| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling water circulation/feed system for a fuel cell allowing miniaturization of a valve for controlling a water flow rate to an ion exchanger installed in a passage bypassing a fuel cell, and capable of reducing consumption of driving power for the valve and of improving durability thereof. <P>SOLUTION: This cooling water circulation/feed system 1 for a fuel cell circulates and feeds cooling water to the fuel cell 2 to cool it by forming a circulation passage 3 for circulating the cooling water to the fuel cell 2 and the bypass passage 5 bypassing the fuel cell 2 and by installing the ion exchanger 5a for keeping electric conductivity of the cooling water low, and a valve for controlling a water flow rate to the ion exchanger 5a in the bypass passage 5. The valve for controlling the water flow rate to the ion exchanger 5a is composed of a solenoid valve 5b and a flow limiting orifice 5c in parallel with each other in the bypass passage 5. <P>COPYRIGHT: (C)2004,JPO |
