WO2006074743A1 - Positioning of a deflection roller in a traction mechanism drive comprising a belt-driven starter generator - Google Patents

Positioning of a deflection roller in a traction mechanism drive comprising a belt-driven starter generator Download PDF

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Publication number
WO2006074743A1
WO2006074743A1 PCT/EP2005/012152 EP2005012152W WO2006074743A1 WO 2006074743 A1 WO2006074743 A1 WO 2006074743A1 EP 2005012152 W EP2005012152 W EP 2005012152W WO 2006074743 A1 WO2006074743 A1 WO 2006074743A1
Authority
WO
WIPO (PCT)
Prior art keywords
deflection roller
starter generator
belt
crankshaft
traction mechanism
Prior art date
Application number
PCT/EP2005/012152
Other languages
German (de)
French (fr)
Inventor
Rainer Pflug
Michael Bogner
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 WO2006074743A1 publication Critical patent/WO2006074743A1/en

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
    • 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
    • F16H7/14—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of a driving or driven pulley
    • 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
    • F16H7/18—Means for guiding or supporting belts, ropes, or chains

Definitions

  • the invention relates to a traction mechanism drive for a combustion engine with a crankshaft, a starter generator, preferably used as a tensioning device, an air conditioning compressor and a deflection roller encircling belt drive.
  • the deflection roller can be arranged in different positions between in each case two of the three aggregates mentioned - if appropriate, also further units can be switched on.
  • the invention is therefore based on the object to provide a position with which the longest possible system life is guaranteed.
  • the invention provides that the deflection roller is arranged in the slack side between the crankshaft and starter generator.
  • the guide roller is arranged asymmetrically such that the Riementruminn to the adjacent units, ie the crankshaft on the one hand and the starter generator on the other hand, are unequal. These unequal Riementruminn results in a detuning, so that resonance vibrations are prevented.
  • the deflection roller should, in an embodiment of the invention, have a diameter which is greater than 60 mm, preferably greater than 70 mm.
  • the deflection roller is positioned so that - as known per se - the wrap angle ⁇ on the starter generator ⁇ > 160 °, preferably ⁇ > 180 °.
  • the belt 1 wraps around the drive wheel 2 of the crankshaft with the direction of rotation shown as arrow 3, the wheel 4 of the starter generator 5, the wheel 6 of the air conditioning compressor and is thereby deflected by a deflection roller. Ie 7 excited.
  • the guide roller 7, which is rigidly arranged during operation, is arranged in the slack side 1a of the belt (slack side is based on the normal engine operation when the crankshaft is the driving member to understand), as in this way and Way during the main operation, ie during the main period of engine operation, only small loads on the guide roller 7 act, so that their rolling bearing can be dimensioned cheaper and thus the belt life increases because of the lower clamping load.
  • the Riementrumin are each between the tangential inlet points of Umslinglingstriebs between the crankshaft and diverter 7 and between diverter 7 and starter generator 5 different to avoid the occurrence of resonant vibrations.
  • the positioning of the pulley shown is much better for achieving a long system life than an arrangement in which the pulley between starter generator 5 and air conditioning compressor or between air compressor and crankshaft would be arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Pulleys (AREA)

Abstract

Disclosed is a traction mechanism drive for a combustion engine, comprising a belt drive which wraps around the crankshaft, a starter generator (5) that is preferably used as a tensioning device, an air conditioning compressor (6), and a deflection roller (7). The deflection roller (7) is disposed in the empty half (1a) located between the crankshaft (2) and the starter generator (5).

