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.
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
