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Old 08-09-2012, 07:06 PM   #386 (permalink)
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I think that might be backwards? I think you would want to "pulse and glide" the alternator, like you would the air conditioning. The idea is that the extra load from the alternator (or AC) isn't much more than the load to accelerate the vehicle, but when you are coasting the extra load is much larger relative to the load to keep the motor running.

The problem with that is that you may not be on the gas hard enough for long enough for it to recharge your battery very much.

Plus there will always be some load or drag on the engine from the belt and pulley, no matter how you disable the alternator.

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