IMPROVEMENT OF OFF-ROAD VEHICLES PERFORMANCE USING CONTROLLABLE TORQUE DISTRIBUTION DEVICE | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 3, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Page 1-12 PDF (1.82 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2012.35957 | ||||
View on SCiNiTO | ||||
Authors | ||||
M. M. Abd El-hafiz1; S. Shaaban2; W. A. Oraby3; M. A. Emam4; A. M. Sharaf5 | ||||
1Ass. Lecture, Automotive Eng. Dept., Faculty of Eng. - Mataria, Helwan Univ., Cairo, Egypt. | ||||
2Professor, Automotive Eng. Dept., Faculty of Eng. - Mataria, Helwan Univ., Cairo, Egypt. | ||||
3Ass. Professor, Automotive Eng. Dept., Faculty of Eng. - Mataria, Helwan Univ., Cairo, Egypt. | ||||
4Lecturer, Automotive Eng. Dept., Faculty of Eng. - Mataria, Helwan Univ., Cairo, Egypt. | ||||
5Egyptian Armed Forces. | ||||
Abstract | ||||
ABSTRACT A peculiarity of off-road vehicles is that their mobility depends not only on the total power provided by the engine, but also on its distribution among the driven axles/wheels. In turn, this distribution is largely dominated by the drivetrain architecture and the inherent characteristics of the torque distribution devices. Among the wide variations of torque distribution devices, controlled differential can offer variable bias ratios over the entire operation of the vehicle. This paper presents an electronically controlled device to modulate the applied force over multi-plate clutches which are placed between the driven axle and stationary hub. For the driving condition over split adhesion roads, the proposed device brakes the spinning wheel over low adhesion side and therefore bias more torque to the other wheel with good adhesion side. This would improve off-road mobility and save the power losses on low traction wheels. A special test rig has been devised to experimentally investigate the characteristics of the proposed device. The rig compromises measurements of speed and torque applied to each wheel. The obtained results show that various benefits could be gained when a controllable multi plate clutch is implemented with simple differential driving axle. The system can offer power saving than both passive differential and even limited slip differential. | ||||
Keywords | ||||
AWD Torque distribution devices; Controllable differentials | ||||
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