Schaeffler Technologies Ag & Co .kg

Marco Hildebrand

Daniel Heise

Jürgen Weber

Mike Kohrs

Rainer Ottersbach

Jochen Thielen

Jens Schäfer

Jens Schaefer

Bastian Hain

A harmonic drive () comprises three connection elements (), namely an input element (), an output element () and an adjusting element (), and an anti-twist mechanism () operates between the connection elements (), the anti-twist mechanism comprising an anti-twist element (), which is concentric to the connection elements () and interlockingly cooperates with one of the connection elements () and frictionally cooperates with one other connection element ().

Harmonic drive

A strain wave gear, in particular for an electromechanical camshaft adjuster, comprises a housing element, an internally toothed drive element connected thereto in a rotationally fixed manner, an elastic, externally toothed gear element, and an internally toothed output element. The drive element has positive locking elements with which it is connected to the housing element.

Strain wave gear

A harmonic drive including a housing component () and a drive element () which is held on the housing component, can be deformed by a wave generator (), is in the form of a flanged bushing and has a toothing region () having a cylindrical basic shape and a disc section () which adjoins the toothing region (). Adjoining the disc section () there is a bushing section () which is concentric to the toothing region (), overlaps the latter in the axial direction and is held interlockingly between a cylindrical edge section (), which is thick-walled in comparison with the bushing section (), of the housing component () and an intrinsically rigid component () which is likewise solid in comparison with the flanged bushing ().

A camshaft adjusting system () is provided for a first camshaft () and a second camshaft () which are arranged concentrically with respect to one another, the second camshaft () being arranged within the first camshaft (). A vane-cell type hydraulic camshaft adjuster () is configured for adjusting the first camshaft () and an electric camshaft adjuster () is configured for adjusting the second camshaft (). A front cover () which is fastened to a stator () of the hydraulic camshaft adjuster () and which closes off the camshaft adjuster () at a side facing away from the camshaft has an internal toothing () for supporting a flex pot () which is attached to the second camshaft () and which is designed for receiving torque from the electric camshaft adjuster (). A camshaft adjusting unit having the camshaft adjusting system () and two camshafts () is also provided.

Camshaft adjusting system with flex pot for decoupling of the adjustment ranges

This disclosure relates to a camshaft adjusting system for a motor vehicle, having an inner camshaft, and an outer camshaft, which is arranged coaxially with and radially outside the inner camshaft. The camshaft adjusting system further includes an input wheel, which is designed to introduce torque into the camshafts, a hydraulic camshaft adjuster, which acts on the outer camshaft to adjust the phase angle of the outer camshaft relative to the input wheel, and an electric camshaft adjuster, which acts on the inner camshaft to adjust the phase angle of the inner camshaft relative to the input wheel. The electric camshaft adjuster engages in the hydraulic camshaft adjuster at least partially in an axial direction.

Camshaft adjusting system having a hydraulic camshaft adjuster and an electric camshaft adjuster

A camshaft adjusting system () is provided for a first camshaft () and a second camshaft () which are arranged concentrically with respect to one another, the second camshaft being arranged inside the first camshaft. A hydraulic camshaft adjuster () of the vane-cell type is set up for the adjustment of the first camshaft, and an electric camshaft adjuster () is set up for the adjustment of the second camshaft. A rotor contact flange () of an output ring () of the electric camshaft adjuster is arranged radially inside a first cover () of the hydraulic adjuster, the output ring which is equipped for the transmission of torque to the second camshaft is arranged at least partially radially and axially inside a rotor () of the hydraulic camshaft adjuster. A camshaft adjusting unit is also provided having a camshaft adjusting system of this type and two camshafts.

Camshaft adjusting system having camshaft adjusters which are arranged radially and axially inside one another

A method for operating a camshaft adjuster, which includes an adjusting transmission with an input shaft, an output shaft connected in a non-rotatable manner with a camshaft, and an adjusting shaft, whereby the adjusting shaft is driven by an actuator, characterized by the fact that the actuator drives the adjusting shaft by overcoming a torque that is dependent on its angular position.

Camshaft adjuster and method for operating a camshaft adjuster

A camshaft adjusting device having improved lubricant management including adjusting gearing for adjusting the angular position of a camshaft is proposed, the adjusting gearing having an input shaft, which can be coupled to a crankshaft, an output shaft, which can be coupled to the camshaft and an adjusting shaft, which can be coupled to an actuator. The adjusting gearing defines a rotational axis and the gearing forms a gearing interior, in which the input shaft, the output shaft and the adjusting shaft are operatively interconnected. The camshaft adjusting device has a lubricant supply for supplying the gearing interior with a lubricant and the lubricant supply is designed to form a lubricant sump in the gearing interior, the sump being radially outwards situated relative to the rotational axis.

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Nuremberg, Germany

Marco Hildebrand