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汽车安全与节能学报

JASE ›› 2016, Vol. 07 ›› Issue (01): 94-99.DOI: 10.3969/j.issn.1674-8484.2016.01.012

• 汽车节能与环保 • 上一篇    下一篇

聚甲氧基二甲醚火(PODEn) 引燃时刻对HCII 燃烧与排放的影响

刘浩业，王 志，王建昕   

  1. 清华大学 汽车安全与节能国家重点实验室，北京 100084，中国
  • 收稿日期:2015-10-29 出版日期:2016-03-25 发布日期:2016-04-05
  • 作者简介:第一作者 / First author ： 刘浩业(1989—)，男( 汉)，山东，博士研究生。E-mail: liuhaoyebeijing@126.com 第二作者 / Second author ： 王志(1972—)，男( 汉)，湖北，副研究员。E-mail: wangzhi@tsinghua.edu.cn
  • 基金资助:

    国家“九七三”重点基础研究发展计划资助项目(2013CB228404)

Effects of induced injection-timing on combustion and emission performances in homogeneous-charge-induced-ignition (HCII) combustion by using polyoxymethylene dimethyl ethers (PODEn)

LIU Haoye, WANG Zhi, WANG Jianxin   

  1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
  • Received:2015-10-29 Online:2016-03-25 Published:2016-04-05

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摘要：

为提高均质混合气引燃(HCII) 的效率并降低由于引燃柴油预混不充分产生的碳烟排放，在
一台HCII 原理性单缸机上，分别使用体积分数为 0%、50% 和100%的聚甲氧基二甲醚(PODEn)/
柴油混合燃料作为引燃燃料研究了在不同引燃燃料喷油时刻下HCII 燃烧的燃烧、排放特性和热效率。
结果表明：在1 200 r/min, 0.3 MPa 指示平均有效压力(IMEP) 工况下，向引燃燃料中添加PODEn
能够明显降低碳氢化合物(HC)、一氧化碳 (CO) 排放以及循环变动(COV)，提高指示热效率，100%
的PODEn 作为引燃燃料时HCII 燃烧模式的指示热效率达到甚至超过柴油直喷模式；在1 600 r/min，
0.6 MPa IMEP 工况下，向引燃燃料中添加PODEn 能够明显降低排气光吸收系数，提高指示热效率。

关键词: 柴油机, 燃烧, 排放, 均质混合气引燃(HCII) , 聚甲氧基二甲醚(PODEn), 引燃时刻

Abstract:

Combustion, emission characteristics and thermal efficiency were investigated under various
induced injection-timing for a Homogeneous Charge Induced Ignition (HCII) to improve the thermal efficiency
and reduce soot emissions from under-mixing induced diesel. The tests were conducted in an HCII principle
engine using 0%, 50% and 100% volume friction polyoxymethylene dimethyl ethers (PODEn) /diesel blend as
induced fuel. The results show that adding PODEn can significantly reduce the hydrocarbons (HC), nitric oxide
(CO) emissions, and the Coefficient of Variation (COV) and can increase indicated thermal efficiency at the
condition of 1 200 r/min, 0.3 MPa of Indicated Mean Effective Pressure (IMEP), the HCII induced by 100%
PODEn even has higher thermal efficiency than diesel Direct-Injection mode; and that adding PODEn can significantly
reduce exhaust smoke and increase indicated thermal efficiency at the condition of 1 600 r/min, 0.6 MPa of IMEP.

Key words: diesel engines, combustion, emissions, homogeneous charge induced ignition (HCII), polyoxymethylene dimethyl ethers (PODEn), induced injection-timing