| 刘威，裴毅强，秦静，任源，袁列杰，王志东.汽油在超临界环境下的喷雾特性[J].内燃机工程,2019,40(3):10-15. |
| Spray Characteristics of Gasoline in Super Critical Environment |
| DOI：10.13949/j.cnki.nrjgc.2019.03.002 |
| Key Words:super-critical environment constant volume combustion bomb spray characteristic gasoline temperature |
| Author Name | Affiliation | | LIU Wei, PEI Yiqiang, QIN Jing, REN Yuan, YUAN Liejie, WANG Zhidong | 1.State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
2.Internal Combustion Engine Research Institute, Tianjin University, Tianjin 300072, China |
|
| 摘要点击次数: 4091 |
| 全文下载次数: 1938 |
| Abstract:Using a super-critical platform and a constant volume combustion bomb system, gasoline with different critical states, including low subcritical, subcritical and supercritical state gasoline was injected respectively into a supercritical environment, and then the spray characteristics of the gasoline obtained from the schlieren imaging system were compared with those in the normal temperature and pressure environment. Results show that in the supercritical environment and at the same injection timing, as the injection temperature rises, the spray penetration of the single-hole injector increases first and then decreases steadily, but it is always increasing for supercritical state gasoline. The spray area continues to expand, but for the subcritical state gasoline, it fluctuates and falls after reaching its peak. And as the injection temperature rises, the spray penetration of the five-hole injector first rises steadily, and then drops rapidly below the initial value. The spray area increases first and then decreases slowly for subcritical state gasoline or falls after reaching its peak for supercritical state gasoline. In addition, under the same spraying conditions, the development of spray pattern in the supercritical environment is significantly different from that in the normal temperature and pressure environment. Due to the interaction of the spray and environment in the supercritical environment, the collapsing phenomenon and the micro-explosion of the bubble will dominate the development of the spray. The variation of the spray penetration and spray area with time will be much smaller in the normal temperature and pressure environment. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|