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Old 08-09-2010, 05:28 PM   #1 (permalink)
GeneralAnarchy
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Maximizing brake regen with a PHEV

Hi. I am new on this forum, and have had a Prius for 3 years. I have the Enginer on order, but not received it yet. I'm looking forward to learning to get the most from it.

An idea I have is to add a brake light relay that shuts off the converter. Maybe with pull-up capacitor on the relay input so the converter stays off until say 1 minute after last brake pedal use. That way if you tap the brake to decelerate or de-cruise going into congested/low speed limit area, the converter stops to make the most of kinetic energy without Enginer plus regen brakes competing to fill the NiMH battery.

It would seem if the converter is on and battery almost full, the Prius would be more reluctant to dump even more into the battery, so kinetic energy could go to waste that a normal Prius would have captured. Plus it seems like a real cheap & simple mod. I would like to hear if there are negatives or if it's even worth the trouble to try it.

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