DYNAMO-ELECTRIC MACHINE FOR INTERNAL COMBUSTION ENGINE

摘要

This dynamo-electric machine (10) for an internal combustion engine has a rotor (21) and a stator (31) and is provided with a sensor unit (41). Said sensor unit (41) has a rotational-position sensor (43) located between magnetic poles. Said rotational-position sensor (43) detects the rotational position of the rotor (21) by detecting the magnetic flux from permanent magnets (23) on the rotor (21). The sensor unit (41) is affixed to the stator (31) via an affixing bolt (44) in a mounting section (54). The rotational-position sensor (43) protrudes from the sensor unit (41) and is accommodated inside a cover (53) located between magnetic poles. Said cover (53) contacts the stator so as to define the axial position of the rotational-position sensor (43). The sensor unit (41) has a leg part (61) that can be pressed against a body (13) so as to deform in the axial direction.