High -pressure oil duct intersection's buffer structure

The utility model provides a high -pressure oil duct intersection's buffer structure, relates to diesel engine high pressure common rail fuel pump field, including plunger chamber, high -pressure oil duct, the intersection department that high -pressure oil duct connects the plunger chamber is provided with the arc structure, the cavity of arc structure for having certain molded lines, the molded lines comprises oval arc and multistage function, the arc structure with all there is transition region between plunger chamber and the high -pressure oil duct, the flow area of arc structure is crescent according to the liquid flow direction. The utility model discloses play the cushioning effect that the fuel flows, reduce high pressure fuel's mobile speed, can get rid of the stress concentration of handing -over department, can play and prevent that this wall cave of locating from losing. 种高压油道交汇口的缓冲结构，涉及柴油机高压共轨燃油泵领域，包括柱塞腔、高压油道，所述高压油道连接柱塞腔的交汇口处设置有弧形结构；所述弧形结构为具有定型线的空腔，所述型线由椭圆弧和多段函数组成，所述弧形结构与所述柱塞腔和高压油道之间均有过渡区域；所述弧形结