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김현준(Hyunjun Kim),여운석(Unseok Weo),신재식(Jaesik Shin),조현우(Hyunwoo Jo),이호상(Hosang Lee),이효열(Hyoyeol Lee) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Currently, law and regulations on air environment improvement are being strengthened. Although used-vehicle emission inspections are being strengthened, emission inspections of construction machinery are notbeing implemented. Among construction machinery, dump trucks, concrete mixer trucks, and concrete pump trucks have similar structures to automobiles, so it is possible to reinforce exhaust gas inspection, In this study, we test whether load tests are possible for dump trucks, concrete mixer trucks, and concrete pump trucks, and then we study maintenance plans. As a result, it it possible to apply the inspection of construction machinery to the lud-down3 mode, which is being implemented in korea, and to reduce smoke by changing engine oil.
운행 휘발유 자동차 배출가스 검사방법 개선에 관한 연구
양진호(Jinho Yang),여운석(Unseok Yeo),조현우(Hyunwoo Jo),김현준(Hyunjun Kim),이호상(Hosang Lee) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
As interest in the environment increased, a law was established to diagnose emission-related parts and turn on MIL when defects are found, and applied to automobiles sold in California after 1988. However, there was a need for technology development to detect these devices because they generate a lot of emissions when they malfunction. Through this study, we wanted to examine whether OBD inspection is possible in-used vehicles. A test was conducted to analyze the correlation between the OBD test and the exhaust pipe test. A defect in OBD does not necessarily result in high emissions, but it has been shown that more emissions are generated on average. Therefore, it was confirmed that vehicles with a high possibility of generating exhaust gases can be selected through OBD inspection. OBD inspection can detect failures before exhaust gas-related parts are completely damaged, so it is necessary to introduce OBD inspection into vehicle inspection in order to detect early failure of emission-related parts.