ELECTRIC cars, in one form or another, are taking an increasingly important role in the future of personal transportation. That does not mean the internal combustion engine, our faithful power source for more than a century, is on its way to the scrap heap anytime soon.
But the familiar petroleum-fueled engine is being reconfigured for a considerably different role in the electric propulsion era.
This change will be especially evident in cars like the Chevrolet Volt, a hybrid whose gasoline engine only powers a generator to charge the battery pack — the engine has no mechanical connection to the wheels. The engine is tuned to operate over a narrow speed range, using the least gas and producing the smallest amount of pollutants.
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