The engine in question was the Wankel rotary, named after German engineer Felix Wankel, who first patented the concept in 1929. Instead of pistons moving back and forth, the rotary engine used a ...

Converting the ignition of a fuel-air mixture into usable mechanical energy lies at the core of a dizzying number of internal ...

When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...

While most people might know rotary engines for their use in cars, a pair of companies made use of them in chainsaws — and those chainsaws aren't easy to find.