High response measurement of exhaust temperature in an engine by using laser interferometry

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630407
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Naval and maritime engineering
• Research Institution: Okayama University
• Principal Investigator: TOMITA Eiji 岡山大学, 自然科学研究科, 教授 (80155556)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 温度 / 温度計測 / 干渉 / レーザ / 排気ガス / 高応答

Outline of Final Research Achievements

A compact housing with optical arrangement for interferometry was designed and made. When hot air was flowed in the measurement region suddenly with an air dryer, the temperature obtained from this interferometry system with a line-sensor camera increased faster than that with a thermocouple. The higher response of the interferometry was confirmed. Next, this housing was set between cylinder block and exhaust pipe and history of exhaust gas temperature was measured in one cycle. As a result, when the combustion delayed in a low load, at first the temperature is decreased and thereafter the temperature is increased.

Free Research Field

機械工学，熱工学