Ina Schaeffler Kg

Schaeffler Technologies Ag & Co .kg

Ulrich Wierl

Rainer Ottersbach

Jochen Auchter

Mike Kohrs

Jens Hoppe

Andreas Strauss

Harald Elendt

Viktor Lichtenwald

Rudolf Eydam

Hermann Wiehl

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

A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and constructed to define with the rotor vanes the pressure chambers. The stator is made by a shaping process without material to effect a mass reduction. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

Internal combustion engine with hydraulic device for adjusting the rotation angle of a camshaft in relation to a crankshaft

A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and formed in single-piece construction with an end wall to thereby exhibit a pot-shaped structure. The pot is made without material removal from a sheet metal part and constructed to define with the rotor vanes the pressure chambers. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

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Mendorf, Germany

Ulrich Wierl