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1. 发明授权

US06397881B1 METHOD FOR IMPROVING FATIGUE STRENGTH DUE TO REPEATED PRESSURE AT BRANCH HOLE PART IN MEMBER FOR HIGH PRESSURE FLUID, BRANCH HOLE PART OF MEMBER FOR HIGH PRESSURE FLUID FORMED BY THE METHOD, AND MEMBER FOR HIGH PRESSURE FLUID WITH BUILT-IN SLIDER HAVING THE BRANCH HOLE 失效
标题翻译：用于提高高压流体的分支孔部分中的重复压力的疲劳强度的方法，通过该方法形成的高压流体的分支孔部分，以及具有分支孔的具有内置滑动件的高压流体的部件
公开(公告)号：US06397881B1
公开(公告)日：2002-06-04
申请号：US09033681
申请日：1998-03-03
申请人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
发明人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
IPC分类号： F16K4300
CPC分类号： B21C37/29 , F02M55/005 , F02M55/025 , Y10T137/6123
摘要： 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.
摘要翻译：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。

2. 发明授权

US06263862B1 Common rail and method of manufacturing the same 失效
公开(公告)号：US06263862B1
公开(公告)日：2001-07-24
申请号：US09114598
申请日：1998-07-13
申请人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
发明人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
IPC分类号： F02M3704
CPC分类号： F16L41/14 , B21C37/292
摘要： 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.

3. 发明授权

US06408826B1 Common rail and method of manufacturing the same 失效
公开(公告)号：US06408826B1
公开(公告)日：2002-06-25
申请号：US09033541
申请日：1998-03-20
申请人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
发明人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
IPC分类号： F02M5502
摘要： There is provided a common rail which can effectively restrict a generation of a stress in a lower end inner peripheral edge portion of a branch hole 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 by the press is only added to a normal manufacturing process, no complex equipment is required, 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 the method of the invention, there is provided a method of manufacturing a common rail comprising at least one branch hole provided in an axial 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 metal fitting surrounding an outer peripheral portion of 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, wherein a pressing force is applied to the main pipe rail near the branch hole from an outer portion to a diametrical direction by a press method, thereby generating a compression residual stress at a portion near the open end portion of the communication passage of the main pipe rail in the branch hole.

4. 发明授权

US6126208A Common rail and method of manufacturing the same 失效
标题翻译：共轨和制造方法相同
公开(公告)号：US6126208A
公开(公告)日：2000-10-03
申请号：US33344
申请日：1998-03-02
申请人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
发明人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa , Ryuichi Kusanagi
IPC分类号： B21C37/29 , F02M55/00 , F02M55/02 , A16L41/08
CPC分类号： F02M55/025 , B21C37/29 , F02M55/005 , Y10T29/49442
摘要： A common rail includes a generally cylindrical peripheral wall having a communication passage extending axially therethrough. At least one branch hole extends through the peripheral wall and is aligned perpendicular to the axis of the common rail. The intersection of the branch hole with the outer surface of the main pipe rail defines an outwardly flared pressure receiving seat for receiving the connection head portion of a branch pipe. A sleeve nipple is welded or brazed to the outer surface of the main pipe rail and surrounds the branch hole. Inner surface regions of the peripheral wall surrounding the branch hole have a compression residual stress imparted thereto. The creation of the compression residual stress may cause a portion of the inner surface of the main pipe rail surrounding the branch hole to assume a non-cylindrical configuration.
摘要翻译：共轨包括具有沿轴向延伸穿过的连通通道的大致圆柱形周壁。至少一个分支孔延伸穿过周壁并且垂直于共轨的轴线对齐。分支孔与主管道的外表面的交叉部分形成一个向外扩张的压力接收座，用于接收支管的连接头部。套管接头焊接或钎焊到主管轨的外表面并围绕分支孔。围绕分支孔的周壁的内表面区域具有赋予的压缩残余应力。压缩残余应力的产生可能导致围绕分支孔的主管轨道的内表面的一部分呈现非圆柱形构型。

