Once left behind due to high fuel consumption and fragile reliability, the rotary engine, long championed by Mazda, is making ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

Would you believe me if I told you that Mazda is not only reviving its rotary engine development team but also accelerating R&D for modern-day Wankels? The automaker said as much in a press release on ...

The Astron Aerospace H2 Starfire is a clean burning hydrogen and water powered internal combustion engine alternative to battery cell technology. There is very little parasitic power loss with the H2 ...

The 2004 Mazda RX-8 arrived as a high-stakes bet that sports car buyers would still embrace a rotary engine in an era ...

Michael Arsenaeu designed the Avadi engine 20 years ago in the hopes of creating an entirely new engine design to be efficient as well as reduce emissions. In 2015, Avadi began the build and ...

LiquidPiston's XTS-210 rotary engine is about the size of a basketball but could replace generator engines several times larger. A Connecticut-based company is on contract with the Army and Air Force ...

The NSU Ro 80 arrived in 1967 as a family sedan that bet everything on a radical rotary engine and a shape that looked like ...

For a time, the Wankel rotary engine seemed like the future. In 1963, German automaker NSU—later absorbed into Audi—debuted the Wankel Spider, the first internal-combustion production car not powered ...

The rotary engine is unique in its success and failure and its ability to make an impact with a completely different way of thinking. As it is, every production car for the last 130 years, aside from ...

Modern engines face high failure rates, prompting massive recalls from major automakers. Downsizing, turbochargers, and thin oils increase engine stress and vulnerability to defects. Automakers need ...