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김봉조(Bong-jo Kim),전문수(Mun-soo Chun),박병완(Pyong-wan Park) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_1
Engine lubrication system is generally affected by vehicle driving conditions; acceleration, braking deceleration, and cornering. The oil supply system such as oil pan, baffle plate, and oil pick-up pipe should be optimized to cope with severe driving conditions. The main purpose of this paper is to understand the effect of the engine tilling angle on the oil supply system using engine tilling test rig. For this end, the oil pressure fluctuation in the main gallery and oil aeration in the oil pan are measured at various engine tilting angles. In addition, the oil flow using transparent oil pan is visualized to investigate the cause of the formation of oil aeration. The test results show there is a strong correlation between the main gallery oil pressure fluctuation and oil aeration. It is also found !hal the visualization technique is helpful to understand the formation process of oil aeration
김대열,한영출,조재명,김양술,주신혁,박병완 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-
An experimental study presents characteristics of combustion in a combustion chamber by port deactivation valve for economy and emissions standards. In order to use combustion properties data, it is necessary to build some data base, which use cylinder pressure sensor, etc. Port deactivation valve has been developed to satisfy requirement of achieving sufficient swirl generation to improve the combustion. A feasibility and necessity of combustion pressure based cylinder spark timing control has been examined. So, this was obtained the Coefficient of Variation(COV) and the mass-burned(MFB). The characteristics of pressure ratio fraction is similar to that of mass-burned fraction. Using the results of the test, the effects of the combustion chamber can be improved combustion stability by port deactivation.