On 17 Jun 2016 at 8:45, Robert Bruninga via EV wrote: > Certainly in any case when someone just randomly pushes the regernerative > brakes for no other reason than to recover energy, it is a NET LOSS. It is > far more efficient to preserve the energy in a moving car in its kinetic > energy than to go through the inefficiencies of conversion to chemical storage > and then converting back from chemical to mechanical. > > For maximum range, I would think the correct way to say it would be "with > judicious (or minimal) regenerative braking and smart coasting..." might be > the better description?
You're spot on for normal city driving, and that's something that needs to be said. Coasting beats the greater conversion losses every time. But did you read the report I pointed to? http://www.evdl.org/pages/evergreen.html This was a different situation - driving over a mountain. In a case like that, you want and need fairly aggressive regeneration on the downslope, when coasting would push you up to a hazardous or illegal speed. As the report says, by combining regen on steep downslopes and coasting on gentler ones, Axel managed to get his energy use down to very near what it would have been for an equivalent distance on flat terrain. This says a lot for the efficiency of his drive system and its regen! David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
