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brake energy recovery


Video of the BMW regenerative braking system

One of the sources of increased fuel consumption in modern cars is the parasitic loss caused by the drag of having to turn ever larger alternators to provide electrical power to all the assorted accessories and features. The alternator is typically belt driven by the engine and runs continuously, providing juice to charge the battery and drive radios, lights, computers, etc. For 2008 BMW is introducing what they call Brake Energy Regeneration on the 5-Series. The new system uses a larger than normal battery, and an electronically controlled ... Read more →

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