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- 저자 : 정영달(Yongdal Jung) (검색결과 4 건)
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운행 자동차의 첨단 자동차검사 시스템 도입에 관한 연구
여운석(Unseok Yeo),박원덕(Wondeok Park),정영달(Yongdal Jung),오상엽(Sangyeob Oh),강병도(Byungdo Kang) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
According to vehicle control regulations in 1917, vehicle inspection system of a vehicle in service has been conducted by the transportation safety authority and non-official servicing shops. In advanced country, a vehicle safety inspection system has been conducted according to its real situation. Especially, Japan, Germany and USA etc. make an effort not only the reliability, but also the quality of a safety inspection service by introducing an advanced vehicle inspection system. But, in korea, trying to improve the operation such as the development of a computing system, the automation of inspection equipment and inspection standard service etc. by the transportation safety authority during about 50 years, the existing vehicle safety inspection system has been conducted without the improvement of a special legal and system. In this study, in order to develope and introduce an advanced vehicle safety inspection system, which apply flexibly to new vehicle design technology and consider to the reliability and facility, we try to improve the efficiency of advanced safety inspection methods by comparing exist safety inspection methods with advanced safety inspection methods. And advancing the safety inspection equipment on the base of this study"s result, the purpose of this study make an offer to not only setting the equipment with applicable in inspection center, but also increasing the effectiveness of the vehicle inspection system, withdrawing inconvenience according to inspection a vehicle in service, and optimal servicing a vehicle safety inspection. Especially, up to now, the study on a safety inspection for a vehicle in service after a delivery new vehicle was not sufficient, we provide the fundamental data to a government policy on the base of this study"s result.
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여운석(Unseok Yeo),박원덕(Wondeok Park),정영달(Yongdal Jung),강병도(Byungdo Kang) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Vehicle owner can check Engine, Engine oil, and belt condition to do with the emission by opening the bonnet. However, the safety of vehicle has a direct implication with parts such as Steering system, Wheel and Tires, and Power trans system. They are located in underside of vehicle. To check into defective parts, there needs to be a separate unit such as Pit or Lift. According to CITA guidelines, it is recommended to have Pit or Lift fit up a jack and light, it is required (must have) to have Brake inspection equipment and Head Lamp inspection equipment, while inspection equipment such as, Wheel alignment indicator, Wheel spinner and Wheel play detector is an option. The most important part of vehicle safety inspection item are Underbody Inspection, Braking force Inspection, and Head Lamp Inspection. There are two main parts of Underbody inspection: Pit or Lift. Korea only use Pit Inspection, but developed countries use both with Lift and Pit Inspection depending on the size of vehicle. For an inspection, UVIS Inspection equipment is researched and being developed. Also, Underbody Inspection auxiliary equipment like Wheel play detector, and Underbody hydraulic jack has been adopted to maximize the effectiveness. In this study, we are to ensure the most effective Inspection.
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여운석(Unseok Yeo),박원덕(Wondeok Park),정영달(Yongdal Jung),강병도(Byungdo Kang) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Fabrication technology continues to improve with the development of the vehicle industry. With these improvement, technology is continuously developed accordingly in various fields. Inspection equipments are used for manufacturing research and development. It is also used to check vehicle in service. There is a variety vehicle inspection. To prevent vehicle accident, to prevent modified vehicle or non-licensed vehicle, to make sure that our transport environment, to keep our environments clean by providing vehicles emission, and to proprietorship, etc..The most important part of the vehicle inspection is encouraging vehicle inspection, and to locate a faulty vehicle then it lead to repair to prevent an accident. Research internal and external, accident by faulty vehicle is occupies half by brake and tire. And brake ability correctly testable about brake to equipment invitation of excellent performance will prevent by faulty brake. Thus, in this study, to fit on advanced internal reality, we institute dynamic braking inspection equipment testable brake ability on driving state(8~12km/h), then go into correlation of the existing Roller brake system. And after improve characteristic analysis of inspection equipment from problem. So in our research, we used the dynamic braking inspection equipment to test brake ability while in motion, then Roller brake system inspection, and the characteristic analysis of the inspection.
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오상엽(Sangyeob Oh),여운석(Unseok Yeo),박원덕(Wondeok Park),정영달(Yongdal Jung),강병도(Byungdo Kang) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
In the most of a nation, the safety and emission gas inspection system of a vehicle in service have been conducted with the most compatible inspection system according to its real environmental situation. Especially, the state of vehicle emission gas is measured by advanced emission gas inspection equipment. It has the problem that the decrease effect of an environmental pollution matter is not calculated by weight percent measurement type equipment. Therefore, in this study, the correlations for the results of emission gas measurement are analyzed by comparing a weight percent measurement type(Idle+ASM2525 mode) and an advanced mass measurement type(IM240 mode). As the result, the selectivity of an emission gas by IM240 mode is higher than that by Idle+ASM2525 mode. In the future, therefore, the introduction of IM240 mode and a mass measurement type equipment are necessary. Also, the preparation of a vehicle emission gas inspection system is need to introduce IM240 mode.
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