冯立岩

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:Deputy Director of National Research Center of Shipbuilding

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:能源与动力学院

学科:动力机械及工程. 轮机工程

办公地点:大连理工大学西部校区能动楼606

联系方式:0411-84709803

电子邮箱:fengli@dlut.edu.cn

扫描关注

论文成果

当前位置: 冯立岩 >> 科学研究 >> 论文成果

Visualization Investigation of the Influence of Chamber Profile and Injection Parameters on Fuel Spray Spreading in a Double-Layer Diverging Combustion Chamber for a DI Diesel Engine

点击次数:

论文类型:期刊论文

发表时间:2018-09-01

发表刊物:ENERGIES

收录刊物:SCIE

卷号:11

期号:9

ISSN号:1996-1073

关键字:diesel engine; double-layer diverging combustion chamber; fuel spray; visualization test

摘要:The double-layer diverging combustion chamber (DLDC chamber) aims to improve the fuel-air mixing formation and promote in-cylinder air utilization by changing fuel spray spreading characteristics. In order to investigate how the DLDC chamber profile and injection parameters affect the fuel spray spreading, visualization of fuel injection and impingement tests were carried out on two different DLDC chambers with different fuel injection parameters. The visualization test results showed that double-layer fuel spray spreading was obtained in the two DLDC chambers and the peripheral top clearance of each chamber was utilized efficiently. The DLDC chamber with a 50% upper layer volume provided a larger fuel spray distribution region after the start of injection. The DLDC chamber with a 70% upper layer volume obtained a larger fuel spray distribution region with better top clearance utilization at the later stage of injection. The injection parameters mentioned in this research showed significant effects on the fuel spray spreading in the DLDC chamber. Increasing the injection pressure provided a larger fuel spray distribution area at the beginning of injection. Decreasing the nozzle hole diameter had a positive influence on obtaining a larger fuel spray distribution. Advancing the injection timing enabled the enlarging of the fuel distribution region.