Abstract
With the improvement of the speed and load of the automotive engine, and silent chain technology, as silent chain has a compact structure, high transmitting efficiency, high reliability and high wear resistance, its vibration and noise is low, and the silent chain have the advantage of lifelong maintenance-free, it significant overcomes the gear drive and belt drive performance, therefore, the silent chain is increasingly widely used in automotive engine timing system. Based on the analysis of the new silent chain with inner-outer compound meshing mechanism, and based on the combination of multi-body dynamics theory and modern contact dynamics theory, using the multi-body dynamics software RecurDyn, the paper establishes the timing silent chain system simulation model. Under the condition of variable speed and variable load at high speed, the multi-body dynamics model of engine timing silent chain system has been simulated. By analyzing the working path of the silent chain under the different speed and load operating conditions, the paper studied the dynamic response of the timing silent chain system and obtains the tensioning force curve of plate, pin, sprocket, damping plate, board and tensioner throughout the operating cycle of the timing silent chain system. After analysis and comparison of the calculated results, the multi-body dynamics model of the engine timing silent chain system is verified to be reasonable. The research result has important practical significance for reducing the development and production cycle of physical prototypes.
