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The latest version of Argonne National Laboratory's GREET (Greenhouse gases, Regulated Emissions, and Energy use in Technologies) model was recently released (https://www.greencarcongress.com/2021/10/20211012-greet.html). Based on this latest GREET model (GREET_2021), the following are...

For anyone interested, a European firm (Paul Scherrer Institut) has developed an on-line life-cycle assessment (LCA) modeling tool called "carculator" - https://www.alphagalileo.org/en-gb/Item-Display/ItemId/192598 . The tool has an online graphical user interface and can be used to assess...

...targeting nitrogen oxides emitted by cars and power plants could initially actually increase harmful [wintertime PM2.5] air pollution, the researchers reported in their new paper, out today in the journal Geophysical Research Letters....

(bold emphasis added) http://regi.com/news/2018/05/02/renewable-energy-group-launches-reg-ultra-clean-diesel

As has been discussed on this board many times, it has been known for decades that large reductions in NOx emissions in certain locations can lead to an increase in ambient ozone levels ("weekend effect"). This mostly occurs in large metropolitan areas. A paper just published in the Proceedings...

http://www.detroitnews.com/story/business/autos/foreign/vw-emissions-scandal/2017/02/14/volkswagen-diesel-deal/97908466/

http://biodiesel.org/news/news-display/2016/09/14/new-data-reaffirms-carbon-benefits-of-biodiesel

http://www.alphagalileo.org/ViewItem.aspx?ItemId=162275&CultureCode=en

http://www.greencarcongress.com/2016/01/20160103-fulcrum.html

I have seen multiple comments on some "green" car sites which claim that the exhaust of "clean" diesel vehicles still has very noticeable "diesel fumes" smell. When I have challenged the characterization of the exhaust as having any smell whatsoever, I have been accused of either lying or have...

The Final Advanced Collaborative Emissions Study (ACES) Phase 3 Report has been issued. http://www.healtheffects.org/Pubs/Press%20Release%20ACES%202015.pdf

Mercedes-Benz S500 is the first production vehicle to use a gasoline particulate filter (GPF) in Europe... http://www.dieselnet.com/news/2014/08mercedes.php

WASHINGTON - The U.S. Environmental Protection Agency (EPA) today [6/12/2014] announced that Ford Motor Company (Ford) is revising the fuel economy (mpg) estimates for six vehicle models to correct errors found in an internal Ford audit. Ford is required to correct fuel economy labels on...

Source: Redon, et al. (2014) “Meeting Stringent 2025 Emissions and Fuel Efficiency Regulations with an Opposed-Piston, Light-Duty Diesel Engine.” SAE Technical Paper 2014-01-1187, http://papers.sae.org/2014-01-1187/ (abstract) More info available at...

Final Rule for Tier 3 has been adopted... http://www.epa.gov/otaq/tier3.htm

The Advanced Collaborative Emissions Study (ACES) Final Report has been released (http://www.greencarcongress.com/2013/12/20131204-crc.html). Full report available at http://www.crcao.org/reports/recentstudies2013/ACES%20Ph2/03-17124_CRC%20ACES%20Phase2-%20FINAL%20Report_Khalek-R6-SwRI.pdf...

We have discussed the relationship between NOx, VOC, and ambient ozone for many years at TDIClub ("weekend ozone effect"). There is a new study which appears in the October 2013 issue of Atmospheric Environment which examines the effects of near-zero emissions during a several year study of Tel...

http://www.greencarcongress.com/2013/09/20130905-vw.html

http://www.ec.gc.ca/default.asp?lang=En&news=39A1F461-3AB8-451D-BE25-8915C241C870

http://www.greencarcongress.com/2013/04/iart-20130408.html