公开(公告)号：US20140251262A1

公开(公告)日：2014-09-11

申请号：US14198792

申请日：2014-03-06

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Kazuki YOSHIMURA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Eiji ISHII ,  Takahiro SAITO

IPC: F02M63/00

CPC classification number: F02M63/0078 ,  F02M51/061 ,  F02M61/162

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes swirling chambers each having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, paths for swirling each of which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the associated one of the swirling chambers, and fuel injection orifices open into the associated swirling chambers, respectively. In the fuel injection valve, a curved portion is formed on the bottom, in a sectional view along the valve axis direction, of an inlet portion of each of the paths for swirling so as to change the fuel flow in each of the paths for swirling.

Abstract translation: 提供一种实现旋转燃料的圆周均匀性提高的燃料喷射阀。 燃料喷射阀包括旋转室，每个旋转室具有内壁，其曲率从上游到下游逐渐变大，用于旋转的路径具有沿阀轴线方向形成的燃料流入区域，其将燃料引导到相关联的一个 的旋转室，并且燃料喷射孔分别打开到相关的旋转室中。 在燃料喷射阀中，在沿着阀轴方向的截面图的底部形成有用于旋转的每个路径的入口部分的弯曲部分，以便改变每个回旋路径中的燃料流量 。

公开(公告)号：US20140027542A1

公开(公告)日：2014-01-30

申请号：US13951002

申请日：2013-07-25

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Kazuki YOSHIMURA ,  Yoshio OKAMOTO ,  Eiji ISHII ,  Noriyuki MAEKAWA ,  Takahiro SAITO ,  Atsushi NAKAI

IPC: F02M61/16

CPC classification number: F02M61/163 ,  F02M61/162 ,  F02M61/1806 ,  F02M61/1846 ,  F02M61/1853 ,  F02M61/186

Abstract: A fuel injection valve is disclosed with enhanced uniformity of a swirl flow in the circumferential direction. The valve includes a swirling chamber having an inner wall surface with a helical curve and a swirling passage for guiding fuel into the chamber. The valve is formed such that the center of a circle as the basis of the helical curve and the center of a fuel injection hole open in the swirling chamber align with one another. The joint between the passage for swirling and the inner circumferential wall on the downstream side of the chamber at which both walls intersect is positioned between a line from the center of the hole to a point at which the curvature of the swirling chamber shape starts to change; and a tangent line of the side wall of the hole so drawn that it is in parallel to the line segment.

Abstract translation: 公开了一种在圆周方向上具有增强的涡流的均匀性的燃料喷射阀。 该阀包括具有螺旋曲线的内壁表面和用于引导燃料进入腔室的旋流通道的旋转室。 阀形成为使作为螺旋曲线的基础的圆的中心和在旋转室中打开的燃料喷射孔的中心彼此对准。 旋转通道与两壁相交的室的下游侧的内周壁之间的接合部位于从孔的中心到旋转室形状的曲率开始变化的点之间 ; 以及如此绘制的孔的侧壁的切线，使其与线段平行。

公开(公告)号：US20140251264A1

公开(公告)日：2014-09-11

申请号：US14199378

申请日：2014-03-06

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Kazuki YOSHIMURA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Eiji ISHII ,  Takahiro SAITO

IPC: F02M63/00

CPC classification number: F02M63/0078 ,  F02M61/162 ,  F02M61/1853

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes swirling chambers each having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, paths for swirling each of which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the associated one of the swirling chambers, and fuel injection orifices open into the associated swirling chambers, respectively. In the fuel injection valve, the paths for swirling are interconnected in a central portion of an orifice plate and are smaller in height toward where they are interconnected.

Abstract translation: 提供一种实现旋转燃料的圆周均匀性提高的燃料喷射阀。 燃料喷射阀包括旋转室，每个旋转室具有内壁，其曲率从上游到下游逐渐变大，用于旋转的路径具有沿阀轴线方向形成的燃料流入区域，其将燃料引导到相关联的一个 的旋转室，并且燃料喷射孔分别打开到相关的旋转室中。 在燃料喷射阀中，涡流的路径在孔板的中心部分相互连接，并且在相互连接的位置上的高度较小。

公开(公告)号：US20140027541A1

公开(公告)日：2014-01-30

申请号：US13948844

申请日：2013-07-23

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Eiji ISHII ,  Kazuki YOSHIMURA ,  Takahiro SAITO ,  Nobuaki KOBAYASHI

IPC: F02M61/16

CPC classification number: F02M61/163 ,  F02M51/0682 ,  F02M61/162 ,  F02M61/1853 ,  F02M61/188

Abstract: A fuel injection valve which ensures improved uniformity of a swirl flow in a circumferential direction. It includes: a valve element provided movably; a nozzle body with an opening downstream, including a valve seat face for the valve element to rest on in a valve closed state; a swirling path communicating with the opening of the nozzle body, located downstream of the opening; a swirling chamber located downstream of the swirling path, in which fuel is swirled and given a swirling force; and a fuel injection hole formed at the bottom of the swirling chamber to inject fuel outward. The swirling chamber has an inner wall surface which makes a spiral curve. The swirling chamber and the fuel injection hole are formed so that the center of a base circle for the spiral curve coincides with the center of the fuel injection hole.