Description

Bezeichnung der Erfindung Name of the invention
Positionierung einer Umlenkrolle bei Zugmitteltrieb mit riemengetriebenemPositioning of a pulley with traction drive with belt-driven
Startergeneratorstarter generator
Gebiet der ErfindungField of the invention
Die Erfindung bezieht sich auf einen Zugmitteltrieb für einen Verbrennungsmo- tor mit einem die Kurbelwelle, einen, vorzugsweise als Spanneinrichtung verwendeten, Startergenerator, einen Klimakompressor und eine Umlenkrolle umschlingenden Umschlingungstrieb.The invention relates to a traction mechanism drive for a combustion engine with a crankshaft, a starter generator, preferably used as a tensioning device, an air conditioning compressor and a deflection roller encircling belt drive.
Hintergrund der ErfindungBackground of the invention
Bei einem derartigen Umschlingungstrieb kann die Umlenkrolle in unterschiedlichen Positionen zwischen jeweils zwei der angesprochenen drei Aggregaten - gegebenenfalls können auch weitere Aggregate eingeschaltet sein - angeordnet werden.With such a belt drive, the deflection roller can be arranged in different positions between in each case two of the three aggregates mentioned - if appropriate, also further units can be switched on.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, eine Position anzugeben, mit der eine möglichst lange Systemlebensdauer gewährleistet ist.The invention is therefore based on the object to provide a position with which the longest possible system life is guaranteed.
Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass die Umlenkrolle im Leertrum zwischen Kurbelwelle und Startergenerator angeordnet ist.To achieve this object, the invention provides that the deflection roller is arranged in the slack side between the crankshaft and starter generator.
Durch die erfindungsgemäße Anordnung wirken nur während des Startbetriebs, wenn also der Startergenerator als Anlasser das antreibende Element darstellt, hohe Kräfte auf die Umlenkrolle ein. Dies ist jedoch nur - bezogen auf die Betriebszeit - in einem sehr kurzen Zeitanteil der Fall, während mit einem hohen Zeitanteil eine geringe Belastung während des eigentlichen Generatorbetriebs vorliegt, wenn nämlich das Antriebselement die Kurbelwelle des Verbrennungsmotors ist. Durch diese geringe Belastung mit hohem Zeitanteil kann das Wälzlager in der Umlenkrolle kostengünstig dimensioniert werden und darüber hinaus steigt die Lebensdauer an.By virtue of the arrangement according to the invention, high forces act on the deflection roller only during start-up operation, that is to say when the starter generator as the starter is the driving element. However, this is only - in relation to the operating time - in a very short time proportion of the case, while a high proportion of time a small load during the actual generator operation is present, namely, when the drive element is the crankshaft of the internal combustion engine. Due to this low load with a high proportion of time, the rolling bearing can be cost-effectively dimensioned in the pulley and beyond the life increases.
In Ausgestaltung der Erfindung kann vorgesehen sein, dass die Umlenkrolle asymmetrisch angeordnet ist derart, dass die Riementrumlängen zu dem benachbarten Aggregaten, also zur Kurbelwelle einerseits und zum Startergenerator andererseits, ungleich sind. Durch diese ungleichen Riementrumlängen ergibt sich eine Verstimmung, sodass Resonanzschwingungen verhindert werden.In an embodiment of the invention can be provided that the guide roller is arranged asymmetrically such that the Riementrumlängen to the adjacent units, ie the crankshaft on the one hand and the starter generator on the other hand, are unequal. These unequal Riementrumlängen results in a detuning, so that resonance vibrations are prevented.
Um eine zu starke Umbiegung des Umschlingungstriebs an der Umlenkrolle mit der dadurch bedingten Wechselbiegung zu vermeiden, soll in Ausgestaltung der Erfindung die Umlenkrolle einen Durchmesser aufweisen, der größer als 60 mm, vorzugsweise größer als 70 mm ist.In order to avoid excessive bending of the belt drive on the deflection roller with the resulting change in bending, the deflection roller should, in an embodiment of the invention, have a diameter which is greater than 60 mm, preferably greater than 70 mm.
Schließlich liegt es auch noch im Rahmen der Erfindung, dass die Umlenkrolle so positioniert ist, dass - wie an sich bekannt - der Umschlingungswinkel α am Startergenerator α > 160°, vorzugsweise α > 180°, ist.Finally, it is also within the scope of the invention that the deflection roller is positioned so that - as known per se - the wrap angle α on the starter generator α> 160 °, preferably α> 180 °.
Kurze Beschreibung der ZeichnungShort description of the drawing
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels sowie anhand der Zeichnung, die einen Motor mit einem erfindungsgemäßen Zugmitteltrieb zeigt.Further advantages, features and details of the invention will become apparent from the following description of an embodiment and with reference to the drawing, which shows a motor with a traction mechanism according to the invention.
Detaillierte Beschreibung der ZeichnungDetailed description of the drawing
Das Umschlingungsmittel 1 umschlingt das Antriebsrad 2 der Kurbelwelle mit der als Pfeil 3 eingezeichneten Umlaufrichtung, das Rad 4 des Startergenerators 5, das Rad 6 des Klimakompressors und wird dabei durch eine Umlenkrol- Ie 7 gespannt.The belt 1 wraps around the drive wheel 2 of the crankshaft with the direction of rotation shown as arrow 3, the wheel 4 of the starter generator 5, the wheel 6 of the air conditioning compressor and is thereby deflected by a deflection roller. Ie 7 excited.
Wichtig ist dabei, dass die Umlenkrolle 7, die im Betrieb starr angeordnet ist, im Leertrum 1a des Umschlingungsmittels angeordnet ist (Leertrum ist dabei bezogen auf den normalen Motorbetrieb, wenn die Kurbelwelle das antreibende Organ ist, zu verstehen), da auf diese Art und Weise während des Hauptbetriebs, also während der Hauptdauer des Motorbetriebs, nur geringe Belastungen auf die Umlenkrolle 7 einwirken, sodass deren Wälzlager kostengünstiger dimensioniert werden kann und wodurch auch die Riemenlebensdauer wegen der geringeren Spannbelastung steigt. Wie man aus der Figur erkennt, sind die Riementrumlängen jeweils zwischen den tangentialen Einlaufpunkten des Um- schlingungstriebs zwischen Kurbelwelle und Umlenkrad 7 sowie zwischen Umlenkrad 7 und Startergenerator 5 unterschiedlich um das Auftreten von Resonanzschwingungen zu vermeiden.It is important that the guide roller 7, which is rigidly arranged during operation, is arranged in the slack side 1a of the belt (slack side is based on the normal engine operation when the crankshaft is the driving member to understand), as in this way and Way during the main operation, ie during the main period of engine operation, only small loads on the guide roller 7 act, so that their rolling bearing can be dimensioned cheaper and thus the belt life increases because of the lower clamping load. As can be seen from the figure, the Riementrumlängen are each between the tangential inlet points of Umslinglingstriebs between the crankshaft and diverter 7 and between diverter 7 and starter generator 5 different to avoid the occurrence of resonant vibrations.
Die gezeigte Positionierung der Umlenkrolle ist für das Erreichen einer langen Systemlebensdauer wesentlich besser als eine Anordnung, bei der die Umlenkrolle zwischen Startergenerator 5 und Klimakompressor oder zwischen Klimakompressor und Kurbelwelle angeordnet wäre. The positioning of the pulley shown is much better for achieving a long system life than an arrangement in which the pulley between starter generator 5 and air conditioning compressor or between air compressor and crankshaft would be arranged.
Bezugszahlenreference numerals
1 Umschlingungsmittel1 wrap around
1a Leertrum des Umschlingungsmittels1a empty strand of the belt
2 Antriebsrad2 drive wheel
3 Umlaufrichtung3 circulation direction
4 Rad des Startergenerators 5 Startergenerator4 wheel of the starter generator 5 starter generator
6 Rad des Klimakompressors6 wheel of air conditioning compressor
7 Umlenkrolle 7 pulley

Claims

Patentansprüche claims
1. Zugmitteltrieb für einen Verbrennungsmotor mit einem die Kurbelwelle, einen, vorzugsweise als Spanneinrichtung verwendeten, Startergenerator, einen Klimakompressor und eine Umlenkrolle umschlingenden Um- schlingungstrieb, dadurch gekennzeichnet, dass die Umlenkrolle im Leertrum zwischen Kurbelwelle und Startergenerator angeordnet ist.1. traction drive for an internal combustion engine with a crankshaft, a, preferably used as a tensioning device, starter generator, an air compressor and a pulley encircling Umlingling drive, characterized in that the deflection roller is arranged in the slack side between the crankshaft and starter generator.
2. Zugmitteltrieb nach Anspruch 1 , dadurch gekennzeichnet, dass die Umlenkrolle asymmetrisch angeordnet ist derart, dass die Riementrumlängen zu den benachbarten Aggregaten ungleich sind.2. Traction drive according to claim 1, characterized in that the deflection roller is arranged asymmetrically such that the Riementrumlängen to the adjacent units are unequal.
3. Zugmitteltrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Umlenkrolle einen Durchmesser aufweist, der größer als 60 mm, vorzugsweise größer als 70 mm, ist.3. traction drive according to claim 1 or 2, characterized in that the deflection roller has a diameter which is greater than 60 mm, preferably greater than 70 mm.
4. Zugmitteltrieb nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Umlenkrolle so positioniert ist, dass der Umschlingungs- winke! α am Startergenerator α > 160°, vorzugsweise α > 180° ist. 4. traction drive according to one of claims 1 to 3, characterized in that the deflection roller is positioned so that the wrap-winke! α at the starter generator α> 160 °, preferably α> 180 °.
PCT/EP2005/012152 2005-01-14 2005-11-12 Positioning of a deflection roller in a traction mechanism drive comprising a belt-driven starter generator WO2006074743A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510001800 DE102005001800A1 (en) 2005-01-14 2005-01-14 Positioning of a pulley with traction drive with belt-driven starter generator
DE102005001800.9 2005-01-14

Publications (1)

Publication Number Publication Date
WO2006074743A1 true WO2006074743A1 (en) 2006-07-20

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PCT/EP2005/012152 WO2006074743A1 (en) 2005-01-14 2005-11-12 Positioning of a deflection roller in a traction mechanism drive comprising a belt-driven starter generator

