内燃机凸轮滚轮转速测量系统及滑差特性研究  

Research on the Speed Measurement System and Skidding Characteristics of Cam–Roller of Internal Combustion Engines

作　　者：黄积松 郭峰 栗心明 李书义 HUANG Jisong;GUO Feng;LI Xinming;LI Shuyi(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,青岛266520

出　　处：《内燃机工程》2023年第2期58-63,共6页Chinese Internal Combustion Engine Engineering

基　　金：内燃机可靠性国家重点实验室开放课题项目(skler-202003);国家自然科学基金项目(52005278)。

摘　　要：搭建了基于某型号内燃机凸轮–滚轮机构的滚轮转速测量系统,初步研究了滚轮打滑特性。该系统采用巨磁阻(giant magneto resistance,GMR)传感器测量滚轮转速,得到实际运动下凸轮与滚轮间的平均滑差值。试验结果表明:真实工况下凸轮与滚轮间确实存在打滑,而且打滑受到工况条件的影响。试验发现,随凸轮转速增大,滚轮打滑总体增加,增大凸轮-滚轮接触副压力可以抑制凸轮与滚轮间打滑,低黏度润滑油也能够削弱打滑。A roller speed measurement system based on a certain type of internal combustion engine cam-roller mechanism was built,and the characteristics of roller skidding was preliminarily studied.A giant magneto resistance(GMR)sensor was used to measure the rotational speed of the roller,and the average skidding value between the cam and the roller under actual motion was obtained.The experimental results show that there is indeed skidding between the cam and the roller under real working conditions,and the skidding is affected by the working conditions.With the increase of the cam speed,the roller skidding increases overall.The skidding between the cam and the roller can be inhibited by increasing the cam–roller contact pressure,and low-viscosity lubricating oil can also reduce the skidding.

关 键 词：内燃机 凸轮–滚轮 打滑特性 巨磁阻传感器 

分 类 号：TH117.2[机械工程—机械设计及理论]