I agree with your remarks about nominal vs. working capacity. Frankly, hard specs on the Volt are not readily available, and the figures I'm using are most likely "GM vaporware." They are not clear enough for me to determine what capacity is actually used, or whether real world range is 40 miles. They are the figures thrown about. --- On Thu, 8/27/09, James R. Frysinger <[email protected]> wrote:
From: James R. Frysinger <[email protected]> Subject: [USMA:45701] Re: Wh/mile vs J/km To: "U.S. Metric Association" <[email protected]> Cc: "U.S. Metric Association" <[email protected]> Date: Thursday, August 27, 2009, 6:45 PM Are you folks using the nominal "capacity" of the vehicle batteries or the "working capacties"? In such applications one never discharges batteries entirely but leaves "several percent" in before terminating use. Else, bad things happen! On the other hand, perhaps you are using "recharge" figures, which approximate "working capacities". I apologize for my dumb questions; I have not been following this thread very closely. Jim Jason D Darfus wrote: > Sounds good to me. A while ago I calculated the energy consumption of my > diesel VW Jetta versus my all electric Vectrix VX-1 scooter: > diesel car that sips 4.7 L / 100 km @ 36.4 MJ / L energy content = 1700 kJ / > km > electric scooter using 5 kW•h (18 MJ) over 60 km range = 300 kJ / km > > First comment at > http://blogs.wsj.com/numbersguy/mpg-fits-awkwardly-in-electric-vehicle-landscape-787/ > > In addition I've sent feedback to GM expressing the desire to see the Volt > use this approach. > > > On 27 Aug 2009, at 07:55, STANLEY DOORE wrote: > >> Dear Metricators: >> Use J/km rather than Wh/mi as some news media are beginning to use. >> Here's a chance for USMA and others to promote and use of the SI. >> What do you think? >> Stan Doore > -- James R. Frysinger 632 Stony Point Mountain Road Doyle, TN 38559-3030 (C) 931.212.0267 (H) 931.657.3107 (F) 931.657.3108
