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兵工学报 ›› 2014, Vol. 35 ›› Issue (3): 403-408.doi: 10.3969/j.issn.1000-1093.2014.03.017

• 研究简报 • 上一篇    下一篇

柴油/甲醇不同掺烧方式燃烧过程和排放对比分析

李仁春1, 王忠1, 袁银男1,2, 张登攀1, 李铭迪1   

  1. (1.江苏大学 汽车与交通工程学院, 江苏 镇江 212013; 2.南通大学 机械工程学院, 江苏 南通 226019)
  • 收稿日期:2013-04-23 修回日期:2013-04-23 上线日期:2014-04-28
  • 通讯作者: 李仁春 E-mail:lrcujs@163.com
  • 作者简介:李仁春(1989—),男,硕士研究生
  • 基金资助:
    国家自然科学基金项目(50776042);江苏省高校自然科学基金重点项目(10KJA470009、08KJA470001);江苏省2012年度普通高校研究生科研创新计划项目(CXZZ12_0676);2011年江苏省高校优势学科建设工程项目(苏政发办[2011]6号)

Comparative Analysis of Combustion and Emissions of DI Engine Operating on Diesel/Methanol by Different Methods

LI Ren-chun1, WANG Zhong1, YUAN Yin-nan1,2, ZHANG Deng-pan1, LI Ming-di1   

  1. (1.School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;2.School of Mechanical Engineering, Nantong University, Nantong 226019, Jiangsu, China)
  • Received:2013-04-23 Revised:2013-04-23 Online:2014-04-28
  • Contact: LI Ren-chun1 E-mail:lrcujs@163.com

摘要: 在不改变4B26增压柴油机结构的前提下,对柴油机气道喷射甲醇与柴油/甲醇直接混合燃料进行了燃烧过程、排放性能试验,对两种柴油/甲醇掺烧方式的燃烧过程与排放进行了分析。试验结果表明:与柴油/甲醇直接混合相比,柴油机气道喷射掺烧10%甲醇,气缸压力相差不大,缸内平均温度较低,低负荷时滞燃期较长;气道喷射甲醇大幅度降低排气温度,NOx和碳烟排放降低效果较为显著,HC和CO排放较高。与燃烧柴油相比,两种方式掺烧10%甲醇时,发动机的动力性变化不大,缸内平均温度都有所降低,滞燃期有所延长;NOx和碳烟排放降低,HC和CO排放有所增加。

关键词: 动力机械工程, 甲醇, 燃烧过程, 排放

Abstract: The combustion process and emissions of diesel with 10% of diesel/methanol blend or 10% of port-injected methanol are studied. 4B26 turbo-charge DI engine without any change in its original structure is test at a constant speed of 2 200 r/min under the conditions of four different engine loads, which is equipped with an electrically-controlled port injection system. The result shows that the in-cylinder pressure of DI engine has no great difference in the use of diesel/methanol blend and port-injected methanol. Compared with diesel/methanol blend, the port-injected methanol gives a lower intake air temperature, contributing to a further lower exhaust temperature. The ignition delay period becomes longer at low load, and NOx and soot emissions are reduced significantly, meanwhile, HC and CO emissions are high. In both cases, compared with diesel, the maximum pressure hardly changes, the in-cylinder temperature decreases, and the ignition delay postpones at low load; NOx and soot emissions are reduced, and HC and CO emissions are increased.

Key words: power machinery engineering, methanol, combustion process, emission

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