CONTROL VALVE FOR A FUEL INJECTOR

专利名称：CONTROL VALVE FOR A FUEL INJECTOR发明人：KRAUSE, MICHAEL,OLEMS, LARS,NIERYCHLO,

THOMAS

申请号：EP14724771.2申请日：20140520公开号：EP3025048A1公开日：20160601

摘要：The invention relates to a control valve (10) for a fuel injector (100) for internalcombustion engines, which control valve comprises a valve piece (11), which has a valveseat (12) and a valve closing armature (20), which interacts with the valve seat (12) and canbe moved in a reciprocating manner. A discharge bore (30) having a circular cross-sectionis formed in the valve piece (11). The discharge bore comprises a first region having adiameter d1, which first region serves as a throttle (31), a second region, which serves as adiffuser (32), and a third region having a diameter d3, which third region serves as afollowing flow geometry (33). The second region has at least one segment having adiameter d2, and the following applies: d1 < d2 < d3. The third region B3 serving as afollowing flow geometry (33) has a length l3, wherein the following applies to the ratiol3/d3: 2 < l3/d3 < 4, l3/d3 preferably being approximately equal to 2.5.

申请人：ROBERT BOSCH GMBH

地址：Postfach 30 02 20 70442 Stuttgart DE

国籍：DE

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