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성낙원(N.W.Sung),정용일(Y.I.Jeong),박신현(S.H.Park) 한국자동차공학회 1987 오토저널 Vol.9 No.5
The control technique for an electronic engine is studied. For this study an IBM-PC and a throttle body fuel injection system are selected. The computer controls fuel injection, spark timing, exhaust gas recirculation and idle speed. Fuel injection is adjusted either by a feedback signal of a zirconia O₂ sensor or programmed logic for starting, acceleration, deceleration, warming up and idle modes. When a 3-way catalytic converter is used with the electronic engine control system, CO, THC, and NOx were reduced more than 90% simultaneously.
[論文] 국산 가솔린 엔진용 저배기공해 System에 관한 연구
성낙원(N. W. Sung),정용일(Y. I. Jeong),박신현(S. H. Park),우세종(S.J. Woo) 한국자동차공학회 1986 오토저널 Vol.8 No.3
In this study, low emission gasoline engine system is developed utilizing an EGR valve, 3 way catalytic converter and electronic fuel injection system. EGR was controlled by a needle valve and optimized at the engine conditions. Throttle body fuel injection system is used for fueling. When the engine was operated at constant speed by the electronic engine control system with the 3 way catalytic converter, the emissions were reduced by 50 to 90% in volume depending on the engine operating conditions.