机械变速器齿轮敲击及抑制措施试验研究

Experimental Analysis of Manual Transmission Gear Rattle Dynamics and its Inhibition Measure

摘要:

利用专用台架试验和实车试验系统地研究了机械变速器齿轮敲击动力学特征、产生机理及抑制措施。首先，阐述了变速器齿轮敲击试验工况和传感器布置方案，明确试验测试和数据后处理中的注意事项；其次，通过专用台架试验测试了原车装备的离合器扭转减振器性能参数，利用实车试验分析原车在驻车怠速和爬行2种稳态工况下变速器齿轮敲击现象；最后，提出通过扭转减振器参数调校抑制齿轮敲击强度，并通过实车试验验证其有效性。研究成果可进一步用于指导离合器产品开发和解决工程实际中的变速器齿轮敲击难题。

Abstract:

Dynamic characteristics, generation mechanism and inhibition measure of manual transmission gear rattle were analyzed systematically by specialized bench test and vehicle experiment. Firstly, experimental condition and sensor layout of manual transmission gear rattle were designed and considerations for specific experimental operation and data postprocessing were clarified. Secondly, characteristics measurement of the original clutch damper was implemented on a special test bench, and vehicle experiments of manual transmission gear rattle were conducted on two steady conditions including idling and creeping condition. Finally, clutch damper parameters optimization was proposed to inhibit severe gear rattle phenomenon and then it was validated by vehicle experiments. The research achievements would contribute to improving clutch damper products and solving gear rattle problem in the engineering practice.