April 23, 2007

General Motors unveils second propulsion system for Chevrolet Volt

Chevrolet Volt concept
Chevrolet Volt concept. Click image to enlarge

Photo Gallery: Chevrolet Volt concept

Shanghai, China – General Motors has unveiled the next iteration of the E-Flex electric architecture used on its concept Chevrolet Volt, configured with a new hydrogen fuel cell system, at Auto Shanghai.

This second variant of the E-Flex system uses GM’s new fifth-generation fuel cell propulsion technology and lithium-ion battery, to provide up to 483 km of strictly electric driving. The fuel cell E-Flex is a true zero emission vehicle (ZEV) and operates in all-electric mode from both hydrogen fuel cell-generated and grid electricity.

The E-Flex system was first shown in January at the North American International Auto Show in Detroit in the Chevrolet Volt concept vehicle, which uses a small bio-fuel engine with a generator to extend its range to 1,030 km.

GM’s fifth-generation fuel cell system is half the size of its predecessor, but provides the same power and performance; the fourth-generation system was used on the Chevrolet Sequel concept vehicle. The Sequel stores 8 kg of hydrogen and delivers a range of 483 km; the fuel cell Volt also delivers 483 km, but uses only 4 kg of hydrogen. The Volt also weighs 30 per cent less than the Sequel.

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