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    Fuel injector
    1.
    发明授权
    Fuel injector 有权

    公开(公告)号：US09726126B2

    公开(公告)日：2017-08-08

    申请号：US15036350

    申请日：2014-11-04

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

    Inventor： Christophe Moreau ,  Thierry Thibault ,  Thierry Cochet ,  Jean Luc Beduneau ,  Philippe Legrand

    IPC: F02M51/06 ,  F02M57/00 ,  G01D5/16 ,  G01D5/165 ,  F02M61/20

    CPC classification number: F02M51/0653 ,  F02M57/005 ,  F02M61/20 ,  F02M2200/245 ,  G01D5/1655

    Abstract: A fuel injector includes fixed metal components, in particular an injector body, a solenoid actuator equipped with a retaining spring that holds a control valve stem, a control valve body including a seat for the control valve stem, a spacer between the body of the control valve and an injection nozzle, a control chamber, and an injection needle seat. The fuel injector also includes movable metal components, in particular the control valve stem and an armature thereof and an injection needle. Surfaces of the metal components that are in contact with one another are contact surfaces. Resistive surface coatings are arranged on a number of the contact surfaces. The overall electrical resistivity of the injector between the body of the solenoid actuator and the body of the injector varies by at least three distinct ohm values intermittently according to the kinetics of the injection needle of the injector.

    CONTROL VALVE ASSEMBLY
    4.
    发明申请
    CONTROL VALVE ASSEMBLY 审中-公开

    公开(公告)号：US20170328319A1

    公开(公告)日：2017-11-16

    申请号：US15533167

    申请日：2015-10-29

    Applicant: Delphi International Operations Luxembourg, S.A.R.L.

    Inventor： Philippe Legrand

    IPC: F02M47/02 ,  F02M63/00

    CPC classification number: F02M47/027 ,  F02M63/0071 ,  F02M63/0078 ,  F02M2200/16

    Abstract: A subassembly for a high pressure fuel injector control valve includes, a control valve member and a sleeve attached to a stem of the control valve member, the sleeve extending along at least a partial axial length of the stem of the control valve member, and wherein a clearance, provided between the sleeve and the control valve member, is in fluid communication with the control chamber such that during use, pressure compensation occurs, as the sleeve is caused to expand and seal against the control valve bore, thereby preventing leakage of fuel within the control valve assembly.

    CONTROL VALVE
    5.
    发明申请
    CONTROL VALVE 有权
    控制阀

    公开(公告)号：US20140353537A1

    公开(公告)日：2014-12-04

    申请号：US14373656

    申请日：2013-01-24

    Applicant: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG, S.A.R.L.

    Inventor： Richard Denis Jacques Alain Enters ,  David Bonneau ,  Thierry Thibault ,  Jean-Christophe Oge ,  Philippe Legrand

    IPC: F02M61/04

    CPC classification number: F02M61/042 ,  F02M47/027 ,  F02M61/12 ,  F02M61/167 ,  F02M63/0015 ,  F02M63/0033 ,  F02M63/0071 ,  F02M63/0078 ,  F02M2200/16

    Abstract: The present invention relates to a control valve for a fuel injector. The control valve has a control valve body which defines a supply passage for high pressure fuel. A control chamber and a pressure compensating chamber are provided in the control valve. The control chamber and the pressure compensating chamber are both in fluid communication with the supply passage. A control valve member is provided for controlling fuel pressure in the control chamber. The pressure compensating chamber is spaced radially outwardly from the control chamber. The invention also relates to a control valve member having a pressure compensating cavity.

    Abstract translation: 本发明涉及一种用于燃料喷射器的控制阀。 控制阀具有限定用于高压燃料的供给通道的控制阀体。 控制室和压力补偿室设置在控制阀中。 控制室和压力补偿室都与供给通道流体连通。 提供控制阀构件用于控制控制室中的燃料压力。 压力补偿室从控制室径向向外隔开。 本发明还涉及具有压力补偿腔的控制阀构件。

    Fuel Injector
    6.
    发明申请
    Fuel Injector 审中-公开

    公开(公告)号：US20170089312A1

    公开(公告)日：2017-03-30

    申请号：US15310484

    申请日：2015-04-21

    Applicant: Delphi International Operations Luxembourg S.A.R.L.

    Inventor： Philippe Legrand ,  Jean-Christophe Oge

    IPC: F02M61/12 ,  F02M61/16 ,  F02M61/20

    CPC classification number: F02M61/12 ,  F02M47/02 ,  F02M61/165 ,  F02M61/205 ,  F02M2200/27 ,  F02M2200/28

    Abstract: A nozzle assembly of a fuel injector extends along a main axis and includes a nozzle body provided with an inner space divided in upstream chamber and downstream chamber and also with, a valve needle including a main elongated shaft slidably guided in said inner space and extending through-out both upstream and downstream chambers. The nozzle body and the valve needle cooperate to define throttle fluid communication means between upstream and downstream chambers inducing, in use, a pressure drop when fuel flows through. The nozzle assembly is further provided with a tubular sleeve arranged between the upstream chamber and the downstream chamber in abutment against a face of the body and being radially self-centred guided by a cylindrical face of the needle, the throttle means being arranged in said sleeve.

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