1. The five stroke internal combustion engine Inventor & Patent owner: Dipl. Ing. Gerhard Schmitz

2. The dilemma of the classical gasoline engine: 1. High efficiency requires high expansion ratio 2. High power density requires low compression ratio BUT UNFORTUNATELY Expansion ratio = Compression ratio

3. To cut the Gordian knot, we would prefer an engine, wherein... 1. High efficiency still requires high expansion ratio 2. High power density still requires low compression ratio AND FORTUNATELY Expansion ratio ≠ Compression ratio

4. How can we change a “ BUT UNFORTUNATELY = “ into an “ AND FORTUNATELY ≠ ” ?

5. Let’s change things... Why not add an additional degree of freedom? Three times... “There is no reason to not try it!” Why not allow different cylinders to concentrate on different tasks? Why not add an additional engine stroke? Why not add an additional engine stroke?

6. In 2000, a new engine is born...

7. The software design...... of the stage 1 prototype from Ilmor

8. The hardware manufacturing...... of the stage 1 prototype from Ilmor

9. The software design...... of the stage 2 prototype from OEM

10. What about performances? Ilmor stage 1 prototype on the Dyno: Engine size: 1478 ccm Power: 130 hp @ 7000 rpm Peak Torque: 166 Nm @ 5000 rpm Fuel consumption: 226 g/kWh OEM stage 2 prototype on the Computer: Engine size: 2000 ccm Power: 244 hp @ 6500 rpm Peak Torque: 265 Nm @ 6000 rpm Fuel consumption: 204 g/kWh

11. Fuel consumptions of... Measured 226 g/kWh on the very first five stroke prototype, and Calculated 204 g/kWh.......must be compared to 240 g/kWh achieved by the currently best gasoline engine of the Toyota Prius...... after decades of development years!

12. And what about accuracy of calculated engine performances?

13. Theoretical analysis by Gerhard Schmitz Theoretical analysis by Hans Alten Fire up of Ilmor prototype Ilmor website Mario Illien on TV United States Patent 6553977 More informations...

14. I do fully agree with Mario Illien, when he characterises the five stroke engine being a … “gasoline engine with fuel consumption and emission levels comparable to that of current diesel engines, without the serious problem of particulate and NOx emissions that plague diesels”. … and simply being an… “ingenious energy efficient engine”.

15. Thank you for your attention... Gerhard Schmitz, St.Vith 2009