Development of Local Gas Temperature Measurement Technique inside a Combustion Chamber Using Two-Wire Thermocouple

• KOBAYASHI Shigemi

  DRD CO., LTD. Design Department

• MORIYOSHI Yasuo

  Department of Electronics and Mechanical Engineering, Chiba University

• ENOMOTO Yoshiteru

  Department of Mechanical Systems Engineering, Musashi Institute of Technology

Abstract

Thermocouples are widely used to measure the local gas temperature due to its accuracy and convenience. However, it is difficult to use thermocouples in a transient phenomenon such as reacting fields. In this study, the unsteady gas temperature inside a combustion chamber was measured by using an improved two-wire thermocouple technique. Based on previous two-wire methods, some modifications were examined. Firstly, numerical analysis of heat transfer between transient flow and thermocouple was performed to see what kind of modification was required. Secondly, a correction term was added to the basic equation, which was validated by experiments using a Rapid Compression and Expansion Machine. Finally, an improved two-wire thermocouple technique was evaluated by measuring the transient gas temperature inside a combustion chamber and compared to the estimated temperature using measured pressure data and assumptions of chemical equilibrium.

Journal

• Journal of Thermal Science and Technology

  Journal of Thermal Science and Technology 3 (3), 486-498, 2008

  The Japan Society of Mechanical Engineers and The Heat Transfer Society of Japan

Keywords

• Combustion
• Internal Combustion Engine
• Heat Transfer
• Measurement
• Local Temperature
• Thermocouple

Details

• CRID: 1390282680221034112
• NII Article ID: 130000098812
• DOI: 10.1299/jtst.3.486
• ISSN: 18805566
• Web Site: http://www.jstage.jst.go.jp/article/jtst/3/3/3_3_486/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed