230 mpg in the Volt? Chevy fudging the numbers?

[aerohead]

Originally Posted by cfg83

aerohead -



I'm curious. Based on this assumption of line losses, what would the "energy balance MPG" be of the all-electric GM EV1? For example, how many kilowatts per 25-miles for the EV1 under the same driving cycle?

CarloSW2

I don't have those materials with me.If memory serves me,the EV-1 lead acid pack was rated at 16.3 kW @ 53-A-hours and 312-VDC.An insulated gate,bi-polar MOSFET inverter of 0-20,000 Hz was used for the AC induction motor I think.--------- The pack had a energy density equivalent to 0.50 gallons of gas.That car was rated at 79-mile range.It would do ( to 80% depletion) 250 miles at 25-mph(10-hours) and 100 miles(1.818-hours) at 55mph constant.EPA 30 City/25 Hwy.CAFE was 50-70 City,70-90 Hwy.------------ Since it was a pure electric it comes under a different rubric.The energy and mpg figures come from SAE Standard J1634 of 1993.I do not have that,as my SAE Handbook date to 1987.Sorry!------------------- Doing the conversions is something I'm working on.A gallon of gas has 114,132 Btus.A kW-h is 3416 Btus?--------------------- From 85% depletion,and 220-V/30-Amp charging station,it took 3-hours to fully recharge the pack. ------------- I'll try and get back to you on this,or maybe some of the members who are more electronically savvy can jump in on this one.