Future downsizing of S.I. engines - potentials and limits of 2- and 3-cylinder concepts

Authors

Dipl. Ing. R. Weinowski, Dipl. Ing. A. Sehr, Dipl. Ing. S. Wedowski, Dr. Ing. S. Heuer, Dipl. Ing. T. Hamm, Dipl. Ing. C. Tiemann, FEV Motorentechnik GmbH

Year

2009

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 697

Summary

Downsizing, in combination with intake air pressure charging is, today, one of the most promising opportunities for reduction of CO2-emissions from internal combustion engines. In the small size vehicle class, with relatively low engine displacements, 3 cylinders, instead of conventional 4 cylinder engines are increasingly being introduced. With any further decrease of engine swept volume the question will arise, if a further reduction of the cylinder displacement or, the introduction of 2-cylinder engines makes sense. Furthermore the cost sensitivity in this kind of vehicle class has to be considered when discussing any technical effort.

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