EP1766263A1 - Compensating shaft drive - Google Patents

Compensating shaft drive

Info

Publication number
EP1766263A1
EP1766263A1 EP05770258A EP05770258A EP1766263A1 EP 1766263 A1 EP1766263 A1 EP 1766263A1 EP 05770258 A EP05770258 A EP 05770258A EP 05770258 A EP05770258 A EP 05770258A EP 1766263 A1 EP1766263 A1 EP 1766263A1
Authority
EP
European Patent Office
Prior art keywords
drive
crankshaft
combustion engine
compensating
internal combustion
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Withdrawn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
EP05770258A
Other languages
German (de)
French (fr)
Inventor
Thomas Ullein
Reinhard Koch
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler KG filed Critical Schaeffler KG
Publication of EP1766263A1 publication Critical patent/EP1766263A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • F16H35/02—Gearings or mechanisms with other special functional features for conveying rotary motion with cyclically varying velocity 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2173—Cranks and wrist pins
    • Y10T74/2183—Counterbalanced

Definitions

  • the invention relates to balancing drives for driving one or more balance shafts of an internal combustion engine with a toothed belt or a chain, which connects a driven gear of the crankshaft of the internal combustion engine with one or more drive wheels on the balance shafts.
  • the balancing drives generally start from the crankshaft of the internal combustion engine and drive massed shafts (balancing shafts), which, for B. cause a piston mass balance.
  • Such shoots are generally characterized by the fact that the stress on the traction means is very high. This is primarily due to the fact that the balance shafts have the tendency to rotate with uniform rotational movement due to their high inertia. Due to the nonuniformity in the rotation of the crankshaft, this non-uniformity is transmitted to the balancing shaft via the traction means, that is to say the toothed belt or the chain, which leads to extreme stresses on the traction means. The situation is aggravated by the fact that the balancer shafts often rotate at twice the engine speed, which causes additional stress (centrifugal force + wear stress) of the traction device. Therefore, these shoots are often not durable and very prone to repair.
  • the invention is therefore based on the object, a balancing drive of the type mentioned in such a way that a reduction in the load of the traction device and thus a life extension of such Drives results.
  • the invention provides that the Ab ⁇ drive wheel of the crankshaft and / or the drive wheels or the balancer shafts are formed out of round so that they impart the drive a Un Eisenför ⁇ mbericht by the fluctuations in the rotational movement of the crankshaft at least partially be compensated.
  • the invention thus makes use of the already proven and proven drive calming by timing gears of a drive gear even for the case of a balance shaft drive, in which such power steering arrangements have hitherto not been provided.
  • the drive wheel and / or the driven wheel are oval or polygonal, wherein the shape depends essentially only on the number of cylinders of the internal combustion engine, since through them primarily the Ununiformities in the rotation of the crankshaft are caused and thereby the Fre ⁇ is given quency with the targeted introduction of Schwarzun GmbH- formality must be made.
  • the drive wheel or the drive wheel it is advisable to design the drive wheel or the drive wheel as oval.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The inventive compensating drive for driving a compensating shaft of an internal combustion engine comprises a toothed belt or a chain which connects the crankshaft driven wheel of an internal combustion engine to a drive wheel arranged on the shaft or on the compensating shafts, wherein the crankshaft driven wheel (2, 2') and/ or the drive shaft(s) (5) of the compensating shafts (4) are shaped non-circular in such a way that they transmit to a drive a variability which compensates the vibrations produced during the crankshaft (1) rotation.

