Entity

Time filter

Source Type

Gifhorn, Germany

Patent
IAV GmbH | Date: 2013-03-15

Internal combustion engine optimisation in which individual adjustment processes to be carried out to achieve optimal cooperation between the sensors, actuators, control device and internal combustion engine are started and carried out on the basis of the quality achieved for each of the individual adjustment processes in relation to one another, the ambient conditions of the internal combustion engine and the system states of the internal combustion engine in connection with a control program.


A device for a valve train for switching over the lift of gas-exchange valves of an internal combustion engine comprising a camshaft on which at least one cam carrier with at least three different cam profiles is mounted so as to be non-rotatable and axially movable. The device includes an adjustment shaft arranged parallel to the camshaft and on which a first transmission element is mounted so as to be non-rotatable and axially movable, the first transmission element having a guide unit, a housing-fixed first guide element operatively connected to the guide unit, a second guide element operatively connected, on the one hand, to the guide unit and, on the other hand, to the cam carrier via a second transmission element, the second transmission element being connected to the cam carrier so as to be axially unmovable, and a push element operatively connected to the first transmission element.


A device for a valve train for switching over the lift of gas-exchange valves of an internal combustion engine, the internal combustion engine including a camshaft on which at least one cam carrier with at least three different cam profiles is mounted so as to be torque-proof and axially movable. The device includes an adjustment shaft arranged parallel to the camshaft and on which a first transmission element is mounted so as to be torque-proof and axially movable, the first transmission element having a guide unit, a housing-fixed first guide element operatively connected to the guide unit, a second guide element that, on the one hand, is operatively connected to the guide unit and, on the other hand, to the cam carrier via a second transmission element, whereby the second transmission element is connected to the cam carrier so as to be axially immovable, and a push element.


A cylinder head of an internal combustion engine includes a camshaft configured to actuate gas-exchange valves of the internal combustion engine. The camshaft has two cam segments that are joined to each other in such a manner that the cam segments cannot rotate with respect to each other, but are moveable axially relative to each other. End faces of the bearing sites of the cam segments each have splines running radially along respective outer circumferential surfaces of the cam segments. A camshaft bearing has an inner bearing ring with splines being formed on an inner surface. The splines of the inner bearing ring completely penetrate the axial course of the inner surface and the splines of the adjacent cam segments intermesh with the splines of the inner bearing ring on both sides thereof such that the inner bearing ring forms a non-rotating connection between the camshaft segments.


An adjustment shaft actuator. The adjustment shaft actuator includes an adjustment shaft arranged parallel to a camshaft of a valve train and having a lever unit with a lever arm, a cam unit that has a cam and that is connected to the camshaft in a non-rotatable manner, whereby the lever unit is arranged so as to be axially movable on the adjustment shaft or the cam unit is arranged so as to be axially movable on the camshaft, and an adjustment unit provided in order to effectuate axial movement between the at least one lever unit and the at least one cam unit, by way of which the at least one lever arm can be brought into effective contact with the cam in order to bring about a rotation of the adjustment shaft by rotating the camshaft.

Discover hidden collaborations