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Chevy Volt Delivers Novel Two-Motor, Four-Mode Extended Range Electric Drive System; Seamless Driver Experience Plus Efficiency

Green Car Congress

In this mode, the ring gear is held (locked) by clutch C1. To engage both motors and preserve motor efficiency, clutch C1 is disengaged, allowing the ring gear to rotate. The Volt accelerates crisply (and quietly), and handles snappily at moderately excessive interstate speeds—all on battery power. Click to enlarge.

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GM provides technical details of the Gen 2 Voltec propulsion system used in the 2016 Volt

Green Car Congress

A fifth paper presented at the World Congress assessed one year of in-use operating data from first-generation Chevrolet Volt and projected the performance of the second generation.). Clutches are OWC1, C1 and B1. At the low end of the power band, the engine remains off during many of the low speed and power conditions.

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