Description

Beschreibung der Erfindung Description of the invention
AusgleichswellenantriebBalance shaft drive
Gebiet der ErfindungField of the invention
Die Erfindung bezieht sich auf Ausgleichstriebe zum Antrieb einer oder mehre¬ rer Ausgleichswellen eines Verbrennungsmotors mit einem Zahnriemen oder einer Kette, die ein Abtriebsrad der Kurbelwelle des Verbrennungsmotors mit einem oder mehreren Antriebsrädern auf den Ausgleichswellen verbindet.The invention relates to balancing drives for driving one or more balance shafts of an internal combustion engine with a toothed belt or a chain, which connects a driven gear of the crankshaft of the internal combustion engine with one or more drive wheels on the balance shafts.
Hintergrund der ErfindungBackground of the invention
Die Ausgleichstriebe gehen grundsätzlich von der Kurbelwelle des Verbren- nungsmotors ab und treiben massenbestückte Wellen (Ausgleichswellen) an, die z. B. einen Kolbenmassenausgleich bewirken. Derartige Triebe zeichnen sich im Allgemeinen dadurch aus, dass die Beanspruchung des Zugmittels sehr hoch ist. Dies entsteht in erster Linie dadurch, dass die Ausgleichswellen aufgrund ihrer hohen Massenträgheit das Bestreben haben, mit gleichförmiger Drehbewegung zu rotieren. Durch die Ungleichförmigkeit bei der Rotation der Kurbelwelle wird über das Zugmittel, also dem Zahnriemen oder die Kette, die¬ se Ungleichförmigkeit auf die Ausgleichswelle übertragen, was zu extremen Beanspruchungen des Zugmittels führt. Die Situation wird dabei noch dadurch verschärft, dass die Ausgleichswellen häufig mit doppelter Motordrehzahl rotie- ren, was eine zusätzliche Beanspruchung (Zentrifugalkraft + Verschleißbean¬ spruchung) des Zugmittels verursacht. Deshalb sind diese Triebe häufig nicht dauerfest und sehr reparaturanfällig.The balancing drives generally start from the crankshaft of the internal combustion engine and drive massed shafts (balancing shafts), which, for B. cause a piston mass balance. Such shoots are generally characterized by the fact that the stress on the traction means is very high. This is primarily due to the fact that the balance shafts have the tendency to rotate with uniform rotational movement due to their high inertia. Due to the nonuniformity in the rotation of the crankshaft, this non-uniformity is transmitted to the balancing shaft via the traction means, that is to say the toothed belt or the chain, which leads to extreme stresses on the traction means. The situation is aggravated by the fact that the balancer shafts often rotate at twice the engine speed, which causes additional stress (centrifugal force + wear stress) of the traction device. Therefore, these shoots are often not durable and very prone to repair.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, einen Ausgleichstrieb der eingangs genannten Art so auszugestalten, dass sich eine Verringerung der Belastung des Zugmittels und damit eine Lebensdauerverlängerung solcher Antriebe ergibt.The invention is therefore based on the object, a balancing drive of the type mentioned in such a way that a reduction in the load of the traction device and thus a life extension of such Drives results.
Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass das Ab¬ triebsrad der Kurbelwelle und/oder das oder die Antriebsräder der Ausgleich- wellen derart unrund ausgebildet sind, dass sie dem Trieb eine Ungleichför¬ migkeit aufprägen durch die Schwankungen in der Rotationsbewegung der Kurbelwelle zumindest teilweise kompensiert werden.To achieve this object, the invention provides that the Ab¬ drive wheel of the crankshaft and / or the drive wheels or the balancer shafts are formed out of round so that they impart the drive a Ungleichför¬ migkeit by the fluctuations in the rotational movement of the crankshaft at least partially be compensated.
Die Erfindung nützt damit die bereits für Steuertriebe eingesetzte und bewährte Triebberuhigung durch unrunde Ausbildung eines Antriebszahnrads auch für den Fall eines Ausgleichswellenantriebs, bei welchem derartige Triebberuhi¬ gungen bisher noch nicht vorgesehen waren.The invention thus makes use of the already proven and proven drive calming by timing gears of a drive gear even for the case of a balance shaft drive, in which such power steering arrangements have hitherto not been provided.