Abstract translation: 一种燃料喷射阀，其确保旋转流在圆周方向上的均匀性得到改善。 它包括：可移动地设置的阀元件; 具有下游开口的喷嘴体，包括用于阀元件在阀关闭状态下静止的阀座面; 与喷嘴体的开口连通的旋转路径，位于开口的下游; 位于旋转路径下游的旋转室，其中燃料旋转并产生旋转力; 以及形成在旋转室的底部的燃料喷射孔，以向外喷射燃料。 旋转室具有形成螺旋曲线的内壁表面。 旋转室和燃料喷射孔形成为使得螺旋曲线的基圆的中心与燃料喷射孔的中心重合。

公开(公告)号：US20130175367A1

公开(公告)日：2013-07-11

申请号：US13737645

申请日：2013-01-09

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Takahiro SAITO

IPC: F02M51/06

CPC classification number: F02M61/1853 ,  F02M51/061 ,  F02M51/0664 ,  F02M61/162

Abstract: One passage for swirling is formed in an orifice plate fixed on a nozzle body. Two swirl chambers in which fuel is caused to swirl so that the fuel has swirling force are provided at an end of the one passage for swirling on the downstream side of the flow direction of fuel. Therefore, the collision between the swirling flow in the swirl chamber and the fuel flowing in the passage for swirling is mitigated, and the swirling flow can be smoothly produced to promote pulverization of sprays injected from fuel injection ports.

Abstract translation: 用于旋转的一个通道形成在固定在喷嘴体上的孔板中。 在燃料流动方向下游侧的一个通道的端部设置有两个涡流室，其中使燃料旋转，使得燃料具有旋转力。 因此，能够缓和涡流室内的回旋流与在旋转通路中流动的燃料之间的碰撞，能平滑地产生回旋流，促进从燃料喷射口喷射的喷雾的粉碎。

公开(公告)号：US20130255640A1

公开(公告)日：2013-10-03

申请号：US13768564

申请日：2013-02-15

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Yoshio OKAMOTO ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Takahiro SAITO

IPC: F02M69/04

CPC classification number: F02M69/04 ,  F02M51/0664 ,  F02M61/162 ,  F02M61/1806 ,  F02M61/1853

Abstract: A fuel injection valve which has: swirl chambers each having an inner wall whose curvature is gradually increased from upstream to downstream along fuel flow; passages for swirling motion, the passages permitting introduction of fuel into the swirl chambers; fuel injection holes opening into the swirl chambers and including at least two narrow-angle injection holes and a wide-angle injection hole from which at least two narrow-angle sprays and a wide-angle spray are respectively ejected; and an orifice plate provided with the injection holes. The narrow-angle injection holes are spaced a given distance from the center of the orifice plate. The wide-angle injection hole is formed on a line perpendicularly intersecting a line segment that interconnects the centers of the narrow-angle injection holes.

Abstract translation: 一种燃料喷射阀，其具有：各自具有内壁的旋转室，所述内壁的曲率沿着燃料流从上游到下游逐渐增加; 用于旋转运动的通道，允许将燃料引入涡流室中的通道; 燃料喷射孔通向涡流室，并且包括至少两个窄角喷射孔和广角喷射孔，至少两个窄角喷雾和广角喷雾分别喷射出来; 以及设置有喷射孔的孔板。 窄角度喷射孔与孔板的中心隔开给定距离。 广角喷射孔形成在与窄角度喷射孔的中心相互连接的线段垂直相交的线上。

公开(公告)号：US20160305385A1

公开(公告)日：2016-10-20

申请号：US15189069

申请日：2016-06-22

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Takahiro SAITO

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

Abstract: One passage for swirling is formed in an orifice plate fixed on a nozzle body. Two swirl chambers in which fuel is caused to swirl so that the fuel has swirling force are provided at an end of the one passage for swirling on the downstream side of the flow direction of fuel. Therefore, the collision between the swirling flow in the swirl chamber and the fuel flowing in the passage for swirling is mitigated, and the swirling flow can be smoothly produced to promote pulverization of sprays injected from fuel injection ports.

