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。

公开(公告)号：US20150211459A1

公开(公告)日：2015-07-30

申请号：US14425939

申请日：2013-07-23

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

Inventor： Andrew Male ,  Anthony Thomas Harcombe

IPC: F02M59/02 ,  F04B19/22 ,  F04B7/02

Abstract: The present application relates to a pump unit for a fuel injection system. The pump unit has a low pressure fuel supply line and a high pressure fuel outlet. A pumping chamber having a plunger is operable to perform a pumping cycle comprising a pumping stroke and a filling stroke. The pump unit also includes an inlet valve having an inlet valve member movable between an open position for permitting the supply of fuel to the pumping chamber from the low pressure fuel supply line and a closed position for inhibiting the supply of fuel from the pumping chamber to the low pressure supply line. An outlet valve is provided in the high pressure fuel outlet. The pump unit also includes a means for latching the inlet valve member in its open position. The present application also relates to a method of operating a pump unit.

Abstract translation: 本申请涉及一种用于燃料喷射系统的泵单元。 泵单元具有低压燃料供应管线和高压燃料出口。 具有柱塞的泵送室可操作以执行包括泵送冲程和填充冲程的泵送循环。 泵单元还包括入口阀，入口阀构件可在允许从低压燃料供应管线向泵送室供应燃料的打开位置和用于禁止从泵送室供应燃料的关闭位置之间移动的入口阀构件 低压供应线。 出口阀设置在高压燃料出口中。 泵单元还包括用于将入口阀构件锁定在其打开位置的装置。 本申请还涉及一种操作泵单元的方法。