In Ausgestaltung der Erfindung kann dabei vorgesehen sein, dass das An- triebsrad und/oder das Abtriebsrad oval oder auch polygonal ausgebildet sind, wobei die Form im Wesentlichen nur von der Zahl der Zylinder des Verbren¬ nungsmotors abhängt, da durch sie in erster Linie die Ungleichförmigkeiten bei der Rotation der Kurbelwelle verursacht werden und dadurch auch die Fre¬ quenz vorgegeben wird mit der eine gezielte Einbringung einer Gegenungleich- förmigkeit erfolgen muss. Für Vierzylindermotoren bietet es sich an das Ab¬ triebsrad oder das Antriebsrad als oval auszubilden.In an embodiment of the invention, it may be provided that the drive wheel and / or the driven wheel are oval or polygonal, wherein the shape depends essentially only on the number of cylinders of the internal combustion engine, since through them primarily the Ununiformities in the rotation of the crankshaft are caused and thereby the Fre¬ is given quency with the targeted introduction of Gegenungleich- formality must be made. For four-cylinder engines, it is advisable to design the drive wheel or the drive wheel as oval.
Durch die erfindungsgemäße unrunde Ausbildung wird erreicht, dass in Pha¬ sen beschleunigter Bewegung, also wenn gerade der Verbrennungshub im Kolben des Verbrennungsmotors stattfindet, das Zugmittel sich auf einem klei¬ neren Durchmesser befindet, um die Beschleunigung im Zugmittel und somit die Belastung zu reduzieren.The non-circular design according to the invention ensures that in phases of accelerated movement, ie when the combustion stroke is taking place in the piston of the internal combustion engine, the traction means is located on a smaller diameter in order to reduce the acceleration in the traction means and thus the load.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Dabei zeigen: Fig. 1 eine Teilansicht eines Motorraums mit der Kurbelwelle und zwei Ausgleichswellen mit einem Kettenantrieb,Further advantages, features and details of the invention will become apparent from the following description of an embodiment. Showing: 1 is a partial view of an engine compartment with the crankshaft and two balance shafts with a chain drive,
Fig. 2 eine Ansicht eines als Abtriebs- oder Antriebsrad für einen er- findungsgemäßen Ausgleichstrieb verwendbaren Zahnrades für einen Riementrieb, undFIG. 2 shows a view of a toothed wheel for a belt drive which can be used as output or drive wheel for a compensating drive according to the invention, and FIG
Fig. 3 eine Ansicht eines als Abtriebs- oder Antriebsrad für einen er¬ findungsgemäßen Ausgleichstrieb verwendbaren Zahnrades für einen Kettenantrieb.Fig. 3 is a view of a suitable as output or drive wheel for a er¬ inventive compensation gear for a chain drive.
Detaillierte Beschreibung der ZeichnungenDetailed description of the drawings
In dem Motorausschnitt nach Fig. 1 erkennt man bei 1 die Kurbelwelle auf der erfindungsgemäß neben den üblichen anderen Abtriebszahnrädern auch ein erfindungsgemäß ausgestaltetes Abtriebszahnrad 2 gemäß Fig. 2 drehfest auf¬ gebracht ist, um über eine Kette oder Zahnriemen 3 die Ausgleichswellen 4 und 4' anzutreiben. Auf beiden sitzt ein Antriebszahnrad 5, wobei dieses An¬ triebszahnrad 5 entweder anstelle des Abtriebszahnrads 2 oder auch zusätz- lieh zu diesem als Ausgleichszahnrad mit ovaler oder polygonaler Ausbildung ausgestaltet sein kann. Bei ovaler Ausbildung des Abtriebszahnrads 2 und/oder der Antriebszahnräder 4 gemäß Fig. 2 ergibt sich ein optimaler Aus¬ gleich für einen Vierzylindermotor. Das Gleiche gilt auch für das als Abtriebs¬ oder Antriebszahnrad geeignete Zahnrad 2 in Fig. 2, das speziell als Riemen- rad für einen Riemenantrieb gestaltet ist. Bezugszahlen1, the crankshaft is shown at 1 according to the invention in addition to the usual other output gears and an inventively ausgestaltetes driven gear 2 shown in FIG. 2 rotatably auf¬ brought to a chain or timing belt 3, the balance shafts 4 and 4 '. drive. On both sits a drive gear 5, which drive gear 5 can be designed either instead of the output gear 2 or additionally borrowed to this as a compensating gear with an oval or polygonal design. In the case of an oval design of the output gearwheel 2 and / or of the drive gearwheels 4 according to FIG. 2, an optimum compensation for a four-cylinder engine results. The same also applies to the suitable as Abtriebs¬ or drive gear 2 in Fig. 2, which is designed specifically as a belt wheel for a belt drive. reference numerals
1 Kurbelwelle1 crankshaft
2, 2' Abtriebszahnrad2, 2 'output gear
3 Zahnriemen / Kette3 toothed belt / chain
4, 4' Ausgleichswellen 5 Antriebszahnrad 4, 4 'balance shafts 5 drive gear

