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Old 07-20-2006, 02:24 PM
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nash nash is offline
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Real Name: Nash
Location: San Diego
Hybrids: 05 FEH, 07 TCH
Posts: 596
Default Re: Why am I only getting 31.8 MPG????

Quote:
Originally Posted by spiff72
Question about regenerative braking:

Is it better for FE to anticipate stop signs and red lights by simply taking your foot off the accelerator and coasting as long as possible, or is it better to lightly apply the brakes a bit later than the above scenario?

Would both of these give you the same net energy from regeneration?
I find it best to brake lightly until I drop into EV mode (under 40mph) and then coast up to the stop, braking more normally as I come to the stop sign or red light.

A chart showing the regen rate vs speed and braking force exists for the Prius, and shows as the car slows down the amount of regen braking force goes up considerably. The regen braking force starts to taper off below 15 mph and is gone by 6 mph. I'll edit with the URL if I can find that chart.

Edit: Found two charts, the first is the one I've seen before. The second one is acutal data recorded while braking. Both claim to be for a 2004 model Prius.



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Last edited by nash; 07-20-2006 at 02:54 PM.
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