Generator/motor mounted as an auxiliary power unit of an engine

摘要

A generator/motor includes a ring-shaped stator core (20) fixed to a motor housing (10), and a motor rotor (30). The motor rotor (30) includes a ring-shaped rotor yoke (35) which rotates in cooperation with the crankshaft (1) and which is opposed to an inner peripheral surface of the stator core (20) with a predetermined gap therebetween. The motor rotor (30) also includes a rotor flange (31) which fixes and supports the rotor yoke (35) at its outer peripheral surface. The rotor flange (31) is rotatably supported by a support member (51a) of the motor housing (10) through a bearing (60). A cylindrical shaft portion (40) is interposed between the crankshaft (1) and the motor rotor (30), and the crankshaft (1) is spline coupled to the cylindrical shaft portion (40).