Aisan Kogyo Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Kiyoshi Yoshizumi

Koichi Suda

Akihisa Hotta

Tsukuo Ishitoya

Yasuhiro Nonobe

Nobutaka Teshima

Minobu Mizuno

Shoichi Hagiwara

Kazunori Yanagihara

Shinpei Miura

Masaru Gamoh

Tatsuyuki Sugiura

Consumed hydrogen-off gas is discharged from a fuel cell via a hydrogen-off gas exhaust flow passage. Consumed oxygen-off gas is discharged from the fuel cell via an oxygen-off gas exhaust flow passage. The oxygen-off gas flowing through the oxygen-off gas exhaust flow passage and the hydrogen-off gas flowing through the hydrogen-off gas exhaust flow passage are mixed and diluted in a mixing portion. The gases mixed in the mixing portion flow into a combustor via a gas-liquid separator. The combustor, which includes a platinum catalyst, causes hydrogen contained in the mixed gases to react with oxygen by combustion and further reduces the concentration of hydrogen contained in the mixed gases. The mixed gases whose concentration of hydrogen has been reduced by the combustor is discharged to the atmosphere.

Onboard fuel cell system and method of discharging hydrogen-off gas

A high-pressure switching valve device. A valve main body pressed to contact with an end face of a valve seat when the high-pressure switching valve device is closed, and a seal member pressed to contact with the end face of the valve seat when the high-pressure switching valve device is closed. When the high-pressure switching valve device is closed, the seal member is located on a high-pressure side and the valve main body is located on a low-pressure side.

High-pressure switching valve device

A liquid drain ( ) includes a drain body ( ). The drain body defines a float chamber ( ) that is adapted to store a liquid. A liquid level adjusting mechanism serves to adjust the liquid level within the float chamber and includes a float ( ). The float has a float body ( ) that is adapted to float on the liquid surface within the float chamber. A damper ( ) may inhibit or minimize a shaking phenomenon of the float body due to waving of the liquid within the float chamber.

Liquid drains having liquid level adjusting mechanisms

Gas/liquid separating devices include a separator ( ) for separating a mixed gas/liquid flow (M). A liquid drain ( ) communicates with the separator and defines a liquid storage chamber ( ). The liquid drain serves to temporarily store a liquid separated from the mixed flow within the liquid storage chamber, so that a space that is not occupied by the liquid is ensured within the liquid storage chamber. An adjusting mechanism ( ) may serve to adjust the pressure within the space of the liquid storage chamber.

Gas/liquid separating devices

In a gas valve including a valve body having an annular seal surface, of which an axis is disposed to extend in a vertical direction, and of which seal surface a diameter becomes larger toward a lower end of the seal surface, to prevent water drops on the seal surface made by condensation from freezing and to prevent the seal surface from being fixed to a seat because of the freezing, a liquid repellent film is provided on the seal surface of the valve body.

Growing community of inventors

Toyota, Japan

Kiyoshi Yoshizumi