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, Volume 80, Issue 10, pp 18–25 | Cite as

VTG Turbochargers with Ball Bearings for Gasoline Engines

  • Ralf Christmann
  • Amir Rohi
  • Sascha Weiske
  • Marc Gugau
Cover Story

By the year 2030, CO2 emissions in the EU are to be reduced by almost one third in comparison with 2019. Hybrid concepts also require maximum-efficiency combustion engines if they are to achieve the desired CO2 values. In particular gasoline engines using the Miller cycle are promising engine concepts. BorgWarner's turbochargers with variable turbine geometry are an optimum supercharging system for this cycle.

Starting Point

The more stringent CO2 targets, the rising proportion of heavy vehicles in the SUV segment and the further decline of diesel engines make alternative propulsion concepts based on combustion engines necessary in addition to electrification. The hybridization of the drivetrain is promising in terms of the CO2balance sheet. The electrification of the drivetrain allows the integration of new technologies such as the eBooster [1], and it also requires new design strategies for exhaust gas turbocharging. All concepts have one aim in common: to achieve highly efficient...

Notes

Thanks

The authors would like to thank Dr. Hermann Breitbach, Vice President Global Engineering and Innovation at BorgWarner Turbo Systems in Kirchheimbolanden, for his comprehensive support.

Copyright information

© Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature 2019

Authors and Affiliations

  • Ralf Christmann
    • 1
  • Amir Rohi
    • 1
  • Sascha Weiske
    • 1
  • Marc Gugau
    • 1
  1. 1.BorgWarner Turbo SystemsKirchheim­bolandenGermany

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