Meta Downsizing Concept – Reduction of CO₂-Emissions down to 75g/km

Authors

Dr.-Ing. P. Kreuter, Dipl.-Ing. U. Peter, Dipl.-Ing. M. Kier, Dipl.-Ing. S. Wegner, Dipl.-Ing. M. Müller, Dipl.-Ing. R. Bey, Meta Motoren- und Energie- Technik GmbH, Herzogenrath

Year

2009

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 697

Summary

In order to reach the goal of a reduction of the passenger car traffic produced CO2 emissions, all strategies available in a short term of view for the optimisation of current combustion engines have to be used. Especially the downsizing of engines shows significant fuel consumption potential by means of shifting the engine operation towards areas with higher efficiency due to a reduction of displacement, supercharging and downspeeding. Downsizing strategies for the base engines of smaller vehicles – that means for engines which already are equipped with a small displacement - have restrictions according to the current knowledge. Following the philosophy of a reduction the cylinder number finally the boundary conditions for an effective downsizing from the thermodynamical point of view can be improved for subcompact and compact class vehicles. Nevertheless, the combination of low cylinder numbers with high supercharging rates also effect high rotational irregularties at the crankshaft which deteriorate the comfort.

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