| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent such a disorder generated in a fuel cell system structured to perform a feedback control by diluting hydrogen-containing exhaust gas with the oxygen-containing exhaust gas, that a pressure adjustment valve is controlled so as to lower the pressure of oxygen-containing exhaust gas, and the pressure of oxygen gas in the fuel cell is lowered, and a stress is burdened on a part of the fuel cell, in a time zone when the pressure of the exhaust oxygen-containing gas is lowered in accordance with the delay of a feedback. <P>SOLUTION: The fuel cell system, provided with a dilution unit for mixing the exhaust hydrogen-containing gas and the exhaust oxygen-containing gas, an exhaust channel for the exhaust hydrogen-containing gas passing through an exhaust control valve B1, an exhaust oxygen-containing gas exhaust channel, a pressure regulating valve B2 for oxygen-containing gas in the fuel cell, a dilution air supply channel, and a control means having a function of making a feedback control of a valve travel of the pressure regulating valve so as to adjusting pressure of the exhaust oxygen-containing gas nearly constant, makes a control of prohibiting the feedback control of the pressure regulating valve during a first given time ta from a starting point of the exhaust control valve B1. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
