汽油发动机部分负荷工况PCV阀敲击噪声优化
Small Internal Combustion Engine and Motorcycle(2022)
Abstract
通过对发动机曲轴箱通风系统的重要零部件PCV阀,主要是柱塞式PCV阀的工作原理及工作时产生的NVH敲击噪声大问题进行优化.重点从阀本体不同材质及结构角度,分析了阀芯材质、阀芯质量对阀芯敲击的影响.在保证阀性能和耐久性的基础上,最终从成本和NVH综合优化的角度提出了金属阀芯减小质量方案,解决了阀芯敲击阀体的NVH敲击噪声问题.
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Key words
Plunger type,PCV valve,Metal spool,Knocking noise
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