Schaeffler Technologies Ag & Co .Kg

Ina Schaeffler Kg

Gregory Müller

Dirk Heintzen

Roger Meyer

Jeffrey Balko

A device () for changing the timing of an internal-combustion engine () is provided that has a camshaft adjuster (), which is supported on a non-rotating bearing journal (). A driving wheel () of the camshaft adjuster () is driven by a crank-shaft () via a first traction mechanism drive (). The rotation of the driving wheel () is transferred via an actuator () to a driven part (), which is arranged so that it can rotate relative to the driving wheel (). Second and third traction mechanism drives () create a drive connection between the driven part () and two camshafts ().

Device for changing the timing of an internal-combustion engine

An internal-combustion engine with a hydraulic device () for rotation angle adjustment of a camshaft () relative to a crankshaft is provided and includes a rotor with an impeller form (), which is rotationally fixed via a central fastener () to the camshaft, and a stator (), which rotates synchronously with a drive wheel () driven by the crankshaft, wherein on both sides of the impeller blades of the rotor, there are pressure chambers, which are each limited by radial walls of the stator () and can be filled with and emptied of hydraulic fluid via a hydraulic system, wherein the hydraulic fluid is guided, on one hand, via an annular gap () between rotor () and the central fastener () and, on the other hand, through generally axial and radial channels into the pressure chambers. Through the use of a rotor () with a groove () running in the circumferential direction and a ring shaped intermediate element () adapted to the device, the internal-combustion engine can be equipped with a device () for adjusting the rotation angle, for which the number and/or arrangement of the axial channels for supplying hydraulic fluid do not agree with those of the camshaft of the internal-combustion engine. This construction enables the use of the device () on many different internal-combustion engines, without expensive adaptations of the device ().

Growing community of inventors

Troy, MI, United States of America

Gregory Müller