Posted by used red MN on October 05, 2023 at 08:38:21 from (68.46.31.28):
In Reply to: Opposed-Piston Engines posted by Geo-TH,In on October 05, 2023 at 02:28:00:
First off a ..point of interest.. article usually is made ..news.. worthy to MSN by the amount of money feeding it, NOT by whether or not it is potentially truthful. Just using common sense there is no way the design of that engine is anywhere near as low of an emission engine as the common 4 stroke engine. I may be wrong but having the greatest amount of ..fresh.. combustion air is essential to good engine combustion and secondly clean emissions. Look at what is happening in that engine design when the exhaust port opens. The cylinders are far apart, there is a huge cavity that can hold all kinds of burnt gases from the previous combustion event. Compare that to the 4 stroke engine where the exhaust stroke ends with the piston up close to the head with a very small area where hardly any combustion byproducts can remain. Of course comparing the 4 cycle to a 2 cycle, the 2 cycle does alleviate a lot of inefficiencies of the strokes that are power robbers in the 4 cycle. As far as that goes, maybe the inherent design of these engines to ..recirculate exhaust gases.. is more helpful to it having low emissions than I know.
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