Hope springs eternal.
What most folks fail to understand is that modern engines arose from decades of infinite attention to detail: thousands of tiny, tiny improvements in materials (got to the the graphite crystal size and orientation right for the piston rings), manufacturing processes (alloy control, fabrication techniques, finishing) and testing with feedback (millions of customers racking up billions of hours of operation, and field results then used to guide further improvements) coupled with relentless competition.
Any new engine has to take advantage of this information, AND overcome those issues specific to a particular engine design. That requirement is a huge mountain to be hiked and it takes megabucks and many years.
But still hope springs eternal.
Fred
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There are so many new ideas for engines to replace the good ole piston engine, but almost none of them ever make it into production. The ancient piston rules. Here is another one of those new engine ideas which seem to have several significant advantages over piston engines (No one usually lists the disadvantages). This one can be compression ignition, 2 to 4 times the power to weight, multifuel including JP8, more efficient, far less vibration, less complex, and can be self supercharged. You are going to like this one.
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