The CO₂ Challenge: Aggressive Downsizing for HSDI Diesel – Engine Concept Definition

Authors

Dr. H. Sorger, M. Howlett, Ing. W. Schnider, Dipl.-Ing. N. Ausserhoffer, Dr. P. Bartsch, Dipl.-Ing. M. Weißbäck, AVL List GmbH, Graz; O. Soustelle, Le Moteur Moderne, Palaiseau; P. Ragot, P. Mallet, Renault S.A.S., Rueil Malmaison

Year

2010

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 716

Summary

Against a background of consumer demand for low fuel consumption vehicles, as well as legislative pressure to reduce CO2 emissions, the automotive industry is currently developing solutions to significantly improve the efficiency of ICE-based powertrains. One answer to this challenge is the engine downsizing approach. A clear trend can be observed on the market already today: engines of 2.0L swept volume are replaced by engines with a size of about 1.6L. This paper describes the concept for an even more extreme downsizing approach for the next generation of powertrains by further reducing the engine size to 1.0L using a 3 cylinder concept with a specific power rating of 80 kW/L. AVL and Renault worked closely together to define a suitable diesel hybrid powertrain concept for EU6 emission limits. The consequences for the base engine design of such an aggressive downsizing approach were established by means of a design study supported by simulation...

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