Shock wave reflection induced detonation (SWRID) under high pressure and temperature condition in closed cylinder

被引：29
作者：
Wang, Z. [1 ]
Qi, Y. [1 ]
Liu, H. [1 ]
Zhang, P. [2 ]
He, X. [3 ]
Wang, J. [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Ctr Combust Energy, Beijing 100084, Peoples R China
[3] Aramco Serv Co, Aramco Res Ctr, Detroit, MI 48377 USA
来源：
SHOCK WAVES | 2016年 / 26卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Super-knock; RCM; Detonation; Shock wave; REACTION FRONT PROPAGATION; PRE-IGNITION; SUPER-KNOCK; ENGINES;
D O I：
10.1007/s00193-016-0677-5
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Super-knock is one of the major obstacles for improving power density in advanced internal combustion engines (ICE). This work studied the mechanism of super-knock initiation using a rapid compression machine that simulated conditions relevant to ICEs and provided excellent optical accessibility. Based on the high-speed images and pressure traces of the stoichiometric iso-octane/oxygen/nitrogen combustion under high-temperature and high-pressure conditions, it was observed that detonation was first initiated in the near-wall region as a result of shock wave reflection. Before detonation was initiated, the speed of the combustion wave front was less than that of the Chapman-Jouguet (C-J) detonation speed (around 1840 m/s). In the immediate vicinity of the initiation, the detonation speed was much higher than that of the C-J detonation.
引用
收藏
页码：687 / 691
页数：5
相关论文
共 15 条
  • [1] The Effect of EGR on Low-Speed Pre-Ignition in Boosted SI Engines
    Amann, Manfred
    Alger, Terrence
    Mehta, Darius
    [J]. SAE INTERNATIONAL JOURNAL OF ENGINES, 2011, 4 (01) : 235 - 245
  • [2] [Anonymous], 2002, SAE T
  • [3] Influence of autoignition delay time characteristics of different fuels on pressure waves and knock in reciprocating engines
    Bradley, D.
    Kalghatgi, G. T.
    [J]. COMBUSTION AND FLAME, 2009, 156 (12) : 2307 - 2318
  • [4] Numerical experiments on reaction front propagation in n-heptane/air mixture with temperature gradient
    Dai, Peng
    Chen, Zheng
    Chen, Shiyi
    Ju, Yiguang
    [J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35 : 3045 - 3052
  • [5] Effects of buffer gas composition on low temperature ignition of iso-octane and n-heptane
    Di, Haisheng
    He, Xin
    Zhang, Peng
    Wang, Zhi
    Wooldridge, Margaret S.
    Law, Chung K.
    Wang, Cuiping
    Shuai, Shijin
    Wang, Jianxin
    [J]. COMBUSTION AND FLAME, 2014, 161 (10) : 2531 - 2538
  • [6] Modes of reaction front propagation from hot spots
    Gu, XJ
    Emerson, DR
    Bradley, D
    [J]. COMBUSTION AND FLAME, 2003, 133 (1-2) : 63 - 74
  • [7] Developments in internal combustion engines and implications for combustion science and future transport fuels
    Kalghatgi, G. T.
    [J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35 : 101 - 115
  • [8] Pre-ignition and 'super-knock' in turbo-charged spark-ignition engines
    Kalghatgi, Gautam T.
    Bradley, Derek
    [J]. INTERNATIONAL JOURNAL OF ENGINE RESEARCH, 2012, 13 (04) : 399 - 414
  • [9] Male T., 1949, S COMBUSTION FLAME E, V3, P721
  • [10] Miller CD, 1947, 470207 SAE
12