Plasma Temperature of Spark Discharge in a Lean-burn Spark-ignition Engine Using a Time Series of Spectra Measurements

In this research, a spark plug with an optical fiber has been developed to obtain the emission spectra from the spark discharge and flame kernel. This developed spark plug with an optical fiber can obtain the time series of emission spectra from the spark discharge and Initial flame kernel in the real spark-ignition engine using EMCCD spectrometer. The plasma vibrational temperature of the spark discharge can be measured using the emission spectra from the electrically excited CN violet band system. The plasma of the spark discharge and gas rotational temperature of the initial flame kernel can be also measured using emission spectra from OH* radicals (P and R branches). The plasma temperature of the spark discharge was almost 8,000 K and the gas temperature of the Initial flame kernel approached that of the adiabatic flame temperature.

• Record URL:
  https://doi.org/10.4271/2019-01-2158
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Kawahara, Nobuyuki
  • Watanabe, Masanobu
  • Tomita, Eiji
  • Nagano, Yukihide
  • Kitagawa, Toshiaki
• Conference:
  • 2019 JSAE/SAE Powertrains, Fuels and Lubricants
  • Location: Kyoto , Japan
  • Date: 2019-8-26 to 2019-8-29
• Publication Date: 2019-12-19

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Electric discharge; Flames; Lean fuel mixtures; Optical fibers; Spark ignition engines; Spark plugs; Sparks; Spectrum analysis; Temperature measurement
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01742648
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2019-01-2158
• Files: TRIS, SAE
• Created Date: Jun 18 2020 9:43AM