Development of Instantaneous Surface Temperature Sensor for Reduction of Heat Losses in Internal Combustion Engines

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Daijiro Ishii
Yuji Mihara
Jaehoon Jeong
Hideki Koike
Susumu Sato
Hidenori Kosaka


In this research, thin-film temperature sensor (thin-film thermocouple) was directly formed on the surface of combustion chamber of a Rapid Compression and
Expansion Machine(RCEM) which imitated the internal combustion engines using a PVD (physical vapour deposition) method, and it aims at high accurate and high
response measurement of instantaneous temperature change from a compression stroke to a combustion start timing. In this paper, the newly developed structure and form of thinfilm thermocouple was described using one-dimensional numerical calculation in order to reduce the measurement error for real surface temperature. Moreover, the example measurement results of instantaneous temperature using RCEM were reported.


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