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조립식 경량 캠 샤프트 내구성 및 신뢰성 향상에 관한 연구
나완용(Wan Yong Na),이문석(Mun Seok Lee),최현규(Hyeon Gyu Choi),최연수(Yeon Soo Choi) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The aim of this study is to evaluate durability and reliance on lightweight assembled camshaft. The reliance valuation was performed by analyzing the cause of failure from field data and making improved tools through process Improvement. Durability and endurance test were implemented during the evaluation process. Solidity test, texture test by rubbing. cutting strength test. torque wrench test were all performed for test items and a valuation basis. The endurance test was performed in order to find out the volume of abrasion. The improvement items through the durability valuation guarantee more durability and decrease the rate of defects. This study is accomplished by the Ministry of Commerce Industry and Energy for the improvement of Reliance on Small Business.
한대희(Dae Hee Han),유승동(Seung Dong Yu),이강원(Gang Won Lee),민병도(Byeong Do Min),오재건(Jae Geon Oh),이성만(Sung Man Lee),나완용(Wan Yong Na) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The standard time(ST) is very important part of management efficiency and cost in automobile repair industry. There are many methods of work measurement of automobile repair time in korea. So we have studied differences of work measurements. The main goal of this study is to make people in automobile repair industry understand work measurement.
민병도(Byeong Do Min),이강원(Gang Won Lee),유승동(Seung Dong Yu),한대희(Dae Hee Han),오재건(Jae Geon Oh),이성만(Sung Man Lee),나완용(Wan Yong Na) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The standard time(ST) is very important part of management efficiency and cost in automobile repair industry. There are many methods of work measurement of automobile repair time in korea. So we have studied differences of work measurements. The main goal of this study is to make people in automobile repair industry understand work measurement.
소형엔진의 배출가스측정방법에 따른 질소산화물 및 매연에 관한 연구
한영출,나완용,오용석,문병철,박봉규,박귀열 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.3
Recently, increasing usage of diesel vehicle, many countries try to reduce the pollutant materials by emission regulation standard. Particularly, in our country, the supplement ratio of diesel vehicle is high, and air pollution by vehicle exhaust gas is very serious. So, in study, we tested exhaust gas by various mode in light duty diesel engine. Therefore, we can know about NOx and smoke seriousness.