US Patent 7028796 Four-wheel drive apparatus using motor, and method thereof
Patent 7028796 was granted and assigned to Hyundai Motor Company on April, 2006 by the United States Patent and Trademark Office.
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A four-wheel drive apparatus for a vehicle with front wheels driven by an engine comprises a generator connected to the engine for generating an electric current; a motor driven by the electric current supplied from the generator and supplying power for driving rear wheels; a battery charged by the electric current supplied from the generator; a first relay switch for switching electric contact between the generator and the motor; a second relay switch for switching electric contact between the battery and the generator, wherein, the current generated by the generator is alternatively supplied to the motor or the battery.
US Patent 7028796 Four-wheel drive apparatus using motor, and method thereof
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