Honda pushes hydrogen farther

Honda pushes hydrogen farther
Photos by -Autonet.ca
Joe Duarte
Published: 29 11 2006

The Honda FCX Concept features a newly developed compact, high-efficiency Honda fuel cell stack that allows the car to maintain a low-floor, low-riding, short-nose body, in order to maximize cabin space.

A totally new fuel cell vehicle based on the concept is due for a 2008 launch in Japan and the United States.

To meet objectives for significant gains in both environmental and driving performance, Honda equipped the FCX Concept with a V Flow fuel cell platform consisting of a compact, high-efficiency fuel cell stack arranged in an innovative centre-tunnel layout.

The new fuel cell stack is 20 percent smaller and 30 percent lighter than the current FCX FC Stack, yet its power output is 14 kW greater. The drive motor has been positioned coaxially with the gearbox for a more compact design, with output increased by 15 kW. Overall, the power plant is about 180 kg lighter than that of the current FCX and about 40 percent smaller. The result is improved energy efficiency and performance while again contributing to a more spacious interior.

While with previous fuel cell stacks the hydrogen and the water formed in electricity generation flowed horizontally, the new FCX Concept features vertical-flow design. This allows gravity to assist in draining the water produced, key to high-efficiency fuel stack performance. The powerplant is about three times more efficient than a gasoline engine, twice as efficient as a hybrid unit, and about 10 percent better than the previous generation.

As an auxiliary power source, the FCX Concept carries a compact, high-efficiency lithium ion battery, contributing to increased power output and again encouraging the use of a more compact powerplant.

The end result is stable power generation under a broad range of conditions, higher output from a smaller package and an increase in driving range of about 30 percent over the previous generation. Low-temperature startup has also been significantly improved, enabling cold-weather starts at temperatures as low as minus 30 degrees Celsius.

Vehicle features include seat upholstery and door linings made from a plant-based material that offers outstanding durability and resistance to sunlight damage. Other improvements such as Shift-by-Wire and a newly designed instrument panel with easy-to-read display of hydrogen fuel consumption facilitate improved ease of operation.

Specifications
Number of passengers: 4
Max. Output: 127 horsepower (95 kW)
Max. Torque: 188.8 lbs.ft. (256Nm)
Motor Type: AC synchronous motor (Honda Mfg.)
Fuel Cell Stack Type: Proton Exchange membrane Fuel Cell
Output: 100kW
Fuel:
Compressed hydrogen
Fuel Storage:
171-litre high-pressure hydrogen tank
Energy Storage:
Lithium Ion Battery
Dimensions (L x W x H):
4,760 x 1,865 x 1,445 mm
Max. Speed:
160km/h
Driving Range:
570 km

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