Rotating electrical machine and its brush systems, e.g. vehicle alternator, are cooled by oil mist and its slip rings include alloying component with affinity for oxygen

摘要

Internal cooling of the machine is provided by a liquid-gas mixture flowing over all heat-producing components. This includes the brush (30) system. The metal contact, e.g. a slip ring (24), is made of an alloy including at least one component having affinity for oxygen.