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Old 06-21-2013, 03:12 PM   #26 (permalink)
jamesqf
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Quote:
Originally Posted by hawk2100n View Post
A catalyst is a catalytic converter.
Strictly speaking, a catalytic converter is a device, which could have any number of different catalysts in it.

Quote:
However you are correct in that lean burn performs worse from an emissions standpoint.
That all depends on what importance you assign to different emissions. It's higher in NOx (which really matters only in densely-populated areas), but considerably lower in HC, CO, and - most importantly - CO2.
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