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Originally Posted by Dubyagee
Thats a great idea with rotary valving but the pneumatic design beats it by miles
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Koenigsegg is way ahead of me. He mentioned that as well as using some of the compressed air for acceleration. Impossible to know at this point if the air would be more valuable for combustion boost or direct propulsion. Somehow I think the former. If such system ever did get going, I could imagine the ability to partially charge the system before departure, depending on how much compressed air was onboard.
One thing is certain, such an engine would have a serious ECU. Balancing all of that for optimal use would be rocket science.
It also occurs to me that they're talking about using compressed air to drive the valves downward, so in that case, having a regular supply of compressed air on board would be necessary. That was always a point that struck me as difficult in the cam-less concept. Reliably pushing on those valves 25 to 35 times a second could be tough. I had thought about a rotary valve setup for that. Perhaps easier to rotate than compress the spring every time. But I could imagine other problems with that.