Quote:
Originally Posted by rwest
I’m not the brightest guy here or most places for that matter, but would two moving masses have twice the friction with the same amount of force?
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Good point. I'm not either. just free-thinking here.
1). That didn't seem to slow down the Porsche/Ferrari tiny 12cyl which make over a thousand hp.
(but they seem to be going with larger and less cylinders with hybrid these days)
2). A mono-block makes more sense than two pieces bolted together with a seal at the highest point of pressure..ie the head gasket. That requires extra bolts running through the block and getting in the way of coolant and oil passages and other structure. All that has to be worked around.
3). Combustion chamber with piston shape is all designed around the poppet valves getting in the way. Plus the swirl of compression gasses. Two opposing masses of air would mix better and naturally create a higher compression ratio. I'd guess. The pistons could be more concave, think like two halves of a circle joining, to receive a higher percentage of trust. Direct injection near the spark plug could guaranty the fire starts, but a weaker mix in the rest to keep it burning. Like the 2-chamber Honda CVCC head back from the late 1970s.
4). As for ring drag...an extra titanium piston lip could protect most pressure from reaching the rings, allowing for low-drag types to be used.
5). Put that in an Atkinson crank arraignment
https://enginehoist.net/engine-types-atkinson-cycle-vs-otto-vs-miller/ to get the benefits of a stroker but the crank throw of a high rev'ing race car with coffee can pistons. The end result would be a low rpm powerplant using it's entire burn cycle more efficiently. Hopefully. lol
(disclaimer: I'm not a programmer but watching Silicon Valley and thinking 'middle out' whatever that means)