Honda Motor Co., Ltd.

Akane Goto

Atsushi Kamachi

Manabu Iwaida

Takuto Nakagawa

Kazuhide Inoue

Ryo Kobayashi

Kiyohide Hibino

A control unit estimates a discharged fuel gas amount, i.e., an amount of fuel gas discharged from the outlet of a cathode flow field, of a fuel exhaust gas introduced from a communication flow path to the inlet of the cathode flow field and then flowing through a cathode. The control unit calculates an oxygen-containing gas amount necessary for dilution at the time of discharge into the atmosphere, from the estimated discharged fuel gas amount, and sets a discharge amount of the air pump, based on the calculated oxygen-containing gas amount.

Fuel cell system and method of controlling the system

In a method of operating a fuel cell system, a stable-period voltage difference is calculated in a state where output power of the fuel cell stack is stable. Thereafter, a voltage difference is calculated during power generation. Then, it is determined whether or not the change amount of the voltage difference with respect to the stable-period voltage difference has exceeded a predetermined threshold value. When it is determined that the change amount has exceeded the predetermined threshold value, electric power is generated with the supply amount of the anode gas to the fuel cell stack being increased.

Method of operating fuel cell system

Growing community of inventors

Wako, Japan

Akane Goto