发明申请
- 专利标题: VALVE FOR METERING FLUID
- 专利标题(中): 用于测量流体的阀
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申请号: US15036683申请日: 2014-11-11
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公开(公告)号: US20160293311A1公开(公告)日: 2016-10-06
- 发明人: Stefan Cerny , Ralf Kromer
- 申请人: ROBERT BOSCH GMBH
- 优先权: DE102013223458.9 20131118
- 国际申请: PCT/EP2014/074224 WO 20141111
- 主分类号: H01F7/16
- IPC分类号: H01F7/16 ; F01N3/20 ; F02M61/10 ; F16K31/06 ; F16K1/14
摘要:
A valve for metering fluid has an electromagnet for actuating a valve needle controlling a metering opening. The electromagnet generates, upon current flow, a magnetic flux that proceeds via an outer pole, a hollow-cylindrical inner pole, an armature displaceable on an armature guidance region embodied on the valve needle, and a working air gap delimited by the armature and inner pole. Disposed fixedly on the valve needle is an entraining element that penetrates axially displaceably into an entraining element guidance region embodied in the inner pole and has a radial stop shoulder for the armature which delimits a take-up travel or pre-stroke travel. The entraining element is extended into an additional inner pole having a pole surface formed by the stop shoulder, and is embodied magnetically conductively and a magnetic flux between the armature and valve needle is suppressed by way of a magnetically nonconductive material.
公开/授权文献
- US10242785B2 Valve for metering fluid 公开/授权日:2019-03-26
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