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Diagnosis of Exhaust Temperature Non-uniformity of Diesel Engine Based on Infrared Temperature Measurement

YANG Kun;YANG Li;SU Gao;FAN Chun-li;College of Naval Architecture and Power Engineering,Naval University of Engineering;  
This paper designs a test-bed which is applied to detect exhaust temperature of a diesel engine by infrared measurement.The exhaust pipe surface temperature of 6135 diesel engine in different operating conditions was measured by infrared thermal imager.The calculating method of the discharge temperature of a diesel engine from the surface temperature of exhaust pipe was obtained.The relationship between discharge temperature non-uniformity and the surface temperature non-uniformity of exhaust pipe was analysed.In addition,the feasibility and effectiveness of infrared inspecting technology which is applied to diagnosis and prediction of the diesel engine exhaust temperature non-uniformity was verified.
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