discussion was about lower Carbon Footprint, not *Zero* carbon fuels.


cheers!
e


Allan Streib wrote:
Bio fuels are still carbon-based.  Though you might argue they are 
carbon-neutral if they are made from biomass taken from the current 
environment, as opposed to fossil fuels.

Allan


On Fri, 24 Apr 2009 08:27 -0700, "ernest breakfield" 
<erne...@backyardengineering.org> wrote:
your perspective appears biased; as if you're only thinking about Petro-based fuels. ;-) the odds are they're thinking about something else completely (like BioDiesel is supposed to be, for example). the goal is to move to a fuel that has a lower overall Carbon Footprint than the current petroleum-based fuels. many folk were upset after finding out that the Emissions systems on their new 'Clean Diesels' won't accommodate BioDiesel use, and the idea is that the flexibility to use lower Carbon Footprint fuels should be part of any design from here forward.


cheers!
e


Rich Thomas wrote:
So this morning on National Propaganda Radio there was a story about CARB voting 9-1 to require "lower carbon fuels" and encouraging refiners to make "lower carbon fuels" and car makers to accommodate them.

I am trying to figure out, what exactly is a "lower carbon fuel?" Is that like methane (CH4) as opposed to any higher carbon chain molecule? Is it by weight, volume, energy content/density, what? Hydrogen?

--R

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