Abstract: A drive arrangement for a motor vehicle flap including a gas pressure element, the gas pressure element has an outwardly sealed cylinder and a piston moveable in the cylinder interior along the cylinder axis and subdivides the cylinder interior into two sub-chambers, the gas pressure element has a first drive connection connected to the cylinder, and a second drive connection connected to the piston, the cylinder filled with a fluid and the piston has an overflow channel arrangement to create a balancing flow between the two sub-chambers to balance a pressure drop between the two sub-chambers. The piston is assigned a switchable valve arrangement which, depending on the pressure drop between the two sub-chambers, to create different through-flow states differing the cross section of the overflow channel arrangement. Upon exceeding a predetermined threshold for the pressure drop, the valve arrangement switches to change the cross section of the overflow channel arrangement.

Abstract: A drive assembly for a flap of a motor vehicle includes at least one motor drive and at least one gas pressure element having a cylinder and a piston. The piston divides the cylinder interior into two partial spaces and has a passage arrangement, through which a balancing flow between the two partial spaces arises when the piston moves. The gas pressure element has a first drive connection point connected to the cylinder and a second drive connection point connected to the piston. A switchable valve assembly is associated with the piston and can be brought into a closed state, in which the valve assembly at least partially closes the passage arrangement, and it has an open state, in which the valve assembly opens the passage arrangement. The passage arrangement automatically switches into the closed state in the event of a balancing flow that exceeds a predefined switching flow.

Abstract: A drive apparatus for a closure element of a motor vehicle, including a tube defining an axis, a spindle disposed within the tube and configured to translate along the axis from an extended position to a first retracted position and a second retracted position, a spindle nut disposed within the tube and operatively engaged to the spindle, a stop nut fixed to the spindle, and a damping element disposed between the spindle nut and the stop nut. The tube defines a first end stop face and the stop nut defines a second end stop face, and when the spindle is in the first retracted position, the damping element engages the first end stop face and is spaced apart from the stop nut.