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Wankel (Rotary) Engines

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.

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Wankel (Rotary) Engines

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  1. Wankel (Rotary) Engines By: Hoa Chu

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

  3. 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.

  4. 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.

  5. 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.

  6. Applications

  7. Rotor Vs Piston Nissan 240sx (1991-1994) Mazda Rx-7 (1989-1992) 13B 1.3 Liters (146 hp @ 6500 rpm and 138 ft·lbf ) KA24DE 2.4 Liters (155 hp @ 5600 rpm and 160 ft·lbf)

  8. Questions? ▲ ▲ ▲ Wankel Engines Hoa Chu

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