公开(公告)号：US20180045153A1

公开(公告)日：2018-02-15

申请号：US15724587

申请日：2017-10-04

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

Inventor： Anthony Thomas Harcombe ,  George A. Meek

IPC: F02M47/02 ,  F02D41/38

CPC classification number: F02M47/027 ,  F02D41/38 ,  F02D41/3827 ,  F02M63/0017 ,  F02M63/0063

Abstract: A fuel injector includes a nozzle having at least one nozzle outlet. A valve needle is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through the at least one nozzle outlet. The movement of the nozzle needle is controlled by fuel pressure within a control chamber. The injector has first and second nozzle control valves for controlling fuel flow into and out of the control chamber to pressurise and depressurise the control chamber, respectively. The first nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain or to place the control chamber in fluid communication with a high pressure supply line. The second nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain.

公开(公告)号：US20150167609A1

公开(公告)日：2015-06-18

申请号：US14404080

申请日：2013-05-07

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

Inventor： Anthony Thomas Harcombe ,  George A. Meek

IPC: F02M61/04 ,  F02M47/06

CPC classification number: F02M61/042 ,  F02M47/027 ,  F02M47/06

Abstract: A fuel injector includes a nozzle having at least one nozzle outlet. A valve needle is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through the at least one nozzle outlet. The movement of the nozzle needle is controlled by fuel pressure within a control chamber. The injector has first and second nozzle control valves for controlling fuel flow into and out of the control chamber to pressurise and depressurise the control chamber, respectively. The first nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain or to place the control chamber in fluid communication with a high pressure supply line. The second nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain.

Abstract translation: 燃料喷射器包括具有至少一个喷嘴出口的喷嘴。 阀针可相对于阀针运动，该阀针位于关闭位置和打开位置之间的运动范围内，以控制通过至少一个喷嘴出口的燃料输送。 喷嘴针的移动由控制室内的燃料压力控制。 喷射器具有第一和第二喷嘴控制阀，用于控制进入和离开控制室的燃料流量，以分别对控制室进行加压和减压。 第一喷嘴控制阀可以选择性地操作以使控制室与燃油排放器流体连通，或者使控制室与高压供应管路流体连通。 第二喷嘴控制阀可以选择性地操作以使控制室与燃油排放流体连通。