Measurement and Verification of Combustion Temperature for In-Cylinder Medium of Diesel Engine

KONG Xiangxin; LIU Fengchun; JI Shude; MA Dongyuan; WEI Pengcheng; HUANG Xu

Vehicle Engine ›› 2021, Vol. 0 ›› Issue (5) : 47-51.

KONG Xiangxin,LIU Fengchun,JI Shude,MA Dongyuan,WEI Pengcheng,HUANG Xu

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Abstract

For the measurement requirement of combustion temperature of in-cylinder high-temperature compression medium from a high power density diesel engine, the method of two-color infrared temperature measurement was proposed to solve the difficulty that temperature could not be measured with the traditional method due to its applicability, feasibility and test effect. The two-color infrared temperature measurement system was designed and the verification was conducted on the objective diesel engine. The results show that the in-cylinder cycle average transient maximum temperature increases with the increase of power and the in-cylinder temperature and pressure have the same period in the time domain. For a single cycle, temperature reaches the maximum after the maximum pressure during the latter of slow combustion period. The results verify the effectiveness of this measuring method.

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diesel engine / two-color method / temperature measurement / test verification

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KONG Xiangxin,LIU Fengchun,JI Shude,MA Dongyuan,WEI Pengcheng,HUANG Xu. Measurement and Verification of Combustion Temperature for In-Cylinder Medium of Diesel Engine[J]. Vehicle Engine. 2021, 0(5): 47-51