Wankel (Rotary) Engines By: Hoa Chu. Introduction ► A type of Internal Combustion Engine that uses a rotary design. ► Uses Four strokes cycle (Otto cycle).

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Presentation transcript:

Wankel (Rotary) Engines By: Hoa Chu

Introduction ► A type of Internal Combustion Engine that uses a rotary design. ► Uses Four strokes cycle (Otto cycle). ► Developed in 1951 by Felix Wankel.

Rotary Design ► 4 stroke engine (intake, compression, combustion, exhaust) ► Rotor on eccentric shaft. ► Design to Minimize Volume while Maximizing Compression ratio. ► Reuleaux Rotor – Triangular shaped with equaled width.

Pro ► Much simpler comparing to its piston counterpart. ► Power to weight ratio is superior than piston engines. ► Smooth power flow and high RPM. ► No Seizure at high temperature.

Con ► Sealing, leaks from the apex seals greatly reduces efficiency of the engine. ► High Operating Temperature, the housing operates at steady state with constant heating in each chamber. ► Low fuel efficiency and shorter engine life due to damaged seals.

Applications

Rotor Vs Piston 13B 1.3 Liters ( rpm and 138 ft·lbf ) KA24DE 2.4 Liters ( rpm and 160 ft·lbf) Mazda Rx-7 ( ) Nissan 240sx ( )

Questions? ▲ ▲ ▲ Wankel Engines Hoa Chu