Brake Involvement Aiti-Slipped Differential System And Lock-Up Differential Automobile's Performance Contrast Research

Limited Slip Differential(LSD) is a new technique for improving the performance of vehicle. It gets more and more extensive application in the international car field.This paper makes research on the performance contrast of Braking force involvement Limited Slip Differential system and Mechanical friction disk type of Limited Slip Differential. Main contents are listed as follows:The paper analyzes the factors that influence the characteristic of transferring torque and gets the calculation model for computing the shear torque.On the other hand, with a view to analyze the wholly dynamics of the auto when driving, this paper establishes a the automobile model with the four wheels. This model includes 13 degrees of freedom. Making using of the established model, we can list the dynamics equation; After predigesting, it can gain the final dynamics equation, which can analyze the controllability and stability and the drivability.Making using of the established model, we can analyze the effect of LSD of power performance in split-road(acceleating time, max degree of slope)and controllability and stability(steady static circular Pylon course slalom test)when the automobile swerved to the automobile. At the same time, this paper also establishes a computer simulation model based on the mathematic model explained upward. After contrasting the result of the emluator of the LSD automobile to the common automobile, it is proved that the established model and the result of emluator are right. At the same time, the drivability, controllability and stability of the automobile that fixed braking force involvement Limited Slip Differential system are improved obviously.The research developed in this paper will promote the study of Limited Slip Differential (LSD) in our country more penetrately, and improve the accuracy of the theoretic analyzation and calculation in LSD. At same time, the research developed in this paper will make people well known more about LSD, and impel them to study the research of this new technique. This research will improve the matching degree between the LSD and vehicle's controllability and stability in the design of LSD. Therefore, this research will accelerate the coming forth of the suitable domestic LSD product. In addition, the attempt of this paper on analyzing the vehicle's dynamics by virtue of the computer simulation will promote the application of this technique in vehicle field.