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실차 조건에서의 헤드램프 주변 부품 영향으로 인한 수밀 문제에 대한 원인 분석
김찬중(Chanjoong Kim),정재훈(Jaehoon Jeong),정동혁(Donghyuk Jung) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
In the case of parts makers, product evaluation is carried out according to the development standards given by OE and performance is guaranteed. However, it is often difficult to consider the environment of the vehicle or the impact on the surrounding parts by itself. Even in the case of headlamp, the headlamp are continuously affected by engine heat and vibration and impact caused by bumpers, hoods, and fenders in the vehicle conditions. However, it is very difficult to reproduce the problem in the parts state, and it is also very difficult to analyze the cause even if the problem occurs due to this effect. Until now, this analysis had no choice but to analyze with problems occurring in the field rather than analyzing in the component state. Therefore, in this study, the cause of the problem and the analysis method are proposed by analyzing how the surrounding parts of the headlamp affect the watertight of the headlamp in the vehicle conditions and material unit.
전기 외장램프 환경조건 변화 분석 및 그에 따른 제품 개발방향과 시험평가법 제안
김찬중(Chanjoong Kim),김경희(Kyunghee Kim),최경덕(Kyungduck Choi),정재훈(Jaehoon Jeong),고민수(Minsu Ko) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
In developing and evaluating automobile parts, the environmental conditions of automobiles are the most important. In particular, in the case of exterior lamps, the development standards are very different depending on the environmental conditions of the vehicle because consumers can directly respond to parts conditions under both thermal stress from the engine and vibration stress from the vehicle body. Therefore, with the recent expansion of electric vehicles, advantages and disadvantages arise by applying the test conditions of internal combustion engines when developing parts. For example, in terms of thermal conditions, it is advantageous because there is no engine heat, and in terms of noise, it is disadvantageous because there is no engine noise. In terms of vibration, the structure and weight of the vehicle are different compared to vehicles of the same class, and the characteristics are different. Therefore, by re-researching and applying these conditions for lamps dedicated to electric vehicles, it is possible to bring cost advantages and prepare for consumer claims in advance. In this study, the environmental conditions of exterior lamps for these electric vehicles are reanalyzed and product development direction and test evaluation method that can be differentiated from internal combustion engines is proposed.
냉각장치를 이용한 헤드램프 습기 억제 시스템 개발을 위한 연구
김찬중(Chanjoong Kim),최경덕(Kyungduk Choi),고민수(Minsu Ko) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
While studies on the fogging in the headlamp so far have focused on fogging removal, this study suggests ways to suppress the generation of fogging. We have understood the mechanism of fogging to improve fogging performance in the headlamp system. and the relationship between the temperature of the headlamp housing and the fogging performance has been found by analyzing the thermal characteristics of vehicles. Finally, the method of controlling the fogging suppression using water was proposed in the humid conditions and the analysis was performed.
자동차 램프류에 사용되는 흡습제에 대한 수명 예측방법 개발
김찬중(Chanjoong Kim),고민수(Minsu Ko),정재훈(Jaehoon Jeong),김경현(Kyunghyun Kim) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
The desiccant for automobile lamps, which is currently mainly used, is very different from the desiccant used in everyday life or in industrial and logistics sites. Therefore, the generally known desiccant lifetime method should not be used. Automobile lamps are affected not only by design but also by changes in light sources and external environment. Therefore, it is necessary to estimate the life of the desiccant by considering these factors. In this study, a method of predicting the life time according to temperature, humidity, light source, and structure for the desiccant applied to the headlamp was proposed, and also a method for predicting the desiccant life according to field claims was proposed and analyzed.