| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell cooling system that controls appropriately a heat dissipation at a radiator taking that the heat dissipation at the radiator becomes non-linear in relation to the opening of a three-way valve and the number of revolution of the radiator fan, or the like into consideration, and enables the temperature control of a fuel cell with a high degree of accuracy. <P>SOLUTION: A target figure of a heat dissipation at a radiator is calculated by a calculating means 106 of a target heat dissipation of a controller 100 in such a manner that the temperature of a fuel cell stack may become a target temperature. Based on the target heat dissipation, a target number of revolution and a target opening of the three-way valve are calculated at a cooling control means 107 of a cooling liquid, and accordingly the number of revolution of the radiator fan and the opening of the three-way valve are controlled. As a result, even if the relationship of the heat dissipation at the radiator with the number of revolution of the radiator fan, and the opening of the three-way valve is non-linear, it becomes possible to perform appropriately the temperature control of the fuel cell stack without bringing about such an event that the heat dissipation at the radiator becomes on temporary basis extremely large or extremely small in relation to the heat dissipation of the fuel cell stack. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
