IAV´s I2+2 Engine with Activable Displacement – Test Bench Results and Vehicle Potentials

Authors

Dr.-Ing. J. Roß, Dipl.-Ing.(FH) T. Semper,
Dipl.-Ing. S. Doller, Dipl.-Ing. S. Franke,
Dr.-Ing. H. Neukirchner, IAV GmbH, Berlin

Year

2014

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 777

Summary

There are SI engines on the market featuring cylinder deactivation (CDA) and using deactivated valves, injection and ignition to improve fuel economy at lighter load. IAV’s Advanced Development division has developed additional ways of reducing the fuel consumption of CDA engines with the help of simulation methods. At the 2012 Vienna Engine Symposium, IAV presented theoretic and test-based investigations including proposals to further reduce the fuel consumption of CDA engines. A significant reduction in friction can be achieved by additionally deactivating part of the crank train in CDA mode. In conjunction with the higher engine loads offered by CDA, fuel consumption is drastically reduced.

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