Webasto Ag Fahrzeugtechnik

Knorr-Bremse Ag

Thomas Wissler

Georg Stauble

Tiberius Wieser

Winfried Hommen

Thomas Storzinger

The electrically controllable pressure medium brake comprises an electric pressure means (EP) converter (1) to convert an electrical brake request signal into a brake pressure. By way of an emergency brake valve (1), this brake pressure (in the normal case) and a vehicle load-dependent emergency brake pressure limited by a limiting valve (12) (in an emergency), is fed to the brake cylinder (14). For vehicle load-dependent limitation of the emergency brake pressure, a second EP converter (1a) generates from a vehicle load-dependent, electrical signal a vehicle load-dependent pressure medium pressure, which is stored in a pressure medium reservoir (18) and is fed to the limiting valve (12) in order to control it. The second EP converter (1a) is closed in the currentless state, during a power failure, whereby the vehicle load-dependent pressure medium pressure is preserved and the limiting valve (12) can thus continue to limit the emergency brake pressure as a function of the vehicle load. In another embodiment supplemented by a switching valve, only one EP converter serves to generate both the brake pressure and the vehicle load-dependent pressure medium pressure.

Electrically controllable pressure medium brake for vehicles

A process and arrangement for the ventilation of the interior of a motor vehicle is provided, whereby the motor vehicle has a ventilating device and a roof having at least one roof opening which can be opened and closed by displacement of at least one cover by means of an actuating device, like in a sliding roof, a sliding-lifting roof, a lifting roof, a spoiler roof, a folding roof, or the like, and whereby the ventilation device and actuating device for the roof cover are operatively connected in such a way that, when the roof is at least partially opened, the ventilation device of the vehicle is automatically activated to increase ventilation of the vehicle interior, which activation can be effected in corresponding ventilation stages. Alternatively, to avoid air congestion in the vehicle interior, when the ventilation device is activated, the roof opening can be automatically opened by the actuating device, whereby, for example, in the case of a sliding-lifting roof, the cover of the sliding-lifting roof is brought into its extended position. In similar manner, in other vehicle roof designs, the respective adjustable roof parts are brought to an appropriate position by either an automatic control element or a manual control.

Process and arrangement for ventilating the passenger compartment of a

Hollow chamber seal for sealing an edge gap between an edge of a fixed roof section and a movable cover of a vehicle roof in which both a deformation of the hollow chamber and an additional deformation of the seal are possible to compensate for the gap tolerances. In accordance with preferred embodiments, to produce the additional deformation, at least one hollow chamber part is connected to a sealing body for pivotal movement around a bending axis that extends substantially parallel to the major surfaces of the cover in a direction parallel to the edge of the cover. Using such a seal, in accordance with process aspects of the invention, surface tolerances of a movable cover of an automobile roof can be compensated for by inserting the cover with the attached hollow chamber seal into a template, bringing the hollow chamber part into a pivoted position that corresponds to predetermined external measurements of a roof unit including the cover and the hollow chamber seal, and by attaching the hollow chamber part to the sealing body in this pivoted position. In accordance with this process, a roof unit is produced which will appropriately fit in sealed relation to an edge of a fixed roof section defining a roof opening to be closed by the cover despite tolerance variations in, e.g., the dimensions of the cover.

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Munich, Germany

Thomas Wissler