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The weird part of this is that if you accept higher NOx emission, you can cut fuel usage by ~20%. Since matter does not disappear, this also has to cut CO2 emis
by vlehto 11y ago
The weird part of this is that if you accept higher NOx emission, you can cut fuel usage by ~20%. Since matter does not disappear, this also has to cut CO2 emissions by similar amount.
CO2 has global warming potential for at least hundred year scale. NOx has chemical half life of decade or two.
WHO isn't really sure how much NOx you have to emit before it's dangerous. Heating is however more culpable right now than vehicles.
I can't decide if Volkswagen is shitty thief or hero. It seems to be that the NOx fuss might be overblown and the costs in CO2 emissions could be far worse. Or not. Could someone enlighten me?
- selimthegrim 11y agoExactly my thoughts. I wish VW had had the balls to use this to lead a discussion about lowering the cost of SCR on vehicles. That and the complete lack of regulation of particulate emissions on the supposed alternative GDI engines really galls me as a 2014 Jetta TDI owner
- vlehto 11y agoYes it seems weird. "We use this NO2 as indicator of particulate, as it's too difficult to measure directly.." Frankly I would not be surprised if Exxon, BP and Shell would have lobbied these emission regulations. After all they get to sell 20% more diesel. But again I might be completely wrong.