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    HIGH-PRESSURE PUMP
    3.
    发明申请
    HIGH-PRESSURE PUMP 审中-公开
    高压泵

    公开(公告)号：US20150132166A1

    公开(公告)日：2015-05-14

    申请号：US14539329

    申请日：2014-11-12

    Applicant: DENSO CORPORATION

    Inventor： Hideaki UKAI ,  Eiji ITOH ,  Hiroshi INOUE

    IPC: F02M37/04 ,  F02M31/20 ,  F04B53/08 ,  F02M37/00

    CPC classification number: F04B53/08 ,  F02M31/20 ,  F02M37/0052 ,  F02M59/442 ,  F02M63/0265 ,  F04B53/04

    Abstract: A high-pressure pump includes a plunger, a cylinder, a pressuring chamber, a pump body, a main fuel chamber, an auxiliary fuel chamber and a return passage. The cylinder slidably houses the plunger therein. Fuel is pressurized inside the pressurizing chamber by sliding movement of the plunger. The pump body houses the cylinder and has an end surface on an opposite side of the pump body relative to the pressurizing chamber in an axial direction. The main fuel chamber is disposed inside the pump body into which fuel is supplied. The auxiliary fuel chamber has a side defined by one end of the cylinder on an opposite side of the cylinder relative to the pressurizing chamber. The return passage is disposed inside the pump body and is in fluid communication with an external cooling unit. Fuel leaking out from the pressurizing chamber through a clearance between the cylinder and the plunger is collected inside the auxiliary fuel chamber, and the collected fuel flows toward the external cooling unit through the return passage.

    Abstract translation: 高压泵包括柱塞，气缸，加压室，泵体，主燃料室，辅助燃料室和回流通道。 圆筒可滑动地将柱塞容纳在其中。 燃料通过柱塞的滑动运动在加压室内加压。 泵体容纳气缸，并且在轴向相对于加压室的相对侧具有端面。 主燃料室设置在供给燃料的泵体内。 辅助燃料室具有由气缸的一端限定在气缸相对于加压室的相反侧的一侧。 返回通道设置在泵体内部并与外部冷却单元流体连通。 从加压室通过气缸和柱塞之间的间隙泄漏的燃料被收集在辅助燃料室内部，并且所收集的燃料通过返回通道流向外部冷却单元。

    HIGH PRESSURE FUEL PUMP
    4.
    发明申请
    HIGH PRESSURE FUEL PUMP 有权

    公开(公告)号：US20230082111A1

    公开(公告)日：2023-03-16

    申请号：US17988149

    申请日：2022-11-16

    Applicant: DENSO CORPORATION

    Inventor： Hiroshi INOUE

    IPC: F16J9/10 ,  F04B53/14 ,  F04B53/16

    Abstract: A seal ring is in contact with an outer peripheral surface of a plunger. A biasing ring is made of a material having a lower fuel resistance than the seal ring, and is provided radially outwardly with respect to the seal ring in a seal chamber so as to bias the seal ring against the plunger. An axial position of a portion of the seal ring where a surface pressure on the plunger is maximum is defined as a maximum surface pressure position. The seal ring has diameter changing portions in both axial directions with respect to the maximum surface pressure position. The diameter changing portions are formed so as to have an outer diameter smaller than that of the portion corresponding to the maximum surface pressure position.

    HIGH-PRESSURE PUMP
    5.
    发明申请
    HIGH-PRESSURE PUMP 有权

    公开(公告)号：US20210404431A1

    公开(公告)日：2021-12-30

    申请号：US17470152

    申请日：2021-09-09

    Applicant: DENSO CORPORATION

    Inventor： Hiroshi INOUE

    IPC: F02M59/46 ,  F02M37/16 ,  F02M37/00 ,  F02M37/04 ,  F02M59/02 ,  F04B7/00 ,  F04B53/10

    Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

    HIGH-PRESSURE PUMP
    7.
    发明申请
    HIGH-PRESSURE PUMP 审中-公开
    高压泵

    公开(公告)号：US20150132165A1

    公开(公告)日：2015-05-14

    申请号：US14539498

    申请日：2014-11-12

    Applicant: DENSO CORPORATION

    Inventor： Hiroshi INOUE ,  Eiji ITOH

    IPC: F02M59/44 ,  F02M37/04

    CPC classification number: F02M59/442 ,  F02M37/043 ,  F02M59/025 ,  F02M59/366 ,  F02M59/44 ,  F02M59/48 ,  F02M2200/315 ,  F02M2200/803 ,  F02M2200/8061

    Abstract: A high-pressure pump includes a pump body, a cylinder, a plunger, and a plug. The pump body has a fuel chamber therein into which fuel is supplied. The cylinder is disposed inside the pump body and having one end immediately adjacent to the fuel chamber. The cylinder has an inner threaded portion formed on an inner wall of the cylinder at the one end. The plunger is disposed inside the cylinder and is reciprocally movable in an axial direction to change a volume of a pressurizing chamber within which the fuel supplied from the fuel chamber is pressurized. The plug is screwed into the inner threaded portion of the cylinder from the fuel chamber in the axial direction and closing the one end of the cylinder. The plug has an end surface that faces an end surface of the plunger and defines the pressurizing chamber together with the end surface of the plunger. The end surface of the plug is parallel to the end surface of the plunger.

    Abstract translation: 高压泵包括泵体，气缸，柱塞和塞子。 泵体内有一个燃料室，供应燃料。 气缸设置在泵体的内部，其一端紧邻燃料室。 气缸具有在一端形成在气缸的内壁上的内螺纹部分。 柱塞设置在气缸内部并且可沿轴向往复运动，以改变其中从燃料室供应的燃料被加压的加压室的体积。 塞子沿轴向从燃料室旋入汽缸的内螺纹部分，并关闭汽缸的一端。 插头具有面向柱塞的端面的端面，并与柱塞的端面一起限定加压室。 塞子的端面平行于柱塞的端面。

    HIGH-PRESSURE PUMP
    9.
    发明申请
    HIGH-PRESSURE PUMP 审中-公开
    高压泵

    公开(公告)号：US20150059880A1

    公开(公告)日：2015-03-05

    申请号：US14535943

    申请日：2014-11-07

    Applicant: DENSO CORPORATION

    Inventor： Hiroshi INOUE

    IPC: F02M37/00 ,  F02M37/04

    CPC classification number: F02M59/466 ,  F02M37/00 ,  F02M37/0023 ,  F02M37/04 ,  F02M37/16 ,  F02M59/025 ,  F04B7/0053 ,  F04B7/0076 ,  F04B53/1087 ,  Y10T137/7837

    Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

    Abstract translation: 高压泵具有计量阀和阀塞。 止动器具有阀的端面与其接触的调节部。 调节部的外径等于阀的外周面的外径。 圆筒套围绕调节部分设置。 当阀的端面与调节部分接触时，套筒覆盖阀的锥形表面。

    HIGH-PRESSURE PUMP
    10.
    发明申请
    HIGH-PRESSURE PUMP 审中-公开

    公开(公告)号：US20200224608A1

    公开(公告)日：2020-07-16

    申请号：US16828051

    申请日：2020-03-24

    Applicant: DENSO CORPORATION

    Inventor： Keita KURIGAMI ,  Shinichiro KOSHIMOTO ,  Yoshihito SUZUKI ,  Hiroshi INOUE ,  Tatsumi OGURI ,  Keigo OHATA ,  Takayuki MAKIHARA ,  Taiki KUKITA

    IPC: F02M21/02 ,  F02M37/00

    Abstract: A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.

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