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E-Flex. E-Flex—not to be confused with ecoFLEX—describes an all-electric drive architecture that can use a variety of sources to provide the electric power. GM introduced E-Flex in January 2007 at the Detroit auto show with the unveiling of the first variant of the Chevrolet Volt—a plug...
The E-Flex System was first shown as the plug-in battery electric propulsion system for the Chevrolet Volt concept vehicle at the North American International Auto Show in January. (Earlier post.) A plug-in fuel cell variant of the E-Flex system was shown at the Shanghai Auto Show in Apri...
At the Shanghai Auto Show, GM unveiled a second propulsion system for the Volt concept under the aegis of the E-Flex electric drive family: a hydrogen fuel cell variant that uses GM’s new fifth-generation fuel cell system as its primary power source.
In GM’s view, all-electric mode in a conventional two-mode hybrid at this point is limited to lower speeds and loads. EV mode in a plug-in two-mode hybrid such as the Saturn VUE will support a range of 10+ miles, and the E-Flex/Volt series hybrid plug-in will provide 40+ miles all-electric...