One more time... Regfen is only of value when you have to stop and you finally have to give up all that kinetic energy.
Coaasting makes best sense by all measures of physics. Regen when NOT needed is inefficient. Maybe you only get back 90% from energy to electric then 90% efficiency to charge the battery. then 90% conversion from battery to electricity then 90% from the electricity to drive the motor. 90% * 90% * 90% * 90% is only about 65% efficient compared to 100% for coasting (of course, then all the drag, road, etc losses) End-Of-Story.. On Tue, Aug 24, 2021 at 6:24 PM Justin Kenny via EV <[email protected]> wrote: > > I would be curious to see some real world comparison/results doing a drive > like that coasting as much as possible vs. using full regen. I used to > drive a 2011 Leaf, and I struggled to get more than 4mi/kWH driving as > efficiently as I could (minimizing regen by coasting) with no A/C, etc., > yet now I drive a Model 3 and I find it almost impossible to get less than > 4mi/kWH with all the comforts available and driving like a maniac ;) > Clearly the vehicle's efficiency has a way bigger impact, but of course it > is probably still better for the environment to be reusing a 10 year old EV. > > - Justin > > > > ------------------------------ > > > > Message: 3 > > Date: Tue, 24 Aug 2021 19:06:15 +0000 (UTC) > > From: Lawrence Rhodes <[email protected]> > > To: "[email protected]" <[email protected]> > > Subject: Re: [EVDL] Regen Efficiency vs Coasting > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset=UTF-8 > > > > When you are at the top of a hill after the climb the best way to descend > > is to select no regen until you reach the speed limit and then use regen to > > keep your vehicle at the speed limit. My Leaf has 6 regen selections. N for > > no regen, D for some, Deco for more, B and Beco for the most. Using these > > settings I can in a way coast and not use my mechanical brakes for long > > distances down hill. EVs are never in neutral unless you have a conversion > > with a clutch. If the vehicle moves the motor turns. That is why you can't > > flat tow an EV. So the most efficient way down a hill is No regen until you > > are in fear of a speeding ticket. Lawrence Rhodes > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210824/07f68af7/attachment.html> > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
