Schaeffler Technologies Ag & Co .Kg

Ina Walzlager Schaeffler Ohg

Other

Ina Schaeffler Kg

Thomas Ullein

Bolko Schuseil

Reinhard Koch

Rainer Fuhrmann

Dieter Schmidt

Rudolf Wimmer

Gregory Cowen

Narendra Anne

Elaine Monsy

Matthias Goeb

Jeff Hewitt

Racine Thiam

Hermann Stief

Mona Huss

A hydraulic tensioning device for a chain drive of an internal combustion engine, having a receptacle and having a tensioning piston which is guided in displaceable fashion in a cylindrical hollow space of the receptacle and which has a piston hollow space, wherein the piston hollow space together with the cylindrical hollow space of the receptacle forms a pressure chamber, and having a pressure relief valve unit arranged in the piston hollow space. The pressure relief valve unit is a preassembled structural unit and comprises a spring, a closing body and a valve seat and also a valve receptacle which surrounds the valve seat in a first subsection, wherein the valve receptacle forms an interference fit with the valve seat, and wherein the valve receptacle or the valve seat in a second subsection form an interference fit with the inner shell surface of the tensioning piston.

Tensioning device for a chain drive

A device for tensioning a roller chain in a chain drive system is disclosed. The device includes a floating shoe with a surface upon which the chain may slide and a housing. A tension force provided by a tension mechanism is directed from the housing to the floating shoe in an outward direction with respect to the path of the roller chain. A retention feature limits the distance the floating shoe may travel with respect to the housing.

Hydraulic tensioning device for an engine

A tensioning device () for tensioning a traction mechanism of a traction mechanism drive, including a housing (), a piston () that is mounted such that the piston can be displaced in an axial direction inside the housing (), and a transport securing element (), which in at least one transport position of the tensioning device () is arranged in the housing () transversely to the piston () and in abutment with the piston () such that a displacement of the piston () in at least one first axial direction is blocked. The transport securing element () is provided with a support portion (), wherein in the transport position at least one first web area () of the support portion () is in abutment with one end face () of the piston (), and an additional web area () of the support portion () extending in an axial direction away from the first web area () is supported in the housing (), at least in a radial direction.

Tensioning device having a transport securing concept

A preassembled traction mechanism drive having at least two drive wheels () around which an endless traction mechanism () is wrapped, and a tensioning device () that has a housing () and is supported on the internal side of the endless traction mechanism (). In the housing (), at least two fixation elements () are provided that are fixedly connected to the housing () and that fix the drive wheels (), around which the endless traction mechanism () is wrapped, at an operational distance from one another.

Preassembled traction mechanism drive

A tensioning device for a traction mechanism drive. The tensioning device includes a tensioning piston which is mounted in an axially movable manner and provided with an attachment shaft facing the traction mechanism. The tensioning device also includes a tensioning shoe formed of a polymer plastic and mounted on the attachment shaft via a support hole, and a disk-shaped metallic support element which is fixed to the attachment shaft via its support hole. The force transmission between the tensioning shoe () and the tensioning piston () is improved by pre-mounting the support element () in or on the tensioning shoe () in a positively or non-positively fixed manner, and the support element () is connected to the tensioning piston (), in the mounted state, via a press fit between the support hole () and the attachment shaft (), and contacts a shoulder () of the tensioning piston ().

Tensioning device pertaining to a traction mechanism drive

A tensioning device for compensating for elongations of the traction mechanism, in particular a chain or a timing belt, of a power transmission drive, in particular on an internal combustion engine, having a tensioning mechanism, in particular a tensioning rail, a sliding shoe or tensioning arm having a tensioning roller. A tensioning element is disposed between a support surface on the tensioning mechanism and a support, in particular on the internal combustion engine, and the support surface on the tensioning mechanism is made of a material which has a high strength.

