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    FUEL INJECTION VALVE
    1.
    发明申请
    FUEL INJECTION VALVE 审中-公开

    公开(公告)号：US20190331076A1

    公开(公告)日：2019-10-31

    申请号：US16508369

    申请日：2019-07-11

    Applicant: DENSO CORPORATION

    Inventor： Makoto SAIZEN ,  Shuichi MATSUMOTO ,  Keita IMAI ,  Moriyasu GOTO

    IPC: F02M51/06 ,  F02M61/10

    Abstract: A fuel injection valve includes: a coil; a stationary core to generate a magnetic force; a movable structure including a moving core and a valve body and internally having a movable flow passage; and a body that internally accommodates the movable structure and internally has a part of the flow passage. The movable structure includes a throttle portion at which a passage area of the movable flow passage is partially throttled. The flow passage includes a throttle flow passage defined by the throttle portion and a separate flow passage between the movable structure and the body. A passage area of the separate flow passage is smaller than a passage area of the throttle flow passage. A position of the separate flow passage in a direction perpendicular to a moving direction of the movable structure is different from an outermost peripheral position of the moving core.

    FUEL INJECTION VALVE AND FUEL INJECTION SYSTEM
    2.
    发明申请
    FUEL INJECTION VALVE AND FUEL INJECTION SYSTEM 审中-公开

    公开(公告)号：US20190277237A1

    公开(公告)日：2019-09-12

    申请号：US16291320

    申请日：2019-03-04

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI

    IPC: F02M61/18 ,  F02M51/06 ,  F02D41/40 ,  F02M61/16

    Abstract: An injection hole body has injection holes to inject fuel. A valve body forms a fuel passage with an inner surface of the injection hole body to communicate with inflow ports of the injection holes. The valve body opens and closes the fuel passage by being seated on and unseated from a seating surface of the injection hole body. An inflow port gap distance is a gap between the valve body and the inflow ports along a center axis of the valve body. An inter-injection hole distance is a distance between inflow ports, which are adjacent to each other, among the inflow ports placed around the center axis. The inter-injection hole distance is smaller than the inflow port gap distance in a state where the valve body is unseated from the seating surface and is at a farthest position in its movable range.

    FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM
    3.
    发明申请
    FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM 审中-公开

    公开(公告)号：US20180245534A1

    公开(公告)日：2018-08-30

    申请号：US15966058

    申请日：2018-04-30

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI

    IPC: F02D41/20 ,  F02D41/38 ,  F02D41/40 ,  F02M51/00 ,  F02M51/06

    CPC classification number: F02D41/20 ,  F02D41/38 ,  F02D41/402 ,  F02D2041/2013 ,  F02D2041/2027 ,  F02D2041/2034 ,  F02D2041/2065 ,  F02D2041/389 ,  F02M51/005 ,  F02M51/0621

    Abstract: A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.

    FUEL INJECTION VALVE
    4.
    发明申请
    FUEL INJECTION VALVE 有权

    公开(公告)号：US20230016650A1

    公开(公告)日：2023-01-19

    申请号：US17955322

    申请日：2022-09-28

    Applicant: DENSO CORPORATION

    Inventor： Yuunosuke HARADA ,  Kouichi MOCHIZUKI ,  Keita IMAI ,  Masaru MOTOKI ,  Jun YAMASHITA ,  Kouta MAEKAWA

    IPC: F02M51/06 ,  F02M61/10

    Abstract: An upper housing is provided between a fixed core and a housing opposite to a nozzle hole with respect to a coil. The upper housing is configured to form a magnetic circuit with the fixed core and the housing. The upper housing has a first tapered surface formed on an outer peripheral wall and a first cylindrical surface formed on an inner peripheral wall. The housing has a second tapered surface that radially faces the first tapered surface. The fixed core has a second cylindrical surface that radially faces the first cylindrical surface.

    FUEL INJECTION VALVE AND FUEL INJECTION SYSTEM
    5.
    发明申请
    FUEL INJECTION VALVE AND FUEL INJECTION SYSTEM 审中-公开

    公开(公告)号：US20190277235A1

    公开(公告)日：2019-09-12

    申请号：US16291270

    申请日：2019-03-04

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI

    IPC: F02M61/18

    Abstract: An injection hole body has multiple injection holes for injecting fuel. A valve body is unseated from and seated on a seating surface of the injection hole body. The injection hole body and the valve body form a specific space therebetween to communicate with inflow ports of the injection holes. A virtual region is surrounded by multiple straight lines. The straight lines connect portions of peripheral edges of the inflow ports, which are closest to a center axis of the valve body in the radial direction. A center volume is formed by extending the virtual region from the injection hole body toward the valve body along the center axis. A total injection hole volume is a total volume of the injection holes. The total injection hole volume is larger than the center volume in a state where the valve body is seated on the seating surface.

    FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM
    6.
    发明申请
    FUEL INJECTION CONTROLLER AND FUEL INJECTION SYSTEM 审中-公开
    燃油喷射控制器和燃油喷射系统

    公开(公告)号：US20140123960A1

    公开(公告)日：2014-05-08

    申请号：US14071200

    申请日：2013-11-04

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI ,  Eiji ITO

    IPC: F02D41/30

    CPC classification number: F02D41/30 ,  F02D41/08 ,  F02D41/20 ,  F02D2041/2006 ,  F02D2041/2058

    Abstract: A fuel injection controller is applied to a fuel injector injecting fuel to be combusted in an internal combustion engine by an open-valve operation of the valve body according to an electromagnetic suction force generated by an energization of a coil. The fuel injection controller controls an injection state of the fuel injector by controlling a coil current flowing through the coil. The fuel injection controller includes an increasing control portion which increases the coil current to a first target value, a holding control portion which holds the coil current increased by the increasing control portion to the first target value, and a changing portion which changes the first target value according to the operation state of the internal combustion engine.

    Abstract translation: 燃料喷射控制器被施加到燃料喷射器，该燃料喷射器根据由线圈的通电产生的电磁吸力，通过阀体的开阀操作喷射燃烧在内燃机中的燃料。 燃料喷射控制器通过控制流过线圈的线圈电流来控制燃料喷射器的喷射状态。 燃料喷射控制器包括将线圈电流增加到第一目标值的增加控制部分，将由增加的控制部分增加的线圈电流保持为第一目标值的保持控制部分，以及改变部分，其改变第一目标 值根据内燃机的运转状态而变化。

    FUEL INJECTOR AND FUEL INJECTION DEVICE USING THE SAME
    9.
    发明申请
    FUEL INJECTOR AND FUEL INJECTION DEVICE USING THE SAME 有权
    燃料喷射器和燃料喷射装置

    公开(公告)号：US20140197251A1

    公开(公告)日：2014-07-17

    申请号：US14152541

    申请日：2014-01-10

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI ,  Eiji ITOH

    IPC: F02M51/06

    CPC classification number: F02M51/0664 ,  F02M51/0675 ,  F02M61/205

    Abstract: A fuel injector includes a valve body moved together with a movable core and opening an injection port, and an elastic-force applying portion being elastically deformable according to a movement of the valve body to apply an elastic force to the valve body in a valve-closing direction. An elastic coefficient of the elastic-force applying portion is set to meet a condition that Ffc−Ffo≦L×K. In this case, a fuel-pressure valve-closing force of when the valve body is closed is referred to as Ffc, and the fuel-pressure valve-closing force of when the valve body is completely opened is referred to as Ffo. A movement distance of the valve body from a time point that the valve body is closed to a time point that the valve body is completely opened is referred to as L. The elastic coefficient is referred to as K.

    Abstract translation: 燃料喷射器包括与可动铁心一起移动并打开喷射口的阀体，以及弹性力施加部分，其可根据阀体的运动而弹性变形，以在阀体中施加弹性力至阀体， 关闭方向。 弹性力施加部的弹性系数被设定为满足Ffc-Ffo＆lt; lE; L×K的条件。 在这种情况下，将阀体关闭时的燃料压力阀关闭力称为Ffc，将阀体完全打开时的燃料压力阀关闭力称为Ffo。 阀体从阀体关闭的时间点到阀体完全打开的时间点的移动距离称为L.弹性系数称为K.

    FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE
    10.
    发明申请
    FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 有权
    燃油喷射阀内燃机

    公开(公告)号：US20140175194A1

    公开(公告)日：2014-06-26

    申请号：US14140693

    申请日：2013-12-26

    Applicant: DENSO CORPORATION

    Inventor： Keita IMAI ,  Eiji ITOH ,  Hiroaki NAGATOMO

    IPC: F02M51/06

    CPC classification number: F02M51/0614 ,  F02M51/0685 ,  F02M2200/08

    Abstract: A stationary core includes a holding hole that receives and holds a portion of the magnetic spring, which is located on a valve opening side. A solenoid device includes a magnetic yoke that extends in an axial direction and has an axial extent, which overlaps with an entire axial extent of the holding hole. The magnetic yoke has a predetermined portion, which reduces an amount of the magnetic flux that passes through the magnetic yoke in a radial direction in comparison to the rest of the magnetic yoke.

    Abstract translation: 固定铁心包括容纳并保持位于阀开口侧的一部分磁性弹簧的保持孔。 螺线管装置包括：磁轭，其在轴向方向上延伸并且具有与保持孔的整个轴向长度重叠的轴向延伸。 磁轭具有与磁轭的其余部分相比径向减小通过磁轭的磁通量的预定部分。

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