Damon wrote: What combinations of fuel and engine produce the least amount of pollutants? In this question, i am including the impacts of actually producing/transporting/etc. the fuel, as well. (i remember someone mentioning this a while back, but can't find it in the archives). How does natural gas, or possibly even fuel cells weigh in to the global-efficiency calc compared to your standard gas and diesel? It sounds like a simple TDi is a viable option for these criteria, but i want to see even *more* numbers! :-) ------------- reply ------------ Where I live, western Canada, there are several alternative fuels currently available. They are: propane, methanol (not sure what percentage) and natural gas. Propane is by far the most common, the distribution infrastructure is well established so availability is not a problem. Natural gas, however, is the cleanest followed by propane. My vanagon is dual fuel, burns either propane or gasoline. I've had the van on a gas analyzer and propane is much cleaner than digifant. I suspect modern engines with OBD4 are cleaner than my propane system though. An added bonus is that propane is currently 1/2 the price of gasoline. I've even got my old BMW on propane. Pictures of the van at this URL http://www.telusplanet.net/public/gary2a/rack/propane/propane.htm
Gary Lee http://www.telusplanet.net/public/gary2a/rack/vanagonrack.htm |
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