Man. That is amazing. I've always wondered about your pic and now I know.
I have often wondered if a modern, electronicized version of a hit and miss engine would be efficient. Technically, it would be running at peak BSFC every time it fired, whether it was 200 stroking (idle), 50 stroking or 4 stroking (full power). I guess the freewheeling would create a lot of pumping losses with air rushing in and out of the cylinder. Maybe not so good.
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