In an engine unit sensor installation structure, a partition wall (63) that separates a crank chamber (17a) from an inner space of an engine cover (51) is provided on an opening (17b) of a crankcase (17). A rotor (52) is attached to an end portion of a cra...

A rotating electric machine suitable for use as a starter-generator of an engine (E) of a saddle-ride type vehicle, particularly a motorcycle, is provided that achieves a size reduction with a simple structure. A magnetic sensor element (H) is incorporated...