| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure superior pressure responsiveness in which supply pressure of a fuel gas can be appropriately changed according to an operation state of a fuel cell, and in which effect of the change with the passage of time and individual difference is suppressed as much as possible. <P>SOLUTION: A basic injection time of an injector 35 is obtained from an FC current detected in a step S1, and what is corrected (learned) by multiplying a prescribed correction factor K to the basic injection time based on the FC current is newly redefined as the basic injection time, and a feed forward term (F/F term) of the injection time to be finally obtained is obtained (step S5). This correction factor K is set by obtaining flow rate characteristics per unit driving time of the injector 35 from the relationship of the gross driving time Tinj of the injector 35 and the gross injection amount Q by the time until the FC inlet pressure reaches the target pressure by pressurizing an FC inlet pressure to a prescribed target pressure on the anode side of the fuel cell 10 at starting a system, and updated every time at starting up the system. <P>COPYRIGHT: (C)2008,JPO&INPIT |
