Free-piston engine generators and linear machines represent an innovative departure from conventional rotary systems, offering high thermal efficiency and operational flexibility by eliminating the ...

As we move toward battery and hydrogen cell breakthroughs that could wean us off our addiction to oil, here’s at least one engine design from yesteryear that ought to be examined a bit more. The ...

From General Motors Corp.’s research shops last week came a torpedo-shaped car with a revolutionary new engine. Called the XP-50O, the car is powered by a 250-h.p. “free-piston” engine that many ...

A novel but not new kind of engine is figuring more and more often in engineering literature and bull sessions. Last week the Cleveland Diesel Engine Division of General Motors Corp. gave details ...

When we here in the modern age think of an “engine,” we are usually thinking of a four-stroke, four-cylinder, gasoline-fed, internal-combustion engine with the valves on the top. But why must that be ...