公开(公告)号：US5040727A

公开(公告)日：1991-08-20

申请号：US554465

申请日：1990-07-19

申请人： George L. Muntean ,  Gary L. Gant ,  C. Edward Morris, Jr. ,  David Bolis ,  Kevin L. Vogt ,  David E. Shultz

发明人： George L. Muntean ,  Gary L. Gant ,  C. Edward Morris, Jr. ,  David Bolis ,  Kevin L. Vogt ,  David E. Shultz

IPC分类号： F02M57/02

CPC分类号： F02M57/021

摘要： A unit fuel injector is disclosed to be used in a fuel injection system of an internal combustion engine wherein each unit injector is operated independently from one another and in synchronization with the internal combustion engine. Specifically, the unit injector in accordance with the present invention includes a reciprocating plunger assembly within the unit injector that controls fuel metering as well as fuel injection, and a valve device positioned between a minor diameter plunger section and a cup of the unit injector so as to permit fuel flow in one direction for fuel injection and to restrict flow of gases in the opposite direction. The valve device effectively reduces carbon build-up on the injector surfaces and increases injector longevity while reducing maintenance. Moreover, fuel metering is accurately controlled without substantial carboning flow losses.

摘要翻译： 公开了用于内燃机的燃料喷射系统中的单元燃料喷射器，其中每个单元喷射器彼此独立地并且与内燃机同步地操作。 具体而言，根据本发明的单元喷射器包括在单元喷射器内的往复式柱塞组件，其控制燃料计量以及燃料喷射，以及定位在小直径柱塞部分和单元喷射器杯之间的阀装置，以便 以允许燃料在一个方向上的流动用于燃料喷射并且限制气体沿相反方向的流动。 阀装置有效地减少了喷射器表面的碳积累并且在减少维护的同时增加了喷射器寿命。 此外，燃料计量被精确地控制，而没有实质的碳化流动损失。