Honda Motor Co., Ltd.

Shinjiro Morita

Koichiro Miyata

Nobutaka Nakajima

Hiroyuki Tanaka

Katsumi Hayashi

Shinya Watanabe

Akio Yamamoto

Kentaro Nagoshi

Hiroshi Morikawa

Nobuki Koiwa

Takatsugu Koyama

Mitsunori Matsumoto

Takashi Yamamoto

Kaoru Yamazaki

Yusai Yoshimura

Satoshi Tanimoto

Go Kikuchi

Osamu Ohgami

Seiji Tonegawa

A fuel cell system that can supply fuel gas appropriately is provided. The fuel cell system includes an injectorA and an injectorB which inject fuel gas, and an ECU. The ECUadjusts the flow rate of the fuel gas that is injected from the injectorA by adjusting the valve opening time period and the valve closing time period of the injectorA, which are repeated alternately, and make at least a part of the valve opening time period of the injectorB overlap with the valve closing time period of the injectorA when opening the valve of the injectorB.

Fuel cell system

A method of shutting down a fuel cell system includes a first step of supplying hydrogen gas and air to a fuel cell stack to thereby cause the fuel cell stack to generate electricity, and a second step of stopping supply of the hydrogen gas, and then supplying air to the fuel cell stack so as to cause the fuel cell stack to generate electricity upon detection of a command to shut down the fuel cell stack. In the second step, when the pressure of the hydrogen gas is lowered to a preset lower-limit value based on an anode pressure, which actually is measured, the fuel cell stack is caused to stop generating electricity.

Method of shutting down fuel cell system

Disclosed is a fuel cell system which includes a fuel cell having an anode and a cathode and for producing electricity through reaction between the fuel gas and the oxidant gas, a fuel gas supply path through which the fuel gas passes, an oxidant gas supply path through which the oxidant gas passes, a voltage sensing device for detecting voltage produced by the fuel cell during power generation, and a decision device for determining whether or not cross leakage occurs between the anode and the cathode of the fuel cell, based on voltage information sent from the voltage sensing device. Moreover, the decision device determines that the cross leakage occurs between the anode and the cathode, if the voltage produced by the fuel cell is less than a predetermined value during the power generation.

Fuel cell system configured to detect failure and process for dealing with failure of the system

Growing community of inventors

Saitama, Japan

Shinjiro Morita