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Key Words: Solenoid-Driven Injector(솔레노이드인젝터), Piezo-Driven Injector(피에조인젝터), Inverse Piezo-Electric Effect(역압전효과), AMESim Simulation Code(AMESim 해석코드), CRDi System(커먼레일직접분사시스템)초록: 고압인젝터의성능은디젤연소엔진의동력, 배출물, 연료소모와직접적인관계가있다. 본논문에서는솔레노이드코일과피에조세라믹으로구동되는커먼레일디젤분사용인젝터의응답특성을AMESim 코드를사용하여상대비교연구를수행하였다. 따라서연료압력, 분공경을주요해석변수로설정하였다. 본연구를수행한결과, 솔레노이드구동인젝터에비해피에조구동인젝터가상대적으로더빠른응답성과더높은제어성을가짐을알수있었으며, 특히다단분사적용시, 이런결과가매우효과적임을확인할수있었다.Abstract: It is well known that the performance of a diesel injector is directly related to the power, emission,and fuel consumption of the diesel combustion engine. In this study, the injection response characteristics ofCRDi injectors driven by a solenoid coil and a piezoceramic were investigated by using the AMESimsimulation code. Some analytical parameters such as the fuel pressure and hole diameter were considered.From this study, it was shown that the piezo-driven injector had a faster response and had better controlcapability than the solenoid-driven injector. In addition, it was found that the piezo-driven injector can beutilized more effectively in a multiple injection scheme than a solenoid-driven injector. |
