Pulsed combustion jet ignition in lean mixtures

Eiichi Murase, S. Ono, K. Hanada, Antoni K. Oppenheim

Research output: Contribution to conferencePaperpeer-review

42 Citations (Scopus)


Lean-burn is the most attractive way to lower emissions of NOx while improving the fuel consumption simultaneously in spark ignition engines. A Pulsed Combustion Jet (PCJ) ignition system has a great potential to enhance ignition reliability and burning rate of lean fuel-air mixtures. Its action is based on the utilization of turbulent plumes formed by jets produced by generators, in the shape and size of an ordinary spark plug, that embody a small (500 mm3 or less) cavity, capped with an orifice plate and outfitted with a hollow electrode. Performance characteristics of PCJ were established by combustion tests carried out in a diskshaped, constant volume combustion chamber using lean methane-air mixtures. The results were compared to those obtained with Pulsed Plasma Jet (PPJ) an standard spark plug ignition systems. Lean limit was extended most by PCJ ignition under both quiescent and swirl conditions. In the case of swirl, it was revealed that the flame holding in the region of maximum swirl velocity was of prime significance in enhancing the combustion rate. In PCJ, the jet plume ejected from the orifice of the generator displayed a similar flame-holding effect, yielding good performance characteristics.

Original languageEnglish
Publication statusPublished - Dec 1 1994
EventFuels and Lubricants Meeting and Exposition - Baltimore, MD, United States
Duration: Oct 17 1984Oct 20 1984


OtherFuels and Lubricants Meeting and Exposition
Country/TerritoryUnited States
CityBaltimore, MD

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


Dive into the research topics of 'Pulsed combustion jet ignition in lean mixtures'. Together they form a unique fingerprint.

Cite this