Zf Friedrichshafen Ag

Lemforder Electronic Gmbh

Peter Hofmann

Michael Klank

Gabriele Fruhmann

Joachim Spratte

Jens Heimann

Volker Wagner

Metin Ersoy

Jens Vortmeyer

Frank Nachbar

Julian Stratmann

Christoph Elbers

Rainer Haevescher

Klaus Haskamp

Thomas Rupflin

Dennis Pape

Hartmut Werries

Matthias Moeller

Clemens Hacker

Sami Uddin Siddiqui

Michael Spiekermann

Henner Schwiebert

A method for checking the tire pressure of a vehicle (), which vehicle comprises at least one vehicle wheel () and a vehicle body () which is supported elastically on the vehicle wheel (). The wheel includes a tire (), filled with gas, on which wheel the vehicle stands on a subsurface (). The vehicle body () is loaded with an additional mass and thereby the vehicle body is stimulated into a mechanical oscillation () relative to the subsurface (). A response signal (A), that characterizes the mechanical oscillation (), is measured and analyzed, whereby at least one response value that characterizes the current gas pressure in the tire is determined.

Mechanically oscillated method for testing the tire pressure of a vehicle

A mechanical component for a vehicle, such as a ball stud, having a cylindrical measurement region with an outer surface. A force sensor is associated with the cylindrical measurement region for detecting at least one force to which the component is exposed. The forces detected by the nanotube sensor may include compressive and/or tensile stress forces. The force sensor includes a layer of carbon nanotubes applied to the outer surface of the cylindrical measurement region.

Mechanical component having a cylindrical nanotube force sensor

A component of a machine. The component has a measuring fixture for measuring forces and at least one metallic, magnetic portion. The measuring fixture includes at least one field-generating member for producing an electromagnetic alternating field and at least one detection member for detecting changes of the magnetic field produced. The field-generating member and the detection members are arranged on the metallic, magnetic portion and are designed to interact with the metallic, magnetic portion in such manner that by way of the measuring fixture, as a function of measurement signals from the detection member, forces acting on and/or deformations of the component can be detected.

Device having a measuring apparatus for measuring forces and/or loads

A process for continuous production of profile components of fiber composite material by a forming chain system, an associated profile component and the chain system for its continuous production. The method draws on the forming chain system having at least one forming chain. Here, preform batch of fiber strands, impregnated with matrix material and/or woven fiber webs, knit webs or nonwoven webs, are brought to the system at the working run of the at least one forming chain and are guided through the forming chain system, forming a continuous profile containing the profile component with a variable cross section over the profile length and/or with a profile longitudinal axis with virtually any desired extent. The profile components can be provided with local reinforcements, add-on parts of inserts, for example, for introducing force, as early as during primary forming.

Fibre composite profile component and process and apparatus for continuous production

A bearing mechanism for a transverse leaf spring that can be mounted in the region of an axle of a vehicle. The bearing mechanism has an outer bearing shell device and insertion devices which are at least partially encompassed by the outer bearing shell device and comprise layer elements with different stiffnesses. In the assembled state, the insertion devices are each disposed between the outer bearing shell device and the transverse leaf spring. In the region of a support surface of the transverse leaf spring, a recess is formed for each of the insertion devices in which the insertion devices engage in a form-locking manner. The insertion devices are each formed in the contact surfaces facing the support surfaces of the transverse leaf spring, having at least one receiving device into which, in the assembled state of the insertion devices, a region of the transverse leaf spring engages.

Bearing mechanism for a transverse leaf spring

A towing device, for a towing vehicle, with a coupling shaft attached to the towing vehicle, a ball head mounted on the coupling shaft so that the ball head can rotate about a vertical axis, which can be coupled to a coupling counterpart of a trailer vehicle, and with an angle-measuring device by which rotation of the ball head about the vertical axis, relative to the coupling shaft, can be determined, and a force-measuring device by which force exerted by the ball head on the coupling shaft in the direction of the vertical axis can be determined.

Towing device for a towing vehicle

A bearing mechanism for a transverse leaf spring mounted near a vehicle axle of a vehicle. The bearing mechanism has an outer bearing shell device and insertion devices, which are encompassed by the outer bearing shell device and comprise layer elements of different stiffness. The insertion devices are each disposed between the outer bearing shell device and the transverse leaf spring. First layer elements have a greater stiffness and are positioned between the transverse leaf spring and second layer elements with lower stiffness. The first layer elements are half-shell shaped and convex between end regions and oriented in the axial direction of the transverse leaf spring. The end regions of the first layer elements comprise regions that are concave with respect to the surface of the leaf spring, and free ends of which point away from the surface of the leaf spring.

A bearing mechanism for a transverse leaf spring that can be mounted in the region of an axle of a vehicle. The bearing mechanism comprises an outer bearing shell and insertion devices which have at least some regions encompassed by the outer bearing shell, and which each comprise layered elements having different stiffness. When assembled, the insertion devices are disposed between the outer bearing shell and the leaf spring. The leaf spring has a recess into which sections of the insertion devices engage. The recesses are located on opposed top and bottom surfaces of the leaf spring, with respect to a vertical axis of the vehicle. In the mounted state of the leaf spring, the recesses are delimited by top and bottom edge regions that are formed between top, bottom and lateral surfaces, in the longitudinal direction of the vehicle.

A ball and socket joint is provided for a motor vehicle that has a joint housing (), in the interior space of which a ball shell () is arranged. The ball () of a ball pivot () is accommodated in the ball shell (). A sensor device (), for measuring forces and loads, is arranged on a flexurally elastic printed circuit board (). The printed circuit board is fastened in the joint housing () in a flexurally mobile manner. The sensor device () measures deflections and mechanical stresses of the sensor printed circuit board (). A transmission device introduces forces or a bending moments into the sensor printed circuit board () in case of a deformation of the ball shell (). The process makes possible the permanent determination of the state of wear of the ball and socket joint via measurement of the prestressing force of the ball shell.

Ball and socket joint with sensor device and process for wear measurement

A hollow-bodied component, which includes at least two die-cast shell elements (), is suitable in particular for use as a steering component in motor vehicle running-gear assemblies. The hollow-bodied component has a connection zone () configured on the shell elements () to be interconnected. One connection zone () has one first contact area () with an essentially U-shaped cross-section that is located on the respective shell element () and the other connection zone has at least one strut-type second contact area () that engages in the space in the U-shaped first contact area () and that is located on the respective other shell element (). The connection zones () are joined in a force fit in a cold welding process that uses a contact pressure (F, F), whose value is a multiple of the separating force components (F) that act on the connection zones () during operation. A method is provided for producing the component.

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Gauting, Germany

Peter Hofmann