WO2005083297A1 - Chaine d'entrainement, en particulier chaine d'entrainement de commande, conçue pour des moteurs a combustion interne, en particulier des moteurs diesels - Google Patents

Chaine d'entrainement, en particulier chaine d'entrainement de commande, conçue pour des moteurs a combustion interne, en particulier des moteurs diesels Download PDF

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Publication number
WO2005083297A1
WO2005083297A1 PCT/EP2005/001516 EP2005001516W WO2005083297A1 WO 2005083297 A1 WO2005083297 A1 WO 2005083297A1 EP 2005001516 W EP2005001516 W EP 2005001516W WO 2005083297 A1 WO2005083297 A1 WO 2005083297A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive chain
chain according
drive
chain
steel
Prior art date
Application number
PCT/EP2005/001516
Other languages
German (de)
English (en)
Inventor
Steffen Kirchner
Hermann Sessner
Original Assignee
Joh. Winklhofer & Soehne Gmbh Und Co.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 Joh. Winklhofer & Soehne Gmbh Und Co.Kg filed Critical Joh. Winklhofer & Soehne Gmbh Und Co.Kg
Publication of WO2005083297A1 publication Critical patent/WO2005083297A1/fr

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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • 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
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a drive chain, in particular timing drive chain, for internal combustion engines, in particular for diesel engines, with inner and outer chain links connected via a chain link in each case.
  • the invention further relates to a timing chain drive.
  • Such drive chains are well known in practice. Such drive chains are subject to high demands in use. On the one hand, they are operated at high speed and at the same time high forces and high loads are exerted on them. In addition, the automotive industry is demanding ever smaller chains, and therefore increasingly narrow angle conversions, to ensure the implementation of smaller engines. At the same time, since the drive chains are a mass-produced product that is installed in a large number of motor vehicles, industry demands that production be as cost-effective as possible and that material costs be low.
  • the surroundings of the drive chain must be taken into account on the one hand, since the oil used for lubrication and the combustion gases in the engine compartment are in direct contact with the drive chain.
  • the oils are provided with a wide variety of additives that can affect the drive chain, at the same time the oil thickens during operation and becomes more aggressive.
  • the lifespan of a drive chain in use is primarily limited by the chain elongation that occurs.
  • the choice of material in the joint area, and in particular in the contact area between the sleeve and the bolt is of particular importance, since various types of wear occur in this area.
  • the object of the present invention is therefore to provide a material, in particular for the contact surface of chain links, which is distinguished by a significantly increased wear resistance.
  • a material is used at least in the contact area of the chain link, selected from the group of tribooxidation and / or tribocorrosion resistant materials that are chemically resistant and at least have a hard surface layer or with these are provided.
  • the professional world has focused on the improvement of wear resistance on the optimization of mechanical properties, in particular the surface hardness or surface profile. It was completely ignored that the oil changes significantly during operation. For example, the acid number of the engine oil can increase sharply due to oxidation, nitration and sulfation.
  • the present inventors have now found that there is a connection between the wear of the drive chain and the oil used. Increased wear is particularly evident in the low-viscosity oils that have been increasingly used in recent times. These low-viscosity oils have a lower viscosity, are provided with additional additives and have poorer lubricating properties when used.
  • a new oil typically has a TAN number of 3.5. This TAN number changes continuously when used in a vehicle. In this context, a TAN number of approx. 4.5 - 5.0 is already classified as critical, with a TAN number of 6-7 an extreme value has already been reached. If the TAN number exceeds the measure for the base content, i.e. TAN> TBN, corrosion occurs.
  • the materials are selected so that they have sufficient chemical resistance and are at least provided with a hard surface layer, or in which the hardness of the surface layer is changed by suitable measures.
  • the material can advantageously be a martensitic and / or precipitation hardened stainless steel.
  • Such a material fulfills all requirements for the chemical resistance of the material as well as the corrosion resistance, whereby the material can also be manufactured inexpensively.
  • This material can also be additionally heat-treated to set a desired structure. The aim of such an additional treatment is primarily to achieve a high surface hardness.
  • the material has a high chromium content, preferably more than 10%. This ensures sufficient material strength.
  • the material can particularly preferably be selected according to the type of steel from the group of martensitic and precipitation-hardening stainless steels or ferritic stainless steels, which are specified in DIN 10088-1, Tables 1 and 2 and / or in a material data sheet for aerospace ( WL) are called. In practice, these materials have proven to be particularly suitable.
