Abstract: A power-assisted steering system, a control device, and a method for operating this power-assisted steering system in accordance with which a control device is supplemented with at least one function for driver assistance during off-road operation based upon an operating characteristic.

Abstract: A motor vehicle has a plurality of electric consuming devices and a power supply system for supplying the electric consuming devices with electric energy. The power supply system has a decentralized construction and, for supplying electric energy to at least one electric consuming device or to a group of electric consuming devices, has a fuel cell system which is electrically isolated from other power sources and which is arranged in the proximity to the assigned consuming device or group of consuming devices. The decentralized construction may have many mutually independent fuel cell systems, permitting a high-efficiency power supply.

Abstract: The invention relates to electroconductive layered paper with a layer structure consisting of at least one first, one second and one third layer, comprising at least one electroconductive material in the form of carbon fibres. Said first, second and third layers are produced or deposited one after the other in an air stream, using the airlaid technique. The carbon fibres lie predominantly in the plane of the layer in the first layer (1), increasingly at a slant and/or increasingly perpendicular to the plane of the layer in the second layer (2) and are located on top of the second layer in the third layer (3) in a ground form. The invention also relates to a method for producing electroconductive layered paper and to its use as a gas diffusion electrode in polymer electrolyte membrane fuel cells.