While reading the supercharging technical tips that follow, note that most of what is presented applies to “mechanically-driven supercharged” rotary engines and “exhaust gas-driven turbocharged” rotary engines. In the most general sense, supercharging refers to all engines that have their intake charge artificially compressed. Engines that do not have this compressed intake charge feature are generally referred to as normally aspirated or non-turbo engines.
Supercharging a rotary engine is a topic that generates a substantial amount of discussion and confusion. We have done a great deal of engineering work with turbocharged and mechanically supercharged rotary engines for more than three decades and offer our experience in the paragraphs that follow.