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Originally Posted by X5Jay
I thought this technology was only for hybrids? What does it do for BMWs?
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From BMW website:
New fuel saving technology
Brake Energy Regeneration (iGR) makes its debut on the 1 Series. The system uses an Intelligent Alternator Control (IAC) and an Absorbent Glass Mat battery to recycle previously lost energy, in turn saving fuel. It achieves this as the IAC reduces drag on the engine by only engaging when required to charge the battery, whereas a traditional alternator is always pulling power from the engine. Additionally, the energy generated by the engine on over-run (under braking or descending a hill) was previously wasted. Now this lost energy is utilised by the IAC to charge the battery. iGR alone is responsible for a three per cent improvement in fuel economy.
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StumpyPete
Current: gone over to the dark side of Ingolstadt due to BMW unreliabilty
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