  • the material can be a low-alloy steel with a dense surface coating with high hardness and corrosion resistance.
  • a material has also proven to be suitable for exhibiting the required properties.
  • the surface coating can be achieved by suitable methods.
  • the method can preferably be selected from the group comprising PVD, CVD, diffusion, edge embroidery without nitride excretion and similar processes.
  • the aforementioned methods are methods which are well known in the art and can therefore be carried out without any problems, so that the drive chain can also be easily produced here.
  • a corrosion-resistant material can be used in which the hardness of the surface layer is increased by physical surface hardening processes.
  • a corresponding material is achieved by an additionally carried out method which is easy to carry out in practice. It is particularly important to select a process that does not affect the corrosion resistance of the material.
  • a preferred method for increasing the hardness of the surface layer can be shot peening.
  • Steels which are mentioned in DIN 10088-1, Tables 1 and 2 or in WL 1.4564 can advantageously be used as the material.
  • Steels 1.4021 or 1.4122 or 1.4564 of DIN 10088-1 can preferably be used. These materials have proven to be particularly suitable in practice. It has also been shown that shot peening can be carried out on these materials without impairing the corrosion properties of the material.
  • the present invention provides various possibilities for using a corresponding material, so that a corresponding material can be produced in a simple manner depending on the area of use.
  • Each chain link can advantageously comprise a pin bolt of an outer chain link and a sleeve of an adjacent inner chain link.
  • a corresponding structure of the chain has proven itself for a long time.
  • the material can advantageously be used at least as a surface layer of the sleeve, ie the layer which is in direct contact with the pin bolt. In this way, it is possible, in particular, to design the contact surface which is subject to the greatest wear and tear, and to be particularly wear-resistant. Furthermore, the entire sleeve can be made from the material.
  • the bolt can preferably be an inch-chromed and / or vanaded bolt made of suitable steel with a high C content.
  • the pin can be a pin made of ferritic stainless or martensitic and precipitation-hardening stainless steel.
  • the bolt can advantageously be made of steel 1.4122 or 1.4564 of DIN 10088-1. These materials have proven particularly useful in practice, especially in combination with one of the aforementioned sleeve materials.
  • the invention further relates to a timing chain drive for an internal combustion engine, in particular a diesel engine, with a drive chain as described above, at least two sprockets and a lubricating oil, the lubricating oil being a low-viscosity oil.
  • the drive chain described can be used in a timing chain drive for an internal combustion engine, in particular a diesel engine, which uses a low-viscosity oil for chain lubrication.
  • Figure 2 shows the drive chain of Figure 1 in the direction of travel in a sectional plan view.
  • the drive chain shown in the drawing consists of outer chain links 1, inner chain links 2 and the chain links 3 connecting the inner chain links and outer chain links.
  • Each chain link 3 comprises a pin bolt 4 and a sleeve 5.
  • the outer chain links 1, which serve as guide links are pressed onto the pin bolts 4.
  • the pin bolt 4 can each extend a predetermined distance over the outer surface of the outer chain link.
  • the inner chain links 2 are arranged offset to the outer chain links 1 on the inner surface of the outer chain links 1.
  • Two inner chain links 2 are connected to each other via a sleeve 5, the inner chain links being pressed onto the sleeves.
  • the pin bolts 4 extend through the sleeve and are movably supported in the sleeve, so that the inner chain links are held movably relative to the outer chain links.
  • the sleeve 5 is either made as a whole from the material according to the invention, or according to another embodiment, the sleeve 5 can also be on its inner surface, i.e. the surface in contact with the pin bolt 4 may be provided with an additional coating 6, which consists of the material according to the invention and thus provides the necessary properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une chaîne d'entraînement, en particulier une chaîne d'entraînement de commande, conçue pour des moteurs à combustion interne, en particulier des moteurs diesels, comprenant des chaînons internes (2) et externes (1) respectivement reliés par l'intermédiaire d'un joint de chaîne (3). Un matériau est utilisé dans la zone de contact de ce joint de chaîne (3), ce matériau étant sélectionné dans le groupe des matériaux qui résistent à la tribooxydation et/ou à la tribocorrosion, qui sont chimiquement stables et qui comportent au moins une couche superficielle dure ou sont recouverts de celle-ci. Cette invention se rapporte en outre à une chaîne d'entraînement de commande.
PCT/EP2005/001516 2004-02-18 2005-02-15 Chaine d'entrainement, en particulier chaine d'entrainement de commande, conçue pour des moteurs a combustion interne, en particulier des moteurs diesels WO2005083297A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004002532U DE202004002532U1 (de) 2004-02-18 2004-02-18 Antriebskette, insbesondere Steuertriebskette, für Verbrennungsmotoren, insbesondere Dieselmotoren
DE202004002532.9 2004-02-18

