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The Clean Air Act of 1963 (CAA) was passed as an extension of the Air Pollution Control Act of 1955, encouraging the federal government via the United States Public Health Service under the then-Department of Health, Education, and Welfare (HEW) to encourage research and development towards reducing pollution and working with states to establish their own emission reduction programs.
It uses tiers to identify emission standards for cars, trucks and other motor vehicles. [8] In 2014, the EPA published its "Tier 3" standards for these vehicles, which tightened air pollution emission requirements and lowered the sulfur content in gasoline. [9] EPA has separate regulations for small engines, such as groundskeeping equipment.
2 pollutant concentration monitor and a volumetric flow monitor. For NO x, both a NO x pollutant concentration monitor and a diluent gas monitor are used to determine the emissions rate in weight per volume or weight per heat value (for example lbs/million Btu, lbs/ft 3, kg/kWh or kg/m 3). Opacity measurements are sometimes required, depending ...
The following is a list of diesel-electric locomotives that meet or exceed EPA Tier 4 locomotive emissions regulations. Pages in category "EPA Tier 4-compliant locomotives of the United States" The following 5 pages are in this category, out of 5 total.
Engine manufacturer Cummins Inc. has agreed to pay a $1.675 billion penalty for allegedly installing "defeat devices" on approximately 1 million pickup trucks to cheat emissions tests.
[2] [3] In many jurisdictions, the term non-road engine is assumed to refer to the engines that have mobility or portability, which is separated from the term stationary engine. [4] The definition of non-road engine may explicitly exclude certain non-road vehicles such as aircraft , locomotives , and ocean-going marine vessels .
The EPA said that under its final rule, the industry could meet the limits if 56% of new vehicle sales are electric by 2032, along with at least 13% plug-in hybrids or other partially electric ...
A CATI PEMS being strapped down inside a vehicle. A portable emissions measurement system (PEMS) is a vehicle emissions testing device that is small and light enough to be carried inside or moved with a motor vehicle that is being driven during testing, rather than on the stationary rollers of a dynamometer that only simulates real-world driving.
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