公开(公告)号：US07431781B2

公开(公告)日：2008-10-07

申请号：US11227661

申请日：2005-09-15

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: C21D8/10

CPC classification number: F02M55/025 ,  F02M55/004

Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.

Abstract translation: 本发明提供一种用于柴油发动机的共轨喷射系统，具有优异的内压疲劳抗力特性，抗振性，耐气孔性，耐断层性等优点，能够轻量化。 主导轨由转变诱导塑料型强度钢制成。 在处理主管轨之后，通过热处理产生残余奥氏体，并且执行分支孔和主管轨侧流动通道交叉部分的应力集中的还原处理。 此外，优选通过自动补焊处理在主管轨的内表面上产生诱导塑性变形，并且留下压缩残余应力。

公开(公告)号：US20060005599A1

公开(公告)日：2006-01-12

申请号：US11227661

申请日：2005-09-15

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: B21D3/00

CPC classification number: F02M55/025 ,  F02M55/004

Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.

公开(公告)号：US07125051B2

公开(公告)日：2006-10-24

申请号：US10616571

申请日：2003-07-10

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: F16L5/00

CPC classification number: F02M55/025 ,  F02M55/004

Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.

Abstract translation: 本发明提供一种用于柴油发动机的共轨喷射系统，具有优异的内压疲劳抗力特性，抗振性，耐气孔性，耐断层性等优点，能够轻量化。 主导轨由转变诱导塑料型强度钢制成。 在处理主管轨之后，通过热处理产生残余奥氏体，并且执行分支孔和主管轨侧流动通道交叉部分的应力集中的还原处理。 此外，优选通过自动补焊处理在主管轨的内表面上产生诱导塑性变形，并且留下压缩残余应力。

公开(公告)号：US20050127665A1

公开(公告)日：2005-06-16

申请号：US11012713

申请日：2004-12-15

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: F02M55/02 ,  F02M61/16 ,  F16L9/02 ,  F16L45/00

CPC classification number: F02M55/025

Abstract: There is provided a high-pressure fuel pipe for diesel engines, which is excellent in inner-pressure fatigue resistant property, vibrational fatigue resistant property, cavitation-resistant property, seat surface crack resistant property, and bending shape stability, and capable of thinning and lightening. A high-pressure fuel pipe for diesel engines, composed of a low alloy transformation inducing plastic type strength steel containing residual austenite of 5 to 40 wt %, and wherein an inner surface of a flow passage has a crack depth of 20 μm or less, and plastic working is applied to an inner surface of a flow passage.

Abstract translation: 本发明提供一种耐压耐疲劳性，抗振性，耐气孔性，座面抗裂性，弯曲形状稳定性优异的柴油发动机用高压燃料管，能够减薄， 减轻 一种用于柴油发动机的高压燃料管，由含有5〜40重量％的残余奥氏体的低合金变形诱导塑料型强度钢组成，其中，流路的内表面的裂纹深度为20μm以下， 并且将塑性加工施加到流路的内表面。

公开(公告)号：US06397881B1

公开(公告)日：2002-06-04

申请号：US09033681

申请日：1998-03-03

Applicant: Kikuo Asada ,  Masayoshi Usui ,  Eiji Watanabe ,  Kazunori Takikawa ,  Ryuichi Kusanagi

Inventor： Kikuo Asada ,  Masayoshi Usui ,  Eiji Watanabe ,  Kazunori Takikawa ,  Ryuichi Kusanagi

IPC: F16K4300

CPC classification number: B21C37/29 ,  F02M55/005 ,  F02M55/025 ,  Y10T137/6123

Abstract: A member for a high pressure fluid or a member for a high pressure fluid with a built-in slider having higher quality which can be provided at a low price, and by which the generation of tensile stress in the lower end inner peripheral edge part of a branch hole can be canceled by compressive residual stress to be effectively restrained, the internal pressure fatigue strength in the branch hole part can be improved to be excellent in durability, prevent a fluid leakage due to the occurrence of cracks and then exhibit a sure and stable function, further only the addition of the pressing force applying process to the ordinary manufacturing process will be sufficient, and complicated equipment is not required to hardly cause the problems of an increase in the equipment cost due to an increase in the number of processes and lowering of productivity. The method of forming a branch hole communicating with a hollow part in a member for a high pressure fluid having the hollow part, which is characterized in that before or after, or simultaneously with a process of pressing inward the member for a high pressure fluid from the outside to form a part where compressive stress remains on the hollow part side inner peripheral surface, a process of boring a branch hole opened to the hollow part is executed to make the compressive residual stress exist in the peripheral edge of the branch hole, and a branch hole part of a member for a high pressure fluid formed by the described method.

