Open AccessPreliminary theoretical results of limited slip couplings
Author(s) -
V Gâtu,
Andra Mihaela Predescu,
A I Stoicescu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/724/1/012011
Subject(s) - torque , throttle , clutch , slip (aerodynamics) , stall torque , mechanics , coupling (piping) , engineering , control theory (sociology) , mechanical engineering , automotive engineering , direct torque control , computer science , physics , electrical engineering , control (management) , voltage , artificial intelligence , induction motor , thermodynamics , aerospace engineering
Limited slip couplings are a solution for the traction of an all-wheel drive vehicle. The limited slip coupling can be mounted between the front and rear differentials for torque distribution, but also on a front or rear axle to distribute torque between two wheels Theoretical analysis is performed with a software plug-in with computed fluid dynamics. One of the most important features of a four wheel drive system is the control of the torque transmitted to the wheels. In order to get as much power as possible to the ground, the torque has to be divided among the four wheels to minimize the wheel spin. The limited slip coupling deals with this problem in a new, and, from many points a view, better way. The coupling can be compared to a hydraulic piston pump, which is driven by the slip between input and output shafts. The oil flow from the pump results in an oil pressure that is controlled by a throttle valve. The oil pressure compresses a wet multi-plate clutch that derivers torque to the output shaft. The torque on the output shaft is proportional to the oil pressure. Without the throttle valve the coupling would transfer the torque whenever there is differential rotational speed between the two shafts. One of the objectives of this paper is to present the importance of using CAD and CFD programs and to simulate the behavior of the coupling introducing a momentum, an energy and the material used for the disks, and to obtain results for heat flux and temperature.