Tensioning rail for power transmission drives on internal combustion engines

A compensating drive for driving a compensating shaft of an internal combustion engine, comprising a toothed belt or a chain, which connects a crankshaft driven wheel of the internal combustion engine to a drive wheel on the compensating shaft or shafts, in which case the crankshaft driven wheel () and/or the drive wheel or wheels () of the compensating shafts () are shaped to be non-circular in such a way that they transmit to the drive a variability, which at least partially compensates the vibrations produced during the rotation of the crankshaft ().

Compensating shaft drive

In a chain drive for an internal combustion engine, said chain drive comprising a driving wheel (), a driven wheel (), an endlessly circulating chain () that connects the driving wheel () and the driven wheel (), a chain tensioner () acting on the slack strand () of the chain (), and an additional tensioning device () that is loaded by a spring () and acts on the tight strand () of the chain () while being arranged for pivoting, a further driven wheel () is installed in the tight strand () of the chain drive and is used as a driving wheel for a rotatably mounted compensating shaft for offsetting free forces and moments that occur during operation of the internal combustion engine.

Chain drive for an internal combustion engine

A tensioning device for a chain drive of an internal combustion engine, having a support member () which is pivotally mounted thereupon and is axially snapped onto and retained on a bearing journal () of the support member () via a bearing lug (). The support member () is formed as a deep-drawn sheet metal component and is formed in a single piece with the bearing journal (). The bearing journal () is provided with a cup-shaped hollow form. The tensioning rail () is axially secured to the support member () by a wrap-around ().

Tensioning device for an internal combustion engine

A tensioner for a chain, includes a tensioner piston bearing upon a chain and guided by a cylinder for movement in the direction of the chain. The cylinder and the piston define a pressure chamber for receiving hydraulic fluid, wherein hydraulic fluid is able to escape from the pressure chamber via a leakage gap. A control member is provided to at least reduce the leakage gap in size, when a pressure in the pressure chamber increases.

Chain tensioner

A tensioning device for tensioning a traction medium, especially a chain, is provided. The tensioning device includes a supporting body element attachable to a third object and at least one tensioning track capable of being applied against the traction medium. The supporting body element and the tensioning track being joined together as one piece.

Tensioning device for tensioning a traction medium

A tensioning device for a chain ( ) comprising a housing ( ), said housing ( ) carries a first sliding shoe ( ) for contact with a first side ( ) of the chain ( ) with the tensioning device further comprising a tensioning piston ( ) that is guided on the housing ( ) and comprises a second sliding shoe ( ) for contact with a second side ( ) of the chain ( ) whereby in an economic and simple-to-manufacture tensioning device, the housing ( ) and the first sliding shoe ( ) are made in one piece with each other.

Tensioning device for chains

A tensioning device for traction device, particularly chains, comprises an element, particularly a tension shoe ( ) that tensions the traction device. The tension shoe ( ) is mounted on a pivot axle ( ) for pivoting relative to a base element ( ), and a spring element ( ) acting between the tension shoe ( ) and the base element ( ) urges the tension shoe ( ) against the traction device. To simplify the assembly of the tension shoe ( ) and the base element ( ), it is proposed that one of the elements ( ) comprises at least one mounting eye ( ) having a radial mounting aperture ( ) for radially receiving the pivot axle ( ) arranged on the respective other element ( ).

A chainwheel ( ) of a control mechanism of an internal combustion engine, said chainwheel being formed in one part or a plurality of parts from at least one hub ( ), a toothed rim ( ) and a wall ( ) connecting the hub ( ) to the toothed rim ( ), provided with at least one means for the damping of vibrations and noises which consists of a noise-damping material.

Chain wheel with damping

A tensioner for a driving member includes a piston (,) guided slidably in a housing (,) and spring-loaded against the driving member. The tensioner further includes a damping device (,) for damping movements of the piston through discharge of hydraulic fluid, such as engine oil, from a pressure chamber (,) via at least one leak gap (,) of the damping device (,). A simple and economic implementation of the leak gap is assured by arranging a rotationally symmetrical body such as a cylinder (,) in a receptacle (,) of the damping device (,), so that the leak gap (,) is formed between the wall (,) of the receptacle and the peripheral surface of the rotationally symmetrical body (,).

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Frensdorf, Germany

Thomas Ullein