On 4 May 2017 at 15:28, John Lussmyer via EV wrote: > But only if you have 100% efficient regen.
Obviously you're not going to get 100% efficient regen, but you'd be surprised how close you can get under the right conditions in a well designed real world vehicle. I've posted about this in the past, but here it is again: http://www.evdl.org/pages/evergreen.html Axel Krause of Brusa drove his EV over the Swiss Alps in 1997. The graph on the page above is a little confusing; what it shows is the deviation of the car's amp-hour counter from what he usually got in similar driving on flat ground. You can see that by the end of the trip, the amp-hours logged were right back to what they'd normally be for a trip of that length taken on the flat. The gist of it is this: thanks to the drive system's regeneration, almost all the extra energy he used going up the mountain, he got back on the way down. (No doubt this wouldn't have worked as well if he'd started out the trip with a descent. With the battery already full, there'd be nowhere to store the kinetic energy.) On the average his outbound trip (Gams to Stabio) used 10.7kWh / 100km. That's a more-than-respectable 173 Wh/mi. It's also from the mains, not just from the battery, so it includes the charger efficiency. Not bad. His average speed was 66km/h, or about 41mph. 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)
