Green Car Congress

JANUARY 27, 2015

exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. The study exposed laboratory rats 80 hours a week, for up to 30 months, to emissions from a heavy-duty diesel engine meeting 2007 US EPA standards using new filters and other control technology.

Exhaust 150

Exhaust Diesel Engine 2007 150

Cars That Think

NOVEMBER 16, 2021

If they meet all the pledges they've made for emission reductions by 2030, global temperature rise will be at 2.4° We see it as similar to the ozone hole problem, where we really needed a tight, science-based focus on the limits to human inputs to the system--and howthose inputs affected the ozone layer's ability to keep people safe.

Climate 144

Climate Climate Change Mariner Pollution 144

Green Car Congress

JULY 19, 2009

Using biodiesel in construction vehicles offers promising environmental benefits in terms of reduced tailpipe emissions as well as reductions in fuel cycle emissions of selected pollutants, according to a new study by researchers at North Carolina State University. Local urban tailpipe emissions are estimated to be: 24% lower for HC.

Pollution 150

Pollution Vehicles North Carolina Diesel 150

Green Car Congress

JUNE 8, 2011

The article is in press in the Journal of Geophysical Research-Atmospheres , a publication of the American Geophysical Union. Houston, with a mix of petrochemical facilities, sprawling suburbs, and traffic jams that stretch for miles, has some of the highest levels of ground-level ozone and other air pollutants in the United States.

Houston 247

Houston Wind Pollution 2000 247

Green Car Congress

JULY 18, 2010

Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. VOC emissions would have been reduced by 57 tpd. For other areas, where PM2.5

Denver 170

Denver Ozone PHEV Colorado 170

Green Car Congress

MAY 23, 2010

It is also a critical factor in meeting evaporative emission requirements. Evaporative emissions from gasoline—volatile organic compounds (VOCs)—are precursors to the formation of tropospheric ozone and contribute to ground-level ozone. Energy Fuels , Article ASAP doi: 10.1021/ef100254w. Mueller and O.

Alcohol Blend 210

Alcohol Blend Gasoline Ozone Fuel 210

Green Car Congress

AUGUST 9, 2009

Emissions of nonmethane hydrocarbon compounds to the atmosphere from the biosphere exceed those from anthropogenic activity. Isoprene, a five-carbon diene formed naturally in plants and animals and a precursor of ozone, contributes more than 40% of these emissions. Tags: Climate models Emissions Health. John Seinfeld.

Climate 150

Climate New Zealand Denmark 2009 150

Green Car Congress

APRIL 22, 2009

Methyl halides are naturally produced by a number of organisms; the enzyme responsible for this production—methyl halide transferase (MHT)—has been studied in the context of the environmental production of methyl halides, which contribute to ozone depletion. Article ASAP doi: 10.1021/ja809461u. Mirsky, Daniel V.

Engine 150

Engine Fuel San Francisco Convert 150