船用柴油机气门导管与缸盖压装过程的研究与优化

柴油机缸盖是组成船用柴油机的核心部件之一,气门导管是柴油机气门的导向装置,其准确完成装配才能确保气门能够准确无误地做直线往复运动,气门导管与缸盖之间一般采用过盈联接,因此保证气门导管与缸盖的装配质量是十分重要的.主要分析了在不同过盈量的条件下,气门导管与缸盖装配过程中的压装力及由其引起的应力与位移变化情况,并以被包容件...

Research and optimization of the press-fitting process of valve guide and cylinder head of marine diesel engine

Diesel engine cylinder head is one of the core components of marine diesel engine.The valve guide is the guiding device of the diesel engine valve.Accurate assembly can ensure that the valve can make straight reciprocating motion accurately.The valve guide and cylinder head generally adopt interference connection.Therefore,it is very important to ensure the assembly quality of the valve guide and the cylinder head.This paper mainly analyzed the press-fitting force and the stress and displacement changes caused by the valve guide and cylinder head assembly process under different interference conditions,and used the inner diameter of the valve guide of the contained part as the optimization parameter to optimize.Under the conditions of meeting actual working requirements,designed the optimal valve guide inner diameter size,and got the best fit size of the two interference fits,so as to provide the valve guide with the smallest pressing force,stress and the best interference pressing into the cylinder head,which provides a theoretical reference and guides actual production.