Piston rings have small gaps that allow them to expand during engine operation. If these gaps line up, fuel and gases can escape into the crankcase, causing loss of power and increased oil consumption ...

A 2000 patent for an unconventional engine hinted at a groundbreaking design. But why has it never been brought to life?

We’d had car engines with every cylinder combination from two to twelve, and a few more besides, but not seven - here's why ...

Remarkable innovations have been made to automotive technology since Karl Benz introduced the world to the "Motorwagen" in 1866 and Henry Ford gave rise to the American auto industry with the Model T ...