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1. 发明专利

JP2004169568A Injection device 审中-公开
公开(公告)号：JP2004169568A
公开(公告)日：2004-06-17
申请号：JP2002333421
申请日：2002-11-18
申请人： Denso Corp , 株式会社デンソー
发明人： OGUMA YOSHITOMO , MIZUNO SHINGO
IPC分类号： F02M61/18 , F02M51/06 , F02M51/08 , F02M61/12 , F02M61/16
摘要： PROBLEM TO BE SOLVED: To provide an injection device having excellent liquid-tightness, slide property of a valve member, and homogeneity of spray when blocking a nozzle hole.
SOLUTION: A valve seat 24 on which an abutting part 32 of a needle 30 can be seated is formed on an inner peripheral face 22 of a valve body 20. When the abutting part 32 is seated on the valve seat 24, fuel injection from the nozzle hole 26 is shut off. A swirl hole 106 is formed by passing through a peripheral wall of the valve body 20 and extending linearly in the direction crossing axial line orthogonally along the direction of reciprocation and moving of the needle 30. A support part 28 formed on an inner peripheral wall of the valve body 20 is positioned on the upstream side more than the swirl hole 106 to support a slide part 34 of the needle 30 so as to reciprocate and move. The valve seat 24, the support part 28 supporting the needle 30 so as to reciprocate and move, and the swirl hole 106 forming swirl stream are constituted by the valve body 20 which is one member.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004232509A Liquid injection device 审中-公开
公开(公告)号：JP2004232509A
公开(公告)日：2004-08-19
申请号：JP2003019939
申请日：2003-01-29
申请人： Denso Corp , 株式会社デンソー
发明人： YAMAMOTO TATSUSUKE , OGUMA YOSHITOMO , MIZUNO SHINGO , WAKAMATSU YOSHIHISA
IPC分类号： F02M61/18 , F02M51/08
摘要： PROBLEM TO BE SOLVED: To provide a liquid injection device for atomizing a spray even when starting spraying.
SOLUTION: Six swirl holes 106 are formed by passing through a peripheral wall of a valve body 20 and linearly extending in the direction orthogonal to a valve axial line 200 of a needle 30 from an axial position where an annular passage 104 is formed. The outlet of the swirl hole 106 is opened to a swirl chamber 108. The swirl chamber 108 is an annular space surrounded by a slide part 32 of the needle 30, a non-slide part 34 and an inner peripheral wall 22 on the upstream side of a valve seat 24. The slide part 32 of the needle 30 is formed in a cylindrical shape and supported on a supporting part 28 of the valve body 20 so as to be reciprocatingly movable. The downstream side bottom 33 of the slide part 32 is disposed along the swirl hole 106 so as to be orthogonal to the valve axial line 200. The downstream side bottom 33 matches with the upstream end of the outlet opening peripheral edge of the swirl hole 106.
COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2005233178A Fuel injection valve 有权
标题翻译：燃油喷射阀
公开(公告)号：JP2005233178A
公开(公告)日：2005-09-02
申请号：JP2004326253
申请日：2004-11-10
申请人： Denso Corp , 株式会社デンソー
发明人： MIZUNO SHINGO , NISHIWAKI TOYOJI , OGUMA YOSHITOMO
IPC分类号： F02M51/06 , B05B1/30 , F02M51/00 , F02M61/10 , F02M61/16
CPC分类号： F02M51/0671 , F02M51/005 , F02M61/168 , Y10S239/12
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve which reduces changes of fuel injection characteristics when it is mounted on an engine. SOLUTION: An end 54 of a housing member 50, which forms a magnetic circuit on the side opposite to a holder, is not secured on a cylindrical member 11, so that the end 54 of the housing member 50 can be reciprocatingly moved relatively in the axial direction of the cylindrical member 11. Accordingly, when an injector 10 is mounted on the engine, even if the axial load acts on the housing member 50, deformation of the housing member 50 caused by the load is not transmitted to the cylindrical member 11. Consequently, before and after mounting the injector 10 on the engine, a change in distance between a fixed core 43 and a movable core 44 is reduced. Therefore, it is possible to reduce the changes of the fuel injection characteristics of the injector 10. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种当燃料喷射阀安装在发动机上时减少燃料喷射特性的变化的燃料喷射阀。解决方案：在与支架相反的一侧形成磁路的外壳构件50的端部54未固定在圆筒形构件11上，使得外壳构件50的端部54能够往复移动相对于圆柱形构件11的轴向方向。因此，当喷射器10安装在发动机上时，即使轴向载荷作用于壳体构件50，由负载引起的壳体构件50的变形也不会传递到因此，在将喷射器10安装在发动机上之前和之后，固定铁芯43和可动铁芯44之间的距离变化减小。因此，可以减少喷射器10的燃料喷射特性的变化。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004308594A Fuel injection valve 审中-公开
公开(公告)号：JP2004308594A
公开(公告)日：2004-11-04
申请号：JP2003105049
申请日：2003-04-09
申请人： Denso Corp , 株式会社デンソー
发明人： MIZUNO SHINGO , MIMURA EIJI
IPC分类号： F02M51/06 , F02M61/16
CPC分类号： F02M61/165
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of preventing a filter from dropping off therefrom with a simple structure without increasing processing man-hours.
SOLUTION: An injector 10 comprises a cylindrical body 40 which comprises a fuel channel 43 at the inner peripheral side thereof and a groove 45 continuously extending on the inner wall thereof. The filter 90 comprises a mesh 91 and a fitting part 92. The outer diameter of the fitting part 92 is larger than the inner diameter of the body 40 forming the fuel channel 43. When the filter 90 is inserted into the body 40, the fitting part 92 is fit in the groove 45 to join them together by snap-fitting. Accordingly, it is possible to prevent the filter 90 from dropping off from the body 40 with a simple structure. In addition, the grooves 45 and the fitting part 92 do not need high precision processing, so that they can be reduced in processing man-hours.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2002147316A INTERNAL COMBUSTION ENGINE AND FUEL INJECTOR USED FOR IT 失效
公开(公告)号：JP2002147316A
公开(公告)日：2002-05-22
申请号：JP2000348030
申请日：2000-11-15
申请人： DENSO CORP
发明人： MIZUNO SHINGO
IPC分类号： F02F1/24 , F02M61/14 , F02M61/16
摘要： PROBLEM TO BE SOLVED: To provide an engine capable of enhancing the sealing property of a combustion gas without increasing the pressure resistance assuring performance of a sealing member and provide a fuel injector used for it. SOLUTION: A through hole 21 for installing an injector 50 is formed in a cylinder head 20 connected to a cylinder block having a combustion chamber 2 formed. A space part 60 is formed between the cylinder head 20 and the injector 50. The inside of the space part 60 is so pressurized as to be set at half of the maximum pressure of the combustion chamber 2 by utilizing the difference of outside diameters between a flange part 52 and a nozzle part 54 when the injector 50 is mounted to the through hole 21. Accordingly, the first sealing member 55 is pushed in toward the combustion chamber, so that the intrusion of the combustion gas from the sealing part of the first sealing member 55 is prevented even if the pressure of the combustion chamber 2 is increased and the pressure resistance assuring performance of the first sealing member 55 does not need to be increased.

