Strategies to Form Homogeneous Mixture and Methods to Control Auto-Ignition of HCCI Engine

Authors

  • I. Veza Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • M.F.M. Said Automotive Development Centre, Institute for Vehicle Systems and Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • Z.A. Latiff Automotive Development Centre, Institute for Vehicle Systems and Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • M.A. Abas Automotive Development Centre, Institute for Vehicle Systems and Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • M.R.M. Perang Automotive Development Centre, Institute for Vehicle Systems and Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • H.K. Ng Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor, Malaysia
  • A. Sule Automotive Development Centre, Institute for Vehicle Systems and Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  • T.W.B. Riyadi Mechanical Engineering, Universitas Muhammadiyah Surakarta, Surakarta 57102, Indonesia
  • N. Tamaldin Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia

DOI:

https://doi.org/10.15282/ijame.18.4.2021.09.0712

Keywords:

HCCI, Diesel, Combustion, Homogeneous, Compression ignition

Abstract

Homogeneous charge compression ignition (HCCI) engine has emerged as a promising combustion technology. Theoretically, an HCCI engine can reduce both NOx and soot emissions significantly down to almost zero levels. This is possible as a result of two fundamental processes that occur in the HCCI engine, i.e. the homogeneous mixture and its autoignition characteristics. Neither spark plug nor injector is used in the HCCI engine. The autoignition of the homogeneous mixture is solely influenced by its chemical reactions inside the combustion chamber. However, this is where the problems start to occur. At low loads or too lean mixtures, misfire may occur, thus increasing the HC and CO emissions. At high loads or too rich mixtures, soot emissions and knocking tendency may increase. Moreover, an undesirable pressure rise due to knocking will increase the combustion temperature and potentially increase the probability of NOx formation. Therefore, the operating range of HCCI engine is very limited only to part loads. Controlling its combustion phasing play an important role to extend the narrow operating range of the HCCI engine. Despite numerous review articles have been published, classification of the approaches to achieve HCCI combustion in diesel engines were rarely presented clearly. Therefore, this review article aims to provide a concise and comprehensive classification of HCCI combustion so that the role and position of each strategy found in the literature could be understood distinctively. In short, two important questions must be solved to have successful HCCI combustion; (1) how to form a homogeneous mixture? and (2) how to control its auto-ignition?

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Published

2021-12-21

How to Cite

Veza, I., Said, M. F. M., Latiff, Z. A., Abas, M. A., Perang, M. R. M., Ng, H. K., A. Sule, T.W.B. Riyadi, & N. Tamaldin. (2021). Strategies to Form Homogeneous Mixture and Methods to Control Auto-Ignition of HCCI Engine. International Journal of Automotive and Mechanical Engineering, 18(4), 9253–9270. https://doi.org/10.15282/ijame.18.4.2021.09.0712