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

Green Car Congress

Schematic lever diagram showing the gearing of each of the two propulsion motor-generators to a common main transmission shaft using an individual planetary gear set. Clutches are OWC1, C1 and B1. A key decision was to split EV propulsion between two motor-generators (motors A and B). Click to enlarge.

Volt 150