Graduate Thesis Or Dissertation
 

A determination of an exhaust hydrocarbon reactivity index for a vehicle powered by gasoline and liquefied natural gas

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/df65vc02r

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  • Past research has shown that automobile exhaust is composed of a mixture of many different hydrocarbons and that some of these hydrocarbons contribute more to the smog problem than others. Natural gas has been proposed as an alternative to gasoline as a motor fuel, and it was desired to confirm the difference in smog forming potential between that fuel and gasoline. A vehicle that runs on either fuel was tested for exhaust hydrocarbons by an NDIR analyzer and by a chromatographic technique that allowed quantitative determination of most of the C₁ to C₁₀ components. A smog reactivity scale was applied to each component. The results show that the reactivity index using the natural gas fuel is only about 1/40 of that using gasoline, but that the hydrocarbon concentration did not change appreciably.
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