Abstract: An electric machine, having a shaft as well as a cooling system, which has at least one cooling channel formed by at least one component of the electric machine. The cooling system is filled with an electrically conductive coolant. The shaft is in electrical contact with the coolant and is grounded via the coolant.

Abstract: A method for operating a motor vehicle by detecting a destination input by a motor vehicle occupant; and determining which residual range of the motor vehicle will be indicated at the destination. If the determined residual range is less than a predetermined threshold value, the motor vehicle is operated in a consumption optimizing mode during which the motor vehicle is operated to carry out automatic measures for reducing the consumption of the motor vehicle until reaching the destination.

Abstract: A vacuum cleaner is provided having a housing, a suction unit arranged therein and a suction pipe which enters the housing and is connected to the suction side of the suction unit via a dirt collecting container and a separating device. The closed dirt collecting container is adapted to be inserted into the housing and, when in the inserted position, be connected to the suction pipe in sealed manner via an intake opening and connected to the suction side of the suction unit in sealed manner via an extraction opening. The dirt collecting container is partially filled with fluid into which there enters a feed pipe that extends from the intake opening into the fluid. Deflector surfaces are arranged above the fluid-filling, said surfaces forming a multiply-deflected flow path between the upper surface of the fluid and the extraction opening for the suction current being passed through the fluid.

Abstract: In order to improve the degree of separation on the one hand and to obtain a vacuum cleaner of extremely simple construction on the other in the case of a vacuum cleaner having a housing, a suction unit arranged therein and a suction pipe which enters the housing and is connected to the suction side of the suction unit via a dirt collecting container and a separating device, it is proposed that the closed dirt collecting container should be adapted to be inserted into the housing and, when in the inserted position, be connected to the suction pipe in sealed manner via an intake opening and be connected to the suction side of the suction unit in sealed manner via an extraction opening, that the dirt collecting container should be partially filled with a fluid into which there enters a feed pipe that extends from the intake opening into the fluid, and that deflector surfaces should be arranged above the fluid-filling, said surfaces forming a multiply-deflected flow path between the upper surface of the fluid an