2025-5-31- Sunday
HomeIntroductionEditorial boardContact usChinese
Home > Archive>Volume 46, Issue 09, 2018 >1281-1288. DOI:10.11908/j.issn.0253-374x.2018.09.016
PDF HTML XML Export Cite reminder
Effect Mechanism of Air/Fuel Ratio on Ion Current Signal
CSTR:
[cstr]
Author:
Clc Number:

TK411.2

  • Article
    • | |
  • Metrics
    • |
  • Reference [18]
    • |
  • Related [20]
    • | | |
  • Comments
    Abstract:

    The effect of air/fuel ratio on ion current signal was studied with methane as the fuel in a highpressure constant combustion vessel. The results show that the peak value of ion current signal is the highest and the peak timing is also the most advanced when the excess air ratio is 0.90. The ion formation process, concentration, and distribution were numerically simulated with the established methane ionization mechanism model. The simulation results show that chemical ionization occurs in the flame front and the main ion product is H3O+ while thermal ionization occurs in the high temperature postflame area. The main ion product is NO+. Chemical reaction path analysis results indicate that when the excess air ratio is 0.90, and the neat production rate and concentration of H3O+ and NO+ are the highest, which results in the highest value of chemical ionization peak and thermal ionization peak.

    Reference
    [1] Mehresh P, Dibble R W, Flowers D. EGR effect on ion signal in HCCI engines[J]. Sae Technical Papers, 2005, 114:1487-1493.
    [2] Mehresh P, Souder J, Flowers D, et al. Combustion timing in HCCI engines determined by ion-sensor: experimental and kinetic modeling[J]. Proceedings of the Combustion Institute, 2005, 30(2):2701-2709.
    [3] Bogin G E J. Characterization of ion production using gasoline, ethanol, and N-heptane in a homogeneous charge compression ignition (HCCI) engine[J]. Dissertations & Theses - Gradworks, 2008.
    [4] Butt R H, Chen Y, Mack J H, et al. Improving ion current of sparkplug ion sensors in HCCI combustion using sodium, potassium, and cesium acetates: Experimental and numerical modeling[J]. Proceedings of the Combustion Institute, 2015, 35(3):3107-3115.
    [5] Mack J H, Butt R H, Chen Y, et al. Experimental and numerical investigation of ion signals in boosted HCCI combustion using cesium and potassium acetate additives[J]. Energy Conversion & Management, 2016, 108(11):181-189.
    [6] Fan Q, Bian J, Lu H, et al. Misfire detection and re-ignition control by ion current signal feedback during cold start in two-stage direct-injection engines[J]. International Journal of Engine Research, 2014, 15(1):37-47.
    [7] Tong S, Li H, Yang Z, et al. Cycle Resolved Combustion and Pre-Ignition Diagnostic Employing Ion Current in a PFI Boosted SI Engine[J]. Sae Technical Papers, 2015, 2015.
    [8] 张志永, 李从跃, 曹银波,等. 基于离子电流反馈的失火循环内补火控制试验[J]. 内燃机学报, 2012(1):56-61.
    [9] Liu Y, Li L, Lu H, et al. In-Cycle Knocking Detection and Feedback Control Based on In-Cylinder Pressure and Ion Current Signal in a GDI Engine[C]// SAE 2016 World Congress and Exhibition. 2016.
    [10] Balles E N, Vandyne A, Wahl A M, et al. In-Cylinder Air/Fuel Ratio Approximation Using Spark Gap Ionization Sensing[J]. 1998.
    [11] 李建文, 徐正飞, 刘金华,等. 空燃比对离子电流信号影响的试验研究[J]. 车用发动机, 2008(4):74-76.
    [12] Abdel-Rehim A A, Henein N A, Vandyne E. Impact of A/F Ratio on Ion Current Features Using Spark Plug with Negative Polarity[J]. SAE International Journal of Passenger Cars - Electronic and Electrical Systems, 2008, 1(1):432-445.
    [13] 陆海峰. 新型高能点火系统开发及稀释燃烧特性基础研究[D]. 上海：同济大学, 2017：1-202.
    [14] Prager J, Riedel U, Warnatz J. Modeling ion chemistry and charged species diffusion in lean methane–oxygen flames ☆[J]. Proceedings of the Combustion Institute, 2007, 31(1):1129-1137.
    [15] Aithal S, White A, Subramaniam V. Kinetic modeling of an ionization sensor for combustion processes[C]// Plasmadynamic and Lasers Conference. 2013.
    [16] Alquaity A B S, Chen B, Han J, et al. New insights into methane-oxygen ion chemistry[J]. Proceedings of the Combustion Institute, 2016.
    [17] Rao R, Honnery D. A simplified mechanism for the prediction of the ion current during methane oxidation in engine-like conditions[J]. Combustion & Flame, 2015, 162(7):2928-2936.
    [18] Smith G P, Golden D M, Frenklach M, et al. GRI-Mech 3.0, 1999[J]. Gas Research Institute, http://www. me. berkeley. edu/gri_mech, 2011.
    Cited by
    Comments
    Comments
    分享到微博
    Submit
Get Citation

ZHU Denghao, LI Chao, DONG Guangyu, DENG Jun, HU Zongjie, LI Liguang. Effect Mechanism of Air/Fuel Ratio on Ion Current Signal[J].同济大学学报(自然科学版),2018,46(09):1281~1288

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:January 07,2018
  • Revised:June 25,2018
  • Adopted:June 11,2018
  • Online: October 17,2018
Article QR Code

Youare the 104258 visitor to this site

Copyright:JOURNAL OF TONGJI UNIVERSITY     Director:The Ministry of Education    The host:Tongji university.

Address:上海市四平路1239号同济大学内    Postcode:200092    TEL:86-21-65982344     E-mail:zrxb@tongji.edu.cn

Supported byBeijing E-Tiller Technology Development Co.,Ltd.