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公开(公告)号：US20210190025A1
公开(公告)日：2021-06-24
申请号：US16754824
申请日：2018-11-13
摘要： The conventional penetration control has a problem that the penetrations of all the injection holes change. An object of the invention is to provide a fuel injection valve having a simple structure and capable of selectively controlling a penetration force of spray injected in a piston direction by a lift amount.
In order to solve the above problem, the fuel injection valve of the invention is a fuel injection valve for injecting fuel to a combustion chamber of an internal combustion engine, which includes a valve body that is lifted by any one of a first lift amount of a maximum valve body lift amount and a second lift amount smaller than the first lift amount. In a case where the maximum valve body lift amount of the valve body is the first lift amount, a flow path area of a seat portion is larger than a sum of flow path areas of all injection holes, and in a case where the maximum valve body lift amount of the valve body is the second lift amount, the flow path area of the seat portion is smaller than the sum of flow path areas of all the injection holes.-
公开(公告)号：US20190257264A1
公开(公告)日：2019-08-22
申请号：US16347099
申请日：2017-11-21
发明人： Akira IIZUKA , Tohru ISHIKAWA , Takao MIYAKE , Kazuki YOSHIMURA
摘要： A fuel injection device including a valve body having an injection hole-formed part having a plurality of injection holes on the leading end side of the valve body. An injection hole comprises a crossing angle, θ1, between a central axis of the injection hole-formed part and an injection hole axis, and another injection hole comprises a crossing angle, θ2, between the central axis and another injection hole axis. θ2 is larger than θ1. The injection holes are formed such that a distance between the central axis and an inlet surface center of the injection hole is longer than a distance between the central axis and another inlet surface center of the another injection hole. A straight line beyond an outlet surface in the injection hole axis does not intersect with another straight line beyond another outlet surface in the another injection hole axis.
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公开(公告)号：US20190211791A1
公开(公告)日：2019-07-11
申请号：US16301552
申请日：2017-04-13
发明人： Yoshihito YASUKAWA , Kiyotaka OGURA , Takao MIYAKE , Akira IIZUKA , Kazuki YOSHIMURA , Akiyasu MIYAMOTO
CPC分类号： F02M61/18 , F02M51/061 , F02M61/10 , F02M61/1813 , F16K1/443
摘要： Provided is a structure capable of reducing dribbling of fuel generated when a valve body is closed. In order to achieve the above object, a fuel injection device includes: a valve body; and a seat member having a seat portion on which the valve body is seated and having a fuel injection hole formed on a downstream side of the seat portion. The seat member is formed such that a gap between the seat member and the opposing valve body in the whole region on the downstream side of the fuel injection hole is smaller than a diameter of the fuel injection hole.
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公开(公告)号：US20190170102A1
公开(公告)日：2019-06-06
申请号：US16303419
申请日：2017-01-20
发明人： Mitsuhiro MATSUZAWA , Kazuki YOSHIMURA , Eiji ISHll , Akihiro YAMAZAKI , Takahiro SAITO , Nobuaki KOBAYASHI
摘要： An object of the invention is to achieve sufficient atomization, while preventing a spray from spreading. A fuel injection valve includes a plurality of swirl fuel injection passages. Each of the swirl fuel injection passages includes a swirl chamber, a swirl chamber introduction passage, and an orifice and imparts a swirling force to fuel to thereby inject the fuel outside. A rectangular coordinate system is imagined on an imaginary plane. The rectangular coordinate system has a center of an inlet opening surface of the orifice as an origin and has an X-axis extending in parallel with a centerline of the swirl chamber introduction passage and being positive in a direction from an upstream side toward a downstream side of the swirl chamber introduction passage and a Y-axis extending perpendicularly to the X-axis and being positive in a direction away from the centerline. When the positive direction of the X-axis is defined as 0° and an angular direction of rotation from an angular position of 0° toward the centerline of the swirl chamber introduction passage is defined as a positive angular direction, the orifice has an inclination direction set to fall within a range from 0° to 180°, both exclusive, and a part of the inlet opening surface of the orifice is formed in the swirl chamber introduction passage.
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公开(公告)号：US20180149127A1
公开(公告)日：2018-05-31
申请号：US15568282
申请日：2016-04-08
发明人： Tomoyuki HOSAKA , Eiji ISHII , Yoshihiro SUKEGAWA , Taisuke SUGII , Kazuki YOSHIMURA , Kazuhiro ORYOJI , Masayuki SARUWATARI
摘要： Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.
