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Old 09-19-2021, 02:09 PM   #89 (permalink)
It's all about Diesel
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Originally Posted by Isaac Zachary View Post
Maybe because of higher surface temps, but also because it would be hard to keep fresh air out of the exhaust.
Not sure to which extent fresh air on the exhaust of a 2-stroke with direct injection would be much worse than unburnt mixture on either a carburettor-fed one, or even if either a TBI or port-injection were fitted.

Three way catalytic converters work best at reducing NOx in an oxygen starved environment.
Adding EGR to a 2-stroke engine would be as much of a PITA or even worse as for a Diesel engine.
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