Experimental study on the factors affecting lean combustion limit of S.I. hydrogen-natural gas engine

Xin Wang*, Hong Guang Zhang, Bao Feng Yao, Xiao Na Sun, Yan Lei, Dao Jing Wang, Xiao Lei Bai, Yun Shan Ge

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

An experimental study was conducted on a spark ignition engine to investigate the factors that affect the lean combustion limit of hydrogen-natural gas engine. The effects of ignition timing, hydrogen mixing ratio, engine speed, throttle opening, lubricant oil and coolant temperature were examined. The engine speed was 1500-3000 r/min, the throttle opening was 10%-40%, the lubricant temperature was 75°C-95°C, and the coolant temperature was 65°C-85°C during experience. The hydrogen mixing ratio varied from 0 to 40%, and the lean-combustion limit ignition timing was defined and adopted. The result shows that both over-retarded and over-advanced ignition timing would baffle the extension of lean-combustion limit. The lean-combustion limit increases with hydrogen mixing ratio, slightly increases with throttle opening, and decreases when the engine speed is raised. Besides, it decreases with the increase in lubricant temperature. Warming-up coolant is positively related to enlarge the lean-combustion limit.

Original languageEnglish
Pages (from-to)776-781
Number of pages6
JournalBinggong Xuebao/Acta Armamentarii
Volume33
Issue number7
Publication statusPublished - Jul 2012

Keywords

  • Hydrogen
  • Internal combustion engine
  • Lean combustion limit
  • Natural gas
  • Power mechanical engineering

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