Dimpled pistons might sound strange, but some say they could be the future for diesel power. We've looked at the arguments ...

In a conventional application, there are three rings per piston. The top ring is called the compression ring. Its purpose is to seal the combustion gas pressure, transfer heat from the piston to the ...

WILLIAMSPORT -- The only remaining American-owned manufacturer of piston airplane engines is expanding. Lycoming Engines in Williamsport Tuesday revealed a $12 million project that will result in 33 ...

We all know how a conventional internal combustion engine works, with a piston and a crankshaft. But that’s by no means the only way to make an engine, and one of the slightly more unusual ...

Most of us consider piston rings little more than a necessary evil. That's probably because grinding rings is a time-consuming chore. And who hasn't accidently ground a gap too large and wasted both ...

Give it wheels and a steering mechanism, and people will try to power it with anything they can. Visionary (and not-so-visionary) tinkerers and engineers have experimented with everything from steam ...