Abstract: The invention relates to a method for operating an internal combustion engine with autoignition capability using a first, autoignitable fuel and a second, non-autoignitable fuel.

Abstract: A valve drive of an internal combustion engine is provided, having a camshaft (1) which includes a carrier shaft (2) and a cam part (3), 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 (5, 6) having different cam elevations and an axial gate (8) having two cam tracks (9, 10) that extend axially along the circumference in opposing directions, and further having an actuating element (11) 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 (8).

Abstract: A valve drive of an internal combustion engine is provided, having a camshaft (1) which includes a carrier shaft (2) and a cam part (3), 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 (5, 6) having different cam elevations and an axial gate (8) having two cam tracks (9, 10) that extend axially along the circumference in opposing directions, and further having an actuating element (11) 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 (8).

Abstract: A device for variably setting the control times of gas exchange valves of an internal combustion engine is provided having a hydraulic actuator (18) with two reciprocally operating pressure chambers (12, 13) and with a pressure medium supply device (32) for supplying and withdrawing pressure medium to or from the pressure chambers (12, 13). The device (1) also includes at least one rotation angle limiting device (24) that in an unlocked state does not limit the phasing of the output element (3) in reference to the input element (2) but, in a locked state, limits it to a defined angular range or to a defined angle, with the rotation angle limiting device (24) being switched from the locked to the unlocked state by pressure medium being supplied. A control line (19) is provided for supplying and withdrawing pressure medium to or from the rotation angle limiting devices (24), with the control line (19) not communicating with the pressure medium supply device (32).

Abstract: A device for variably setting the control times of gas exchange valves of an internal combustion engine is provided having a hydraulic actuator (18) with two reciprocally operating pressure chambers (12, 13) and with a pressure medium supply device (32) for supplying and withdrawing pressure medium to or from the pressure chambers (12, 13). The device (1) also includes at least one rotation angle limiting device (24) that in an unlocked state does not limit the phasing of the output element (3) in reference to the input element (2) but, in a locked state, limits it to a defined angular range or to a defined angle, with the rotation angle limiting device (24) being switched from the locked to the unlocked state by pressure medium being supplied. A control line (19) is provided for supplying and withdrawing pressure medium to or from the rotation angle limiting devices (24), with the control line (19) not communicating with the pressure medium supply device (32).

Abstract: An arrangement for adjusting the angle of rotation of a camshaft (5) 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.

Abstract: A control device and method for adjusting the angular velocity ratio (?N(t)/?K(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.

Abstract: 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.

Abstract: An arrangement for adjusting the angle of rotation of a camshaft (5) 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.

Abstract: A device for adjusting the phase position between a camshaft and a crankshaft is provided. A quick and precise electronic adjustment for mechanical adjustment devices for adjusting the phase position between a camshaft and a crankshaft have previously not been known. The adjustment device is a component of an electronic circuit, either automatically adjusting the desired phase position directly or indirectly via another parameter, with the circuit including at least one loop between the control device and the adjustment path, by which a quick and precise adjustment can be achieved. Such arrangements are needed for a quick and precise adjustment of the phase position of a camshaft in reference to a crankshaft in internal combustion engines.

Abstract: 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 rotation are situated between the crankshaft and the camshaft.

Abstract: A control device and method for adjusting the angular velocity ratio (?N(t)/?K(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.