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For what it's worth, Argonne National Laboratory's GREET model assumes a 40% increase in fuel mileage for gasoline-hybrid and 60% increase...
If I'm not mistaken, the 328d has stop/start?
The 2014 BMW 328d (diesel) technically meets the emission requirements for SULEV based on official CARB certification data (even though it's...
Most of the particles emitted by petrol engines are also micro particles (actually mostly in the nano-particle size range). DPF is very effective...
Diesel fuel has about 10% more carbon/energy per unit volume, but gasoline actually has slightly more per unit mass (gram is a mass unit). Brake...
NO2 is somewhat heavier than air, and a conversion would need to be done to convert from micrograms/m3 to ppb, but it appears that EU's one-hour...
It's fundamental atmospheric chemistry that NOx can either create or destroy ground-level ozone. VOCs are what interfere with the ozone/NOx...
Last I knew, much of Europe was VOC-limited with respect to ozone (photochemical smog) formation (The weekend effect). As such, reducing ambient...
That's not universally true. Euro5b & Euro6 standards for diesels for both CO and PM are more strict than Tier 2/Bin2/LEV II SULEV emission...
I know there are some very respectable scientists who subscribe to this theory, including the current Science Advisor in the U.S. Administration....
Wikipedia says the skill of NWP models is about six days (Numerical weather prediction - Wikipedia, the free encyclopedia). Based on my...
The "normal" max/min temps and daily precip used by the National Weather Service and what you see on your local weather station is based on a...
That's not going to change until this amplified ridge west/trough east (CONUS) long wave pattern breaks down, whenever that may be.
Need to correct myself. According to the full paper, the tunnel has been closed to heavy-duty traffic since 2008 for security reasons. Thus, no...
That may be true, but it specifically states in the full paper... (Page 54-55) I haven't seen anything that specifically addresses diesel...
I'm not familiar enough with gasoline engine three-way catalytic converters and diesel oxidation catalysts to know what precious metals are used...
Yes, I should have specified 2014 model year.
I guess I'm not following you AG. According to the dieselnet link I posted previously, Euro 5b was implemented in 2011 (September) which cut the...
Actually, I would say they apparently had to give GDI an order-of-magnitude leeway over what diesels have had to meet since 2011, for the first...
Yes, the proposed PN limit for DI gasoline from 2014-2017 is a factor of 10 higher than the diesel limit, but will then be reduced to the diesel...
