公开(公告)号：US5076236A

公开(公告)日：1991-12-31

申请号：US495121

申请日：1990-03-19

申请人： Robert Yu ,  Julius P. Perr

发明人： Robert Yu ,  Julius P. Perr

IPC分类号： F02M57/02

CPC分类号： F02M57/021

摘要： A pressure-responsive spring-biased cutoff valve for an open nozzle unit fuel injector in an internal combustion engine is provided allowing for the selective operation of a given number of cylinders during an engine low load or idling speed condition for improved white smoke control. The fuel injector of the present invention includes an injector body having a central bore with a reciprocating injector plunger positioned therein to form an injection chamber. The injection chamber is supplied with fuel from a supply passage through a metering orifice with the fuel cutoff valve located in the supply passage upstream of and adjacent to the metering orifice and in close proximity to the injection chamber for a substantial reduction in the entry of combustion gases and other unwanted substances into the fuel supply.

摘要翻译： 提供一种用于内燃机中的开口喷嘴单元燃料喷射器的压力响应弹簧偏压截止阀，允许在用于改善白烟控制的发动机低负载或空转速度条件期间选择性地操作给定数量的气缸。 本发明的燃料喷射器包括具有中心孔的喷射器主体，其中定位有往复式喷射器柱塞以形成喷射室。 注射室从供应通道经过计量孔口供给燃料，燃料切断阀位于供给通道的上游并与计量孔口相邻并且靠近注射室，用于显着减少燃烧进入 气体和其他不需要的物质进入燃料供应。