内燃机工程2025，Vol.46Issue(4)：41-48,8.DOI:10.13949/j.cnki.nrjgc.2025.04.005
甲醇-柴油双燃料高压直喷射流火焰相互作用的光学可视化研究
Optical Diagnosis of the Flame Interaction Under Methanol-Diesel Dual-Fuel Direct-Injection Conditions
张天浩 1吴浩卿 2吕兴才2
作者信息
- 1. 上海交通大学 中英国际低碳学院,上海 200240
- 2. 上海交通大学 机械与动力工程学院,上海 200240
- 折叠
摘要
Abstract
In order to study the effects of diesel injection pressures and methanol substitution rates on the flame shapes,reaction zone properties and distribution of reaction intermediates in the development of methanol-diesel dual direct injection flame,the visualization of methanol-diesel dual direct injection flame was studied by using OH* chemiluminescence and flame self-luminescence high-speed synchronous imaging techniques on constant volume combustion chamber(CVCC).The results show that when the injection pressure is low,the atomization is poor,and some oil droplets are fully burned after colliding with methanol.When the injection pressure is high,the injection pulse width is shorter and the combusting effect is weaker.The selection of methanol substitution rate needs to balance combustion performance and exhaust emissions,which also has an important impact on the shape of the dual direct jet flame and the distribution of diesel fuel in the flame.When the methanol substitution rate increases from 60%to 90%,the peak heat release rate decreases by 33.2%.关键词
甲醇-柴油双燃料直喷/OH*化学发光/定容燃烧弹/射流火焰/油束碰撞Key words
methanol-diesel dual-fuel direct injection/OH* chemiluminescence/constant volume combustion bomb/jet flame/oil beam collision分类
能源科技引用本文复制引用
张天浩,吴浩卿,吕兴才..甲醇-柴油双燃料高压直喷射流火焰相互作用的光学可视化研究[J].内燃机工程,2025,46(4):41-48,8.
