摘要
针对某4缸增压中冷柴油机气缸盖在研制过程中发生的失效,从结构和工作条件的变化、形貌和解剖观察、化学成分、金相组织及应力诸方面进行失效分析,进而确定改进原则。通过有限元计算进行比较,确定最终改进方案。用应力测量验证改进效果,证明问题已得到完满解决,且可靠性提高。
In order to solve the failure of cylinder head on a 4-cylinder turbocharged and intercooled diesel engine in trial,failure analysis is taken on changes of design, work conditions, appearance, chemical composition, metallography, stress.On the basis of principle of improvement, through FEM calculation and comparison of different measures, final methodsare decided. Stress test proved that new design can settle down the failure problem, as well as enhancing reliability ofengine.
出处
《柴油机》
2004年第1期28-30,33,共4页
Diesel Engine
关键词
增压
柴油机
气缸盖
失效分析
技术改进
Diesel engine
Cylinder head
Failure analysis
Improvement
