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Posted by Diako on January 31, 2008, 6:19 pm
Please log in for more thread options > Perfect. I understand what it was and was for, but I was looking for the
> answer in that link. It throws energy away. I thought that maybe the
> drag induced was somehow turning the generators and producing energy as
> does braking. According to that article, no.
>
> Thanks to everyone who replied.
>
> G-Man
>
>
>> "G-Man" ...
>>> Using the B mode for long downhill grades is recommended. Other than
>>> not riding the brakes, does this gain you anything? Does it generate
>>> more juice for the battery like braking? If not, it seems counter
>>> productive.
>>>
>>> G-Man
>> Here is a pretty good explanation of B Mode:
>> http://www.techno-fandom.org/~hobbit/cars/b-mode.html
>> Tomes
Consider what happens going on a long downhill: after some time the
battery will get to 'Full' thanks to regenerative braking. At this point
regenerative braking will stop and the mechanical brakes will do all the
job. This is the right time to use the B Mode if you don't want to waste
your discs and pads and if you don't want to boil the brake fluid, as
Richard says. The B Mode will give a Prius the same effect of engine
braking in standard cars. Right, this throws energy away but this is what
inevitably happens once the battery is full. In my experience the length of
time needed for a full battery is from 5 to 10 minutes, depending on how
steep downhill I'm driving. This energy could be saved only if our Prius
had batteries with bigger capacity: the feature the new Prius should have
in 2009 version.
Diako
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