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Construction of Map for Transient Condition of a Sl Engine and Refinement of Intake Air Model & Fuel Model  

심연섭 (서울대학교 기계항공공학부)
강태성 (서울대학교 기계항공공학부)
강승표 (서울대학교 기계항공공학부)
고상근 (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.5, 2002 , pp. 1-8 More about this Journal
Abstract
For gasoline engines, a three-way catalytic converter that has the maximum efficiency at stoichiometric air/fuel ratio is used to clean up the exhaust gas. So a precise air/fuel ratio control is necessary to maximize the catalytic conversion efficiency, For a transient condition, a fred-forward air/fuel ratio control method that estimates the air mass inducted into a cylinder is being used. In this study, a fuel injection map that makes an accurate air/fuel ratio control possible was constructed for the very same transient condition. For the same condition above, intake air model and fuel model were refined so that fuel injection values based on air mass through a throttle valve and intake manifold pressure are equal to the map values.
Keywords
Integration type ultrasonic flow meter; Air/fuel ratio control; Transient condition; Fuel injection map;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Throttle Movement Rate Effects on Transient Fuel Compensation in a Port-Fuel-Injected SI Engine /
[ J.S.Cowart;W.K.Cheng ] / SAE 2000-01-1937
2 실린더별 공연비 차이를 고려한 광역산소센서의 출력 예측과 SI엔진의 공연비제어 /
[ 박진일 ] / 서울대학교 공학박사학위논문
3 An Analysis of Air to Fuel Ratio Response in a Multi Point Fuel Injected Engine Under Transient Condition /
[ G.Almkvist;S.Eriksson ] / SAE 932753
4 Fuel Transport Characteristic of Spark Ignition Engines for Transient Fuel Compensation /
[ P.J.Shayler;Y.C.Teo;A.Scarisbrick ] / SAE 950067
5 Model-Based Air-Fuel Ratio Control of a Lean Multi-Cylinder Engine /
[ N.P.Fekete;U.Nester;I.Gruden;J.D.Powell ] / SAE 950846
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[ 김중일 ] / 서울대학교 공학박사학위논문
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8 적분형 초음파 유량계를 이용한 MPI엔진의 비정상상태 공연비제어 /
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