As a result, they are considered more efficient by some metrics and require fewer moving parts to function. The first rotary engines were primarily used for aircraft during World War I ...

Aftermarket performance parts like turbochargers will also negatively impact engine reliability. The Wankel rotary story isn’t completely bleak. There are some advantages to rotary engines.

unconventional powerplant—the rotary engine—began to circulate among engineers and enthusiasts alike. This innovative design promised a lighter, more compact engine with fewer moving parts ...

Although there was briefly a company called Rotary ... few moving parts and offers very smooth power transfer and high power to weight ratio. The downside, though, is that the engine deliberately ...

This development group has the hard task of trying to make the rotary stack up to modern internal combustion engines in terms of emissions and fuel-economy standards. Neither factor were ever ...