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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

The Volt has two primary driving modes: All battery-electric (charge depleting), in which the battery is the sole source of power for the motors; and. In this mode, the ring gear is held (locked) by clutch C1. Click to enlarge. Mode 1: Low-speed EV Propulsion (Engine Off). Click to enlarge. Click to enlarge.

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

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Increased charge sustaining fuel economy. Smooth, unobtrusive, power on demand regardless of whether the vehicle is operating in EV or range extended mode. The major components of the propulsion system are the battery pack, the drive unit, and the engine. Clutches are OWC1, C1 and B1. Improved performance.

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