Fuel injector and internal combustion engine
    6.
    发明授权
    Fuel injector and internal combustion engine 失效
    燃油喷射器和内燃机

    公开(公告)号:US06571773B1

    公开(公告)日:2003-06-03

    申请号:US09628717

    申请日:2000-07-28

    IPC分类号: F02M5100

    摘要: The target peak current value, where a current value is reduced in conformity to a drop in the voltage of a battery 18 is stored in target peak current storage unit 68. ON-signals are sent from current control circuit 56 to power transistor 50 in response to the injection command pulse coming from engine controller 58 so that current is applied to coil 20. Then, the current flowing to coil 20 is detected by the current detecting resistor 52. Comparator 62 compares this detected current and the target peak current value read from the target peak current storage unit 68 conforming to the voltage of battery 18. If agreement is found between these two values, OFF-signals are sent to power transistor 50 from current control circuit 56 in response to the switching command coming from comparator 62. Then, On/Off signals to effect holding of the coil 20 are sent from current control circuit 56 to power transistor 50. The linearity of the injection volume despite changes in battery voltage can be maintained.

    摘要翻译: 目标峰值电流值,其当前值根据电池18的电压下降而减小存储在目标峰值电流存储单元68中。接通信号从电流控制电路56发送到功率晶体管50以作出响应 到来自发动机控制器58的喷射命令脉冲,使得电流被施加到线圈20.然后,流过线圈20的电流由电流检测电阻器52检测。比较器62将该检测到的电流与从 目标峰值电流存储单元68符合电池18的电压。如果在这两个值之间达成一致,则响应于来自比较器62的切换命令,将OFF信号从电流控制电路56发送到功率晶体管50.然后 ,用于实现线圈20的保持的开/关信号从电流控制电路56发送到功率晶体管50.尽管电池电压的变化,注入体积的线性可以 保持。

    Fuel-injection valve
    9.
    发明授权
    Fuel-injection valve 失效
    燃油喷射阀

    公开(公告)号:US07163162B2

    公开(公告)日:2007-01-16

    申请号:US10284407

    申请日:2002-10-31

    IPC分类号: F02M51/00

    摘要: A fuel-injection valve includes a fuel-injection hole, a valve element and a valve seat for opening and closing the fuel-injection hole, a force-applying member for applying force to the valve element in a direction of motion of the valve element, and a drive unit for applying force to the valve element in the direction opposite to that of the force applied by the force-applying member; wherein a secondary oscillation system, which interacts with a primary oscillation system including the valve element and the force-applying member, is added to the primary oscillation system, and the phase angle of force applied to the primary oscillation system by the secondary oscillation system is also staggered from that of force applied to the primary oscillation system, which is other than the force applied to the primary oscillation system by the secondary oscillation system, whereby the bouncing of the valve element during opening and closing of the valve is reduced, which in turn makes it possible to achieve very accurate fuel-injection control.

    摘要翻译: 燃料喷射阀包括燃料喷射孔,阀元件和用于打开和关闭燃料喷射孔的阀座,用于沿阀元件的运动方向向阀元件施加力的施力构件 以及驱动单元,用于沿与所述施力部件施加的力的方向相反的方向向所述阀元件施加力; 其中与主振荡系统相加的与包括阀元件和施力部件的主振荡系统相互作用的次级振荡系统,并且由次振荡系统施加到主振荡系统的相位角力是 也与主振荡系统的作用力交错,该主振荡系统除了通过二次振荡系统施加到主振荡系统的力之外,因此在阀的打开和关闭期间阀元件的弹跳减小,这在 转动使得可以实现非常精确的燃料喷射控制。