6. 发明专利

JP2002147311A FUEL INJECTOR 失效
公开(公告)号：JP2002147311A
公开(公告)日：2002-05-22
申请号：JP2000346351
申请日：2000-11-14
申请人： DENSO CORP
发明人： MIZUNO SHINGO
IPC分类号： F02M51/08 , F02M51/06
摘要： PROBLEM TO BE SOLVED: To provide a fuel injector capable of preventing the degradation of swirling force of a fuel and of facilitating the atomization of the fuel without increasing the number of swirl holes. SOLUTION: The fuel having flown in a swirl chamber 42 from the swirl holes 43 formed in a swirler 40 swirls in the swirl chamber 42 and forms a swirl. The fuel having flown in the swirl chamber 42 swirls around the neck part 56 of a valve needle 50. Since the outside diameter of the neck part 56 is formed smaller than those of a second cylinder part 54 and a valve head part 57, the fuel having flown in the swirl chamber 42 swirls around the neck part 56 without colliding with the circumferential part of the valve needle 50. Accordingly, the generation of a swirling component in the direction opposite to the primary one due to the collision of the fuel with the circumferential part of the valve needle 50 is prevented, so that the degradation of the swirling force of the fuel is prevented. The number of the swirl holes 43 does not need to be increased in conjunction with the reduction of diameters of the swirl holes 43.

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