Emissions Exhaust Fleet Ozone 
Green Car Congress
JUNE 8, 2023
In a recent open-access paper published in ACS’ Environmental Science & Technology , researchers from the University of York report that alcohols in windshield washer fluid account for a larger fraction of real-world vehicle emissions than previous estimates have suggested. —Cliff et al.
Green Car Congress
OCTOBER 1, 2019
Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.
Green Car Congress
JULY 18, 2022
The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The vehicle test matrix had provisions for five vehicles on each emissions standards category (i.e.,
Green Car Congress
DECEMBER 23, 2013
FTP cycle-weighted tailpipe emissions of N 2 O, NO x , and the sum of NMOG and NO x. The minimum in NO x and NMOG emissions for midlevel ethanol blends points to future opportunities for emission reductions from FFVs. Credit: ACS, Hubbard et al. Click to enlarge. E40); and the new range for high-level ethanol blends (E55, E80).
Green Car Congress
JANUARY 28, 2014
Five technology paths for very-low-NO x and GHG emissions from heavy-duty natural gas engines. The “Pathways to Near-Zero-Emission Natural Gas Heavy Duty Vehicles” report, authored by GNA on behalf of Southern California Gas Co. An 80% reduction of GHG emissions is targeted for 2050, relative to 1990 levels. Click to enlarge.
Green Car Congress
MAY 20, 2010
The program is geared to help small California-based fleets replace their older, polluting trucks with newer, cleaner models. Approximately $28 million is available through the program to fund truck replacements or exhaust retrofits statewide. VIP is part of the state’s overall plan to cut toxic diesel emissions 85 percent by 2020.
Green Car Congress
JUNE 1, 2017
Traffic contributes more to NO x emissions in Europe than previously thought, according to a new study by a team at the University of Innsbruck. It has been a challenge to determine how much each polluter contributes to the emission output. An open-access paper on their work appears in Scientific Reports. —Thomas Karl.
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