Aft Atlas Fahrzeugtechnik Gmbh

Schaeffler Technologies Ag & Co .kg

Ina Schaeffler Kg

Lars Pfutzenreuter

Detlef Axmacher

Dirk Neubauer

Markus Wilke

Frank Pachan

Harald Elendt

Heiko Schmidt

Andreas Nendel

Mathias Boegershausen

Massimiliano Gasparro

Massimilliano Gasparro

Markus Schnepp

A valve drive of an internal combustion engine is provided, having a camshaft () which includes a carrier shaft () and a cam part (), which is arranged thereon in a rotationally fixed manner and displaceable between two axial positions and which has at least one cam group of directly adjoining cams () having different cam elevations and an axial gate () having two cam tracks () that extend axially along the circumference in opposing directions, and further having an actuating element () that can be coupled to the axial gate for displacing the cam part in the direction of both cam tracks. The cam tracks are arranged one behind the other in the circumferential direction of the axial gate ().

Valve drive of an internal combustion engine

A device for variably setting the control times of gas exchange valves of an internal combustion engine is provided having a hydraulic actuator () with two reciprocally operating pressure chambers () and with a pressure medium supply device () for supplying and withdrawing pressure medium to or from the pressure chambers (). The device () also includes at least one rotation angle limiting device () that in an unlocked state does not limit the phasing of the output element () in reference to the input element () but, in a locked state, limits it to a defined angular range or to a defined angle, with the rotation angle limiting device () being switched from the locked to the unlocked state by pressure medium being supplied. A control line () is provided for supplying and withdrawing pressure medium to or from the rotation angle limiting devices (), with the control line () not communicating with the pressure medium supply device (). A control valve () controls the supply and withdrawal of pressure medium to and from the control line (). The control valve () comprises a hydraulic actuating mechanism () that is subjected to the action of pressure medium from the pressure medium supply device ().

Device for variably setting the control times of gas exchange valves of an internal combustion engine

An arrangement for adjusting the angle of rotation of a camshaft () relative to a crankshaft is provided. The arrangement requires many components, which partially also require different operational conditions. The new arrangement is structured in a modular fashion, so that the components of the arrangement are no longer arranged inside a common housing, but rather are separately constructed according to their function and/or operational conditions, for example, they are used jointly by other control or adjustment devices. It is particularly advantageous that such arrangements can be produced in a reduced size and in a more cost effective manner and can be used for adjusting the valve play of internal combustion engines.

Arrangement for adjusting the angle of rotation of a camshaft relative to a crankshaft

The present invention relates to a control device for adjusting the angle of rotation of a camshaft in relation to the angle of rotation of a crankshaft, by means of a wobble plate mechanism situated between the camshaft and the crankshaft, in which mechanical means for limiting the adjustment of the angle of the angle of rotation are situated between the crankshaft and the camshaft.

Control device for adjusting the angle of rotation of a camshaft

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Werdohl, Germany

Lars Pfutzenreuter