Green Car Congress
DECEMBER 23, 2016
Earlier this year, the US Environmental Protection Agency (EPA) received several petitions from state and local government agencies from across the country and other organizations to increase the stringency of the on-highway heavy-duty engine NO x emission standards from 0.2 —EPA memorandum in response to petitions.
Green Car Congress
AUGUST 22, 2014
The US Environmental Protection Agency (EPA) released the Second Integrated Urban Air Toxics Report to Congress—the final of two reports required under the Clean Air Act (CAA) to inform Congress of progress in reducing public health risks from urban air toxics (also referred to as hazardous air pollutants or HAPs).
Green Car Congress
APRIL 11, 2023
The suspected cause of these preventable absences is exposure to high levels of diesel exhaust fumes, which can leak into school bus cabins or enter buses through open windows. Applying their results nationwide, the researchers extrapolated that replacing all pre-2000 model school buses would lead to more than 1.3
Green Car Congress
SEPTEMBER 9, 2011
US EPA Region 9 8-hour ozone trends, 1979-2000. Source: EPA. In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 EPA said that the air districts are making steady progress toward meeting the 0.08 Click to enlarge. parts per million (ppm) by 2024.
Green Car Congress
SEPTEMBER 1, 2010
microns—less than a human hair which averages 70 microns in diameter—is the product of a variety of sources including particles in the exhaust of diesel engines. The ARB report and its methodology were based on recent science assessments completed by the US Environmental Protection Agency (EPA). Fine particle pollution, smaller than 2.5
Green Car Congress
AUGUST 14, 2012
One locomotive in this series of 25 will be based in Roseville to test the combined use of exhaust gas recirculation (EGR), diesel oxidation catalyst (DOC), and diesel particulate filtering (DPF). In 2008, EPA estimated the social cost of the new program (rail and marine) will be approximately $740 million in 2030. Earlier post.)
Green Car Congress
OCTOBER 7, 2014
TDI Clean Diesel EA288 engine ( earlier post ) with an EPA-rated highway fuel economy rating of 46 mpg with the manual transmission (45 mpg automatic). In other words, there is not a separate intake or exhaust camshaft. This means we have on the one camshaft one intake valve and one exhaust valve. Top: Valve layout. crank angle.
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