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Two things: the exhaust flow is nearly constant because it is a 2 cylinder opposed 2 stroke, and the turbo could be sized appropriately? The RPM's are low, so there is some time. Also, each piston is pushing the other through exhaust, and there is no throttle, so pumping losses are low.
What is it about compression that is required for favorable combustion? Is it heat only, or is the pressure required? I was hoping to avoid the "work" of compression.
Your point about the offset causing low power on the upstroke is key -- the whole aim of this is gain the downstroke advantage, and not really need the upstroke power. Otherwise, it would seem that a crankshaft design for ICE is inherently and fatally flawed in that it cannot achieve any better efficiency than it already has?
(It was invented for steam power after all, which has a large back pressure reserve, so the piston is pushed nearly constantly through the whole stroke; instead of a burst at the very beginning.)
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