Tier II bin 5 standard is at 0.01 gram particulate per mile. This would be 500 grams for 50,000 miles. Diesels must come in below that level - which they do.
Due to calculations done today, I find the 0.1 g/m^3 incorrect. It is much lower. Using above mass % as proxy and calculating for Jetta diesel epa mpg (via CO2/mile) with 0.1 g/m^3, I get many multiples higher than regulatory standard limits on particulate. 0.1 g/m^3 has to get thrown out - it is inaccurate for on-road vehicles by a large multiple. It also wasn't matching the mass fraction it should be by at least one order of magnitude.
Well I didnt know what kind of diesel is stated in that article aswell, but Im guessing its an old one. If Zavys calculation is ok, then 0.1g/m3 would translate into about 0.5g/mile or about 0.3g/km which is twice the standard EU had in 1992.
Well truly reducing emmision by 15 or 30 in the last 20 years is quite a feat and its all good. But still one cant say it emits 0 pollution.
Anyway, translating 0.01g/mile into mass ratio would give something like 0.003g/m3 or 3ppm (0.0003%). EPA max level for "good" air quality with PM is about 14micrograms per m3. And our "modern" diesel is emitting about 3000, so quite more than "good" air.
The most polluted by PM that I can find in wikipedia is some city in mongolia which stands at about 300.
And yeah, the 2005 1.5liter turbodiesel I drive usually has unnoticable exhaust. But then come chilly mornings and im reversing into a black cloud.
Oh and hey blackhat, one bucket of electricity please! If you can.
You dont have to be a rocket scientist, to be a rocket scientist.