System of Measuring the Flame Propagation of a Spark Ignition Engine by High-speed Photographs Using PLZT Shutter

Hidenori Tasaka, Kunihiro Nitawaki, Hiroshi Tajima

Research output: Contribution to journalArticle

Abstract

This paper describes a system of measuring the flame propagation of a spark ignition engine. A system using an electrooptical shutter known as the PLZT was developed and examined. Flame propagation photographs were taken by the still camera with the PLZT shutter. One characteristic of this shutter is rather lower transmissivity of light when opened. Another is slight transmissivity when closed. To solve these problems, a solution of sodium ethylate was added to the fuels to increase the brightness of the flame and a mechanical shutter was used together with the PLZT shutter. This system was examined and it was confirmed that the system satisfied the required specifications for the most part. Furthermore, an example of the flame propagation photographs and the cyclic variation of the flame area were shown when the swirl velocity was varied.

Original languageEnglish
Pages (from-to)1194-1198
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume56
Issue number524
DOIs
Publication statusPublished - 1990
Externally publishedYes

Fingerprint

Camera shutters
spark ignition
shutters
flame propagation
Internal combustion engines
photographs
engines
Luminance
Cameras
Sodium
high speed
Specifications
transmissivity
flames
specifications
brightness
cameras
sodium

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

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title = "System of Measuring the Flame Propagation of a Spark Ignition Engine by High-speed Photographs Using PLZT Shutter",
abstract = "This paper describes a system of measuring the flame propagation of a spark ignition engine. A system using an electrooptical shutter known as the PLZT was developed and examined. Flame propagation photographs were taken by the still camera with the PLZT shutter. One characteristic of this shutter is rather lower transmissivity of light when opened. Another is slight transmissivity when closed. To solve these problems, a solution of sodium ethylate was added to the fuels to increase the brightness of the flame and a mechanical shutter was used together with the PLZT shutter. This system was examined and it was confirmed that the system satisfied the required specifications for the most part. Furthermore, an example of the flame propagation photographs and the cyclic variation of the flame area were shown when the swirl velocity was varied.",
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