Abstract translation: 用于高压流体的构件或具有可以以低价格提供的具有较高质量的内置滑块的高压流体的构件，并且通过该构件在下端内周边缘部分中产生拉伸应力 可以通过压缩残余应力来消除分支孔，以有效地抑制，能够提高分支孔部的内部压力疲劳强度，从而具有优异的耐久性，防止由于裂纹的发生而导致的流体泄漏， 稳定的功能，只要在普通制造工序中增加按压力就足够了，而且复杂的设备不需要几乎不会由于加工次数的增加而造成设备成本上升的问题， 降低生产率。在具有中空部分的高压流体的构件中形成与中空部分连通的分支孔的方法，其是cha 其特征在于，在其前后，或者同时具有从外部向内压入高压流体的构件的过程，以形成在中空部件侧内周面上残留有压应力的部分，打开分支孔的工序 执行到中空部分以使分支孔的周边边缘存在压缩残余应力，以及通过所述方法形成的用于高压流体的部件的分支孔部分。

公开(公告)号：US20050005913A1

公开(公告)日：2005-01-13

申请号：US10616841

申请日：2003-07-10

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: F02M55/02

CPC classification number: F02M55/02 ,  F02M2200/8046 ,  F02M2200/8053 ,  F02M2200/9053 ,  F02M2200/9061 ,  Y10T29/49432

Abstract: A high pressure fuel injection pipe is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. In the high pressure fuel injection pipe, pipe extension and heat treatment are repeated by using a header manufactured by transformation induced plastic type strength steel, and processing for depositing residual austenite is then performed and final pipe extension processing is performed, and a joint portion is molded and bending processing is performed without performing perfect annealing at the size of a product.

Abstract translation: 本发明提供一种用于柴油发动机的高压燃油喷射管，具有优异的内压耐疲劳特性，抗振动疲劳特性和抗空气阻力特性以及板面抗瑕疵性能，并且可以使其重量轻且重量轻。 在高压燃料喷射管中，通过使用由变形诱导塑料型强度钢制成的集管来重复管延伸和热处理，然后进行用于沉积残余奥氏体的处理，并执行最终的延伸处理，并且接合部分 在不对产品尺寸进行完全退火的情况下进行模制和弯曲加工。

公开(公告)号：US20050005910A1

公开(公告)日：2005-01-13

申请号：US10616571

申请日：2003-07-10

Applicant: Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

Inventor： Masayoshi Usui ,  Kikuo Asada ,  Teruhisa Takahashi

IPC: F02M1/00 ,  F02M55/00 ,  F02M55/02

CPC classification number: F02M55/025 ,  F02M55/004

Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.

Abstract translation: 本发明提供一种用于柴油发动机的共轨喷射系统，具有优异的内压疲劳抗力特性，抗振性，耐气孔性，耐断层性等优点，能够轻量化。 主导轨由转变诱导塑料型强度钢制成。 在处理主管轨之后，通过热处理产生残余奥氏体，并且执行分支孔和主管轨侧流动通道交叉部分的应力集中的还原处理。 此外，优选通过自动补焊处理在主管轨的内表面上产生诱导塑性变形，并且留下压缩残余应力。

公开(公告)号：US06805144B2

公开(公告)日：2004-10-19

申请号：US10164168

申请日：2002-06-05

Applicant: Shoichiro Usui ,  Masayoshi Usui ,  Kikuo Asada

Inventor： Shoichiro Usui ,  Masayoshi Usui ,  Kikuo Asada

IPC: A45B2524

CPC classification number: A45B25/28 ,  A45B25/24 ,  A45B2019/008 ,  Y10S224/915

Abstract: An expansible and retractable protective cover is provided for umbrellas. The cover is mountable to align with the shaft of the umbrella and can be expanded parallel to the shaft of the umbrella to cover the umbrella after the umbrella has been folded into a closed condition. Thus, the cover contains moisture accumulated on the wet umbrella cloth from scattering.

