METHOD AT FUEL INJECTION
    4.
    发明公开
    METHOD AT FUEL INJECTION 审中-公开
    VERFAHREN ZUR KRAFTSTOFFEINSPRITZUNG

    公开(公告)号:EP3019737A4

    公开(公告)日:2017-03-22

    申请号:EP14823640

    申请日:2014-06-10

    申请人: SCANIA CV AB

    发明人: BJUREFORS DANIEL

    摘要: A method is disclosed to determine the opening degree of injectors in cylinders of a combustion engine, where the combustion engine has at least three cylinders. The injectors are connected to a fuel accumulator in a common rail fuel injection system; the fuel supply to the fuel accumulator is interrupted; and subsequently a test injection of fuel is carried out into at least two and, at most, all but for one cylinder at a time, in different combinations, at such a time that the injection does not cause any combustion in the cylinders. The pressure decreases caused in connection with the different test injections are measured, and the pressure decrease that is attributable to at least one specific injector is calculated based thereupon, which is, in turn, used in the determination of the injector's opening degree.

    摘要翻译: 公开了一种用于确定具有至少三个气缸的内燃机中的气缸中的喷射器的开度的方法,其中喷射器连接到共轨燃料喷射系统中的燃料蓄积器,燃料蓄积器的燃料供应被中断, 并且随后在喷射不引起气缸中的任何燃烧的时候,以不同的组合,一次一个气缸一次进行至少两个,至多全部燃料的测试喷射。 测量与不同试验注射相关的压力降低,并且由此确定可归因于至少一个特定注射器的压力降低,其用于确定喷射器的开度。

    Procédé d'estimation de la température des gaz d'échappement
    7.
    发明公开
    Procédé d'estimation de la température des gaz d'échappement 有权
    Verfahren zurSchätzungder Abgastemperatur

    公开(公告)号:EP2765290A1

    公开(公告)日:2014-08-13

    申请号:EP14153382.8

    申请日:2014-01-31

    IPC分类号: F02D41/02

    摘要: L'invention concerne un procédé d'estimation de la température (T3) des gaz d'échappement produits par un moteur à combustion interne comprenant une chambre de combustion dans laquelle est injectée une quantité totale de carburant, le procédé comprenant les étapes de :
    - détermination (21) de la température d'admission (T2) des gaz entrant dans la chambre de combustion,
    - détermination (20) de la quantité totale de carburant injectée dans la chambre de combustion,
    - estimation (22) de la température des gaz d'échappement à partir de la température d'admission (T2) et de la quantité totale de carburant injectée,

    caractérisé en ce que la température (T3) des gaz d'échappement est estimée à partir d'une relation logarithmique entre le ratio de la température (T3) des gaz d'échappement par la température d'admission (T2) et la quantité totale de carburant injectée.

    摘要翻译: 该方法包括确定进入燃烧室(21)的废气的入口温度(T2),以及确定喷射到燃烧室(20)中的燃料总量。 从入口温度和喷射燃料的总量估计排气的温度(T 2),其中根据排气温度之间的关系对数曲线来估计废气的温度 通过入口温度和喷射燃料的总量。 还包括以下独立权利要求:(1)用于估计由内燃机(2)车辆产生的废气的温度的估计器。

    Method for controlling an internal combustion engine
    9.
    发明公开
    Method for controlling an internal combustion engine 审中-公开
    用于控制内燃机的方法

    公开(公告)号:EP2420664A1

    公开(公告)日:2012-02-22

    申请号:EP10173579.3

    申请日:2010-08-20

    IPC分类号: F02D41/24

    摘要: A method of operating an internal combustion engine with a direct injection system controlled by an engine control unit (ECU) is described. The ECU comprises a flow curve table storing data indicative of fuel quantities vs. injector pulse widths. The method comprises an injector learning event during which actual fuel values related to a fuel injector are determined, said injector learning event being enabled during an idle or deceleration condition of said engine and comprising the steps of:
    operating the engine into a homogeneous combustion mode; and
    concurrently degrading the combustion and/or splitting the injection pulses while monitoring the combustion performance to determine learned fuel data.

    摘要翻译: 描述了一种利用由发动机控制单元(ECU)控制的直接喷射系统来操作内燃机的方法。 ECU包括存储表示燃料量与喷射器脉冲宽度的数据的流量曲线表。 该方法包括喷射器学习事件,在该事件期间确定与燃料喷射器相关的实际燃料值,所述喷射器学习事件在所述发动机的怠速或减速条件期间被启用,并且包括以下步骤:使发动机进入均质燃烧模式; 同时降低燃烧和/或分解喷射脉冲,同时监测燃烧性能以确定学习的燃料数据。

    Fuel injection device
    10.
    发明公开
    Fuel injection device 有权
    燃油喷射装置

    公开(公告)号:EP2138694A1

    公开(公告)日:2009-12-30

    申请号:EP09163827.0

    申请日:2009-06-25

    IPC分类号: F02D41/38 F02M63/02

    摘要: A fuel injection device 1A which includes a common rail 4 for accumulating fuel delivered by a high pressure pump 3B in a pressure-accumulated state, an injector for injecting in a cylinder of the diesel engine fuel supplied through a high pressure fuel supply passage 21 branched from the common rail 4, and an ECU 80A for outputting an injection command signal for injecting the fuel from the injector 5A. The fuel injection device 1A further includes an orifice 75 in the high pressure fuel supply passage 21 on the side of the common rail 4, and a differential pressure sensor S dP for detecting the pressure difference of the pressures on the upstream and downstream sides of the orifice 75. The ECU 80A calculates an actual fuel supply amount that passes the orifice 75 based on a signal from the differential pressure sensor S dP .

    摘要翻译: 本发明提供一种燃料喷射装置1A,该燃料喷射装置1A具备:用于蓄积由压力蓄积状态的高压泵3B输送的燃料的共轨4;用于向经由高压燃料供给通路21供给的柴油发动机燃料的气缸喷射的喷射器 来自共轨4的燃料气体,以及用于输出用于从喷射器5A喷射燃料的喷射指令信号的ECU 80A。 燃料喷射装置1A还包括高压燃料供给通路21中的共轨4侧的节流孔75和差压传感器SdP,差压传感器SdP用于检测节流孔的上游侧和下游侧的压力差 75. ECU80A基于来自差压传感器SdP的信号,计算通过节流孔75的实际燃料供给量。