Electric machine used for cranking internal combustion engine, has machine main portion whose electrical functional surface is provided with protective layer

摘要

The machine (10) has a commutator (52) which is provided several commutator segments (55) that is made of brush (58). The electrical functional surface of the machine main portion is provided with a protective layer. The thickness of the protective layer is between 2.5-50 mu m. An independent claim is included for method for producing protective layer.