A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the differences between Wankel engines and other types of rotary engines. How a rotary engine works can be better understood when it’s called a ‘pistonless rotary engine.’ This eliminates the confusion with the similarly-named rotary engines that had pistons in a radial configuration. These were
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