Electrical machine, especially generator for mobile vehicles, e.g. motor vehicles, has higher air pressure in inlet chamber than outlet chamber, and pressure difference causes flow of cooling air

摘要

The machine (22) has an air inlet (46) and an air outlet (49) so that a cooling air flow can pass through the machine. The air inlet can be connected to an inlet chamber (47) and the outlet can be connected to an outlet chamber (56). A higher air pressure can act in the inlet chamber than in the outlet chamber and hence a pressure difference can be produced to cause a flow of cooling air.