You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to ...

LiquidPiston says its new XTS-210 solves the efficiency, lubrication and fuel type issues of Wankel rotary engines. This supercharged, liquid-cooled two-stroke claims 5X the power of an equivalent ...

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 ...

When people say rotary engine, they usually mean Wankel. Mazda put it in some of their coolest cars, and recently in the MX-30 REV, though there it does the most humiliating job ever: it's a range ...

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

Ford once sketched a road where an engine's pistons never saw oil and engines ran hotter on purpose. In a late‑1980s patent application filed and granted in Europe, the company described an "uncooled ...

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 ...

You might overlook the end gaps of piston rings in your car. They shouldn't be taken so lightly, though, as they actually play a vital role in your engine.