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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

We’re almost repurposing an internal combustion engine to provide this very unique type of propulsion. Two of the clutches are used to either lock the ring gear of the planetary gear-set or connect it to the generator/motor depending on the mode. In this mode, the ring gear is held (locked) by clutch C1. 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

Increased charge sustaining fuel economy. Clutches are OWC1, C1 and B1. Each motor-generator is connected with a sun gear, and a clutching device can provide reaction torque by holding the ring gear of that planetary gear set. liter range extender engine. (A Key design goals included: Increased all-electric range.

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