Detroit Auto Show: It's here. GM's plug-in hybrid is the Chevy Volt Concept
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In spite of the presence of an internal combustion engine, GM does not call this vehicle a hybrid. In fact, they consider it an EV with range extending capability. The engine is a turbocharged, 1.0L three cylinder engine with 71 hp that has no mechanical connection to the wheels. The ICE runs at about 1800 rpm and drives a 53 kW generator that charges the lithium ion battery pack. The engine starts and stops automatically as needed to charge the battery.
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Of course, the achilles heel of the concept is the L-ion pack. Issues of cost and durability of nanotech versions needed to make this a feasible battery remain to be settled.
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