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이종태(Jongtae Lee),박준홍(Junhong Park),김선문(Sunmoon Kim),안근환(Keunwhan Anh),한보영(Boyoung Han) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Vehicle emission test modes for certification have limitation to reflect various real driving conditions. To raise the effectiveness of vehicle emission regulation, it is required to estimate vehicle emission based on real road driving. In this study, real driving emission measurements have been conducted for 3 Korean light-duty vehicles with PEMS. The driving routes consisted of urban, rural and motorway in Seoul and Incheon. For averaged emission in routes, a gasoline and a LPG vehicles showed the lower THC, CO and NOx emission than those of CVS-75 used for emission certification. But real driving NOx of a light duty diesel vehicle is quite higher than limit value of NEDC. The results of analysis with moving averaging window have shown also that real driving NOx of a light duty diesel vehicle is quite different from that of NEDC driving.
이동구간평균법을 이용한 소형화물트럭의 도로 주행 배출가스 평가
박준홍(Junhong Park),김정수(Jeongsoo Kim),이종태(Jongtae Lee),김선문(Sunmoon Kim),안근환(Keunwhan Ahn),한보영(Boyoung Han) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Vehicle emission test with conventional driving cycle and equipment could provide data with good representation and repeatability. But the laboratory test has limit to reflect various real driving patterns and conditions. With the improvement of PEMS, real driving emission regulation has been set up for heavy duty vehicles. European Commission is studying the feasibility that the PEMS could be applied to light duty vehicles. The real driving emission is varied as much as driving parameters and conditions. The moving averaging window method has been introduced to EURO-6 PEMS regulation for heavy duty vehicles. In principle the method could be applied to light duty vehicles. The real road emissions of a diesel fuelled light duty truck have been analyzed with CO₂ based moving averaging windows method. The result show that NOx emission is deviated considerably from emission standard due to the uncontrolled EGR in highway driving.
박준홍(Junhong Park),이태우(Taewoo Lee),이종태(Jongtae Lee),김선문(Sunmoon Kim),안근환(Keunwhan Anh),한보영(Boyoung Han) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Pollutant emissions from heavy-duty vehicles have been controlled with the engine emission test in certification phase. Recently, real driving emission measurement with PEMS has been introduced to in-use compliance test for pollutant emissions of heavy-duty vehicles. Korea has followed European regulation for reducing air pollutants from heavy duty vehicles. In this study, real driving emission measurements have been conducted for 2 Korean heavy-duty trucks of EURO-5. The measured data were analyzed with the work-based moving averaging window method in the provision of in-service conformity test for EURO-6. The real driving NOx emission are quite higher than the limit value of ETC. The value of 90 percentile for NOx conformity factor was about 2.0. It is higher than the requirement of EURO 6.
국제 표준 소형차 배출가스 주행모드 초안의 국내차 적용성 평가 연구
박준홍(Junhong Park),이태우(Taewoo Lee),이종태(Jongtae Lee),김선문(Sunmoon Kim),안근환(Keunwhan Anh),한보영(Boyoung Han) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
For emission regulation of Korean light-duty vehicles, CARB provisions have been introduced to gasoline and LPG vehicles and European provisions to diesel vehicles. In UN ECE WP29, world-harmonized light-duty test procedure (WLTP) has been being developed with participation of EU, Japan, US EPA, Korea and so on. In the future, WLTP is expected to be introduced to pollutant and CO2 emission test in Korea. A draft harmonized test cycle, WLTC, was released and validation test is ongoing which will be done by 2012. In this study, we compare driving parameters of WLTC with those of conventional Korean emission certification test modes and analyze the characteristics to reflect Korean real driving patterns with chi square test method. 3 Korean vehicles were tested with draft WLTC and the results were compared with those of conventional test cycles.
급성메탄올중독사고, 왜 발생했으며, 그 대책은 무엇인가?
박정선 ( Jungsun Park ),김양호 ( Yangho Kim ),김수근 ( Soo Geun Kim ),박종식 ( Jong-shik Park ),한보영 ( Boyoung Han ),정은교 ( Eun Kyo Chung ) 한국산업보건학회 (구 한국산업위생학회) 2016 한국산업보건학회지 Vol.26 No.4
Objectives: Acute methanol poisonings known to be typical occupational diseases occurring in developing countries broke out in sub-contract manufacturers in the early 2016. The present paper attempted to identify underlying causes which hide under apparent findings, and suggest alternative policies to prevent recurrence of similar intoxication Methods: We evaluated occupational health and safety characteristics of workers in micro-enterprises similar to workplaces with methanol poisoning by in depth-interview of employers, workers, and labor inspectors, and literature review. Results: The common findings of workplaces with methanol poisoning were addressed; First, the victims were illegal agency workers. Second, the workplaces were sub-contract micro-manufacturers with less than 5 employees. Investigators found that local ventilations did not work, while most of workers did not wear any proper personal respiratory protective equipment in the workplace. In addition, periodic environmental monitoring and medical check-ups were not done. However, these apparent findings do not appear to be root causes of methanol poisoning. Our in depth-analysis clarified a root cause; micro-enterprises with less than 5 employees are exempted with essential regulations of OSH Act, and employers do not know about OSH Act. Conclusions: We suggest occupational health policies to prevent recurrence of similar intoxication; First, government should introduce programs so that all employers should know about employers` responsibilities in OSH Act from the start of business. Second, even manufacturers with less than 5 employees should not be exempted with essential regulations of OSH Act. Finally, employers should take responsibilities for health and safety of all the workers including agency workers working in workplaces.