Hearted Youtube comments on Future Vision (@F_Vision) channel.
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I was glad when, a third of the way through the video, he said it's a 2-stroke engine, not a 1-stroke. Apart from the opposed piston arrangement, which complicates the design, It has fairly classical 2-stroke type scavenging, opening the inlet and exhaust ports at the same time, so it is unlikely to be as efficient as a 4-stroke, as a small amount of the uncombusted intake gasses will escape through the exhaust port before it closes. The video says at one point that it doesn't burn oil - which is an advantage - no quibbling about that. However, the video doesn't expand on how that is achieved. Does it have a sump? My first thought was "Does it use 2-stroke oil?" - but I guess it doesn't. However, pistons do need lubricating. It says, though, that the combustion chamber in a regular 2S is located above the piston, and combustion energy is transferred to the piston, but the conbustion chamber doesn't contribute to the motion. It only absorbs the heat generated - but this engine has pistons on both sides of the combusion chamber, allowing more efficient absorbtion of combusion energy. I guess it runs a lot hotter, then! Is that good? Most engines have cooling, either by a water jacket and radiator, or by cooling fins. How does this one get rid of the heat?
However - regardless of its advantages, it has a bigger problem than that! In a few years, it looks like internal combustion engines will be banned in new cars, so this engine has a future of about 10 years at best. Probably less! When motorists stop buying fuel, a lot of fuel stations will close. Fuel will become difficult to find - and its price will go up, so all I.C. engines will become unpopular - including ones with a "wavy component".
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