If the car needs more range, a gas engine kicks in to power a generator that creates additional electricity for the electric motor.

如果汽车需要更多的里程，燃气发动机就投入使用，产生额外的电能来驱动电机。

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When the Volt's battery pack is discharged, the 1.4-liter gas-powered four-cylinder engine kicks on to spin the 74-hp generator.

当沃蓝达的电池耗尽时，1.4升四缸燃气发动机就开工带动74马力的发电机。

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A generator may generate electricity when (it is) driven by a steam engine, gas engine, or water wheel.

当发电机由蒸气机，燃气轮机或水轮机驱动时，它便能发电。

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Then,the car automatically switches to a gas-powered engine, acting as a generator that can power through 483 more kilometers.

VOA: standard.2010.07.30

Rob Peterson and Britta Gross of GM, both integral to the Volt program, dare me to guess when the car switches from battery-only to using the gas engine as a generator, and I totally miss it.

FORBES: Chevy Volt Named Car Of The Year -- Twice