CAJ | 학술논문

提出了双压共轨的概念,阐明了双压共轨系统(DPCRS)的结构组成和工作原理,建立了系统仿真模型,对系统的喷射特性进行了仿真研究.研究结果表明:双压共轨电控喷油系统能够实现基压可调以及基压、高压的灵活转换,可以实现更加灵活的喷油规律.通过仿真研究了喷射压力及喷油规律变化对喷射特性的影响,如贯穿度和喷射锥角.仿真结果得到了相关试验的证明.
제출료쌍압공궤적개념,천명료쌍압공궤계통(DPCRS)적결구조성화공작원리,건립료계통방진모형,대계통적분사특성진행료방진연구.연구결과표명:쌍압공궤전공분유계통능구실현기압가조이급기압、고압적령활전환,가이실현경가령활적분유규률.통과방진연구료분사압력급분유규률변화대분사특성적영향,여관천도화분사추각.방진결과득도료상관시험적증명.
A concept of dual pressure common rail system(DPCRS) was proposed. The configuration and working principle of DPCRS were introduced, then a program was built up to study the working characteristics of DPCRS. The simulated results show that DPCRS can realize more flexible fuel injection rate shaping easily, based on basic pressure adjustment and transfer between basic pressure(rail pressure) and high pressure(intensified pressure). The influence of injection pressure and injection rate shaping on the spray characteristics was investigated. At the same fuel injection quantity, the higher injection pressure the shorter injection duration, the longer penetration and the bigger spray cone angle. The simulated results were confirmed by experimental results.