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Fuel, SUV's and Global Warming Essay examples

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Fuel, SUV's and Global Warming

During the last decade, the automotive industry and many environmental agencies, such as the EPA and Friends of the Earth, have been involved in a heated debate over the regulation of emissions standards from light-duty trucks (SUV’s). While the Friends of the Earth, an international environmental activist organization that uses grassroots techniques, has worked hard to get the federal government to raise fuel economies and emission standards for SUV’s, the automotive industry has been more than willing to produce mass quantities of gas guzzling machines. According to the EPA and other environmentally concerned groups, without tighter federal government regulation of greenhouse gas emissions from SUV’s …show more content…

For example, according to the EPA, the nitrous oxide released froman SUV traps 270 times more heat per molecule in the atmosphere than carbon dioxide(1). When nitrous oxide increases in the atmosphere, more heat is trapped in the atmosphere and unnecessarily contributes to the earth’s natural greenhouse effect.

While standards have been developed to curb these emissions since 1970, it wasn’t until 1993 that standards were placed on evaporative emissions for light-duty trucks as well as tailpipe emissions. Evaporative emissions were suspected as being equally responsible for contributing to the increased amount of hydrocarbons and oxides of nitrogen in the atmosphere. According to an article in Atmospheric Environment:

Evaporative emissions are divided into five types: Diurnal, which are the emissions when the vehicle is at rest which occur due to ambient temperature changes over a typical 24-h period; Hot soak, which is driven by residual engine heat once a warmed-up engine is parked and the engine is shut off; Running loss, which occur when the vehicle is being driven; Resting loss, which is the constant at rest evaporative emissions; Refueling loss, which is the displaced vapors and drippage resulting from refueling(²).

Better technology has been developed to test levels of evaporative emissions since 1993. Now the test uses a method known as the

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