公开(公告)号：EP2420666B1

公开(公告)日：2015-07-01

申请号：EP10764480.9

申请日：2010-04-14

申请人： Usui Kokusai Sangyo Kaisha Limited

发明人： WATANABE Eiji

IPC分类号： F02M55/02

CPC分类号： F02M55/02 ,  B21D41/00 ,  B21D53/84 ,  F02M55/005 ,  F02M55/04 ,  F02M61/168 ,  F02M2200/28 ,  F02M2200/315 ,  F02M2200/8053

公开(公告)号：EP2420666A1

公开(公告)日：2012-02-22

申请号：EP10764480.9

申请日：2010-04-14

申请人： Usui Kokusai Sangyo Kaisha Limited

发明人： WATANABE Eiji

IPC分类号： F02M55/02

CPC分类号： F02M55/02 ,  B21D41/00 ,  B21D53/84 ,  F02M55/005 ,  F02M55/04 ,  F02M61/168 ,  F02M2200/28 ,  F02M2200/315 ,  F02M2200/8053

摘要： Problem to be solved
Provided is a diesel engine fuel injection pipe configured such that an orifice member is fixed inside of one end or the vicinity of the end of the injection pipe, wherein the orifice member is provided by a fixing means capable of withstanding extra-high fluid pressure.
Solving Means
A diesel engine fuel injection pipe comprising an orifice member having an outside diameter smaller than or substantially equal to the diameter of a pipe conduit in the diesel engine fuel injection pipe, inside of at least one end or the vicinity of the end of the injection pipe, the end having a connection head with a conical or spherical seat surface, and a fastening nut; wherein the orifice member is fixedly wedged by a reduced diameter portion of the pipe conduit in the injection pipe.

摘要翻译： 待解决的问题提供一种柴油机燃料喷射管，其构造成使得孔部件固定在喷射管的端部的一端或附近的内部，其中，孔部件由能够耐受额外加压的固定装置提供， 高流体压力。 解决方案一种柴油发动机燃料喷射管，其包括具有小于或基本等于柴油发动机燃料喷射管中的管道直径的外径的孔口构件，其内部至少一端或端部附近 注射管，该端部具有带锥形或球形座面的连接头，以及紧固螺母; 其中所述孔口构件通过所述注入管中的所述管道的直径减小的部分固定楔形。

公开(公告)号：EP2412967A1

公开(公告)日：2012-02-01

申请号：EP10756120.1

申请日：2010-03-24

申请人： Usui Kokusai Sangyo Kaisha Limited

发明人： WATANABE Eiji

IPC分类号： F02M55/02

CPC分类号： F02M55/005 ,  F16L19/0286 ,  Y10T29/49231

摘要： Problem to be solved
To provide a high-pressure fuel injection pipe which prevents generation of a crack of a pocket portion during formation of a head portion, generation of a crack due to cavitation erosion, and occurrence of tensile stress associated with formation of a pocket, and which is robust against, fatigue failure.
Solving Means
A high-pressure fuel injection pipe which has, in a connection end portion of a thick-walled and small-diametrical steel pipe, a connection head portion comprising a seat face, an annular flange portion, and a cylindrical face continuing into the seat faces wherein the connection head portion is configured such that cylindrical face has contours in a section along the axial direction of the pipe from an end portion of a fillet portion of the annular flange portion toward the seat face formed such that a rear side opening angle θ to an axis of the pipe in the section in the axial direction of the pipe satisfies 0°

摘要翻译： 要解决的问题提供一种高压燃料喷射管，其防止在形成头部部分期间产生袋部分的裂纹，由于空化侵蚀而产生裂纹，以及与形成袋口相关的拉伸应力的发生 ，并且对抗疲劳失效是强大的。 解决方案一种高压燃料喷射管，其在厚壁和小直径的钢管的连接端部具有连接头部，该连接头部包括座面，环形凸缘部和连续到 座面，其中连接头部构造成使得圆柱形表面在从环形凸缘部分的圆角部分的端部朝向座面的沿着管的轴向方向的部分中具有轮廓，所述座面形成为使得后侧开口角 ¸与管道轴向方向的管轴的距离满足0°<¸‰¤20°，此外，管子的轴向长度h与长度H之比 从连接头部的端子到筒状面的环状凸缘部侧的圆角部的端部满足0.33‰¤h / H‰0.85。