Toyota Sora hydrogen-powered bus revealed

Hydrogen fuel cells should be particularly suited to larger electric vehicles, because they eliminate the need for a huge array of heavy rechargeable batteries. That's the approach taken by Toyota for the new Sora bus concept.

Its electricity is generated by a pair of solid polymer electrolyte fuel cell stacks, which are fed by ten high-pressure tanks that together hold 600 litres of hydrogen.

Toyota Sora Concept (2017) Front Side

Final drive is via two AC synchronous electric motors. They each deliver 152 bhp (113 kW / 154 PS), with 335 Nm (247 lb/ft) of torque. Any excess energy is stored in a nickel-metal hydride battery.

As fuel cells potentially can be used as mobile power stations, an external supply system is also fitted. This is able to provide up to 235 kWh in emergency situations.

An overall length of 10.5 metres (34’ 6”) allows the Sora to carry 22 seated and 56 standing passengers. Toyota is planning to launch a production version in Japan next year, but build volume will be limited to around 100 examples.

Toyota Sora Concept (2017) InteriorToyota Sora Concept (2017) Rear Side

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