公开(公告)号：WO2015010995A1

公开(公告)日：2015-01-29

申请号：PCT/EP2014/065267

申请日：2014-07-16

Applicant: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.À R.L.

Inventor： THIBAULT, Thierry ,  LESIEUR, Cyrille ,  DRATCH, Rodolphe

IPC: F02M51/06 ,  F02M47/02

CPC classification number: F02M47/027 ,  F02M51/0639 ,  F02M51/0667

Abstract: A fuel injector (100) for use in an internal combustion engine, the fuel injector comprising: an injector body (10) comprising a bore (11); an injector needle (12) located within the bore and engageable with a needle seat to control fuel injection through an injector outlet (15); an armature member (106), the armature member being engageable with an armature seat (105) on the injector needle (12), the injector needle (12) in part and the armature member (106) in part defining a control chamber (104); an actuator arrangement (44) arranged to control fuel pressure within the control chamber (104) such that fuel pressure variations within the control chamber controls movement of the injector needle relative to the needle seat wherein the actuator arrangement (44) is arranged to be capable of moving the armature member (106) from a seated position in which it engages the armature seat (105) to an unseated position in which the armature member (106) has moved relative to the armature seat in order to bring the control chamber (104) into fluid communication with a low pressure drain (118).

Abstract translation: 一种用于内燃机的燃料喷射器（100），所述燃料喷射器包括：喷射器主体（10），包括孔（11）; 位于孔内并与针座接合以便通过喷射器出口（15）控制燃料喷射的注射器针头（12）; 电枢构件（106），所述衔铁构件可与所述注射器针头（12）上的衔铁座（105）接合，所述注射器针部分部分地和所述衔铁构件（106）部分地限定控制室（104） ）; 致动器装置（44），其布置成控制所述控制室（104）内的燃料压力，使得所述控制室内的燃料压力变化控制所述喷射器针相对于所述针座的运动，其中所述致动器装置（44）被布置成能够 使电枢构件（106）从其与电枢座（105）接合的就座位置移动到电枢构件（106）相对于电枢座移动的非转动位置，以使控制室（104） ）与低压排水（118）流体连通。