Los Angeles Times blogger Susan Carpenter writes that the key to packing in so much power as being a combination of small motor controller and energy-dense lithium-ion battery cells.

《洛杉矶时报》博主susan Carpenter写道，将如此大的马力塞入这么小的引擎的关键在于组合型小型电动机控制器和高能量密度的锂离子电池。

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This is key because, often, a small motor spinning very fast can provide enough power for a device, but not enough torque.

这主要是因为，通常，当小小的电机高速运转时，虽然能提供足够的功率，但不能提供足够的力矩。

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The requirement on low power and small size can be met by means of switching gyro motor, PWM amplifier, C196 MCU and PSD devices.

由于采用了开关式陀螺马达电源、PWM集成功率放大器，C196和PSD器件达到了小体积和低功耗的要求。

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It runs on battery power for about 40 miles, after which a small gasoline engine kicks in to power an electric motor that extends the EV range for up to 300 miles.

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The Volt runs on a batter and has a small gasoline motor that kicks in when that power runs down.

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Essentially leveraged as a form of high-tech turbocharging, here a small electric motor gives a modest fuel-free power boost to a direct-fuel-injected 2.4-liter four-cylinder engine.

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