Schaeffler Technologies Ag & Co .kg

Ina Schaeffler Kg

Robert Boschgmbh

Rudolf Eydam

Rainer Ottersbach

Jochen Auchter

Jens Hoppe

Andreas Strauss

Harald Elendt

Dirk Heintzen

Oliver Gerundt

Ingo Drewe

Viktor Lichtenwald

Ianislav Krastev

Michael Weiss

Ulrich Wierl

Ralf Diekmann

Michael Klimenko

Daniel Schwartz

Carolin Breitinger

A timing adjustment device with axially joined components, clamped by a camshaft central screw on a hub element which maintains the required peripheral position of these components relative to one another within a narrow tolerance range. On a disk element of the timing adjustment device an insert section is formed, which can be inserted into a recess formed in the hub element and, in the region of the insert section, at least one anchoring structure is formed, through which the insert section is anchored on a counter-structure, which is provided by the hub element.

Timing adjustment device for an internal combustion engine

An internal-combustion engine with a device for adjusting the rotational angle (camshaft adjuster ()) of a camshaft () relative to a crankshaft is provided. The device comprises a driving wheel () connected in a rotationally locked way to the crankshaft, a driven part () connected in a rotationally locked way to the camshaft (), and an adjusting mechanism, with which the phase position between the crankshaft and camshaft () can be set and maintained in a certain range of angles. A reduction of the required axial structural space of the camshaft adjuster () and the number of individual parts is achieved in that the driven part () is fixed to the camshaft () with a frictional, positive-fit, or interference-fit connection.

Camshaft adjuster

The invention relates to a device () for adjusting the camshaft of an internal combustion engine, which has an internal rotor () which can be adjusted rotationally in relation to an external rotor (), with the internal rotor () being secured to a camshaft () by means of a central screw (). In order to permit improved mounting of the device it is provided according to the invention for the internal rotor () and/or the external rotor () to have at least one recess () for the engagement of a mounting tool () by means of which the internal rotor () and the external rotor () can be secured fixed in terms of rotation. Furthermore, the invention relates to a mounting tool for mounting such a device.

Device for adjusting the camshaft of an internal combustion engine and a mounting tool

A device for changing the control times of gas-exchange valves in an internal combustion engine is provided, which includes a drive wheel () in driven connection with the crankshaft and a vane rotor () fixed with the camshaft. The drive wheel () has a hollow space, which is formed by a hollow cylindrical peripheral wall () and two lateral walls (), in which at least one hydraulic work chamber () is formed by at least two radial limit walls (), which is divided by at least one vane () into an A pressure chamber () and a B pressure chamber (). The vane rotor () can be coupled mechanically with the drive wheel () by a separate locking element (), that can be moved into a locked position within a receptacle () in the lateral walls () of the drive wheel (). The receptacle () is connected hydraulically to the A pressure chamber () via a pressure medium supply groove () provided in an inner surface of the lateral wall (), so that upon pressurization of the A pressure chamber (), the locking element () can move hydraulically into an unlocked position in the rotor hub () of the vane rotor (). According to the invention, a local stop () is arranged within the pressure medium supply groove () in the inner surface of the lateral wall (), through which a pressure medium supply to the receptacle () of the locking element () is possible only through a bypass () when the vane rotor () is in the base position.

Device for changing the control times of gas exchange valves in an internal combustion engine, in particular, a rotating piston adjustment device for angular adjustment of a camshaft relative to a crankshaft

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Geisfeld, Germany

Rudolf Eydam