Experience the journey of creating a homemade rotary valve engine, from disassembly and lathe machining of critical parts to ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

It is quite ironic that internal combustion engines (ICEs) have remained basically the same for more than one hundred years. It is only now – when they are allegedly on the verge of disappearing – ...

That alone reduces emissions and increases engine longevity. The rotary valve also means that the blockages caused by conventional poppet valves are not an issue as poppet valves are not needed in ...

Far more than just adapting the rotary engine for use as a range extender, Mazda has essentially added variable cam timing to a camless engine. A lot of research was done over the years in attempts to ...

Rotary engines are compact, smooth, and powerful, so why don't more automakers use them? Well, it's complicated.

Over-the-top rotary builds are an enthusiast tradition. Because so few rotary cars have been made, the limits of the engine type haven't been fully exploited by automakers. It's been tuners who have ...

Li Qiao, a professor in Purdue University’s College of Engineering, is testing a Tesla valve-inspired design to improve the performance of rotating detonation engines. Purdue University photo. WEST ...