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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

liter four-cylinder, naturally-aspirated direct-injection spark-ignition engine with sufficient power to continue normal driving after most of the battery energy has been depleted by EV driving or during conditions when available battery power is low because of extreme temperatures. Clutches are OWC1, C1 and B1.

Volt 150