发动机齿轮系统动态特性影响因素分析

宫继儒¹，陈国强¹，刘宽¹，曲文静²

1.潍柴动力股份有限公司大缸径发动机研究院，山东 潍坊  261061；

2.潍柴动力股份有限公司发动机研究院，山东 潍坊  261061

摘要：为提高某大缸径柴油机齿轮传动系统的可靠性，采用EXCITE Timing Drive软件建立齿轮传动系统和配气机构动力学模型，在考虑发动机转速、负载波动等因素影响的情况下，分析齿侧间隙、发动机附件负载和齿宽对齿轮强度、连接可靠性、润滑特性等齿轮系统动态特性的影响。结果表明：齿侧间隙主要影响动态齿间力，负载对整条传动链的主要动态特性影响显著，齿宽主要影响齿轮系统的强度。该分析可以为发动机齿轮系统优化提供参考。

关键词：齿轮系统；动态特性；齿侧间隙；负载；齿宽

Analysis of influencing factors of dynamic characteristics of gear transmission system for engine

GONG Jiru¹, CHEN Guoqiang¹, LIU Kuan¹, QU Wenjing²

1.High-Tech Development Zone, Weichai Power Co.,Ltd.,Weifang 261061, China;

2.R&D Center,Weichai Power Co.,Ltd.,Weifang 261061, China

Abstract：In order to improve the reliability of the gear transmission system for a large bore diesel engine, the dynamics model of the gear transmission system and valve mechanism are established by the EXCITE Timing Drive software. Considering the influence of engine speed, load fluctuation and other factors, the effects of gear backlash, engine accessory load and tooth width on gear strength, connection reliability and lubrication characteristics on gear system dynamic characteristics are analyzed. The results show that the gear backlash factor is mainly reflected in dynamic intertooth force. The variation of load has a significant influence on the main dynamic characteristics of the whole transmission chain. The influence of tooth width on gear system is mainly in strength. The analysis can provide reference for the optimization of gear system.

Keywords:gear system; dynamic characteristic; gear backlash; load;tooth width