Abstract
In this study, the structure and working principles of an eddy current retarder acting as an auxiliary brake set is introduced in detail. Based on the principle of energy conservation, a mathematical model was developed to design a retarder whose nominal brake torque is 1, 900 N·m. According to the characteristics of the eddy current retarder, an exclusive test bed was developed and used for brake performance measurements. The main technical parameters, such as the brake characteristics, temperature characteristics and power consumption, were measured with the test bed. The test data show that the brake torque of the eddy current retarder obviously decreased in the continuous braking stage and that there is a certain amount of brake torque in the normal driving state because of the remnant magnetism of the rotor plate. The mathematical model could be used to design an eddy current retarder. The exclusive test bed could be used for optimization of an eddy current retarder as well as for R&D of a series of products.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
Reference
Cadwell, L. H. (1996). Magnetic damping: Analysis on a eddy current brake using an airtrack. Am. J. Phys. 64,7, 917–923.
He, J. Q, He, R. and Yi, F. Y. (2003). Design method of eddy current retarder in automobile. Automotive Engineering, 10, 110–118. (in Chinese).
Heald, M. A. (1988). Magnetic brake: Improved theory. Am. J. Phys. 56,6, 521–522.
Lee, K. and Paek, K. (1999). Optimal robust control of a contactless brake system using an eddy current. Mechatronics, 9, 615–631.
Lian, B. X. and Ding, S. S. (2000). Electromagnetic retarder working principle and brief introduction of one application case. J. Hefie University of Technology, Nature Science Edn, 23(S1), 912–915. (in Chinese).
Liu, C. Y. and He, R. (2008). Numerical analysis and experiment of unsteady thermal field of rotor plate for eddy current retarder. Chinese J. Mechanical Engineering 21,4, 71–75.
Liu, C. Y., He, R. and Yi, F. Y. (2004). Effect and trend of eddy current retarder in heavy-duty automobile. Bus & Coach Tec, 3, 15–18. (in Chinese).
Schieber, D. (1974). Braking torque on rotating sheet in stationary magnetic field. Proc. IEE 121,2, 117–121.
Schreck, H., Kucher, H. and Reisch, B. (1992). ZF retarder in commercial vehicles. SAE Paper No. 922452.
Simeu, E. and Georges, D. (1996). Modeling and control of an eddy current brake. Control Eng. Practive 4,1, 19–26.
Wiederick, H. D., Gauthier, N., Campbell, D. A. and Rochon, P. (1987). Magnetic brake: Simple theory and experiment. Am. J. Phys. 55,6, 500–503.
Yi, F. Y., He, R., Liu, C. Y. and He, J. Q. (2004). 3-D finite element analysis of eddy current retarder. J. Traffic and Transportation Engineering 4,2, 30–35. (in Chinese).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, C.Y., Jiang, K.J. & Zhang, Y. Design and use of an eddy current retarder in an automobile. Int.J Automot. Technol. 12, 611–616 (2011). https://doi.org/10.1007/s12239-011-0071-3
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12239-011-0071-3