Diesel Exhaust Effects

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Diesel exhaust is a major contributor to air pollution and health effects associated with air pollution. To understand the dangers of diesel exhaust, you have to know what is in the fuel first and why people choose to use it. Many studies have shown that diesel fuel may be or is a cause for concern. However, scientists have also come up with different ways to prevent the continued use of diesel fuel. Many people will not agree with the expulsion of diesel fuel, but they must understand the adverse effects it may have. People cannot judge something until they know all of the facts of that subject. Diesel fuel is made from petroleum “which originates from decomposed vegetation that has been stored and altered in the upper strata of the earth for thousands of years” (Farrauto). Two primary products of petroleum are diesel and gasoline; both are used to fuel vehicles. “The fuels are made by separating and chemically changing petroleum compounds, a process referred to as refining (Farrauto). Diesel and gasoline are both made up of many different hydrogen-carbons, which are “compounds of consisting of hydrogen and carbon elements” (Farrauto). However diesel carbon atoms are in longer chains than gasoline. “Diesel chains have 14 carbon atoms whereas gasoline chains have 9” (Farrauto). The main differences between diesel and gasoline are as follows: “a) A diesel Engine takes air into the cylinder and compresses it. Fuel is then injected directly into the cylinder. The heat of the compression lights the fuel spontaneously. A gasoline engine takes in a mixture of gas and air. The fuel and air are mixed outside of the cylinder; once they are both injected they require a spark to ignite. B) A diesel engine uses a much higher compression ration than a gasoline engine. The heat created in a diesel engine by this higher compression is therefore, much greater than

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