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乘用車 點火시스템의 EMR 特性에 關한 實驗的 硏究(Ⅱ)
박종남(J.N.Park),박진용(J.Y.Park),이준서(J.S.Lee),한경(K. Han),장우종(W.J.Jang),차경옥(K.O.Cha) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The ignition system of any sparked-ignited internal combustion engine-powered device is well recognized as a major sources of radiated electromagnetic interference(EMI). Measurements of the electromagnetic noise radiated by automotive ignition systems were made at 150 ㎑ ~ 1 ㎓. With the widespread use of various electrical applicances in daily life, there has been an increase in unnecessary radiated electromagnetic waves influencing many spheres of social life. In addition to the radiation of unnecessary electromagnetic waves by electrical machinery, considerable noise arises from ignition systems of internal combustion engine. Automotive ignition noise is due to fast rise-time(impulsive) currents that flow in the vehicle's wiring. The three major sources of impulses are the breakdown in the distributor of the gap between the rotor and the posts, the breakdown of the spark plug gap, and the closure of the breaker points. Each of these sources can be threated individually to suppress the ignition noise.<br/>
승용차 점화시스템의 EMR 특성에 관한 연구(1); 측정과 해석
박종남(J.N.Park),이준서(J.S.Lee),성현수(H.S.Sung),신승현(S.H.Shin),차경옥(K.O.Cha) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
The ignition system of any sparked-ignited internal combustion engine-powered device is well recognized as a major sources of radiated electromagnetic interference (EMI). Measurements of the electromagnetic noise radiated by automotive ignition systems were made at 150 KHZ ∼ 1 GHZ. With the widespread use of various electrical applicances in daily life, there has been an increase in unnecessary radiated electromagnetic waves influencing many spheres of social life. In addition to the radiation of unnecessary electromagnetic waves by electrical machinery, considerable noise arises from ignition systems of internal combustion engine. Automotive ignition noise is due to fast rise-time(impulsive) currents that flow in the vehicle's wiring. The three major sources of impulses are the breakdown in the distributor of the gap between the rotor and the posts. the breakdown of the spark plug gap, and the closure of the breaker points. Each of these sources can be threated individually to suppress the ignition noise.<br/> <br/> <br/>
SAPH400의 CO₂ 레이저 절단시 절단특성에 관한 연구
박종남(J. N. Park),조규재(G. J. Cho) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
In the cutting of plate steel, the quality of the cut surfaces is strongly dependent on the cutting conditions such as cutting speed, plate thickness, power, kerf width and gas pressure etc. The cutting tests of Steel Automobile Press Hot were carried out using CO₂ Laser cutting machine. The kerf width and surface roughness of a section are examined at various cutting conditions. This paper deals with cutting characteristics of Steel Automobile Press Hot(SHPH400) using CO₂ Laser Cutting Machine.