| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain both long-time heat insulation and shortening of temperature-raising time of cooling water, in a fuel cell cooling system cooling a fuel cell by circulation of cooling water. <P>SOLUTION: The fuel cell cooling system is provided with a radiator channel 4 circulating cooling water to a radiator 3 carrying out radiation of the cooling water, a tank channel 6 circulating the cooling water to a tank 5 for storing it, and a bypass channel 7 for circulating the cooling water by bypassing the radiator 3 and the tank 5. Channels are to be changed over by an ECU 100 so that, if water temperature of the tank 5 is below freezing point at start-up of the fuel cell stack 2, the cooling water is made to flow through the bypass channel 7, and, if it is above freezing point, the cooling water is made to flow through the tank channel 6. <P>COPYRIGHT: (C)2007,JPO&INPIT |
