内部加热双线圈GDI喷油器性能研究

打开文本图片集

Research on the Performance of Internal Heating Dual-coil GDI Injector

Chen Yong Jingdezhen University，Jingdezhen 333ooo，China

Abstract：ToadresstheshortcomingsoftraditionalGDinjectors，suchaspoorfuelatomizatioandslowresponsespedinlowtemperatureenviroments，thispperproposesaniterallyeateddual-coilGDjectorstructure.Bydsignigadual-coildrieoduleandinteralheatingunit，theproposeddesignenhancesboththeinjector'sactivationresponsespeedandfuelflowperforanceunderlow-temperatureconditios.Throughacombnatioofexperimentalandsulationmethods，thistudyinvestigatestheeltomag netic response characteristics，spray characteristics，and fuel economyofthe injector.Results demonstrate thatat -20∘C low-temperature conditions，the internally heated dual-coil GDI injector achieves a 15%～20% reduction in injection response time compared to conventional injectors，an 8%～12% decrease in fuel atomization particle size（SMD），and a 3%～5% improvement in engine thermal efficiency.This innovation provides critical technical support for optimizing GDI engine performance.

KeyWords：GDI injector;Internal heating;Dual-coil;Electromagnetic response;Spray characteristics

1前言

面对全球能源危机，环保法规不断收紧，高效节能低排放成为发动机发展主流，汽油直喷GDI技术以其燃油喷射准、燃油利用率高的特点在乘用车发动机上得到广泛应用。（剩余5016字）