5. 发明授权

US06213095B1 Common rail and method of manufacturing the same 失效
标题翻译：共轨和制造方法相同
公开(公告)号：US06213095B1
公开(公告)日：2001-04-10
申请号：US09033816
申请日：1998-03-03
申请人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa
发明人： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa
IPC分类号： F02M4100
CPC分类号： B21C37/29 , F02M55/025
摘要： A common rail is provided for promoting inner pressure fatigue strength at location in proximity to a branch pipe. The common rail includes a main pipe rail with a main flow path. At least one boss in provided on the peripheral wall and includes a branch hole communicating the main flow path. The branch pipe is provided with a connecting head that has a pressing face at and end of the branch pipe. The pressing face of the branch pipe is urged into a pressure receiving seat of the boss. A compressive residual stress is provided at location in the peripheral wall where the main flow path of the main pipe rail communicates with the branch hole. The compressive residual stress increases the pressure fatigue strength by substantially canceling tensile stress.
摘要翻译：提供了一种用于在分支管附近的位置处提高内部压力疲劳强度的共轨。共轨包括具有主流路的主管道。至少一个凸台设置在周壁上并且包括连通主流路的分支孔。分支管设置有连接头，该连接头在分支管的端部和末端具有按压面。分支管的按压面被推入凸台的受压座。在主管道的主流路与分支孔连通的周壁的位置设有压缩残余应力。通过基本上消除拉伸应力，压缩残余应力增加了压力疲劳强度。

6. 发明授权

US06317975B1 Method of manufacturing common rails 失效
标题翻译：共轨制造方法
公开(公告)号：US06317975B1
公开(公告)日：2001-11-20
申请号：US09499838
申请日：2000-02-07
申请人： Kikuo Asada , Ryuichi Kusanagi
发明人： Kikuo Asada , Ryuichi Kusanagi
IPC分类号： B23P1500
CPC分类号： F02M55/025 , B21C37/29 , B21K3/00 , Y10T29/49231 , Y10T29/49412 , Y10T29/49416
摘要： A method is provided for manufacturing common rails, such as a high-pressure fluid manifold or a block rail that may be use in an accumulator fluid injection system. The method includes providing a main tubular rail with a flow passage extending in an axial direction. A bottomed lower hole is formed generally transverse to the axial flow passage. A pressing force is applied to the bottomed lower hole to generate a residual compressive stress in a circumferential part of the end portion of the bottom hole. The bottom lower hole then is made to communicate with the flow passage in the main rail. Defects that may have been caused by the application of the pressing force then are cut off. The removal of the defects improves an internal pressure fatigue strength, achieves high durability and ensures freedom from leakage.
摘要翻译：提供了一种用于制造公共轨道的方法，例如可用于蓄液器喷射系统中的高压流体歧管或块轨道。该方法包括提供主管状轨道，其具有在轴向方向上延伸的流动通道。大致横向于轴向流动通道形成有底的下孔。向底部的下孔施加按压力，在底孔的端部的周向部分产生残留的压缩应力。然后使底部下孔与主轨道中的流动通道连通。可能由施加按压力引起的缺陷被切断。去除缺陷会提高内部压力疲劳强度，实现高耐久性，并确保无泄漏。

7. 发明授权

US07431781B2 Method for forming a common-rail injection system for diesel engine 有权
标题翻译：形成柴油机共轨喷油系统的方法
公开(公告)号：US07431781B2
公开(公告)日：2008-10-07
申请号：US11227661
申请日：2005-09-15
申请人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
发明人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
IPC分类号： C21D8/10
CPC分类号： F02M55/025 , F02M55/004
摘要： 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.
摘要翻译：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。

8. 发明申请

US20060005599A1 Common-rail injection system for diesel engine 有权
公开(公告)号：US20060005599A1
公开(公告)日：2006-01-12
申请号：US11227661
申请日：2005-09-15
申请人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
发明人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
IPC分类号： B21D3/00
CPC分类号： F02M55/025 , F02M55/004
摘要： 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.

9. 发明授权

US07125051B2 Common-rail injection system for diesel engine 有权
标题翻译：柴油机共轨喷油系统
公开(公告)号：US07125051B2
公开(公告)日：2006-10-24
申请号：US10616571
申请日：2003-07-10
申请人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
发明人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
IPC分类号： F16L5/00
CPC分类号： F02M55/025 , F02M55/004
摘要： 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.
摘要翻译：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。

10. 发明申请

US20050127665A1 High-pressure fuel pipe for diesel engines 审中-公开
标题翻译：柴油机高压燃油管
公开(公告)号：US20050127665A1
公开(公告)日：2005-06-16
申请号：US11012713
申请日：2004-12-15
申请人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
发明人： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
IPC分类号： F02M55/02 , F02M61/16 , F16L9/02 , F16L45/00
CPC分类号： F02M55/025
摘要： 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.
摘要翻译：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。

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