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公开(公告)号：US20140353537A1
公开(公告)日：2014-12-04
申请号：US14373656
申请日：2013-01-24
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。
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公开(公告)号：US09714633B2
公开(公告)日：2017-07-25
申请号：US14373656
申请日：2013-01-24
Inventor： Richard Denis Jacques Alain Enters , David Bonneau , Thierry Thibault , Jean-Christophe Oge , Philippe Legrand
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.
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公开(公告)号：US20190301412A1
公开(公告)日：2019-10-03
申请号：US15739174
申请日：2016-06-08
Inventor： Jean-Christophe Oge , Jorge Martinez
Abstract: A nozzle assembly of a fuel injector includes a nozzle body in which a needle member is adapted to translate. The nozzle assembly is further provided with an electrical circuit so that an electrical signal enabling contact detection is measurable between the needle member and the nozzle body. The nozzle assembly also includes a piezoresistive device which continuously varies the electrical signal during the final closing displacements, or the initial opening displacements, of the needle, the variations of the signal being a function of a differential pressure.
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公开(公告)号：US20170089312A1
公开(公告)日：2017-03-30
申请号：US15310484
申请日：2015-04-21
Inventor： Philippe Legrand , Jean-Christophe Oge
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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