| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system not in need of a water-level sensor in carrying out drainage control, and capable of preventing increase of a weight and an occupying space caused by the use of the water-level sensor. <P>SOLUTION: A controller 60 detects a load of a circulation pump 32, and controls a product water drainage system 40 in accordance with the load detected to drain the product water. Here, if a product water volume increases, the product water flows into the circulation pump 32 to raise a load of the circulation pump 32. For this, the controller 60 can detect increase of the product water by detecting the load of the circulation pump 32, doing away with the need of a water-level sensor. <P>COPYRIGHT: (C)2007,JPO&INPIT |
