公开(公告)号：US20150053182A1

公开(公告)日：2015-02-26

申请号：US14458624

申请日：2014-08-13

Applicant: DENSO CORPORATION

Inventor： Keigo OOHATA ,  Eiji ITOH

IPC: F02M61/14 ,  F02M61/18

CPC classification number: F02M61/14 ,  F02M2200/858

Abstract: A fuel injection valve is attached to an engine and to have an annular seal material attached thereon. The seal material is attached to a first reduced diameter part. In a use state where a body is inserted in an attachment hole formed at a predetermined position of the engine and a gas pressure that is equal to or higher than a predetermined pressure is applied to the seal material from its nozzle hole-side, the seal material is pressed against a first tapered part by the gas pressure to be compressively deformed, and a clearance between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body is sealed with a compressively-deformed part of the seal material. A taper angle of the first tapered part is set in a range from 10 degrees to 20 degrees.

Abstract translation: 燃料喷射阀安装在发动机上并具有安装在其上的环形密封材料。 密封材料附接到第一缩径部分。 在将主体插入到形成在发动机的预定位置的安装孔中并且从其喷嘴孔侧向密封材料施加等于或高于预定压力的气体压力的使用状态下，密封件 材料通过压力变形的气体压力被压靠第一锥形部分，并且安装孔的内周表面与主体的外周表面之间的间隙被密封材料的压缩变形部分密封。 第一锥形部的锥角设定在10度〜20度的范围内。

公开(公告)号：US20150034742A1

公开(公告)日：2015-02-05

申请号：US14331605

申请日：2014-07-15

Applicant: DENSO CORPORATION

Inventor： Keigo OOHATA ,  Nobuo OOTA

IPC: F02M69/04 ,  F02M51/06

CPC classification number: F02M69/042 ,  F02M51/061 ,  F02M61/14 ,  F02M2200/858

Abstract: A fuel injector includes (i) a body including a distal end portion forming an injection port, a diameter reduction portion, and a diameter expansion portion, and (ii) a seal member attached to at least the diameter reduction portion of both the diameter reduction portion and the diameter expansion portion. When the body is inserted into an attachment hole communicating with a combustion chamber of an internal combustion engine, the seal member seals between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body. The seal member includes a first taper portion chamfered and provided at an outer periphery of a distal end portion of the seal member in a case where the distal end portion of the seal member is placed at a position relatively close to the injection port.

Abstract translation: 燃料喷射器包括（i）主体，其包括形成喷射口的远端部分，直径减小部分和直径扩张部分，以及（ii）密封件，其至少连接到直径减小部分的直径减小部分 部分和直径膨胀部分。 当主体插入到与内燃机的燃烧室连通的连接孔中时，密封构件在安装孔的内周面和主体的外周面之间密封。 在密封部件的前端部位于相对靠近喷射口的位置的情况下，密封部件包括倒角并设置在密封部件的前端部的外周的第一锥形部。

公开(公告)号：US20140137841A1

公开(公告)日：2014-05-22

申请号：US14082794

申请日：2013-11-18

Applicant: DENSO CORPORATION

Inventor： Keigo OOHATA ,  Eiji ITO

IPC: F02M61/14

CPC classification number: F02M61/14 ,  F02M55/004 ,  F02M2200/02 ,  F02M2200/16

Abstract: A fuel injector includes a body having a fuel injection port, and a seal ring on the body. The body has a diameter-shrink portion of which an outer diameter is shrunk. The seal ring is engaged with the diameter-shrink portion. The diameter-shrink portion has a radially concaved annular groove with which a tip end portion of the seal ring is engaged. It is restricted that the seal ring is rubbed against an inner surface of the assembling hole and the seal ring is damaged.

Abstract translation: 燃料喷射器包括具有燃料喷射口的主体和主体上的密封环。 主体具有外径缩小的直径缩小部分。 密封环与直径缩小部分接合。 直径缩小部分具有径向凹陷的环形槽，密封环的末端部分与之接合。 限制密封环与组装孔的内表面摩擦，并且密封环损坏。