Some of the best engineers and inventors are copycats. They look at how the natural world solves complex problems and use ...

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 ...

Flutter valves are handheld devices that help people with chronic obstructive pulmonary disease (COPD) clear excess mucus from their airways. They work by combining positive expiratory pressure with ...

The 3.3L V6 twin-turbo in the 2018 Kia Stinger won a 2018 Ward’s Auto 10 Best Engines award. The aluminum engine produces 365 horsepower and 376 lb-ft of torque. The engine has a wide range of useful ...