In-Cylinder Air Flow Characteristics of the HCCI Engine along with Variable Intake Ports

HCCI 엔진의 흡기포트 입구부 변화에 따른 유동특성 비교

One of the important operating factors for the air-fuel pre-mixed conditions in an HCCI engine is an in-cylinder flow. In this study, unsteady in-cylinder air flow characteristics in a diesel engine as a reference engine of an HCCI engine development were numerically analysed. Unsteady flow analyses were conducted with the combination of 3 intake port inlets, then the in-cylinder air flow distribution and swirl ratio results from a case were compared with the results from the other cases.