Modeling and simulation of a powertrain-vehicle system with automatic transmission
by Sheng-Jiaw Hwang, Jer-Shi Chen, Li Liu, Ching-Chung Ling
International Journal of Vehicle Design (IJVD), Vol. 23, No. 1/2, 2000

Abstract: A complete powertrain-vehicle model has been developed to describe the torsional response of a powertrain system and the longitudinal response of a vehicle system. The model is used to analyse system equilibrium, free vibration, and forced vibrations. The equations of motion are linearised about the equilibrium to determine natural frequencies of the torsional modes. The forced responses of the model are investigated for an unlocked torque converter. For a rear-wheel drive vehicle, the free vibration analysis shows the effect of axle stiffness on the natural frequencies of the powertrain. The forced vibrations of powertrain components under a wide-open-throttle condition are examined. Experimental measurements from a test vehicle are in good agreement with the theoretical predictions.

Online publication date: Mon, 18-Aug-2003

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