公开(公告)号：US5758829A

公开(公告)日：1998-06-02

申请号：US555623

申请日：1995-11-09

申请人： Katsuoki Itoh ,  Christoph Treutler ,  Guenter Lewentz ,  Bernd Dittus ,  Gilbert Moersch ,  Christoph Franke ,  Reiner Schuetz ,  Hans-Friedemann Kober

发明人： Katsuoki Itoh ,  Christoph Treutler ,  Guenter Lewentz ,  Bernd Dittus ,  Gilbert Moersch ,  Christoph Franke ,  Reiner Schuetz ,  Hans-Friedemann Kober

IPC分类号： F02M61/04 ,  F02M61/08 ,  F02M61/18 ,  F02M59/00

CPC分类号： F02M61/18 ,  F02M61/045 ,  F02M61/08 ,  Y10T137/86517

摘要： A fuel injection valve for internal combustion engines with a valve member which is displaced in a bore in a valve body by the fuel pressure, counter to the action of a closing spring. The valve body has at a combustion-space end, a valve head which on a side which faces the valve body is arranged a sealing surface which interacts with a valve seat provided on the combustion-space end of the valve body, forming a sealing cross section, and including injection apertures which permit a flow of fuel from a pressure space in the valve body to the combustion space of the internal combustion engines and has an aperture cross section which can be varied as a function of the stroke of the valve member. According to the invention, those parts which seal off the injection valve from the outside and those parts which form the aperture cross section of the injection openings are geometrically separated from one another, the sealing cross section which closes the valve off from the outside being arranged downstream, as seen in the injection direction, of the variable aperture cross section, which is situated radially to the inside.

摘要翻译： 一种用于内燃机的燃料喷射阀，其具有阀构件，该阀构件与闭合弹簧的作用相反，通过燃料压力在阀体的孔中移位。 阀体具有燃烧空间端，在与阀体相对的一侧上设置有与设置在阀体的燃烧空间端上的阀座相互作用的密封表面的阀头，形成密封十字 并且包括允许燃料从阀体中的压力空间流到内燃机的燃烧空间的喷射孔，并且具有可以作为阀构件的行程的函数而变化的孔径横截面。 根据本发明，将喷射阀从外部密封的那些部件和形成喷射孔的孔径横截面的那些部件在几何上彼此分离，从外部关闭阀的密封截面被布置 在径向到内侧的可变孔径横截面的下游，如在喷射方向上所看到的那样。

公开(公告)号：US5697554A

公开(公告)日：1997-12-16

申请号：US581959

申请日：1996-01-02

申请人： Gerhard Auwaerter ,  Katsuoki Itoh ,  Rudolf Heinz ,  Winfried Moser ,  Christoph Franke

发明人： Gerhard Auwaerter ,  Katsuoki Itoh ,  Rudolf Heinz ,  Winfried Moser ,  Christoph Franke

IPC分类号： F16K31/02 ,  F02M21/02 ,  F02M51/06 ,  F02M61/08 ,  F02M61/16 ,  F02M63/00 ,  H01L41/09

CPC分类号： F02M61/167 ,  F02M21/0254 ,  F02M21/0263 ,  F02M21/0269 ,  F02M51/0603 ,  F02M61/08 ,  F02M61/163 ,  F02M2200/704 ,  F02M2200/705 ,  Y02T10/32

摘要： A metering valve for metering a fluid for a fuel injection valve for internal combustion engines, with a hydraulic displacement amplifier for converting the actuating displacement of a piezoelectric actuator into an increased stroke of the valve needle. Integrating the displacement amplifier spatially into the valve housing in an "O valve" to give a small overall volume is served by providing the lifting piston of the displacement amplifier with an end section of reduced diameter which projects into a recess in the operation piston of the displacement amplifier. A Belleville spring lying in the amplifier chamber bounded by the pistons presses the operating piston against the actuator, and a helical compression spring arranged in the recess concentrically to the end section presses the lifting piston against the valve needle.

摘要翻译： 一种用于计量用于内燃机的燃料喷射阀的流体的计量阀，具有用于将压电致动器的致动位移转换为阀针的增加行程的液压位移放大器。 通过使位移放大器的提升活塞具有减小的直径的端部部分，该端部突出到操作活塞中的凹部中，将位移放大器空间上集成到阀壳体中以产生小的总体积 位移放大器。 位于由活塞限定的放大器室中的Belleville弹簧将操作活塞压靠在致动器上，并且布置在与凹部同心的凹部中的螺旋压缩弹簧将提升活塞压靠在阀针上。