摘要
某新型高强化发动机在设计开发过程中出现曲轴箱压力异常升高、窜气量大的问题。经故障再现和分析,确认故障原因为气缸局部异常磨损。通过成分检测、性能测试、热机耦合CAE对比分析,确定根本原因为气缸在高的热负荷、恶劣的润滑条件下承受复杂作用力而出现“抛光”现象。基于根本原因提出了优化设计方案,耐久试验结果表明,优化后的气缸状态良好,再未出现气缸“抛光”的问题。
Abnormal increase of crankcase pressure and large gas channeling occurred during a new diesel engine development.After fault reappearance and analysis,it is confirmed that the failure was caused by abnormal wear of the cylinder.Through composition testing,performance testing and thermo-mechanical coupling CAE comparative analysis,it was confirmed that the high thermal load and poor lubrication conditions led to the cylinder wear.The optimization design was put forward based on the failure analysis.Durability test results show that the optimized cylinder is in good condition and there is no problem of cylinder polishing.
作者
温拾平
陈婷
王静楠
郑朝升
罗剑坤
WEN Shiping;CHEN Ting;WANG Jingnan;ZHENG Chaosheng;LUO Jiankun(Tongji University,Shanghai,201804,China;-Jiangling Motors Co.,Ltd.;Jiangxi Institute of Economic Administrators)
出处
《小型内燃机与车辆技术》
CAS
2024年第1期31-35,共5页
Small Internal Combustion Engine and Vehicle Technique
作者简介
温拾平(1989-),男,硕士研究生,工程师,主要研究方向为发动机设计。
