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    • 3. 发明授权
    • Method for forming a common-rail injection system for diesel engine
    • 形成柴油机共轨喷油系统的方法
    • US07431781B2
    • 2008-10-07
    • US11227661
    • 2005-09-15
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • C21D8/10
    • F02M55/025F02M55/004
    • 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.
    • 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。
    • 5. 发明授权
    • Common-rail injection system for diesel engine
    • 柴油机共轨喷油系统
    • US07125051B2
    • 2006-10-24
    • US10616571
    • 2003-07-10
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • F16L5/00
    • F02M55/025F02M55/004
    • 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.
    • 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。
    • 7. 发明授权
    • 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
    • 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
    • US06397881B1
    • 2002-06-04
    • US09033681
    • 1998-03-03
    • Kikuo AsadaMasayoshi UsuiEiji WatanabeKazunori TakikawaRyuichi Kusanagi
    • Kikuo AsadaMasayoshi UsuiEiji WatanabeKazunori TakikawaRyuichi Kusanagi
    • F16K4300
    • B21C37/29F02M55/005F02M55/025Y10T137/6123
    • 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.
    • 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。
    • 9. 发明申请
    • Common-rail injection system for diesel engine
    • 柴油机共轨喷油系统
    • US20050005910A1
    • 2005-01-13
    • US10616571
    • 2003-07-10
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • Masayoshi UsuiKikuo AsadaTeruhisa Takahashi
    • F02M1/00F02M55/00F02M55/02
    • F02M55/025F02M55/004
    • 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.
    • 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。