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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/>
張宇種,朴鎭庸,한경,李珉湖,車京玉 明知大學校 産業技術硏究所 1997 産業技術硏究所論文集 Vol.16 No.-
This paper describes a theoretical and exprimental investigation of the pressure-time histories of some basic internal combustion engine exhaust systems. The program package is written in Fortran 77 and utilizes the Method of Characteristics to solve the general equations of one-dimensional unsteady gas flow. Using a rotary valve exhaust simulator, experimental pressure-time histories were obtained. The predictions are compared with measured results and show a high degree of correlation.