Michael, How often do you encounter a steep road that is completely straight in the mountains? All the roads in the surrounding mountains that I know have sharp turns, for which you will *definitely* want to slow down. So except if you are in roller-coaster country, having regen will save at least part of the energy from the downhill run when you need to slow down for the next turn...
BTW, it may be that the information is skewed due to the redefinition of electric vehicle by some manufacturers. I have noticed that my Prius can get better mileage going over a large hill than when doing a steady speed in flat terrain. This is probably similar to the "Pulse and glide" hypermiling technique. This has of course nothing to do with pure electrics, but since GM calls their plug-in hybrid an EV, that may be where the confusion comes from... Regards, Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Michael Ross Sent: Wednesday, November 20, 2013 3:51 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Kia Soul EV goes global and aims for120-miledrivingrange I am not talking about regenerating. The net change in gravitational energy is zero on a round trip. I am talking comparing level to hilly, and that is all. Drive around the circuit, go steady on the level course, only brake at the end,; on the hilly course, coast down hills so you don't waste on regenerating (there is inefficiency if you regen, but if you just reduce power or coast that is fine). There is no difference between level and hilly - except - if you hit higher speeds going downhill you have more wind resistance. Change in SOC ought to be the same either way. I am not sure why you want to regen on the downhills... that will queer the deal. Regen for braking that is what is for. On Wed, Nov 20, 2013 at 6:17 PM, rayfellow <[email protected]> wrote: > What I've heard is that amount of energy captured going down hill (regen) > results in power to the wheel of about 30%. There's power lost at each > step > along the way - generating electricity, storage, release and then power to > the motor. The net result is 30%. > > > > > > > -- > View this message in context: > http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Kia-So ul-EV-goes-global-and-aims-for-120-mile-driving-range-tp4666302p4666339. html > Sent from the Electric Vehicle Discussion List mailing list archive at > Nabble.com. > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do WIth your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20131120/e78a f08a/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
