Exhaust Fleet Ozone Resource 
Green Car Congress
JUNE 8, 2023
A fleet average nonfuel nonexhaust VOC emission factor of 58 ± 39 mg veh –1 km –1 was calculated for the missing source, which is greater than the total of all VOCs emitted from vehicle exhausts and their associated evaporative fuel losses. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g.,
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 test fleet showed statistically significant effects for some pollutants, but not for others.
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.
Blink Charging
NOVEMBER 28, 2023
Vehicle fleets across the United States are transitioning from internal combustion engine (ICE) to electric vehicles, and that includes school bus fleets. Many school districts use diesel buses for fuel efficiency, but even diesel exhaust was classified as a known carcinogen to humans in 2012.
Green Car Congress
DECEMBER 23, 2016
These technology examples, along with numerous cost-effective technological advances in exhaust after-treatment technologies, demonstrate that there are feasible approaches where GHG reductions and fuel efficiency do not have to be sacrificed to achieve greater NO x reductions. —EPA memorandum in response to petitions.
Green Car Congress
JUNE 1, 2017
Using urban eddy covariance measurements, the researchers found that traffic-related NO x emissions in current operational air quality models can be significantly underestimated by up to a factor of 4 across countries with a sizeable fraction of diesel-powered cars in their fleet.
Green Car Congress
DECEMBER 23, 2013
The chemistry of a fuel impacts the emissions from an engine, with the most obvious example being unburned or partially burned fuel which is a major component of engine exhaust. Engine-out exhaust contains typically 1?3% via the unburned or partially burned fuel which is a major component of engine exhaust. —Hubbard et al.
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