Start of low temperature reactions detection based on motoring pressure prediction for partially premixed combustion

Research output: Contribution to journalArticle

Abstract

Partially premixed combustion aims to reduce NOx and particulate matter emission without fuel consumption penalty. Low temperature reactions are important for the partially premixed combustion. In the current study, a self-adaptive strategy is introduced to predict the motoring pressure by means of an equivalent isentropic index. The start of the low temperature reactions is detected when the pressure difference between the measured pressure and the predicted pressure is higher than a threshold value. Experimental results show that the maximum variation between the measured and the predicted motoring pressure before the top dead center is less than 0.02 bar. It is also demonstrated that the presented detection method is able to detect the start of the low temperature reactions under different engine operating conditions with varying injection timing, injection duration, number of injections and exhaust gas recirculation rate.

Details

Authors
Organisations
External organisations
  • Tsinghua University
  • Beijing Normal University
  • Beijing Computational Science Research Center
  • ECTEK Automotive Electronic Systems Co.
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering

Keywords

  • Equivalent isentropic index, Motoring pressure, Partially premixed combustion, Self-adaptive strategy, Start of low temperature reactions
Original languageEnglish
Pages (from-to)1101-1109
Number of pages9
JournalApplied Thermal Engineering
Volume141
Publication statusPublished - 2018 Aug 1
Publication categoryResearch
Peer-reviewedYes