Experimental Study on Torsional Vibration of Transmission System Under Engine Excitation

Abstract

Aiming to the problem of torsional vibration of the automobile transmission system caused by engine excitation, the experiment with dual mass flywheel small SUV cars as example, conducting torsional vibration test. The torsional vibration signal is tested by the equal angle sampling technique and the order analysis method. The torsional vibration data of the constant speed working condition obtained are dealt with and analyzed by MATLAB, and the order signal of the engine excitation is obtained. The influence of the engine excitation response on the torsional vibration of the transmission system and the torsional vibration reduction effect of the dual mass flywheel is verified, which serves as a basis and reference for torsional vibration analysis and the design and improvement of dual mass flywheel.