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    The innovative high-performance plug-in hybrid drivetrain in the new Porsche 918 Spyder

    Kerner,J. / Spiegel,L. / Hauck,C. et al. | Automotive engineering

    Variable valve actuation - key technology for high specific power output and low exhaust emissions

    Richter,H. / Schwarzenthal,D. / Spiegel,L. et al. | Automotive engineering | 2003

    Approach of a method for functional evaluation of hybrid drivetrains

    Birkhold,J.M. / Kerner,J. / Spiegel,L. et al. | Automotive engineering | 2014

    Investigation into the application of an optical fiber sensor for knock detection and knock control system

    Spicher,U. / Spiegel,L. / Reggelin,B. et al. | Automotive engineering | 1992