Arkus-Duntov acquiesced, instructing his engine expert, Gib Hufstader, to get on it. Hufstader paired two separate dual-rotor engines around a central shaft. The XP-895 debuted at the Paris Auto ...

Instead of pistons moving up and down in bores, the rotary engine used triangular-shaped rotors on an eccentric geared shaft mounted in an oval-shaped (called epitrochoid) case.

The rotary engine enjoys a cult following thanks to Mazda and its range of sports cars past. Today marks 50 years since the Mazda Cosmo Sport 110S launched in Tokyo, and started a rotary love ...

These Japanese manufacturer is not only in the forefront of vehicle designing innovation, and now it created a new hybrid ...

The Mazda rotary engine is the ultimate underdog, belting out big league power numbers from a scant 80 inches of displacement. At 350 cubic inches, a small-block Chevy is more than four times ...

This article was originally published with the title “Inclined Shaft Rotary Engines” in SA Supplements Vol. 21 No. 528supp (February 1886), p. 8423 doi:10.1038/scientificamerican02131886-8423supp ...

The rotary engine has been a Mazda staple since 1967. It powered one of the most famous and eccentric Japanese sports car line-ups, the RX-series, until 2012 when Mazda discontinued pure rotary ...

While rotary engines made excellent power for their size (the 1.3-liter in the RX-8 made 232 hp, or 178 hp per liter), they were prone to apex seal failure, necessitating an engine rebuild more ...

Well, this is quite the surprise of 2022. It looks like Mazda might be trying yet another revival of its rotary engine, following the rotary's return as a range-extender for the MX-30 EV SUV.

The XTS-210 is described by its maker as a rotary engine with just two moving parts, the rotor and the shaft. It works like a two-stroke engine, delivering six combustion events per revolution of ...