Abstract: A leaf spring device for a vehicle, comprising a leaf spring apparatus made of a fiber composite plastic, a first bearing point provided at a first end section of the leaf spring apparatus for supporting the leaf spring device on the vehicle, the first bearing point comprising exactly three rotational degrees of freedom, and a second bearing point provided at a second end section of the leaf spring apparatus facing away from the first end section for supporting the leaf spring device on the vehicle, the second bearing point comprising exactly one rotational degree of freedom.

Abstract: A method for manufacturing a leaf spring device (1) made from a fiber composite plastic, comprising the following steps: a) providing (S1) a construction kit (11) comprising a leaf spring unit (2) made from the fiber composite plastic and a plurality of stiffening elements (8, 8A, 8A?, 8A?, 8B, 8B?, 8B?, 8C, 8C?) for locally stiffening the leaf spring unit (2), b) designing (S2) the leaf spring device (1) according to a desired application, c) selecting (S3) stiffening elements (8, 8A, 8A?, 8A?, 8B, 8B?, 8B?, 8C, 8C?) from the construction kit (11) according to the design of the leaf spring device (1), and d) combining (S4) the selected stiffening elements (8, 8A, 8A?, 8A?, 8B, 8B?, 8B?, 8C, 8C?) and the leaf spring unit (2) to form the leaf spring device (1).

Abstract: A spring device (1A, 1B) for a motor vehicle (2), comprising a spring unit (3) and a stiffness adjusting unit (15) configured to stiffen the spring unit (3) so as to dynamically vary the spring constant (k, k?) of the spring device (1A, 1B).

Abstract: A method for controlling an approach of a traveling vehicle to at least one preceding reference vehicle. The method includes using an automated distance setting between the vehicle and the reference vehicle, at an acceleration that may be applied for the vehicle and that is a function of an operating position of a control element of the vehicle that is actuatable by the driver of the vehicle, and that is associated with a temporal acceleration profile for the automated distance setting. A maximum highest acceleration value of the acceleration profile implementing the automated distance setting is specified as a function of the operating position. A distance controller, a computer program, and a memory unit are also described.

Abstract: A method for producing a piston of an internal combustion engine, designed as a one-piece cooling channel piston. The piston includes an upper part and a lower part supported by corresponding circumferential joining bosses together forming a joining zone. In order to produce a bonded joint of the upper part and the lower part, the joining bosses are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone.

Abstract: A method for producing a piston of an internal combustion engine, designed as a one-piece cooling channel piston. The piston includes an upper part and a lower part supported by corresponding circumferential joining bosses together forming a joining zone. In order to produce a bonded joint of the upper part and the lower part, the joining bosses are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone.