GM Demonstrates 10,000 PSI H2 Storage in HyWire Car

700 bar hydrogen storage extends range of fuel cell concept vehicle 60-70 percent.

Published: 13-Feb-2003

SACRAMENTO, Calif. - General Motors Corp. today announced that it has increased the driving range of its compressed hydrogen fuel cell vehicles with the world's first successful vehicle test of a 10,000 PSI (700 bar) hydrogen storage system.

The new 10,000 PSI tank technology extends the range of GM's HydroGen3 fuel cell vehicle by 60-70 percent compared to an equivalent-sized 5,000 PSI system. GM is the only automaker in the world to successfully test a 10,000 PSI hydrogen storage system in a fuel cell vehicle. This milestone has been achieved more than a year ahead of the stated goals of other auto companies.

The GM system, which consists of two carbon composite tanks, was approved last year by Germany's top safety institute, (Technischer Überwachungsverein - TÜV) in accordance with common industry standards in Europe and North America.

"This is a major step forward in developing fuel cell vehicles with a range equal to or better than conventional gasoline vehicles," said Larry Burns, GM vice president, research and development, and planning. "We're making great progress toward realizing the 300-350 mile range required for large-scale commercialization."

The 10,000-psi (700 bar) hydrogen storage system was developed in collaboration with GM's fuel cell strategic alliance partner, QUANTUM Fuel System Systems Technology Worldwide, Inc., (NASDAQ: QTWW) based in Irvine, Calif. The TriShieldTM tank design features a one-piece permeation-resistant seamless liner, a high-performance carbon composite over-wrap for strength and a proprietary, impact-resistant outer shell.

In addition to TÜV certification, the system has been validated according to the European Integrated Hydrogen Project (EIHP), an organization at the forefront of developing global regulatory standards for hydrogen testing and certification.

GM also has moved a step closer to being able to refuel hydrogen-powered vehicles with the same ease of today's gasoline- and diesel-powered vehicles. The refueling process takes less than five minutes.

"Compressed hydrogen gives us an attractive option, along with liquid hydrogen," said Josefin Meusinger, who is responsible for hydrogen storage systems at GM Fuel Cell Activities in Mainz-Kastel, Germany. "This accelerates our progress toward developing safe, cost-effective hydrogen storage systems for fuel cell vehicles that will excite our customers."

GM has approximately 600 people working on fuel cell technology at its three U.S. facilities in Honeoye Falls, N.Y.; Warren, Mich.; and Torrance, Calif., as well as at its research facility in Mainz-Kastel, Germany, and offices in Tokyo.

General Motors (NYSE: GM), the world's largest vehicle manufacturer, designs, builds and markets cars and trucks worldwide, and has been the global automotive sales leader since 1931. GM employs about 350,000 people around the world. More information on GM can be found at

Scott Fosgard, Advanced Technology Communications (586) 947-3295;

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