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Diesel exhaust fluid ("AdBlue") has no detectable odor. JH is correct however, the urea in the aqueous solution does produce a white crystalline...
There was also a report several years ago of alarmingly high losses of hydrogen during refueling (Green Car Congress: Transit Agency Finds Total...
PFI has been shown to produce very high PM emissions in some "off-cycle" conditions. Here is a graphic from a study of black carbon (BC) PM...
I may be divulging internal information that I shouldn't be, but apparently, there was a perception when the new (Obama) Administration took over...
I'm retired (2012), so I have no "pressure" to conform to any specific agenda. From my personal experience, very few operational meteorologists...
DEF can be purchased from bulk dispensers at truck stops for ~$2.699/gallon. Love's Fuel Price Search
I fully agree with this point. However -and this is just thinking out loud based on my experience as an operational meteorologist in the National...
Just to be clear, "Adblue" is not directly involved in the particle reduction system (DPF). Adblue is actually a reducing agent that reduces NOx...
There's also some uncertainty in the surface instrument records, mostly involving siting of the observation systems. For example, many if not...
I agree. It seems that anyone who steps out-of-line with the "catastrophic AGW" orthodoxy is labeled with the dreaded "D" word. This includes...
Bob, Could you please explain? I don't see why dry areas getting drier and wet areas getting wetter necessarily follows a warming scenario, even...
According to test data from EPA (Test Car List Data Files | Cars and Light Trucks | US EPA), the regulated emissions from a 2014 BMW 328d xDrive...
Regarding emissions from modern diesels, there was a very recent study of real-time emissions from T2B5-compliant diesel cars in the U.S. during...
Bob, There were fairly detailed technical data on the EA288 TDI posted on Green Car Congress a few months ago... Green Car Congress: A closer...
Couple of quick comments... Tier 2 Bin 5-compliant diesels have no detectable exhaust odor, so that is no longer an issue with new diesel cars....
Your link was the proposed rule. Apparently, it got changed slightly before it was adopted as a final rule. According to the dieselnet link I...
From my understanding, manufacturers don't HAVE to certify to LEV III until 2020, although a handful have already certified to LEV III (e.g.,...
Please provide a source for this claim. According to this source... Emission Standards: USA: Cars and Light-Duty Trucks—California ...LEV III...
http://www.arb.ca.gov/msprog/onroad/cert/pcldtmdv/2015/bmw_ldt_a0080368_2d0_u2_diesel.pdf Again, this is certified to LEV II, not LEV III, but it...
I completely agree about having NMOG and NOx combined into one standard, and using a more representative certification fuel in the emissions...
