Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Generally speaking, carbon monoxide is the result of incomplete combustion. In gasoline automotive engines, three methods of limiting it are:
  • Combustion chamber shaped to promote swirling of the gasses.
  • Lean mixture (more air per unit of fuel).
  • Catalytic converters to convert CO to CO2.

I'm not sure that swirl techniques are practical on direct injection engines (including diesels), because the burning happens on the surfaces of the fuel droplets before they get a chance to evaporate.
by asdf on Sun Jul 12th, 2009 at 09:56:56 AM EST
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