Abstract: The rotor of a generator for automotive internal combustion engine turbo-superchargers is located on the turbine shaft to rotate therewith, at the turbine speeds of between 20,000 rpm to 80,000 rpm, and positioned between the exhaust gas turbine blade unit and the supercharger-compressor blade unit. The rotor, preferably, is a permanent magnet rotor, cooperating with stationery armature structures which may have different, separate windings thereon to supply different networks at independently selected voltages, for example a vehicular battery through a rectifier network and heating elements, in single-phase and three-phase connections, as desired, such as windshield heaters and the like, which can be directly a-c energized. The generator may have an axial air gap and may be cooled by a compressed air bleeder duct formed in the compressor blade unit.

Abstract: In order to provide long-term lubrication of bearings, especially ball or roller bearings that hold rotating shafts, there is provided a bearing housing defining internal reservoirs and passages as well as a conveyor mechanism which is attached to a part of the rotating shaft, for example as a helical conveyor screw, which transports lubricant under pressure through the internal channels, and thereby continually resupplies fresh lubricant to the rotating parts of the bearing. The apparatus may be used for holding the ends of shafts as well as for holding the intermediate portions of the shafts. Means for resupplying lubricant and expelling old lubricant are provided.

Abstract: A heat sensor, typically a cold-conductor resistor with a high temperature coefficient, is located close to a bearing of the alternator. It is connected to an evaluation network which, in turn, is connected to the charge control indicator to cause the charge control indicator to provide a trouble indication if the temperature of the bearing rises above a predetermined limit.