增压式共轨喷射系统结构改进研究  

Structure Improvement for Pressure-intensified Common Rail Injection System

作　　者：陈海龙[1] 欧阳光耀[1] 张静秋[1] 程付安 喻雄飞 

机构地区：[1]海军工程大学船舶与动力学院 [2]海军92003部队 [3]海军广州地区监修室

出　　处：《车用发动机》2010年第2期42-45,共4页Vehicle Engine

基　　金："十一五"军队预研(4010103010401)

摘　　要：阐明了增压式共轨喷射系统的结构组成和工作原理,分析了电控增压器增压室及喷油器压力室内燃油压力振荡的原因和可能带来的不利影响,提出了增加平衡油压电磁阀的方式,使压力室压力在高压喷射后能迅速恢复到轨压并消除压力振荡。建立了新系统的仿真模型,进行了仿真分析,结果证实新系统能在不削弱增压效果的前提下,消除压力振荡。设计了四通电磁阀,将增压活塞电磁阀和平衡压力电磁阀合二为一,实现了改进原理,而不增加系统控制对象(电磁阀)。最后对使用节流孔的方式来改进系统性能的方案作了仿真研究,分析了该方式的优缺点。The configuration and working principle of pressure-intensified common rail injection system were introduced, the reason and influence of pressure oscillation in the plenum chamber of electronic-controlled turbocharger and pressure chamber of injector were analyzed, the way of adding the balancing fuel pressure solenoid valve, which could make the chamber pressure become common rail pressure fast after high-pressure injection, was put forward and finally the simulation model was built. The simulation and analysis of system were carried out. The results showed that the built system could eliminate the pressure oscillation under the premise of keeping original pressure-intensified effects. The four way solenoid valve which has the characteristics of piston solenoid valve and balancing fuel pressure solenoid valve was designed. The valve realized the system improvement without increasing the system control member. Finally, the way to improve system performance with throttle orifice was researched and its merits and faults were discussed.

关 键 词：共轨系统 电控增压器 电子控制 电磁阀 节流孔 

分 类 号：TK423.5[动力工程及工程热物理—动力机械及工程]