Claims

Patentansprüche claims
1. Ausgleichstrieb zum Antrieb einer Ausgleichswelle eines Verbren- nungsmotors mit einem Zahnriemen oder einer Kette, die ein Abtriebsrad der Kurbelwelle des Verbrennungsmotors mit einem oder mehreren An¬ triebsrädern auf den Ausgleichswellen verbindet, dadurch gekennzeich¬ net, dass das Abtriebsrad (2, 2!) der Kurbelwelle und/oder das oder die Antriebsräder (5) der Ausgleichswellen (4) derart unrund ausgebildet sind, dass sie dem Trieb eine Ungleichförmigkeit aufprägen, durch die1. balancing drive for driving a balancer shaft of a combustion engine with a toothed belt or a chain that connects a driven gear of the crankshaft of the internal combustion engine with one or more An¬ drive wheels on the balance shafts, characterized gekennzeich¬ net, that the output gear (2, 2 ! ) of the crankshaft and / or the one or more drive wheels (5) of the balance shafts (4) are formed out of round so that they impart a nonuniformity to the drive, by the
Schwankungen in der Rotationsbewegung der Kurbelwelle (1) zumindest teilweise kompensiert werden.Variations in the rotational movement of the crankshaft (1) are at least partially compensated.
2. Ausgleichstrieb nach Anspruch 1 , dadurch gekennzeichnet, dass das Antriebsrad (5) und/oder das oder die Abtriebsräder (2, 2') oval ausge¬ bildet sind.2. Ausgleichsieb according to claim 1, characterized in that the drive wheel (5) and / or the or the driven wheels (2, 2 ') are oval ausge¬ forms.
3. Ausgleichstrieb nach Anspruch 1 , dadurch gekennzeichnet, dass das Antriebsrad und/oder das oder die Abtriebsräder polygonal ausgebildet sind. 3. Ausgleichstrieb according to claim 1, characterized in that the drive wheel and / or the output or the driven wheels are formed polygonal.
EP05770258A 2004-07-14 2005-06-25 Compensating shaft drive Withdrawn EP1766263A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004033927A DE102004033927A1 (en) 2004-07-14 2004-07-14 Balance shaft drive
PCT/EP2005/006878 WO2006005430A1 (en) 2004-07-14 2005-06-25 Compensating shaft drive

Publications (1)

Publication Number Publication Date
EP1766263A1 true EP1766263A1 (en) 2007-03-28

Family

ID=34973167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05770258A Withdrawn EP1766263A1 (en) 2004-07-14 2005-06-25 Compensating shaft drive

Country Status (6)

Country Link
US (1) US7461624B2 (en)
EP (1) EP1766263A1 (en)
CN (1) CN1985106A (en)
CA (1) CA2572400C (en)
DE (1) DE102004033927A1 (en)
WO (1) WO2006005430A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102010009397A1 (en) 2010-02-26 2011-09-01 Schaeffler Technologies Gmbh & Co. Kg Mass balance device of an internal combustion engine
CN103104656B (en) * 2011-11-11 2016-12-28 上海汽车集团股份有限公司 Crankshaft vibration damper
US9341243B2 (en) 2012-03-29 2016-05-17 Litens Automotive Partnership Tensioner and endless drive arrangement
EP3112034B1 (en) * 2015-07-03 2024-06-05 Alfdex AB Centrifugal separator structure and assembly
USD800194S1 (en) * 2016-09-12 2017-10-17 The Charles Machine Works, Inc. Sprocket with mud relief
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement
US11421561B2 (en) * 2017-07-05 2022-08-23 Gates Corporation Synchronous belt drive system
US11193563B2 (en) * 2017-07-05 2021-12-07 Gates Corporation Synchronous belt drive system
DE102020102159A1 (en) 2020-01-29 2021-07-29 Ruag Ammotec Gmbh METHOD AND DEVICE FOR CHECKING THE COMBUSTION OF A LIGHT SET OF A LIGHT PLATE LIGHT, IGNITION UNIT FOR LIGHTING A LIGHT SET OF A LIGHT PLATE AND SYSTEM

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BE864208A (en) * 1978-02-22 1978-06-16 Frerotte Marcelle A G ANGULAR SPEED RECTIFIER FOR POWER TAKE-OFF SHAFT OF EXPLOSION MOTORS
JPS58225242A (en) * 1982-06-24 1983-12-27 Yanmar Diesel Engine Co Ltd Balancing apparatus for single-cylinder engine
JPS60104829A (en) * 1983-11-12 1985-06-10 Yanmar Diesel Engine Co Ltd Balancer device for reciprocating engine
JPH0814305B2 (en) * 1986-10-01 1996-02-14 三菱自動車工業株式会社 Constant speed drive
US4865577A (en) * 1988-09-08 1989-09-12 Trustees Of Columbia University In The City Of New York Noncircular drive
CA2080791A1 (en) * 1991-11-22 1993-05-23 David J. Runnels Bicycle with rhomboidal gear
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Also Published As

Publication number Publication date
US20080041330A1 (en) 2008-02-21
CN1985106A (en) 2007-06-20
CA2572400A1 (en) 2006-01-19
DE102004033927A1 (en) 2006-02-16
WO2006005430A1 (en) 2006-01-19
US7461624B2 (en) 2008-12-09
CA2572400C (en) 2013-12-03

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