公开(公告)号：US20150021414A1

公开(公告)日：2015-01-22

申请号：US14510581

申请日：2014-10-09

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshihito YASUKAWA ,  Yoshio OKAMOTO ,  Takahiro SAITO ,  Masanori ISHIKAWA ,  Eiji ISHII ,  Nobuaki KOBAYASHI ,  Noriyuki MAEKAWA

IPC: F02M61/16 ,  F02B31/00

CPC classification number: F02M61/162 ,  F02B31/00 ,  F02M51/061 ,  F02M61/1853 ,  F02M61/188

Abstract: A fuel injection valve includes: a swirl chamber having an inner peripheral wall formed to be gradually increased in curvature toward a downstream side from an upstream side; a swirl passage, through which a fuel is introduced into the swirl chamber; and a fuel injection port opened to the swirl chamber, wherein the swirl chamber and the swirl passage are formed so that a side wall of the swirl passage connected to a downstream end side of the swirl chamber, or an extension thereof is made not to intersect a downstream side portion of the inner peripheral wall of the swirl chamber, or an extension thereof,

Abstract translation: 燃料喷射阀包括：旋流室，其具有形成为从上游侧向下游侧逐渐增加的曲率的内周壁; 涡流通道，燃料通过该涡流通道引入涡流室; 以及向所述涡流室开口的燃料喷射口，其特征在于，所述涡流室和所述涡流通路形成为使得与所述涡流室的下游端侧连接的涡旋通路的侧壁或其旋转延伸部不相交 涡流室的内周壁的下游侧部分或其延伸部，

公开(公告)号：US20140251263A1

公开(公告)日：2014-09-11

申请号：US14198860

申请日：2014-03-06

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yoshio OKAMOTO ,  Kazuki YOSHIMURA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Eiji ISHII ,  Takahiro SAITO

IPC: F02M63/00

CPC classification number: F02M63/0078 ,  F02M61/163 ,  F02M61/184 ,  F02M61/1853

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes a swirling chamber having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, a path for swirling which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the swirling chamber, and a fuel injection orifice open into the swirling chamber. In the fuel injection valve, the path for swirling is inclined toward the fuel injection orifice formed on a downstream side of the swirling chamber.

Abstract translation: 提供一种实现旋转燃料的周向均匀性提高的燃料喷射阀。 燃料喷射阀包括旋转室，其具有从上游到下游的曲率逐渐变大的内周壁，具有沿着阀轴方向形成的燃料流入区域的旋转路径将燃料引导到旋转室， 以及通向旋转室的燃料喷射孔。 在燃料喷射阀中，用于旋转的路径朝向形成在旋转室的下游侧的燃料喷射孔倾斜。

公开(公告)号：US20130256428A1

公开(公告)日：2013-10-03

申请号：US13768718

申请日：2013-02-15

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Yoshio OKAMOTO ,  Nobuya SEKIYAMA ,  Yoshihito YASUKAWA ,  Noriyuki MAEKAWA ,  Nobuaki KOBAYASHI ,  Takahiro SAITO

IPC: F02M61/16

CPC classification number: F02M61/162 ,  B05B1/185 ,  B05B1/341 ,  F02M51/0664 ,  F02M61/163 ,  F02M61/1806 ,  F02M61/1813 ,  F02M61/182 ,  F02M61/1846 ,  F02M61/1853

Abstract: An object of the present invention is to provide a fuel injection valve that is made superior in atomization performance by preventing an influence of minute deformation occurring when an orifice plate is assembled to a nozzle body, thereby reducing fuel leakage from a swirling passage to increase the strength of a swirl flow. The valve includes a valve body openable and closable to jet fuel; a nozzle body having a valve seat surface capable of coming into contact with the valve body to block the jet of fuel; and an orifice plate disposed downstream of the valve seat surface and having a plurality of fuel injection holes adapted to jet swirl fuel. The nozzle body has an end face portion with a downwardly convex inclined surface.

Abstract translation: 本发明的目的是提供一种燃料喷射阀，其通过防止当孔板组装到喷嘴体时发生微小变形的影响而使雾化性能优异，从而减少来自涡流通道的燃料泄漏，从而增加 涡流的强度。 该阀包括可开启和关闭以喷射燃料的阀体; 具有能够与阀体接触以阻挡燃料喷射的阀座表面的喷嘴体; 以及设置在所述阀座表面的下游并具有适于喷射涡流燃料的多个燃料喷射孔的孔板。 喷嘴体具有向下凸出的倾斜表面的端面部分。