Design and Experimental Evaluation of Magnetorheologically Automotive Limited Slip Differential
[1]
Mohammed Abd Elhafiz, Automotive and Tractors Engineering Department, Faculty of Engineering, Helwan University, Cairo, Egypt.
[2]
Hassan Metered, Automotive and Tractors Engineering Department, Faculty of Engineering, Helwan University, Cairo, Egypt.
Limited-slip differential (LSD) is a kind of differential system which permits output shafts to rotate at different speeds but the maximum speed difference between shafts is limited. In automotive applications, limited-slip differentials are occasionally implemented in place of traditional differential systems. This paper introduces a detailed design of magnetorheologically automotive LSD to improve torque distribution which influences traction and maneuverability. The designed automotive LSD is submerged in magnetorheological fluid (MRF) which allows controlling the locking torque efficiently and then enhancing the vehicle traction characteristics. The yield stress of MRF depends on the magnetic field applied by the electromagnet by varying electric current. To assess the designed automotive LSD, an experimental test-rig contains some rotating clutches immersed in MRF associated with an electromagnet coil was manufactured. Experimental tests are achieved with and without magnetic field to change the MRF viscosity to measure the mechanical force on friction clutches. The controllable yield stress generates friction force on the rotating clutches surfaces to transmit torque. The complete theoretical calculations of the automotive LSD is done and applied in the manufacture process. The transmitted torque is assessed to judge the efficiency of the designed automotive LSD. The experimental results reflect that the designed automotive LSD can offer a highly acceptable level of automotive traction.
Magnetorheological Fluid, Locking Torque, Electromechanical, Limited Slip Differential
[1]
Jerry Kinsey, “The Advantages of an Electronically Controlled Limited Slip Differential”, Transmission & Driveline Symposium, 2004 SAE World Congress Detroit, Michigan March 8-11, 2004.
[2]
Damrongrit, Piyabongkarn, Jae Lew, John Grogg and Robert Kyle “Stability-Enhanced Traction and Yaw Control using Electronic Limited Slip Differential”, SAE World Congress Detroit, Michigan April 3-6, 2006.
[3]
M. Kciuk, R. Turczyn, “Properties and application of magnetorh eological fluids”, journal of Achievements in Materials and Manufacturing Engineering, VOLUME 18 ISSUE 1-2 September–October 2006.
[4]
Metered, H., Modelling and Control of Magnetorheological Dampers for Vehicle Suspension Systems, PhD Thesis, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester: Manchester, UK. 2010.
[5]
Deepak Baranwal, T. S. Deshmukh, "MR-Fluid Technology and Its Application- A Review", jetae, Volume 2, Issue 12, December 2012.
[6]
A. Spaggiari, Frattura ed Integrità Strutturale,” Properties and applications of Magnetorheological fluids”, Scilla 2012 - The Italian research on smart materials and MEMS, 23 (2013).
[7]
J Wang and G Meng, "Magnetorheological fluid devices: principles, characteristics and applications in mechanical Engineering", Proc Instn Mech Engrs Vol 215 Part L.
[8]
A. Lanzotti, F. Renno, M. Russo, R. Russo, M. Terzo, “A Physical Prototype of an Automotive Magnetorheological Differential”, WCE 2013, July 3 - 5, 2013, London, U.K.
[9]
A. Lanzotti, F. Renno, M. Russo, R. Russo, M. Terzo, “A physical prototype of an automotive magnetorheological differential”, Lecture Notes in Engineering and Computer Science, vol. 3 LNECS, pp. 2131– 2135, 2013.
[10]
A. Lanzotti, F. Renno, M. Russo, R. Russo, M. Terzo, “Design and development of an automotive magnetorheological semi-active differential”, Mechatronics, vol. 24, no. 5, pp. 426 – 435, 2014.
[11]
Rosiakowski Adam. Owczarek Piotr. Rybarczyk Dominik, “Research on rotary speed control by means of a clutch with magnetorheological fluid” Archives of Mechanical Technology and Materials, Vol 34, no. 1, 2014.
[12]
Barkan M. Kavlicoglu, Faramarz Gordaninejad, Cahit A. Evrensel, Yanming Liu, Nigar Kavlicoglu and Alan Fuchs, “Heating of a High-torque Magnetorheological Fluid Limited Slip Differential Clutch”, Intelligent Material Systems and Structures Journal of Intelligent Material, Vol 19, Issue 2, 2008 Systems and Structures.
[13]
Rosiakowski Adam, Sędziak Dariusz, “Research on clutch with magnetorheological fluid working as a mechanical fuse in a drive-load system” Archives of Mechanical Technology and Materials, Vol 32, no. 3, 2012.
[14]
M. M. Abd El-Hafiz, M. A. A. Emam, W. A. H. Oraby and S. Shaaban, “Axle torque distribution control for enhancing mobility of off-road vehicles”, Int. J. Heavy Vehicle Systems, Vol. 21, No. 3, 2014.
