Quote:
Originally Posted by Icedog_16
According to this article I just found, EVs are about 21% efficient well-to-wheel vs 19% for an IC engine running CNG, which is practically a wash in my book - especially if you account for the environmental impact and additional cost of the EV battery pack. Oh, and, according to the article, the well-to-tank efficiency is about half that of the CNG IC vehicle, so I don't think the ten times more efficient stat is correct.
Mechanical Engineering Power -- June 2003, feature, "Gauging Efficiency, Well to Wheel"
Actually, a pretty good article. Unfortunately, it doesn't touch on gasoline engines and I'm pretty sure that gas is more energy-dense than CNG. |
CNG burns much cleaner and more efficient then gasoline. There also aren't not that many CNG cars on the road, so I'm not sure why they used that as an example... keep in mind that interest in developing hybrid,battery,solar and other green technologies have only started the last 5-10 years, so to dismiss it before it even started or to compare it to a well established technology is a little premature