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17 条记录 (耗时 0.011 秒)

    Fuel pump control for a direct injection internal combustion engine
    11.
    发明公开
    Fuel pump control for a direct injection internal combustion engine 审中-公开
    直接喷射燃料泵用于内燃机

    公开(公告)号：EP2063100A3

    公开(公告)日：2009-07-15

    申请号：EP08019839.3

    申请日：2008-11-13

    申请人： Hitachi Ltd.

    发明人： Borg, Jonathan ,  Badarinarayan, Harsha ,  McCune, Donald J. ,  Watanabe, Atsushi ,  Shiraishi, Takuya ,  Saikalis, George

    IPC分类号： F02M59/10

    CPC分类号： F02M59/366 ,  F02M2200/09 ,  F04B49/243

    摘要： A fuel pump 20 for a direct injection internal combustion engine 22 having a body 24 with a valve seat 54. The valve 50 includes a valve head 52 and the valve 50 is movably mounted to the body 24 between an open position and a closed position. In its open position, the valve head 52 is spaced from the valve seat 54 while in its closed position, the valve head 52 abuts against the valve seat 54 and closes the valve 50. An electric coil 56 upon energization moves the valve 50 to an open position and, conversely, upon deenergization allows the valve 50 to move to a closed position. A control circuit 62 controls the energization of the coil 56 to reduce the pump noise during operation of the engine 22, especially at low speeds.

    Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber
    16.
    发明公开
    Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber 有权
    用于阻尼的燃料泵的容积在直接喷射式燃烧室的方法和装置

    公开(公告)号：EP1978240A2

    公开(公告)日：2008-10-08

    申请号：EP08006761.4

    申请日：2008-04-02

    申请人： Hitachi, Ltd.

    发明人： Watanabe, Atsushi ,  Badarinarayan, Harsha ,  Borg, Jonathan ,  McCune, Donald J. ,  Shiraishi, Takuya ,  Hohkita, Atsushi ,  Soma, Masahiro ,  Saeki, Hiroaki

    IPC分类号： F02M61/16 ,  F02M69/46 ,  F02M55/02

    CPC分类号： F02M55/025 ,  F02M55/005 ,  F02M61/14 ,  F02M61/168 ,  F02M69/465 ,  F02M2200/09 ,  F02M2200/40 ,  F02M2200/8023 ,  F02M2200/856

    摘要： The present invention relates to a method and apparatus for attenuating fuel pump noise in a direct injection internal combustion engine (22). In one proposal, the direct injection fuel nozzle is suspended from a fuel rail (32) in a fashion that avoids direct metal-to-metal contact between the injector and the engine block (24). The direct injection nozzle may also be connected to the fuel rail (32) by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice (96) may be provided fluidly in series between the fuel pump (36) and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation.

    摘要翻译： 本发明涉及一种用于在一直接喷射式内燃发动机（22）衰减燃料泵的噪声的方法和装置。 在一个提议，直接喷射燃料喷嘴由以一种方式的燃料轨（32）悬浮确实避免了喷射器和发动机缸体（24）之间的直接的金属对金属的接触。 因此，该直接喷射喷嘴可连接到所述燃料轨（32）由一对间隔开的密封件操作期间哪些均衡喷嘴上的纵向压力。 直径扩大燃料储存器和/或限流孔（96）可以以衰减噪声从燃料泵脉动所得流体地设置在所述燃料泵（36）和所述直接喷射喷嘴之间。