Daimler Ag

Daimler-Benz Ag

Mercedes-Benz Aktiengesellschaft

Andreas Franke

Thomas Koch

Manfred Link

Helmut Wawra

Wilhelm Albrecht

Jan Gaertner

Joachim Kieserling

Harald Gellner

Bernd Wagner

Dominik Mall

A method and a device for operating a waste heat utilization device for an internal combustion engine of a motor vehicle is disclosed. The waste heat utilization device contains a waste heat utilization circuit in which a working medium circulates. A conveyor, an evaporator, an expansion machine, and a condenser are disposed in the waste heat utilization circuit. A basic adjustment of the waste heat utilization circuit is provided, which as a function of a heat input into the working medium adjusts the mass flow rate at the conveyor and/or the ratio between high pressure and low pressure at the expansion machine. In addition, a pilot control is provided which recognizes a change of the operating point of the internal combustion engine and, when the operating point is changed, controls the condensation output of the condenser in accordance with a mass distribution of the working medium in the waste heat utilization circuit optimized to the new operating point.

Method for operating a waste heat utilization device

According, two casing parts is disclosed for a spiral cable for connecting electrical line terminals between a stationary vehicle steering column and a rotatable steering wheel. One of the two casing parts has an annular space for the spiral cable which is open towards an axial face and the other casing part is in the form of a plate for covering the annular space. It is thus possible to arrange the two casing parts at an axial distance from one another and thus to prevent the two parts from rubbing against one another.

Casing for a spiral cable

A device for locking an actuating lever of a shifting device of a gear-change mechanism of a motor vehicle, in a lever position associated with a particular shift state utilizes a swivellable locking element connected to a brake pedal via an adjusting linkage to be moved into a locking position by a restoring spring holding the brake pedal in the unactuated rest position. Depression of the brake pedal releases the actuating lever. The adjusting linkage contains a resiliently-acting intermediate member acting on the locking element control to position a counter-control cam into engagement with an actuator control cam to lock the actuator. When the actuating lever is actuated into a nonlockable lever position, the locking element is moved into a floating position against the spring force of the intermediate member, while the brake pedal remains essentially in a rest position by virtue of an enlargement of the effective length of the adjusting linkage.

Device for locking an actuating lever of a shifting device

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Stuttgart, Germany

Andreas Franke