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Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, [1] or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe , flue gas stack , or propelling nozzle .
Environmental regulations in developed countries have reduced the individual vehicle's emission. However, this has been offset by an increase in the number of vehicles, and increased use of each vehicle (an effect known as the Jevons paradox). [3] Some pathways to reduce the carbon emissions of road vehicles have been considerably studied. [5]
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines. The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides.
Gas poisonous by inhalation means a material which is a gas at 20 °C or less and a pressure of 101.3 kPa (a material which has a boiling point of 20 °C or less at 101.3kPa (14.7 psi)) and which: Is known to be so toxic to humans as to pose a hazard to health during transportation, or
The Environmental Protection Agency on Friday set strict emissions standards for heavy-duty trucks, buses and other large vehicles, an action that officials said will help clean up some of the ...
The formation rate is primarily a function of temperature and the residence time of nitrogen at that temperature. At high temperatures, usually above 1300 °C (2600 °F), molecular nitrogen ( N 2 ) and oxygen ( O 2 ) in the combustion air dissociate into their atomic states and participate in a series of reactions.
Emissions from diesel vehicles are more harmful than those from petrol vehicles. [ 40 ] [ 41 ] [ 42 ] Diesel combustion exhaust is a source of atmospheric soot and fine particles , which is a component of the air pollution implicated in human cancer, [ 43 ] [ 44 ] heart and lung damage, [ 45 ] and mental functioning. [ 46 ]
Despite a long string of recalls that began more than two decades ago, about 6.2 million vehicles with potentially dangerous Takata air bag inflators remain on U.S. roads today. On Wednesday ...