Evolutions of the Boxer-Engine by BMW Motorrad

Authors

Dipl.-Ing. W. Nehse, Dipl.-Ing. S. Rudert, Dr.-Ing. J. Reissing, BMW Motorrad, Munich

Year

2004

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 566

Summary

The following article is about the new BMW R 1200 GS boxer engine’s construction and design. This comprises the base engine’s and the gear box’s description, the presentation of engine’s induction-, exhaust- and the auxiliary system(s). Various optimisation steps during the developing process as well as layout criteria and aims of different components and of the overall engine are demonstrated. Diverse numeric simulation tools were successfully applied to reach the declared intentions. The article shows some results of the dynamic fluid simulation, the structure optimisation and the charge-cycle analysis. These experimental engine’s analyses provide particularised results of friction behaviour, internal combustion and charge-cycle effects. Beyond that, results according to further engine specific parameters and the exhaust emission behaviour are presented. Finally, the applied motor management and its diagnostic concept is introduced.

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