| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the capability of a fuel cell system to cope with fluctuations of required load. <P>SOLUTION: A fuel cell system 30 comprises a fuel gas supplying/discharging mechanism 50, an oxidizing gas supplying/discharging mechanism 60, and a cooling water circulating mechanism 70 for cooling a fuel cell. A motor 63 used in an air compressor 62 of the fuel gas supplying/discharging mechanism 50 is provided with a substantially cylindrical rotor 110. When a length of the rotor 110 in an axial direction is L, a length of the rotor 110 in a radial direction is D, an allowable torque of the motor 63 is Ta, and a maximum torque to be required of the motor 63 is Tm, a value of L/D is a substantially maximum value satisfying Ta≥Tm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
