Exhaust emissions

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Does anyone know of a site to obtain a list of emissions in car exhast for a gasoline engine. We make a device to measure methane in low (ppm) concentrations and need to determine if car exhaust will interfere with the measurement.

Thank you

posted by  ggmidgley

how precise are you looking for?

posted by  tbaxleyjr

If the engine is running properly, I don't think there should be any methane at all. Of course there is no such thing as an ideal engine, but I think the biggest problem would be if the engine isn't running correctly, and then I can't imagine there is any precise documentation of a poorly running engine?

Just thinking out loud...

posted by  dvdrose18

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