Abstract: A vehicle drive having a vacuum system for a vehicle having an internal combustion engine that is connected to a supply air line and to an exhaust air line. The vacuum system has an ejector. A propellant gas line opens into a nozzle channel of a propellant nozzle of the ejector. The nozzle channel opens into a mixing chamber of the ejector through a nozzle opening. A suction line opens into the mixing chamber and the mixing chamber on an outlet side opens directly or indirectly into a mixed gas line. The mixed gas line opens into the supply air line. The suction line is connected to a vacuum consumer, and the nozzle opening in the propellant nozzle is formed by a nozzle edge having teeth and/or corrugations.

Abstract: The disclosure relates to a line assembly for a liquid or gaseous medium, including at least one first line, which is designed as a UREA line, and including a second line for a liquid or gaseous medium. The first line and the second line are thermally coupled to each other. According to examples, the first line is wrapped around the second line or the second line is wrapped around the first line.