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DE (1) DE102005001800A1 (en)
WO (1) WO2006074743A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216420A (en) * 2013-04-26 2013-07-24 兴宁市洪才电镀废水处理设备有限公司 Drawing force type air compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11190222A (en) * 1997-12-26 1999-07-13 Denso Corp Belt transmission system for internal combustion engine
DE19854948A1 (en) * 1998-11-27 2000-05-31 Schaeffler Waelzlager Ohg Arrangement for starting engine, generating electrical energy has tension drive containing idler on engine end remote from flywheel, rotor drive shaft parallel to crankshaft, connected to gearbox
DE19949931A1 (en) * 1999-10-16 2001-04-05 Daimler Chrysler Ag Procedure for starting internal combustion engine entails using electric machine to move crankshaft to unstable angular position before start process commences
JP2001107827A (en) * 1999-10-07 2001-04-17 Toyota Motor Corp Starting device and starting method for internal combustion engine
DE10044125A1 (en) * 2000-09-06 2002-03-14 Schaeffler Waelzlager Ohg Tension system for traction mechanism drive has hydraulic and mechanical tension units, which include damping units for damping adjustment movement
DE10044645A1 (en) * 2000-09-08 2002-03-21 Schaeffler Waelzlager Ohg Traction drive, especially for driving internal combustion engine units, has arrangement for demand regulated setting of tension consisting of unit with housing with limited rotation and pulley
WO2003067123A2 (en) * 2002-02-08 2003-08-14 Dayco Products, Llc Offset starter generator drive utilizing a fixed-offset dual-arm pivoted tensioner
WO2003078865A1 (en) * 2002-03-15 2003-09-25 The Gates Corporation Initial belt tensioner
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
WO2004005681A1 (en) * 2002-07-05 2004-01-15 Ina-Schaeffler Kg Tensioning system for a flexible drive
US20040084008A1 (en) * 2002-11-01 2004-05-06 Alexander Serkh Damped accessory drive system including a motor/generator
WO2004083682A1 (en) * 2003-03-20 2004-09-30 Ina-Schaeffler Kg Power transmission belt drive
WO2005061927A1 (en) * 2003-12-11 2005-07-07 Schaeffler Kg Tensioning system for a flexible drive

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11190222A (en) * 1997-12-26 1999-07-13 Denso Corp Belt transmission system for internal combustion engine
DE19854948A1 (en) * 1998-11-27 2000-05-31 Schaeffler Waelzlager Ohg Arrangement for starting engine, generating electrical energy has tension drive containing idler on engine end remote from flywheel, rotor drive shaft parallel to crankshaft, connected to gearbox
JP2001107827A (en) * 1999-10-07 2001-04-17 Toyota Motor Corp Starting device and starting method for internal combustion engine
DE19949931A1 (en) * 1999-10-16 2001-04-05 Daimler Chrysler Ag Procedure for starting internal combustion engine entails using electric machine to move crankshaft to unstable angular position before start process commences
DE10044125A1 (en) * 2000-09-06 2002-03-14 Schaeffler Waelzlager Ohg Tension system for traction mechanism drive has hydraulic and mechanical tension units, which include damping units for damping adjustment movement
DE10044645A1 (en) * 2000-09-08 2002-03-21 Schaeffler Waelzlager Ohg Traction drive, especially for driving internal combustion engine units, has arrangement for demand regulated setting of tension consisting of unit with housing with limited rotation and pulley
WO2003067123A2 (en) * 2002-02-08 2003-08-14 Dayco Products, Llc Offset starter generator drive utilizing a fixed-offset dual-arm pivoted tensioner
WO2003078865A1 (en) * 2002-03-15 2003-09-25 The Gates Corporation Initial belt tensioner
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
WO2004005681A1 (en) * 2002-07-05 2004-01-15 Ina-Schaeffler Kg Tensioning system for a flexible drive
US20040084008A1 (en) * 2002-11-01 2004-05-06 Alexander Serkh Damped accessory drive system including a motor/generator
WO2004083682A1 (en) * 2003-03-20 2004-09-30 Ina-Schaeffler Kg Power transmission belt drive
WO2005061927A1 (en) * 2003-12-11 2005-07-07 Schaeffler Kg Tensioning system for a flexible drive

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 12 29 October 1999 (1999-10-29) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 21 3 August 2001 (2001-08-03) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216420A (en) * 2013-04-26 2013-07-24 兴宁市洪才电镀废水处理设备有限公司 Drawing force type air compressor
CN103216420B (en) * 2013-04-26 2015-04-15 兴宁市洪才电镀废水处理设备有限公司 Drawing force type air compressor

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