柴油机
柴油機
시유궤
DIESEL ENGINE
2011年
6期
25-28
,共4页
大功率柴油机%高压共轨%喷油嘴%结构参数
大功率柴油機%高壓共軌%噴油嘴%結構參數
대공솔시유궤%고압공궤%분유취%결구삼수
large power diesel engine%high pressure common rail system%fuel injector%geometric parameters
用AVL-FIRE软件建立了TBD234V6高压共轨大功率柴油机喷油器喷嘴内部流动的仿真计算模型；研究了共轨大功率柴油机喷油器主要结构参数，包括喷孔直径、喷孔个数、喷孔长径比、喷射夹角等，对燃油在喷嘴内部流动的影响。分析表明：喷嘴结构参数不同会使各喷孔内气穴产生的时刻、分布区域以及强度不一致，最终影响各喷孔的流量特性，并且传递到喷孔出口面，对喷雾特性产生影响。
用AVL-FIRE軟件建立瞭TBD234V6高壓共軌大功率柴油機噴油器噴嘴內部流動的倣真計算模型；研究瞭共軌大功率柴油機噴油器主要結構參數，包括噴孔直徑、噴孔箇數、噴孔長徑比、噴射夾角等，對燃油在噴嘴內部流動的影響。分析錶明：噴嘴結構參數不同會使各噴孔內氣穴產生的時刻、分佈區域以及彊度不一緻，最終影響各噴孔的流量特性，併且傳遞到噴孔齣口麵，對噴霧特性產生影響。
용AVL-FIRE연건건립료TBD234V6고압공궤대공솔시유궤분유기분취내부류동적방진계산모형；연구료공궤대공솔시유궤분유기주요결구삼수，포괄분공직경、분공개수、분공장경비、분사협각등，대연유재분취내부류동적영향。분석표명：분취결구삼수불동회사각분공내기혈산생적시각、분포구역이급강도불일치，최종영향각분공적류량특성，병차전체도분공출구면，대분무특성산생영향。
The simulative calculation model of the oil flow in the nozzle hole of diesel engine with high- pressure common rail injector was built up by AVL-FIRE. The influence of main geometric parameters of high-pressure common rail injector （including diameter, number, length/diameter, spray angle etc. ） on flow rate of fuel oil in the injector hole is studied. The analysis shows that the differences of injector＇ s ge- ometric parameters may result in inconsistent of air sink occurring time in injector holes, distributing are- as and strength, and ultimately influence the flow characteristics of the injector holes, which could be transferred to the outlet of injector holes and affect the spray characteristics.
