkswagen Aktiengesellschaft Method for setting a preload for a traction mechanism of a traction mechanism, traction mechanism and internal combustion engine
US10907721B2 (en) 2015-12-09 2021-02-02 Borgwarner Inc. Non-prevalent order random sprocket
DE102016202858A1 (en) 2016-02-24 2017-08-24 Schaeffler Technologies AG & Co. KG Noise-optimized chain for a sprocket
CN110832170A (en) * 2017-07-05 2020-02-21 盖茨公司 Synchronous belt driving system
WO2019010053A1 (en) * 2017-07-05 2019-01-10 Gates Corporation Synchronous belt drive system
US11193563B2 (en) 2017-07-05 2021-12-07 Gates Corporation Synchronous belt drive system
CN110832170B (en) * 2017-07-05 2022-04-08 盖茨公司 Synchronous belt driving system
EP3719351A1 (en) 2019-04-05 2020-10-07 Leys A belt drive system for reducing mechanical vibrations

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