This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Research on Thermal Management of Magnetorheological Fluid Retarder Based on Phase Change Principle
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
Annotation ability available
In order to avoid the braking recession on heavy commercial vehicles caused by the long-distance continuous braking of the main brake, the hydraulic retarder is widely used as an important brake auxiliary device in various heavy commercial vehicles to improve the vehicle safety. However, the hydraulic retarder not only has the advantages of large braking torque and good stability, but also has the disadvantages of poor retarding ability at low rotating speed, braking lag and difficulty in accurately controlling the braking torque. This paper introduces a new type of hydraulic retarder. The new retarder replaces the oil in the retarder with magnetorheological fluid and applies a magnetic field in the retarder arrangement space, so that slows down the vehicle by using the rheological properties of the magnetorheological fluid under the magnetic field. The magnetorheological fluid hydraulic retarder (MRFHR) generates a large amount of heat during working which not only decreases the braking performance, but also causes the structure to be damaged, and even risks the safety of the driver and the vehicle. This paper studies on the thermal characteristics of the magnetorheological fluid hydraulic retarder. Base on the thermal characteristics, a heat dissipation system is designed by the phase change principle to improves the working stability of MRFHR and the uniform of temperature distribution. By the one-dimensional beam theory of hydraulic retarder and the working mode of magnetorheological fluid, the thermal model of magnetorheological fluid retarder is established under different the magnetic field. The shear force model under axial and circumferential magnetic fields is established when the retarder works. The heat generation power of the magnetorheological fluid retarder is simulated for axial and circumferential magnetic fields. The result shows that the heat generations power of the retarder increases with the increase of the axial magnetic field, decreases when the circumferential magnetic field rises. An experimental study on the temperature distribution characteristics of the outer wall surface of the retarder shows that the wall temperature distribution is affected by the radius and gravity, and the temperature difference also increases with the increase of rotational speed. Combined with the thermal characteristics of MRFHR, a cooling system based on phase change principle was designed and the thermal management system was verified. The results show that the cooling system reduces the working temperature of the retarder wall and improves the uniform of temperature distribution.
CitationQuan, J. and Huang, B., "Research on Thermal Management of Magnetorheological Fluid Retarder Based on Phase Change Principle," SAE Technical Paper 2020-01-0948, 2020.
- Jiarui, C. , Automobile Structure. Vol. 2 (Beijing: Mechanical Industry Press, 2011).
- Mu, H., Yan, Q., and Wei, W. , “Study on Influence of Inlet and Outlet Flow Rates on Oil Pressures and Braking Torque in a Hydrodynamic Retarder,” International Journal of Numerical Methods for Heat & Fluid Flow.
- Song, B., Lv, J., Liu, Y. et al. , “The Simulation and Analysis on Engine and Hydraulic Retarder Continual Braking Performance of the Tracked Vehicle on Long Downhill,” in International Conference on Electronic Measurement & Instruments; Zheng, C., “Analysis of Rescue Lane Design Method on Mountain Way,” Traffic Science and Technology (04):56-58, 2009.
- Wang, K., Tang, J., and Li, G. , “Research on Parametric Design of Hydraulic Retarder Based on Multi-Field Coupling of Heat, Fluid and Solid,” The Open Mechanical Engineering Journal 9(1):58-64, 2015.
- Lin, C. and Li, C. , “The Heat Transfer Analysis of Hydraulic Retarder,” in International Conference on Remote Sensing, Environment and Transportation Engineering, 2011.
- Li, X., Cheng, X., Miao, L. et al. , “Numerical Analysis on Internal Flow Field of a Hydraulic Retarder.”
- Yan, J., Xuexun, G., and Wu, B. , “Modeling and Simulation on Hydraulic Retarder Oil Charging & Discharging Control System,” SAE Technical Paper 2010-01-0269, 2010, https://doi.org/10.4271/2010-01-0269.
- Wang, C., Tan, G., Yang, B., Chen, M. et al. , “The Performance Study of Air-Friction Reduction System for Hydraulic Retarder,” SAE Technical Paper 2014-01-2283, 2014, https://doi.org/10.4271/2014-01-2283.
- Stanway, R., Sproston, J.L., and Stevens, N.G. , “Non-Linear Modelling of an Electro-Rheological Vibration Damper,” Journal of Electrostatics 20(2):167-184, 1987.
- Melzner, K., Fleischer, J., and Odenbach, S. , “New Developments in the Investigation of Magnetoviscous and Viscoelastic Effects in Magnetic Fluids,” Magnetohydrodynamics 37:285-290, 2001.
- Chen, S., Huang, J., Jian, K. et al. , “Analysis of Influence of Temperature on Magnetorheological Fluid and Transmission Performance,” Advances in Materials Science and Engineering 2015:1-7, 2015.
- Mazlan, S.A., Ekreem, N.B., and Olabi, A.G. , “An Investigation of the Behaviour of Magnetorheological Fluids in Compression Mode,” Journal of Materials Processing Technology 201(1):780-785, 2008.
- López-López, M., Kuzhir, P., Bossis, G. et al. , “Preparation of Well-Dispersed Magnetorheological Fluids and Effect of Dispersion on Their Magnetorheological Properties,” Rheologica Acta 47(7):787-796, 2008.
- Xuhui, L. , “Research on Self-Amplifying Magnetorheological Fluid Brake for Vehicles,” 2014.
- Xiaojie, Q., Yongdong, A., and Lu, D. , “Thermal Performance and Design of Parallel Magnetorheological Retarder for Heavy-Duty Transport Vehicle,” Engineering and Experiment 03:82-85, 2017.
- Zhaozhen, Z. , “Magnetorheological Fluids Engine Crankshaft Torsional Based Study,” 2017.
- Mei, B., Guo, X., Yang, B., Xiong, S. et al. , “Study on the Effects of Magnetic Field on Magnetorheological Fluid Hydraulic Retarder Braking Torque,” SAE Technical Paper 2017-01-2503, 2017, https://doi.org/10.4271/2017-01-2503.
- Xiong, S., Tan, G., Yang, B., Xiao, L. et al. , “Effect of Temperature on Braking Efficiency Stability of Magnetorheological Fluid Auxiliary Braking Devices,” SAE Technical Paper 2017-01-2510, 2017, https://doi.org/10.4271/2017-01-2510.
- Wenxing, M. , “Foreign Vehicle Hydraulic Transmission Research Status and Prospects,” Automotive Engineering (04):3-8, 1996.
- Wenxing, M. , Theory and Design of Hydraulic Transmission (Chemical Industry Press, 2004).