Influence of single and dual mass flywheel usage in IC engines on clutch dynamics

Abstract

The dual mass flywheel especially used in diesel engines has a structure in which the single- mass flywheel is divided into two parts and these two parts are combined with a curved helical spring. The flywheel is a part that reduces the speed fluctuations in the crankshaft of the internal combustion engines. In addition to this function, the dual mass flywheel dampens the torsional vibrations better than the clutch disc springs thanks to the spring system found in its structure. There are no torsional springs in the disc of the clutch system where dual mass flywheel is used. The dual mass flywheel is used with a rigid clutch disc without torsion springs. From this point of view, it is thought that the clutch dynamics of both systems are different. For this purpose, mathematical models of both systems were formed. The obtained models were solved after the appropriate transformations. As a result, it was seen the clutch engagement times are almost same in both systems. However in the clutch system where the dual mass flywheel is used the clutching process is performed more smoothly.

Keywords

• Dual mass flywheel,clutch dynamics,torsional vibration

References

1. [1] Gaillard, C. L. and Singh, R. (2000) ‘Dynamic Analysis of Automotive Clutch Dampers’, Applied Acoustics, 60, 399-424.
2. [2] Sawanobori T. and Suehiro K. (1995), ‘An analysis of clutch judder’, Proceedings of SAE 1995 Noise and Vibration Conference and Exhibition, USA, pp. 692-696.
3. [3] Centea, D., Rahnejat, H. and Menday, M. T. (2001) ‘Non-Linear Multi-Body Dynamic Analysis for The Study of Clutch Torsional Vibrations (Judder)’, Applied Mathematical Modelling , 25, 177-192.
4. [4] Crowther, A., Zhang, N., Liu, D. K. and Jeyakumaran, J.K. (2004) ‘Analysis and Simulation of Clutch Engagement Judder and Stick–Slip in Automotive Powertrain Systems’, Journal of Automobile Engineering, 218, 12, 1427-1446.
5. [5] Jadhav, S. (2014), ‘Powertrain NVH Analysis Including Clutch and Gear Dynamics’, Proceedings of SAE 2014 World Congress and Exhibition, Detroit, Michigan, USA
6. [6] Karadere, G., Kopmaz, O. and Güllü, E. (2010) ‘Transient Phenomena during Engagement Phase of a Clutch’, International Journal of Materials and Product Technology, 39, 3-4, 225-239.
7. [7] He, L., Xia, C., Chen, S., Guo, J. and Liu, Y. (2019) ‘Parametric Investigation of Dual-Mass Flywheel Based on Driveline Start-Up Torsional Vibration Control’. Shock and Vibration, Vol. 2019, 1-12.