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    Fuel injector and method for controlling fuel injectors
    1.
    发明公开
    Fuel injector and method for controlling fuel injectors 有权
    Einspritzventil und Verfahren zur Steuerung von Einspritzventilen

    公开(公告)号：EP2436911A1

    公开(公告)日：2012-04-04

    申请号：EP11189234.5

    申请日：2008-08-07

    Applicant: Delphi Technologies Holding S.à.r.l.

    Inventor： Dingle, Philip

    IPC: F02M61/16 ,  F02M63/00

    CPC classification number: F02M61/168 ,  F02D41/2467 ,  F02D41/3827 ,  F02D41/40 ,  F02D2041/1433 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02M57/005 ,  F02M2200/21 ,  F02M2200/24 ,  F02M2200/247 ,  F02M2200/8092 ,  Y02T10/44

    Abstract: A method of fuel injection, comprising constructing an hydraulic behaviour profile by fuel pressure measurement, using the hydraulic behaviour profile to predict fuel pressure that will prevail in a fuel injector during an injection event, and supplying a control signal to the fuel injector to control the amount of fuel injected during the injection event in accordance with the predicted fuel pressure. By predicting the fuel pressure that will prevail during an injection event, the fuel delivered during the injection event can be accurately controlled.

    Abstract translation: 一种燃料喷射方法，包括通过燃料压力测量来构造液压行为轮廓，使用液压行为轮廓来预测在喷射事件期间在燃料喷射器中将占优势的燃料压力，以及向燃料喷射器提供控制信号以控制 根据预测的燃料压力在喷射事件期间喷射的燃料量。 通过预测在喷射事件期间将占优势的燃料压力，可以准确地控制在喷射事件期间输送的燃料。

    Fuel injector
    2.
    发明公开
    Fuel injector 审中-公开
    喷油器

    公开(公告)号：EP2320061A1

    公开(公告)日：2011-05-11

    申请号：EP09175036.4

    申请日：2009-11-04

    Applicant: Delphi Technologies Holding S.à.r.l.

    Inventor： Dingle, Philip

    IPC: F02M45/12 ,  F02M47/02 ,  F02M63/00

    CPC classification number: F02M47/027 ,  F02M45/12 ,  F02M63/004

    Abstract: A fuel injector (100; 200; 300) for an internal combustion engine is disclosed. The injector includes a slave piston (130; 230; 330) provided with a control bore (144; 244; 344) and associated with a valve needle (110; 210; 310), such that movement of the slave piston causes movement of the valve needle. An end of the slave piston remote from the valve needle is exposed to fuel pressure in a control chamber (152; 252; 352) of the injector, in use. A control piston (148; 348) is operable to move relative to the slave piston so as to control fuel flow through first and second control ports that connect the control bore to a high-pressure fuel supply and a low-pressure drain respectively. By suitable positioning of the control piston, the valve needle can be biased in an opening direction and in a closing direction and, optionally, the valve needle can be held in one or more intermediate positions between its fully-lifted and fully-seated positions. Proportional control of the position and velocity of the valve needle is possible, and a low-force actuator can be used to control the valve needle.

    Abstract translation: 公开了一种用于内燃机的燃料喷射器（100; 200; 300）。 该喷射器包括设置有控制孔（144; 244; 344）并与阀针（110; 210; 310）相关联的从动活塞（130; 230; 330），使得从动活塞的运动引起 阀针。 从动活塞的远离阀针的一端在使用中暴露于喷射器的控制室（152; 252; 352）中的燃料压力。 控制活塞（148; 348）可操作以相对于从动活塞移动，以便控制通过将控制孔分别连接到高压燃料供应装置和低压排放装置的第一控制端口和第二控制端口的燃料流量。 通过控制活塞的适当定位，阀针可以沿打开方向和关闭方向偏置，并且可选地，阀针可以保持在其完全升高位置和完全固定位置之间的一个或多个中间位置。 可以对阀针的位置和速度进行比例控制，并且可以使用低力致动器来控制阀针。

    Method of dosing reagent
    6.
    发明公开
    Method of dosing reagent 有权
    Verfahren zur Dosierung der Reagenz

    公开(公告)号：EP2295747A1

    公开(公告)日：2011-03-16

    申请号：EP10187322.2

    申请日：2009-05-22

    Applicant: Delphi Technologies Holding S.à.r.l.

    Inventor： Dingle, Philip ,  Hardy, Martin ,  Zuelch, Roman

    IPC: F01N3/035 ,  F01N3/20 ,  F01N9/00 ,  F01N11/00 ,  F01N3/021 ,  F01N3/08 ,  F01N13/04

    CPC classification number: F01N3/208 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/106 ,  F01N11/00 ,  F01N13/009 ,  F01N13/011 ,  F01N2240/25 ,  F01N2240/36 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2260/024 ,  F01N2410/04 ,  F01N2410/12 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/1413 ,  F01N2610/1433 ,  F01N2610/146 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1814 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A method of dosing a reagent into an exhaust gas stream of an internal combustion engine (3) having an SCR catalyst, the method comprising injecting reagent from a reagent tank (20) into the exhaust gas stream at a position upstream of the SCR catalyst using a reagent injector (40) in accordance with a first dosing schedule in order to remediate a predetermined proportion of NOx in the exhaust gas stream, the first dosing schedule being associated with a first range of engine operating conditions; and injecting reagent from the reagent tank (20) into the exhaust gas stream at a position upstream of the SCR catalyst using a reagent injector (40) in accordance with a second dosing schedule in order to enable heat transfer between the reagent injector (40) and said injected reagent, the second dosing schedule being associated with a second range of engine operating conditions.
    Dosing in accordance with said first or said second dosing schedule is carried out in dependence on whether engine operating conditions lie within said first or said second range of engine operating conditions, and the proportion of NOx in the exhaust gas stream which is remediated by dosing using said second dosing schedule is less than said predetermined portion. The method further comprises sensing the level of reagent in the reagent tank (20); and halting the first dosing schedule when the sensed level of reagent drops below a predetermined level.

    Abstract translation: 一种将试剂投入到具有SCR催化剂的内燃机（3）的排气流中的方法，该方法包括将试剂罐（20）中的试剂从SCR催化剂上游位置的排气流中注入，使用 根据第一给药方案的试剂注射器（40），以便修复废气流中的预定比例的NOx，第一给药方案与第一范围的发动机操作条件相关联; 以及根据第二给药方案，使用试剂注射器（40）在所述SCR催化剂上游的位置将试剂从所述试剂罐（20）注入所述排气流中，以使得所述试剂注入器（40） 和所述注射试剂，所述第二给药方案与第二范围的发动机操作条件相关联。 根据所述第一或第二给料计划的剂量是根据发动机操作条件是否在发动机操作条件的所述第一或所述第二范围内以及排气流中的NOx的比例通过配量使用 所述第二给药方案小于所述预定部分。 该方法还包括感测试剂罐（20）中的试剂的水平; 并且当感测到的试剂水平低于预定水平时停止第一给药方案。

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