Aft Atlas Fahrzeugtechnik Gmbh

Ina Schaeffler Kg

Markus Wilke

Dirk Neubauer

Detlef Axmacher

Frank Pachan

Massimiliano Gasparro

Lars Pfutzenreuter

Uwe Finis

Lars Pfuetzenreuter

Lars Pfützenreuter

Massimilliano Gasparro

Kave Kianer

Marco Rohe

A method for adjustment of the relative angle of rotation between a camshaft and a crankshaft in an internal combustion engine through an electromechanical phase adjuster is provided. The invention provides a rapid and precise adjustment behavior. To that end, a deviation of the adjustment speed (&#x394;&#x3a9;) between a desired adjustment speed (&#x3a9;) and an actual adjustment speed (&#x3a9;) is calculated from at least one measurement parameter in a second control loop cascaded below the first control loop. An output parameter is calculated dependent on the deviation of the adjustment speed (&#x394;&#x3a9;) through an adjustment speed adjuster () cascaded below the angle of rotation adjuster (), with the output parameter being used to adjust the angle of rotation (&#x3a6;) using an electromechanical actuator (). The relative angle of rotation can be rapidly and precisely adjusted by adjusting the adjustment speed. A phase adjuster for controlling the relative angle of rotation is also provided.

Method for adjusting an angle of rotation, and phase displacement device for carrying out said method

A phase displacement device () having a drive () with a drive shaft () and a transmission () for displacing the phase between a camshaft () and a crankshaft () is provided. The phase displacement device () has a sensor device () with which the rotational speed or the position of a component () of the phase displacement device () is measured. In this way, a higher resolution is achieved with respect to the position of the camshaft.

Phase displacement device

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

A gear arrangement has two turntables nested or arranged concentrically in one another, and interconnected with one another via a swashplate. The gear arrangement preferably is used for adjusting the angle of rotation of the camshaft relative to the angle of rotation of the crankshaft of an internal combustion engine to affect the control times of the charge-cycle valves of the engine. The swashplate is connected with the first turntable formed as a camshaft gear via at least one pin, and the swashplate is connected with the camshaft via the second turntable by means of a gear ring.

Gearbox comprising two rotatable disks which are arranged inside each other and are connected by means of a swash plate

A control device and method for adjusting the angular velocity ratio (&#x3c9;(t)/&#x3c9;(t)) between a camshaft and a crankshaft is provided. Various control devices and methods for rotating the camshaft relative to the crankshaft provide a drive which may advance and retard the camshaft in comparison to the crankshaft. Previous systems have the disadvantage that either two drives in different directions are necessary for each actuation direction or the drive must have right-handed rotation and left-handed rotation. In the control device and the method according to the invention, the advancing of the camshaft is achieved by a drive in the running direction of the camshaft and the retarding is achieved by a braking device. It has been shown to be especially advantageous if an electric motor in two quadrant mode is used as the drive, which may then also be used as the braking device. Such a control device and method are required for setting the control times in internal combustion engines.

Control device and method for adjusting the angular velocity ratio between a camshaft and 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.

Growing community of inventors

Nurtingen, Germany

Markus Wilke