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A Study on the Analysis of Design Parameters for Development of LSD  

Shin, Young-Ho (Department of Automobile Engineering, Kookje College)
Lee, Dong-Won (Korea Automotive Technology Institute)
Shin, Chun-Se (Korea Automotive Technology Institute)
Publication Information
Journal of the Korean Society of Safety / v.25, no.3, 2010 , pp. 15-21 More about this Journal
Abstract
A differential case equipped with LSD(limited slip differential) has several advantages over a normal type for rear wheel drive vehicles. Specially, the torque distribution can be done between left and right drive wheel in the state of limited slip differential. Also although LSD types are very various according to operating type, medium and torque distribution, a multi-clutch type is generally applied to rear wheel drive vehicles. So, this study presents the analysis of design parameters for development of a friction plate for multi-clutch type LSD using vehicle road test, the simulation of analytical model and the development of vehicle dynamics model by a benchmark product. According to this investigation, the design parameters which are pre-load of coil spring, friction plate and contact area quantity, friction coefficient and TBR(torque bias ratio) for a friction plate are derived from experiment and simulation and consequently, vehicle dynamics model has been constructed for the development of friction plate for multi-clutch type LSD.
Keywords
LSD(limited slip differential); TBR(torque bias ratio); friction plate; friction coefficient; dynamic analysis; clamping load; ECU(electronic control unit);
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