Radial Engines. This design may decrease the cost of design and manufacture. The Difference Between Piston And Rotary Air Compressors Rotary (Wankel) engine is intermittent usually using Otto cycle, a few have been made to use the Diesel cycle. In most cases, it varies between 300F to 400F. . Nikolay Shkolnik and son Alexander turn the Wankel engine inside out. Obvious, it is more efficient than a gasoline/diesel engine.For example the RX8 on 1.3 L in 2 rotors get 250 hp which is quite impressive for that capacity,also it works in 4 stroke,and the power to weight ratio is good.The only disadvantage would be the pollution that occurs, due to emmisions. To do this with just two valves they have to open wide. V-Type Engines. The X-Engine's ability to eliminate bulk and weight is extraordinary; to give you an idea, the team pulled a 40-lb (18-kg), 6.5-hp engine out of the go-kart in the video above, and replaced it . Why are Inline Engines more commonly used than Radial Engines? They are the . 5. 6. Rotary vs Piston. • The engines are much smaller, lighter, and (in theory!) Covington Aircraft is only a phone call away fro your aircraft engine repair needs. Cosmos, a Citroen, couple others. PROS • The nature of the engine means that a much smaller displacement can produce considerably more power than a comparably sized piston engine - a Mazda RX-8 is technically a 1.3litre, yet produces around 230bhp. All in all, the piston-style engines work better than the rotary engine in the vehicles we drive today due to weight and driver demands. Rotary vs Piston. Wankel/rotary engine efficiency - Physics Forums A propane tank was connected to the engine through an EFI propane injector, and the engine ignition timing was retarded in the ECU. 7 Different Types of Helicopter Engines - Aero Corner The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion.