Powering hydrogen-powered vehicles

Toyota released the fuel cell vehicle (FCV)"Mirai"in 2014. Around 70 innovations from DENSO, including air-conditioning and power-control units, played a role in this breakthrough achievement.

A hydrogen society

By improving household fuel cells and FCVs, Japan hope to raise energy security and lower CO₂ emissions. We are also advancing the performance of FCVs, using technology we developed for hybrid and internal combustion engine vehicles, to further increase their popularity.

Nothing but water

FCVs are powered by a chemical reaction of hydrogen and oxygen. This reaction takes place in the fuel cell and generates electricity that drives the vehicle's motor. The oxygen is taken from the surrounding air, while the hydrogen is pumped into the vehicle's tank at a refueling station much like a gas station. The only byproduct is water, making FCVs an extremely eco-friendly alternative for the future.

Quick and precise refueling

Hydrogen serves as the Mirai's fuel and DENSO provides a Temperature and Pressure Sensor, a Hydrogen Fueling Control Unit that processes the sensors' signals and an Infrared Ray Transmitter that communicates with the Hydrogen station.

Now hydrogen refueling only takes approximately 3 minutes*.

The Hydrogen stations can precisely control refueling pressure thanks to data from our components in the FCV. This accurate control greatly reduces hydrogen refueling time to approximately 3 minutes - nearly the same time as for refueling a conventional gasoline engine vehicle.

* TOYOTA measurement under SAE standards (70Mpa and amblent temperature of 20°C). Refueling time varies with hydrogen refueling pressure and amblent temperature.

Keiji Ooshima  FCV Development Engineer

The challenge and promise of hydrogen

A cleaner future with fuel cell vehicles

DENSO technology is making FCVs more practical, contributing to a cleaner, more environment-friendly tomorrow.