Thanks, that is what I said. Nice to see someone has published measured results.
________________________________ From: tomw via EV <[email protected]> To: [email protected] Sent: Tuesday, October 28, 2014 10:09 AM Subject: Re: [EVDL] EVLN: What Click-n-Clack know about regen (?) I've measured 50 - 55% of the vehicle kinetic energy back into the pack during braking with only regen a number of times. The Tesla S seems to do a bit better, with up to 70% back - the more aggressively you use it the more you get back, but its not a huge effect. Dropping down from a summit I typically get back about 20% of the energy that was used going up to the summit. This is a link to a post at diyelectriccar where I posted a number of links to data I've taken: http://www.diyelectriccar.com/forums/showpost.php?p=366384&postcount=20 This is a link to an article in Drag Times where they report energy gained from regen when stopping at the end of a 1/4 mile run in a Tesla S: http://www.dragtimes.com/blog/tesla-model-s-drag-racing-energy-usage-and-cost This is a link to calculations showing you typically should get about 10% +/- 5% energy back from regen as a percentage of energy used, which agrees with measurements I have done: http://www.diyelectriccar.com/forums/showpost.php?p=382974&postcount=45 If you do mostly highway driving then yes, 5% back as a percentage of energy used is roughly correct. The more stops and the more hills the more energy you recoup with regen as the calculations clearly demonstrate. There are different ways of expressing the energy regained by regen, as a percentage of energy used during a trip, as a percentage of total pack capacity as it appears C&C state it, and for energy regained coming down a hill it is sometimes stated in terms of percentage of energy used going up the hill as I did above, or as a percentage of the potential energy of the vehicle at the top of the hill relative to at the bottom as I did in one of the above links. These percentages all differ from each other for a given run of course due to different denominators. -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Re-EVLN-What-Click-n-Clack-know-about-regen-tp4672248p4672256.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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141028/7f68191a/attachment-0001.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)
