Originally posted by dellowm:
For all who are interested. Sulfur (in gasoline) that burns in combustion produces SO2 (sulfur dioxide) which in water becomes H2SO4 i.e sufuric acid. No rotten egg smell.
Sulfur in gas that makes its way to cats in raw gas is catalyzed to H2S hydrogen sulfide and eventually to oxide form if cat can handle volume and has an O2 supply. Thus rotten egg smell may be combination of a too rich an air fuel mixture , higher sulfur content and possibly low efficiency cats.
This is interesting, I'm a freshman in college and going into engineering so I am just learning the details of this very process in Chem 115. It's a bit daunting to look at some of this stuff, gotta work my way up the food chain of education...
