基于燃烧分析与角度域分析的发动机敲击异响排查  

Investigation on Engine Knock Squeak Based on Combustion Analysis and Angle Domain Analysis

作　　者：谢振武 周伟美 庞士明 Xie Zhenwu;Zhou Weimei;Pang Shiming

机构地区：[1]上汽通用五菱汽车股份有限公司,广西柳州545000

出　　处：《时代汽车》2024年第16期184-186,共3页Auto Time

摘　　要：文章基于西门子 LMS测试设备和软件,通过对某自主品牌四缸发动机“哒哒声”敲击异响的时域/频域信号分析确定异响响应频段,以此响应频段为参考基础进一步通过发动机倒拖测试以及发动机燃烧分析、角度域分析确认异响与发动机点火角相关,并进行针对性的验证,调整点火角消除该异响。Based on Siemens LMS test equipment and software,this paper determines the frequency band of squeak response through the analysis of the time/frequency domain signal of the"click"squeak and squeak of a self-owned four-cylinder engine,and further confirms that the squeak is related to the ignition angle of the engine through the engine backward drag test,engine combustion analysis and angle domain analysis based on this response frequency band,and carries out targeted verification to adjust the ignition angle to eliminate the squeak.

关 键 词：异响 响应频段 角度域分析 燃烧分析 点火角 

分 类 号：TN9[电子电信—信息与通信工程]