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Investigation and Improvement of a Bouncing Torsional Vibration in Automotive Dual Mass Flywheel by Combining Testing and 1D CAE Modeling Approach
Technical Paper
2019-01-1556
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Dual mass flywheel (DMF) is a well-known isolation system for vehicle drivetrain. DMF has two typical elastic energy storage systems: long travel arc springs and in-series spring units (including two or more springs) and sliding shoes connected in series. DMF has such complex nonlinear characteristics as torque-dependent torsional stiffness and rotational speed-dependent hysteresis friction due to its dependency of centrifugal force that is applied to components and radial force of springs. Because of this complexity, sub-harmonic vibration (SHV) may occur under certain circumstances, such as under light-load and high-rotational conditions. In general, since SHV’s frequency is 1/2 or 1/3 of the engine’s combustion frequency and may cause human discomfort, DMF must be designed robust against such nonlinear vibration. In this paper to reduce the SHV occurrence and to show a more robust design indicator, the SHV causing the mechanism is researched by testing and 1D CAE modeling. In detail, DMF interior behavior in high-speed rotation is clarified with high-speed cinematography on a test bench, and high-resolution relative torsional angle of DMF is obtained by evaluating the actual vehicle with a conventional four-cylinder gasoline engine, which is equipped with in-series spring unit type DMF. As a result, bouncing torsional vibration (BTV) might occur when sliding shoe and secondary-side driven flange contact each other, and that is triggering the SHV excitation. 1D CAE model, whose development is based on the tested mechanism, is verified since the substantially same BTV and SHV occur between tests and simulation results. According to 1D CAE, highly sensitive parameters and ideas for reducing SHV can be found with sensitivity analysis of the physical DMF parameters. The effect of those parameters was confirmed with vehicle tests.
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Yamakaji, Y., Yoshimoto, D., Tsujiuchi, N., and Ito, A., "Investigation and Improvement of a Bouncing Torsional Vibration in Automotive Dual Mass Flywheel by Combining Testing and 1D CAE Modeling Approach," SAE Technical Paper 2019-01-1556, 2019, https://doi.org/10.4271/2019-01-1556.Data Sets - Support Documents
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References
- Qatu , M. , Abdelhamid , M. , Pang , J. , and Sheng , G. Overview of Automotive Noise and Vibration Int. J. of Vehicle Noise and Vibration 5 1/2 1 35 2009 10.1504/IJVNV.2009.029187
- Qatu , M. Recent Research on Vehicle Noise and Vibration Int. J. of Vehicle Noise and Vibration 8 4 289 301 2012 10.1504/IJVNV.2012.051536
- Stoffels , H. and Schroeer , M. NVH Aspects of a Downsized Turbocharged Gasoline Powertrain with Direct Injection SAE Technical Paper 2003-01-1664 2003 10.4271/2003-01-1664
- Reik , W. , Seebacher , R. , and Kooy , A. Dual Mass Flywheel 6th LuK Symposium 1998 69 93
- ZF Friedrichshafen AG 11 12 2018
- Walter , A. , Brummund , S. , Merz , B. , Kiencke , U. et al. Estimation of the Instantaneous Engine Torque for Vehicle with Dual Mass Flywheel (DMF) Proceedings of the IFAC 40 10 167 174 2007 10.3182/20070820-3-US-2918.00024
- Schaper , U. , Sawodny , O. , Mahl , T. , and Blessing , U. Modeling and Torque Estimation of an Automotive Dual Mass Flywheel American Control Conference ACC’09 IEEE 2009 1207 1212 10.1109/ACC.2009.5160136
- Walter , A. , Kiencke , U. , Jones , S. , and Winkler , T. Anti-Jerk & Idle Speed Control with Integrated Sub-Harmonic Vibration Compensation for Vehicles with Dual Mass Flywheels SAE Int. J. Fuels Lubr. 1 1 1267 1276 2009 10.4271/2008-01-1737
- Mehdizadeh Gavgani , A. , Bingham , T. , Sorniotti , A. , Doherty , J. et al. A Parallel Hybrid Electric Drivetrain Layout with Torque-Fill Capability SAE Int. J. Passeng. Cars - Mech. Syst. 8 2 767 778 2015 10.4271/2015-01-9108
- Rajaei Salmasi , F. Control Strategies for Hybrid Electric Vehicles: Evolution, Classification, Comparison, and Future Trends IEEE Transactions on Vehicular Technology 56 5 2393 2404 2007 10.1109/TVT.2007.899933
- Yamakaji , Y. Dynamics Modeling of the Arc Spring for Powertrain NVH Prediction Proceedings of the First Japanese Modelica Conferences 124 9 14 2016 10.3384/ecp161249
- Chun Bo , L. and Pavelescu , D. The Friction-Speed Relation and Its influence on the Critical Velocity of Stick-Slip Motion Wear 82 3 277 289 1982 10.1016/0043-1648(82)90223-X