二甲醚发动机燃料喷射过程的试验与仿真  

Experiment and simulation of fuel injection process for dimethyl ether engine

作　　者：张光德[1] 吴旭峰[1] 王卫华[1] 杨启梁[1] 

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《武汉科技大学学报》2008年第1期15-17,共3页Journal of Wuhan University of Science and Technology

基　　金：湖北省自然科学基金资助项目(2005ABA017);武汉科技大学重点科研基金资助项目(2004XZ11)

摘　　要：对二甲醚(DME)燃料喷射过程中泵端、嘴端油管压力和喷油器针阀升程进行了测试,考察了燃用DME时泵端和嘴端油管压力建立的起始点、最大压力点以及喷油器针阀升程曲线的特点。在试验的基础上建立了二甲醚燃料喷射规律的数学模型,计算结果和实验数据相吻合。The line pressure at pump and nozzle and the needle lift of the injectors for dimethyl ether （DME） injection process are tested. The characteristics of the initial point and the maximum point of the line pressure at pump and nozzle as well as the injectors lift curve are investigated under different engine loads. On the basis of the experiment, a mathematical model is established for the simulation of the injection process. It is found that the simulated results agree well with the testing results.

关 键 词：二甲醚 发动机 喷射过程 仿真 

分 类 号：TK421.42[动力工程及工程热物理—动力机械及工程]