The difference is in the Chevy Volt, just like the Prius and other similar hybrids, they use a power-split device to directly connect the ICE to the wheels. Obviously this was chosen because unlike the series hybrid, there are less conversion stages before the power meets the road. However, in the case of Obrist's technology, the benefits of only having the generator(s) connected means they can do clever tricks to optimize the efficiency that allows it to always run at the most optimal speed.
On Sat, Apr 3, 2021 at 10:44 AM Peter VanDerWal via EV <[email protected]> wrote: > Chevy used to sell a very similar vehicle. I normally have one parked in > the driveway, but my wife drove it to work today. > > > My PGP public key: https://vanderwal.us/evdl_pgp.key > > April 2, 2021 11:25 AM, "(-Phil-) via EV" <[email protected]> wrote: > > > I worked with this company on an amazing series-hybrid system that uses a > > more conventional engine, but it's performance is amazing: > > https://www.obrist.at/powertrain > > https://youtu.be/cuxR5qy4yu4 > > > > Their demonstrator is using a Tesla Model 3. Probably the first Tesla to > > ever have a gas tank! I have to admit, when I first heard what they were > > trying to do, I was pretty pessimistic, but their system is a great > > stop-gap and will make it possible to get more EVs out there for lower > > cost, sooner. Even if we wanted to make the global fleet all-electric, > > there just isn't enough materials to make all the batteries for > > full-electric cars. But if each one uses only a small pack which covers > > > 75% of the driving, it means you can make a LOT more cars, and you also > > don't have the chicken-and-egg DCFC charging network issue. > > > > On Fri, Apr 2, 2021 at 11:01 AM Robert Bruninga via EV < > [email protected]> > > wrote: > > > >> I guess I had seen this before, but I dont see why it cannot be really > >> built efficientloy and haved a great market in the EV range extending > >> application: > >> > >> Could free-piston range extenders broaden the electric-truck horizon? > >> (greencarreports.com) > >> < > >> > https://www.greencarreports.com/news/1131725_could-free-piston-range-extenders-broaden-the-electric- > >> ruck-horizon > >> > >> a free piston flying back and forth with a magnet inside coils sure > makes > >> for a one-moving-part gasoline generator (well plus valves)... And > >> could be made very modular with the only interfaces a gas-fill line, the > >> electric connections and an exhaust port. Drop it in and go. > >> > >> Bob > >> -------------- next part -------------- > >> An HTML attachment was scrubbed... > >> URL: < > >> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210402/8240573f/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 > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210402/13e2eee1/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 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210403/4bc755b4/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
