Assuming I have the right numbers via T3h Web (I checked multiple sources, please do feel free to check my work), a US gallon of gasoline is about 125,000 BTU, which is 37 kWh. They're claiming 125 miles at 22kWh. So they're claiming effectively... 210mp(us)g equivalency, more or less.
According to Wikipedia, the current record for any production automobile is the 78 mp(US)gallon diesel (the Volkswagen Lupo 3L). Diesel engines run at 45% efficiency; assuming 100% efficiency in that case yields 173mp(us)g equivalent diesel, but diesel has more Kcal per USG than gasoline (129,500), so it doesn't match up properly with the figure above for efficiency considerations. Normalising across calories per gallon, that yields about 167mp(us)g gasoline at 100% efficiency, interpolated from the record-holding liquid fuels car, or:
2.79 times the most efficient (in mp(us)g) liquid fuels production vehicle ever made, or: 26.7% more efficient than 100%-efficient gasoline consumption in the most fuel-efficient gasoline scenario to date.
So. I'm ... curious about these claims. Not saying it's impossible; just saying I'm... very curious.
Please do feel free to point out errors in my math.
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
branchandroot
(no subject)
Date: 2008-01-07 11:12 pm (UTC)Assuming I have the right numbers via T3h Web (I checked multiple sources, please do feel free to check my work), a US gallon of gasoline is about 125,000 BTU, which is 37 kWh. They're claiming 125 miles at 22kWh. So they're claiming effectively... 210mp(us)g equivalency, more or less.
According to Wikipedia, the current record for any production automobile is the 78 mp(US)gallon diesel (the Volkswagen Lupo 3L). Diesel engines run at 45% efficiency; assuming 100% efficiency in that case yields 173mp(us)g equivalent diesel, but diesel has more Kcal per USG than gasoline (129,500), so it doesn't match up properly with the figure above for efficiency considerations. Normalising across calories per gallon, that yields about 167mp(us)g gasoline at 100% efficiency, interpolated from the record-holding liquid fuels car, or:
2.79 times the most efficient (in mp(us)g) liquid fuels production vehicle ever made, or:
26.7% more efficient than 100%-efficient gasoline consumption in the most fuel-efficient gasoline scenario to date.
So. I'm ... curious about these claims. Not saying it's impossible; just saying I'm... very curious.
Please do feel free to point out errors in my math.