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。