200 kW/L at Lambda = 1

Authors

Dr. J. Scharf, Dr. B. Franzke, Dr. P. Adomeit, Dr. M. Thewes, Dr. A. Balazs, Dr. T. Uhlmann, FEV Europe GmbH, Aachen;
Dr. H. Baumgarten, FEV Group Holding GmbH, Aachen;
Dipl.-Ing. C. Müller, RWTH Aachen University

Year

2019

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 811

Summary

The increasing tightening of global emission legislations promotes the further development of gasoline engines with the aim of clean engine operation under all real driving conditions. Auxiliary Emission Strategies (AES) are becoming less acceptable, and the introduction of conformity for the pollutant CO under RDE conditions (Real Driving Emissions) is under discussion. A lot of attention is given to mixture enrichment for component protection at high power output, and its elimination is one of the main topics in the current powertrain development. At the same time performance requirements are growing, gasoline engines compete increasingly with electrical components for package volume, and the displacement of high performance engines is reduced to lower the CO₂ emissions. This publication covers the trade-off between increasing specific power and switching to Lambda = 1 throughout the engine map. First, we will introduce suitable technology packages and expected specific performance values for volume segments. Then we will present the development of powerful drive systems in more detail. Based on the key question "Are 200
kW/L at Lambda = 1 possible?" we will describe how far combustion process, design, boosting, powertrain electrification, thermal management and emission control can be developed towards extreme specific performances.