东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (1): 97-101.DOI: 10.12068/j.issn.1005-3026.2018.01.020

• 机械工程 • 上一篇    下一篇

醇类与柴油混合燃料的燃烧特性分析

周楠1, 吴晗2   

  1. (1. 东北大学 机械工程与自动化学院, 辽宁 沈阳110819; 2. 北京理工大学 机械与车辆学院, 北京100081)
  • 收稿日期:2016-06-28 修回日期:2016-06-28 出版日期:2018-01-15 发布日期:2018-01-31
  • 通讯作者: 周楠
  • 作者简介:周楠(1983-),男,辽宁朝阳人,东北大学讲师,博士.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N140303001).

Combustion Characteristics Analysis of the Alcohol and Diesel Blends

ZHOU Nan1, WU Han2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
  • Received:2016-06-28 Revised:2016-06-28 Online:2018-01-15 Published:2018-01-31
  • Contact: ZHOU Nan
  • About author:-
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摘要: 针对多种醇类与柴油混合物的燃烧特性进行了研究,选取的实验装置为顶部拥有可视观察窗的定容燃烧室.通过可燃混合气体预燃,模拟柴油发动机的高温高压环境,采用高速相机(幻影V7.1)记录醇类和柴油混合物的燃烧过程,进而分析其燃烧特性.实验结果表明,在较低的实验温度下,所选取的混合燃料能够达到无焰燃烧,产生的烟灰发光极低,可降低辐射热损失以及射流引起的壁面热损失.醇类混合燃料的高汽化潜热,有助于降低绝热火焰温度和氮氧化物的生成量.表征多醇柴油混合物是一种非常适合直接添加到柴油发动机中的替代燃料.

关键词: 醇类混合燃料, 柴油, 光学诊断, 低温燃烧, 燃烧特性

Abstract: The combustion characteristics of the alcohol (acetone - butanol - ethanol, ABE) and diesel fuel mixture was studied in the constant volume chamber with a window on the top. A premixed gas mixture containing C2H2, N2, and air was burned in the constant volume chamber to generate a high temperature and high pressure environment that simulated the typical diesel engine in-cylinder top dead centre (TDC) condition. The combustion process was recorded through the top window using a high speed camera (Phantom V7.1) located above the chamber. The results and discussions were based on the data above. It is found that at low ambient temperature and low ambient oxygen, the mixture presented extremely low soot luminosity with better combustion efficiency comparing to pure diesel. The high latent heat of vaporization of the alcohol blends contributes to the reduction of the adiabatic flame temperature and the amount of nitrogen oxides suggesting that ABE solution, an intermediate product during ABE fermentation, is a very promising alternative fuel to be directly used in diesel engines especially under low temperature combustion (LTC) conditions.

Key words: alcohol and diesel blends, diesel, optical diagnostics, low temperature combustion, combustion characteristics

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