Publications (1)

Publication Number Publication Date
WO2005083297A1 true WO2005083297A1 (fr) 2005-09-09

Family

ID=34745530

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/001516 WO2005083297A1 (fr) 2004-02-18 2005-02-15 Chaine d'entrainement, en particulier chaine d'entrainement de commande, conçue pour des moteurs a combustion interne, en particulier des moteurs diesels

Country Status (2)

Country Link
DE (1) DE202004002532U1 (fr)
WO (1) WO2005083297A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106195122A (zh) * 2015-04-29 2016-12-07 舍弗勒技术股份两合公司 链条、包括链条的内燃机及制造链条的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3791088A4 (fr) * 2018-05-07 2022-01-26 U.S. Tsubaki Holdings, Inc. Chaîne à rouleaux en acier inoxydable à durabilité accrue

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912551A (en) * 1972-10-31 1975-10-14 Kumakichi Araya Pin for a steel chain
JPS566939A (en) * 1979-06-25 1981-01-24 Daido Kogyo Co Ltd Manufacture of bearing member for chain
US20020049107A1 (en) * 2000-07-20 2002-04-25 Ledvina Timothy J. Small pitch silent chain with freely rotating pins having wear resistant coating
JP2003222199A (ja) * 2002-01-29 2003-08-08 Sugiyama Chain Seisakusho:Kk スチールチェーン
US20030192299A1 (en) * 2002-04-10 2003-10-16 Arimasa Kaga Wear resistant chain
JP2003322222A (ja) * 2002-05-07 2003-11-14 Sugiyama Chain Seisakusho:Kk ステンレスチェーン

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912551A (en) * 1972-10-31 1975-10-14 Kumakichi Araya Pin for a steel chain
JPS566939A (en) * 1979-06-25 1981-01-24 Daido Kogyo Co Ltd Manufacture of bearing member for chain
US20020049107A1 (en) * 2000-07-20 2002-04-25 Ledvina Timothy J. Small pitch silent chain with freely rotating pins having wear resistant coating
JP2003222199A (ja) * 2002-01-29 2003-08-08 Sugiyama Chain Seisakusho:Kk スチールチェーン
US20030192299A1 (en) * 2002-04-10 2003-10-16 Arimasa Kaga Wear resistant chain
JP2003322222A (ja) * 2002-05-07 2003-11-14 Sugiyama Chain Seisakusho:Kk ステンレスチェーン

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0050, no. 50 (M - 062) 9 April 1981 (1981-04-09) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106195122A (zh) * 2015-04-29 2016-12-07 舍弗勒技术股份两合公司 链条、包括链条的内燃机及制造链条的方法
CN106195122B (zh) * 2015-04-29 2020-02-18 舍弗勒技术股份两合公司 链条、包括链条的内燃机及制造链条的方法

Also Published As

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