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公开(公告)号：US20140251264A1
公开(公告)日：2014-09-11
申请号：US14199378
申请日：2014-03-06
发明人： Yoshio OKAMOTO , Kazuki YOSHIMURA , Noriyuki MAEKAWA , Nobuaki KOBAYASHI , Eiji ISHII , Takahiro SAITO
IPC分类号： F02M63/00
CPC分类号： F02M63/0078 , F02M61/162 , F02M61/1853
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20140027541A1
公开(公告)日：2014-01-30
申请号：US13948844
申请日：2013-07-23
发明人： Yoshio OKAMOTO , Yoshihito YASUKAWA , Noriyuki MAEKAWA , Eiji ISHII , Kazuki YOSHIMURA , Takahiro SAITO , Nobuaki KOBAYASHI
IPC分类号： F02M61/16
CPC分类号： F02M61/163 , F02M51/0682 , F02M61/162 , F02M61/1853 , F02M61/188
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20210131372A1
公开(公告)日：2021-05-06
申请号：US16481304
申请日：2018-02-05
发明人： Tomoyuki HOSAKA , Taisuke SUGII , Eiji ISHII , Kazuki YOSHIMURA , Yoshihiro SUKEGAWA , Masayuki SARUWATARI
摘要： An object of the present invention is to provide a control device of an injector capable of suppressing the influence of pressure reduction boiling even if pressure in a combustion chamber is low. In a case where the temperature of fuel injected from a fuel injection valve is within a set high temperature region and the pressure of the combustion chamber is within a set low pressure region, the control device of an in-cylinder direct injection-type injector according to the present invention controls to increase a lift amount of the injector as compared to the case of a low temperature region or a high pressure region.
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公开(公告)号：US20200182212A1
公开(公告)日：2020-06-11
申请号：US16343902
申请日：2017-09-01
发明人： Mitsuhiro MATSUZAWA , Kazuki YOSHIMURA , Eiji ISHII , Akihiro YAMAZAKI , Takahiro SAITO , Nobuaki KOBAYASHI
摘要： Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray. In the fuel injection valve according to the present invention, when a nozzle plate 6 and a first direction 15a-1 in which fuel is sprayed are projected onto a virtual plane perpendicular to a central axis line of the fuel injection valve along an opening and closing valve direction of a valve body and a first orthogonal coordinate system having an X1 passing through a center O1 of the nozzle plate 6 and along the first direction 15a-1 and a Y1 axis passing through the center O1 of the nozzle plate 6 and perpendicular to the X1 axis is virtualized on the virtual plane, an introduction passage 11a-1 is inclined so that a straight line segment 14a-1 connecting between a central point 40a-1 of an upstream side end portion and a center Oa-1 of an inlet opening surface of a fuel injection hole 13a-1 is positioned on the Y1 axis side with respect to a straight line 30a-1 passing through the central point 40a-1 and the center O1 of the nozzle plate 6.
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公开(公告)号：US20180306155A1
公开(公告)日：2018-10-25
申请号：US15779402
申请日：2016-09-21
发明人： Mitsuhiro MATSUZAWA , Kazuki YOSHIMURA , Eiji ISHII , Akihiro YAMAZAKI , Takahiro SAITO , Nobuaki KOBAYASHI
IPC分类号： F02M61/18
CPC分类号： F02M61/1813 , F02M61/18 , F02M61/182 , F02M61/1833 , F02M61/1886
摘要： It is an object of the present invention to provide a fuel injection valve that can increase the collision force of the fuel with respect to the injection hole inner wall surface and which can realize a sufficient atomization. In an imaginary plane orthogonal to a center axis line direction of a valve body, a plurality of injection holes through and through constituting a first injection hole set are formed such that an injection hole center axis extending from an injection hole inlet surface toward an injection hole outlet surface is formed to extend in a direction different from that of a straight line connecting the origin of an imaginary orthogonal coordinate system formed by an imaginary X-axis and an imaginary Y-axis and the center of an injection hole inlet surface and that the center of an injection hole outlet surface is situated close to the imaginary X-axis with respect to the center of the injection hole inlet surface.
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