公开(公告)号：US20150136879A1

公开(公告)日：2015-05-21

申请号：US14405722

申请日：2013-04-05

Applicant: Robert Bosch GmbH

Inventor： Jochen Rager ,  Andreas Buergel ,  Joachim Fleuren ,  Bernd Reinsch ,  Johannes Schmid ,  Dieter Maier ,  Helmut Sattmann ,  David Holzer ,  Andreas Stimmeder ,  Dieter Deutsch

IPC: F02M51/06

CPC classification number: F02M51/0614 ,  F02M61/12 ,  F02M61/166 ,  F02M61/168 ,  F02M63/0017 ,  F02M63/0019 ,  F02M63/0022 ,  F02M63/022 ,  F02M2200/08 ,  F02M2200/8046 ,  F02M2200/9007 ,  F02M2200/9069 ,  F02M2200/9076

Abstract: The invention relates to a fuel injector having an electromagnet 2 which contains a magnet core 6 and a coil 7 and which further has an armature 9 that is guided on an armature pin 8. The armature pin 8 is guided in a guide sleeve 11 which projects into the electromagnet 2. The fuel injector further has an injector body 4 with at least one injection opening which is introduced into the injector body 4 and which is controlled by an injector needle 5. The aim of the invention is to provide a fuel injector which is functionally improved with respect to the switching times of the fuel injector and the forces that can be generated in the fuel injector while simultaneously simplifying a guide sleeve for an armature pin. This is achieved in that the guide sleeve 11 is integrated into the magnet core 6 and is connected to the magnet core 6 in a formfitting or bonded manner. For this purpose, the guide sleeve 11 has widened sections 16 at both ends, said widened sections fixing the guide sleeve 11 in the magnet core 6.

Abstract translation: 本发明涉及一种具有电磁体2的燃料喷射器，该电磁铁2包含一个磁芯6和一个线圈7，并且还具有一个在电枢销8上被引导的电枢9。电枢销8被引导到导向套筒11中， 燃料喷射器还具有喷射器主体4，其具有至少一个喷射开口，其被引入喷射器主体4中，并且由喷射器针5控制。本发明的目的是提供一种燃料喷射器， 相对于燃料喷射器的切换时间和能够在燃料喷射器中产生的力而在功能上得到改善，同时简化用于电枢销的导向套筒。 这是通过将引导套筒11集成到磁芯6中，并且以形状或接合的方式连接到磁芯6。 为此，引导套筒11在两端具有加宽部分16，所述加宽部分将引导套筒11固定在磁芯6中。