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[論文] 순간온도 계측 프로브를 사용한 피스턴 표면 온도측정
이성열(Songyol Lee),이영조(Young Jo Yi) 한국자동차공학회 1990 오토저널 Vol.12 No.6
In order to measure the piston surface temperature and heat flux, autors have developed the measuring system with an instantaneous temperature probe. Such the instantaneous temperature probes were embodied into the top of piston for measurement and L-link system, designed to fit the test engine, extracts the thermocouple wires from the piston outside of engine employing a mechanical linkage. Then the instantaneous surface temperature was measured to calculate the heat flux flowing into the top surface of piston in a spark ignition engine.<br/> As a result, the following phenomena have been obtained through the study.<br/> 1) It is found that the time response and durability of temperature probe with a thin film thickness 10um and mechanical linkage with thermocouple wire extraction is sufficient at this experiment.<br/> 2) For the quantitative effect of variation in engine speed, the temperature swing and heat flux on the top of piston increase with increasing the engine speed.<br/> 3) It is proved that the temperature swing and heat flux decrease with distance from spark plug.