Fuel injection control system for internal combustion engines
    6.
    发明公开
    Fuel injection control system for internal combustion engines 失效
    System zur Steuerung der KraftstoffeinspritzungfürBrennkraftmaschinen。

    公开(公告)号:EP0684374A3

    公开(公告)日:1998-03-11

    申请号:EP95202046.9

    申请日:1992-08-14

    IPC分类号: F02D41/32 F02D41/34 F02D41/38

    摘要: A fuel injection control system for a cylinder injection/spark ignition internal combustion engine (1) in which fuel is injected directly into cylinders through fuel injection valves (2). An ECU (6) determines a desired fuel injection amount (Qm) based upon the engine speed (Ne) and engine load (θACC), determines a desired fuel pressure (PFM) to be supplied to the fuel injection valves (2) and controls the actual fuel supply pressure (PF) to the desired fuel pressure (PFM). The ECU (6) causes the fuel to be injected when the crank angle of the engine (1) falls within a predetermined range (20 BTDC to 5 ° ATDC) in the vicinity of a top dead point (TDC) of the cylinder corresponding to the compression stroke thereof. Cylinder pressure is determined by sensor a (3), and the ECU (6) determines the actual amount of fuel (QSAMP) injected over time intervals substantially shorter than the injection period corresponding to the full desired fuel amount (QM), based on the difference between the injected fuel pressure and the cylinder pressure. This value is then subtracted from the desired fuel amount (QM) to control the termination of the fuel injection.

    摘要翻译: 提供一种燃料喷射控制系统,用于汽缸喷射/火花点火式内燃机(1),其中燃料通过安装在气缸盖中的各个燃料喷射阀(2)直接注入气缸。 ECU(6)基于发动机转速(Ne)和发动机负载条件(θACC)确定期望的燃料喷射量(Qm),确定要供给到燃料喷射阀(2)的期望燃料压力(PFM) )并将实际的燃料供应压力(PF)控制到所需的燃料压力(PFM)。ECU(6)基于发动机转速使燃料以所需的燃料压力(PFM)供应给每个燃料喷射阀 当发动机(1)的曲柄角落在对应于其压缩冲程的气缸的上死点(TDC)附近的预定范围内时,将燃料喷射到相应的气缸中 。 预定的曲柄角范围设定在20°BTDC至5°ATDC的范围。 提供了用于确保将正确数量的燃料供应到气缸中的装置,而与气缸压力的变化无关。

    Valve operating system in internal combustion engine
    8.
    发明公开
    Valve operating system in internal combustion engine 失效
    内燃机阀门操作系统

    公开(公告)号:EP0821140A1

    公开(公告)日:1998-01-28

    申请号:EP97305557.7

    申请日:1997-07-24

    IPC分类号: F01L9/04

    CPC分类号: F01L9/04

    摘要: A valve operating system in an internal combustion engine, that can be readily assembled and installed on the engine, including a casing (11) coupled to an upper surface of a cylinder head (5), an armature (12), a pair of electromagnets (13,14) for exerting electromagnetic forces on the armature in directions of opening and closing of an engine valve (V), and a pair of resilient means (15,16) for biasing the engine valve in the opening and closing directions, respectively, and for retaining the armature at a predetermined neutral position by cooperation with earth other during deenergization of both the electromagnets. The resilient means (16) for closing the engine valve is mounted between a retainer (38) fixed to the valve stem (8)and a fixed position on the cylinder head, and the electromagnets are fixed within the casing which is constructed so that an upper portion of the stem can be inserted into the casing. Accommodated within the casing are the armature (12) separatably coaxially connected at an upper end of the stem, and the resilient means (15) for opening the engine valve, which also serves to provide a resilient force for urging the armature against the first electromagnet to support the armature, when the armature is not connected to the stem.

    摘要翻译: 一种内燃机中的气门操作系统,其可以容易地组装并安装在发动机上,包括联接到气缸盖(5)的上表面的壳体(11),电枢(12),一对电磁体 (13,14),其用于在发动机气门(V)的打开和关闭方向上向电枢施加电磁力;以及一对弹性装置(15,16),其用于分别在打开方向和关闭方向上偏置发动机气门 并且用于在两个电磁体断电期间通过与另一个地的配合将电枢保持在预定的中性位置。 用于关闭发动机气门的弹性装置(16)安装在固定在气门杆(8)上的固定件(38)和固定在气缸盖上的位置之间,电磁铁固定在壳体内, 杆的上部可插入壳体中。 壳体内容纳有可分离地同轴地连接在杆的上端处的电枢(12)和用于打开发动机阀的弹性装置(15),该弹性装置还用于提供用于将衔铁抵靠第一电磁体 当电枢未连接到杆上时支撑电枢。

    Fuel injection control system for internal combustion engines
    9.
    发明公开
    Fuel injection control system for internal combustion engines 失效
    System zur Steuerung der KraftstoffeinspritzungfürBrennkraftmaschinen。

    公开(公告)号:EP0684374A2

    公开(公告)日:1995-11-29

    申请号:EP95202046.9

    申请日:1992-08-14

    IPC分类号: F02D41/32 F02D41/34 F02D41/38

    摘要: A fuel injection control system for a cylinder injection/spark ignition internal combustion engine (1) in which fuel is injected directly into cylinders through fuel injection valves (2). An ECU (6) determines a desired fuel injection amount (Qm) based upon the engine speed (Ne) and engine load (θACC), determines a desired fuel pressure (PFM) to be supplied to the fuel injection valves (2) and controls the actual fuel supply pressure (PF) to the desired fuel pressure (PFM). The ECU (6) causes the fuel to be injected when the crank angle of the engine (1) falls within a predetermined range (20 BTDC to 5 ° ATDC) in the vicinity of a top dead point (TDC) of the cylinder corresponding to the compression stroke thereof. Cylinder pressure is determined by sensor a (3), and the ECU (6) determines the actual amount of fuel (QSAMP) injected over time intervals substantially shorter than the injection period corresponding to the full desired fuel amount (QM), based on the difference between the injected fuel pressure and the cylinder pressure. This value is then subtracted from the desired fuel amount (QM) to control the termination of the fuel injection.

    摘要翻译: 一种用于气缸喷射/火花点火内燃机(1)的燃料喷射控制系统,其中燃料通过燃料喷射阀(2)直接喷射到气缸中。 ECU(6)基于发动机转速(Ne)和发动机负荷(θACC)确定期望的燃料喷射量(Qm),确定要供给到燃料喷射阀(2)的期望燃料压力(PFM)和 将实际燃料供应压力(PF)控制到所需的燃料压力(PFM)。 当发动机(1)的曲柄角落在气缸的上死点(TDC)附近的预定范围(20°BTDC至5°ATDC)内时,ECU(6)使燃油喷射。 到其压缩冲程。 气缸压力由传感器a(3)确定,并且ECU(6)基于相当于完全期望燃料量(QM)的喷射周期的时间间隔确定喷射的实际燃料量(QSAMP),基于 注入燃料压力和气缸压力之间的差异。 然后从期望的燃料量(QM)中减去该值,以控制燃料喷射的终止。