When the combustion engine burns 1 gallon of gasoline. How...

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Question by Killer
Submitted on 5/3/2004
Related FAQ: Gasoline FAQ - Part 4 of 4
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When the combustion engine burns 1 gallon of gasoline. How many pounds or ton per gallon is emitted from the tailpipe for each of these pollutants? Carbon dioxide, carbon moNOxide, nitrogen oxides, hydrocarbons, suspended particulates and lead. Thank You

Answer by Timmy
Submitted on 1/17/2007
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Carbon Dioxide emissions are the easiest to approximate - roughly 19.4 pounds of CO_2 per gallon of gasoline (a gallon of gasoline is about 6.2 pounds). The other pollutants (CO, NO_x, Hydrocarbons, lead, and other) largely depend on the quality of the gasoline (leaded or unleaded?) and the quality of the device burning it. The amount of CO_2 produced varies because of this too, but 19.4 lbs. CO_2 / gallon of gasoline is in the ballpark. (The extra mass comes from the oxygen that is taken into the engine.)

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