Abstract
Modern turbo-charged internal combustion engines generate fluctuating torques with high amplitudes at the crankshaft. To reduce resultant crankshaft oscillations and their transmission to the drivetrain, flywheels and spring-damper systems like the dual-mass flywheel are commonly provided. Another concept is to couple a flywheel to the crankshaft using a non-uniformly transmitting mechanism in such a manner that the motion of the flywheel compensates the fluctuation torques. The degree of non-uniformity of the mechanism has to be adapted to the actual load and angular speed of the combustion engine. For this purpose a double-crank mechanism with cycloidal-crank input and adjustable crank length is proposed and analyzed. For a desired compensation torque the required transmission function of the mechanism is calculated using a simplified dynamic model. Parameter synthesis of the double-crank mechanism is achieved by means of a numerical optimization procedure based on a multibody model of the overall crankshaft-flywheel system.
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References
Bolzmann, J.: Torsional oscillation of engine crankshaft is reduced by disc carrying rotating asymmetric masses. Patent DE4115811A1, May 1991
Breunig, S., Hasenöhrl, O.: Driven shaft with moment of inertia varying with acceleration. Patent DE19649712C2, Nov 1996
Brüdgam, S., Schulze, K.: Device for balancing alternating moments. Patent DE3642487A1, July 1987
Hagemann, K., Krechberger, W., Eder, T., Woernle, C., Pfabe, M.: Motor vehicle drive strand device. Patent DE102010025188A1, Jan 2011
Kreuter, P., Essen, M.: Method and device for reducing rotational non-uniformities of the crankshaft of a piston internal combustion engine. Patent WO2008/145342, Dec 2008
Pfabe, M., Woernle, C.: Mechanismen zur kinematisch ungleichförmigen Führung von Schwungmassen. In: Berger, M. (ed.) Proceedings of 9th Kolloquium Getriebetechnik, Chemnitz 2011
Reik, W., Findlin, A., Seebacher, R.: Gute Schwingungen - Böse Schwingungen. 6. Fachtagung Schwingungen in Antrieben. VDI-Tagungsband 2077, Düsseldorf (2009)
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© 2013 Springer Science+Business Media Dordrecht
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Pfabe, M., Woernle, C. (2013). Reducing Rotational Crankshaft Oscillations by Means of a Kinematically Driven Flywheel. In: Viadero, F., Ceccarelli, M. (eds) New Trends in Mechanism and Machine Science. Mechanisms and Machine Science, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4902-3_28
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DOI: https://doi.org/10.1007/978-94-007-4902-3_28
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