Hello -
This is an interesting blurb :
Quote:
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When we first talked to GM about the Volt three years ago, the thought was that the engine would simply run at a constant speed to maintain the battery charge. As development has continued, that strategy has evolved. The output of the engine/generator is based on the needs of the battery and motor, not what the driver is demanding. As the level of the battery changes, the generator is controlled to provide the necessary, electrical output. The engine speed in turn is selected to maximize the load on the engine. An engine runs most efficiently at full load. If the electrical demand is low, a lower engine speed is used in conjunction with the generator control to get the desired load.
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I was expecting a single-RPM engine.
CarloSW2