| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of reducing thermal impact caused by circulating coolant. <P>SOLUTION: In this fuel cell system, the proportion in which the coolant from a fuel cell stack side is branched into a radiator side and a bypass passage side can be adjusted by a three way valve 33. An opening operating means 40a operates a branching proportion by the three way valve 33 based on a target coolant temperature Ttarget. A limiter setting means 40b variably sets the limit value of the branching proportion by the three way valve 33 based on the temperature condition of the coolant. Although a three way valve control means 40c controls an adjusting means based on the branching proportion operated by the opening operating means 40a, when the branching proportion to the bypass passage side is larger than the limit value of the branching proportion set by the limiter setting means 40b, the branching proportion operated by the opening operating means 40a controls the three way valve 33 based on the limit value of the branching proportion set by the limiter setting means 40b. <P>COPYRIGHT: (C)2007,JPO&INPIT |
