公开(公告)号：US07021569B1

公开(公告)日：2006-04-04

申请号：US09763972

申请日：2000-01-26

申请人： Kiyotaka Ogura ,  Atsushi Sekine ,  Eiichi Kubota ,  Masafumi Nakano ,  Keiichi Uraki ,  Noriyuki Maekawa ,  Mizuho Yokoyama ,  Yoshiyuki Tanabe ,  Hiromasa Kubo ,  Tooru Ishikawa

发明人： Kiyotaka Ogura ,  Atsushi Sekine ,  Eiichi Kubota ,  Masafumi Nakano ,  Keiichi Uraki ,  Noriyuki Maekawa ,  Mizuho Yokoyama ,  Yoshiyuki Tanabe ,  Hiromasa Kubo ,  Tooru Ishikawa

IPC分类号： B05B1/30 ,  F02M59/00 ,  F02M61/10

CPC分类号： F02M61/168 ,  F02M51/0671 ,  F02M61/12 ,  F02M61/162 ,  F02M2200/306 ,  F02M2200/8061

摘要： A fuel swirler positioned upstream of an injection orifice is disposed at the tip of a nozzle body in a fuel injector, in which the fixed core and the nozzle body are coupled to each other via a non-magnetic cylindrical seal ring press-fitted and welded to the outer circumference of one end on the nozzle body side of the fixed core and the inner circumference of one end of the nozzle body. The inner circumference of the fuel swirler and the inner circumference of the seal ring function serve as a guide for slidably guiding a stroke movement of the needle. The fuel swirler is held between the receiving surface of the nozzle body and the orifice plate, thus defining an annular fuel passage between the outer circumference of the fuel swirler and the inner circumference of the nozzle body, so that fuel flows into a passage groove formed at the lower end surface of the fuel swirler via the annular fuel passage. A mass movable in an axial direction independently of the needle is interposed between the return spring and the needle, and a plate spring is interposed between the mass and the needle.

摘要翻译： 位于喷射孔上游的燃料旋流器设置在燃料喷射器中的喷嘴体的顶端处，其中固定芯体和喷嘴体通过非磁性圆柱形密封环相互联接，压紧和焊接 到固定芯的喷嘴体侧的一端的外周和喷嘴体的一端的内周。 燃料旋流器的内周和密封环功能的内周作为用于可滑动地引导针的行程运动的引导件。 燃料旋流器保持在喷嘴体的接收表面和孔板之间，从而在燃料旋流器的外周和喷嘴体的内周之间限定一个环形燃料通道，使得燃料流入形成的通道槽 在燃料旋流器的下端表面经由环形燃料通道。 独立于针的轴向可移动的质量体位于复位弹簧和针之间，并且在弹簧和针之间插入板簧。

公开(公告)号：US4811905A

公开(公告)日：1989-03-14

申请号：US56945

申请日：1987-06-03

申请人： Tooru Ishikawa ,  Tokuo Kosuge

发明人： Tooru Ishikawa ,  Tokuo Kosuge

IPC分类号： F02M51/06 ,  F02M51/08 ,  F02M55/04 ,  F02M61/16 ,  F02M63/00 ,  F02M69/46 ,  F02M51/00

CPC分类号： F02M69/462 ,  F02M51/0678 ,  F02M55/04 ,  F02M2200/315 ,  F02M61/165 ,  Y10S239/23

摘要： An electromagnetic fuel injector for internal combustion engines has a core defining therein a central bore and a fuel adjuster disposed therein and having an upstream end spaced downstream from an inlet end of the core. The central bore includes an inlet portion extending between the inlet end of the core and the upstream end of the fuel adjuster and providing an inner peripheral surface operative to guide the fuel in a laminar flow toward and into the fuel adjuster for thereby minimizing the occurrence of pulsated fuel pressure variation and voids which took place heretofore to cause cavitation in the fuel passage in the injector, whereby the range of fuel injection control can be widened.

摘要翻译： 用于内燃机的电磁燃料喷射器具有在其中限定有中心孔的核和设置在其中的燃料调节器，并且具有在芯的入口端的下游间隔开的上游端。 中心孔包括在芯的入口端和燃料调节器的上游端之间延伸的入口部分，并且提供内周表面，该内周表面可操作以将燃料沿层流引导到燃料调节器中，从而最小化燃料调节器的发生 脉动的燃料压力变化和空气在此之前发生在喷射器中的燃料通道中引起气蚀，从而可以扩大燃料喷射控制的范围。