Influence Of Tire Stifness And Sprung Mass On Vehicle Ride Performance

Mohammad Nizar, Muhammad Safwan (2017) Influence Of Tire Stifness And Sprung Mass On Vehicle Ride Performance. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Vehicle ride performance should be monitored for every vehicle in order to maximize ride comfort and handling. In this research, the tires were assessed in terms of inflation pressure, rolling resistances and also road surfaces in order to determine the best condition in terms of ride performance. Values of inflation pressure were manipulated in order to obtain different rolling resistance to observe the differences in maximum tractive effort of the vehicle. The data were then compared and determined in which state of tire stiffness is best for ride performance. Other than the testing on tire stiffness, in order to determine the optimal vehicle ride comfort is best to assess the sprung mass’ reaction to different road inputs and manipulated variables. Simulations were done in order to observe multiple responses of the sprung mass when its value was increased. The vertical acceleration and displacement of the sprung mass was needed to be analyzed in order to determine is ride quality viable with higher sprung mass. Then, the suspension system is improved in order to compensate the higher value of sprung mass in order to see if it were to be modified, which part of the suspension should be improved. The suspension system used in this research is the passive suspension system as the data obtained was from a 2008 Proton Waja CPS Variant. Every simulation was done using the Matlab Simulink and the passive suspension system was designed according to quarter car suspension model.

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