Modern ICEs are already insanely sophisticated, in pushing the boundaries with all kinds of tiny tricks, just to get a small percent extra. There is only that m

Modern ICEs are already insanely sophisticated, in pushing the boundaries with all kinds of tiny tricks, just to get a small percent extra. There is only that much you can get by changing the valve timing, freevalve, compression ratio, air boosters, electric turbos, fuel injection methods, mixture ratio, how the fuel get sprayed most efficiently into the chamber, predictive hill cruise control, balancing rods and whatnot. Everything has been tried and the improvements for each new trick is only marginal. Something more radical has to be done about the entire crankshaft and a 4 piston design. Believe me, lots of smart people have tried that as well, for many decades. Because the payoffs if you did find something are huge. There are lots of YouTube channels needing into all of this. Engineering Explained is a good one if you want to understand the level of how advanced modern engines really are.