Abstract translation: 为雨伞提供可扩展和可伸缩的保护罩。 盖可安装成与伞的轴对准，并且可以在伞被折叠成关闭状态之后平行于伞的轴扩展以覆盖伞。 因此，盖子包含积聚在湿雨伞上的水分散射。

公开(公告)号：US06263862B1

公开(公告)日：2001-07-24

申请号：US09114598

申请日：1998-07-13

Applicant: Kikuo Asada ,  Masayoshi Usui ,  Eiji Watanabe ,  Kazunori Takikawa ,  Ryuichi Kusanagi

Inventor： Kikuo Asada ,  Masayoshi Usui ,  Eiji Watanabe ,  Kazunori Takikawa ,  Ryuichi Kusanagi

IPC: F02M3704

CPC classification number: F16L41/14 ,  B21C37/292

Abstract: There is provided a common rail which can effectively restrict a generation of a tensile stress in a lower end inner peripheral edge portion of a branch hole by canceling by means of a compression residual stress and can improve an internal pressure fatigue strength in a branch pipe connecting portion, so that a secure and stable function can be obtained by having an excellent durability and preventing a fluid leakage due to a generation of the crack generation and a method of manufacturing a common rail in which a pressure application process is only added to a normal manufacturing process, no complex equipment is required, and a common rail having a high quality can be manufactured by a low cost without generating problems that an equipment cost is increased by an increase of the process and a productivity is reduced. In a method of manufacturing a common rail structured such that a branch hole communicating with an communication passage of a block rail and having a pressure receiving seat surface open to an outer portion is provided in at least one connecting hole portion provided in a peripheral wall portion in an axial direction of the block rail having the communication passage in a longitudinal inner portion, a pressing seat surface constituted by a connecting head portion provided in an end portion of a branch having a flow passage communicating with the communication passage is brought into contact with and engaged with the pressure receiving seat surface, and the connecting hole portion and a fastening nut previously assembled in the branch pipe are meshed with each other so as to fasten and connect together with pressing under a neck of the connecting head portion, a pressing force is applied to an axial direction of the connecting hole portion from an outer portion by a press method so as to generate a compression residual stress in the periphery of an open end portion of the communication passage of the block rail of the branch hole.

公开(公告)号：US6050611A

公开(公告)日：2000-04-18

申请号：US28703

申请日：1998-02-24

Applicant: Kikuo Asada

Inventor： Kikuo Asada

IPC: F02M55/02 ,  F16L19/02 ,  F16L41/08

CPC classification number: F02M55/025 ,  F16L41/08 ,  F16L41/14 ,  Y10S285/906

Abstract: There is provided a common rail which can reduce a maximum stress value generated in an inner peripheral edge portion of a lower end of a branch hole and can further improve an internal pressure fatigue strength. In the common rail comprising at least one branch hole provided on a peripheral wall portion of a main pipe rail having a communication passage inside an axial core, a pressure receiving seat surface communicating with a branch pipe having a communication passage communicating with the communication passage in a peripheral surface portion of the branch hole and open to an outer portion, thereby bringing a pressing seat surface portion constituted by a connection head portion disposed in an end portion of the branch pipe into contact and engaging therewith, and a joint portion integrally or separately provided in the main pipe rail and a nut previously assembled in the branch pipe end which are meshed with each other so as to be pressed under a neck portion of the connection head portion, thereby being fastened and connected, the main pipe rail has an outer peripheral surface substantially formed in a circular shape, and at least an adjacent portion to the branch hole of the inner peripheral surface is slightly projected or flattened so as to be formed in a vertical cross section of a not complete round shape.

Abstract translation: 提供一种能够减小在分支孔的下端的内周缘部产生的最大应力值的共轨，能够进一步提高内部压力疲劳强度。 在所述共轨中，包括至少一个分支孔，所述至少一个分支孔设置在具有在轴向芯内的连通通道的主管道的周壁部分上，压力接收座表面与具有与所述连通通道连通的连通通道的分支管连通， 所述分支孔的周面部分向外部开口，从而使由设置在所述分支管的端部中的连接头部构成的按压座表面部分与所述分支管的端部接触并与其接合，以及一体地或分开地接合部 设置在主管道中，并且预先组装在分支管端中的螺母彼此啮合，以便被压在连接头部的颈部下方，从而被紧固连接，主管轨具有外部 外周表面基本上形成为圆形，并且至少与内周边的分支孔相邻的部分 轮廓表面略微​​突出或变平，以形成为不完整圆形的垂直横截面。