Fuel injection device for internal combustion engine and method of controlling fuel injection therefor
    2.
    发明专利
    Fuel injection device for internal combustion engine and method of controlling fuel injection therefor 有权
    用于内燃机的燃油喷射装置及其燃料喷射的控制方法

    公开(公告)号:JP2007162674A

    公开(公告)日:2007-06-28

    申请号:JP2006122425

    申请日:2006-04-26

    摘要: PROBLEM TO BE SOLVED: To provide a fuel injection device for an internal combustion engine and a method of controlling fuel injection by a simple structure at low cost. SOLUTION: This fuel injection device for the internal combustion engine comprises an injection nozzle 5 and an electric injector 1 having a needle 7 opening and closing the nozzle 5 by an electric actuator 8. The movement of the needle 7 is controlled by a rod 14 pressed by the pressure of a fuel in a control chamber 15 in which the needle 7 is normally maintained at the position for closing the nozzle 5. The control chamber has an inlet 18 with a diameter D 4 and an outlet passage 24 having a diameter D 5 and controlled by a control valve 16. The method for fuel injection comprises the step of selecting the ratio D 5 /D 4 of the diameters to determine the rate of the displacement of the needle 7 and the step of transmitting a first electric command C 1 and a second electric command C 2 adjacent to each other to the device 8 to move the needle 7 in the profile P operated continuously with time. COPYRIGHT: (C)2007,JPO&INPIT

    摘要翻译: 要解决的问题:提供一种用于内燃机的燃料喷射装置和以简单的结构以低成本控制燃料喷射的方法。 解决方案:这种用于内燃机的燃料喷射装置包括喷射喷嘴5和具有针7的电喷射器1,针7通过电致动器8打开和关闭喷嘴5.针7的运动由 杆14通过控制室15中的燃料压力而被按压,其中针7通常保持在用于关闭喷嘴5的位置。控制室具有直径D 4 的入口18, 和具有直径D 5 并由控制阀16控制的出口通道24.用于燃料喷射的方法包括选择比率D 5 / SB> SB > 4 以确定针7的位移速率,以及发送第一电子指令C 1 和第二电命令C 2 < SB>相邻地连接到装置8,以移动随时间连续运行的轮廓P中的针7。 版权所有(C)2007,JPO&INPIT