You can easily find old and new cars with engines that have three, five, 8, 10, 12, or 16 cylinders. Seven-cylinder engines are unheard of in cars, but why?

When people say rotary engine, they usually mean Wankel. Mazda put it in some of their coolest cars, and recently in the ...

News Published: 24 July 1937 Wear of Motor-Car Engine Cylinders Nature 140, 147 (1937) Cite this article ...