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Chalk one up for Diesel Hybrids
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=30716
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Author:  litton [ Wed Mar 19, 2008 11:21 am ]
Post subject:  Chalk one up for Diesel Hybrids

Interesting article.

http://www.technoride.com/2008/03/bmw_d ... n_econ.php

Isn't Jeep working in a simliar direction?

Author:  RTStabler51 [ Wed Mar 19, 2008 12:14 pm ]
Post subject: 

I don't think it was a hybrid was it?

Author:  dog_party [ Wed Mar 19, 2008 12:43 pm ]
Post subject: 

The BMW isn't a true diesel hybrid. I just has regenerative brakes.

Still an interesting, though un-scientific, test. Thanks for sharing!

Author:  DarbyWalters [ Wed Mar 19, 2008 1:09 pm ]
Post subject: 

Here are the top 25 I believe mpg cars in Europe (you will notice only 1 petrol and it is a hybrid):

http://www.bovinebazaar.com/deisel.htm

Author:  danoid [ Wed Mar 19, 2008 4:34 pm ]
Post subject: 

The Prius doesn't do well on the highway. Note that it's EPA sticker is higher for city driving. That is due to two reasons, lack of engine stop/start out of city driving, and loss of electrical power efficiency at higher road speeds.

The GM/Chrysler/Benz/BMW two mode hybrids (only the GM is in production yet - Chrysler is following soon) swap the function of the drive and generator motors at highway speeds to minimize electrical losses. They end up almost even for highway / city driving fuel economy.

An excellent description of how the Prius system works can be found here

http://eahart.com/prius/psd/

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