As for McKinley's 42-volt turbocharging system, BorgWarner decided to shelve the idea for the time being.

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Carefully-managed turbocharging ensures that the maximum 384 lb-ft torque is available across most of the twin-turbo V6's operating range.

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The combination of turbocharging and high-pressure direct injection allows Ford to substitute a smaller engine for a bigger one.

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Turbocharging is rapidly growing, from a niche feature designed to make cars go fast, to a mainstream technology for saving fuel.

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Turbocharging is also making its way into larger vehicles, like the 2012 Ford Explorer, which gets an optional turbo engine.

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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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The difference between turbocharging and supercharging is simple: a turbocharger boosts engine air pressure by using exhaust gas to power a turbine that pushes more air into the combustion chamber.

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So, crawling out on a limb, he asked BorgWarner's strategy board for funds so that he and a small group of engineers could begin work on a new turbocharging system that would draw its power from the supersize battery instead of the car's exhaust system.

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