柴油机配气机构的设计改进  

Design improvement of diesel engine valve train

作　　者：于洋 沈天杨 YU Yang;SHEN Tianyang(Shanghai New Power Automotive Technology Co.,Ltd.,Shanghai 200438,China)

机构地区：[1]上海新动力汽车科技股份有限公司,上海200438

出　　处：《柴油机设计与制造》2024年第2期19-22,共4页Design and Manufacture of Diesel Engine

摘　　要：针对柴油机气门间隙调整、保养困难及成本较高的问题,以某4缸柴油机非道路国四排放升级项目为例,对该柴油机的配气机构进行模拟计算和设计改进,将机械摇臂更改为液压摇臂,并采用性能测试和耐久试验进行验证。结果表明:设计改进后,该柴油机的气门间隙可以免保养维护,不但满足客户要求,而且降低了生产和保养成本,提高了整机的可靠性和稳定性。Aiming at the problems of difficult adjustment and maintenance of diesel engine valve clearance and high cost,taking a four-cylinder diesel engine non-road China IV emission upgrade project as an example,simulation and design improvement of the diesel engine's gas distribution mechanism were carried out.The mechanical rocker arm was changed to a hydraulic rocker arm,and the performance test and durability test were used to verify.The results show that after the design improvement,the valve lash of this diesel engine can be maintenance-free,which not only meets the requirements of customers,but also reduces the production and maintenance costs and improves the reliability and stability of the whole engine.

关 键 词：柴油机 配气机构 气门间隙 液压摇臂 设计改进 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]