VE分配泵降低发动机怠速噪声设计  

Design of Flexible Operating Device for VE Distribution Pump

作　　者：徐晓明 吴国伟 XU Xiaoming;WU Guowei(Nanjing Weifu Jinning Co.,Ltd.,Nanjing 210031,China)

机构地区：[1]南京威孚金宁有限公司,江苏南京210031

出　　处：《现代车用动力》2019年第4期28-30,53,共4页Modern Vehicle Power

摘　　要：对VE型分配泵高压系统结构进行了优化设计,在保证油泵高速、高负荷、高供油速率的同时,延长柴油机低速小负荷时的喷油持续时间。在满足更高排放要求的同时,使柴油机怠速时燃烧过程更柔和。根据发动机及整车怠速噪声测试,表明该设计方案比原方案能够降低怠速噪声约2 dB。The high pressure system structure of VE distributor pump is optimized to ensure the high speed,high load and high fuel supply rate of the pump,and to extend the fuel injection duration of the diesel engine at low speed and low load,while meeting higher emission requirements,the combustion process of diesel engine at idle speed is more flexible.According to the engine and vehicle idle noise test,it shows that the design scheme can reduce idle noise by about 2 dB compared with the original scheme.

关 键 词：分配泵 分配柱塞 分流孔 高压回油孔 低速噪声 

分 类 号：U467.493[机械工程—车辆工程]