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1. 发明专利

JPH11303705A FLUID CONTROL VALVE 失效
公开(公告)号：JPH11303705A
公开(公告)日：1999-11-02
申请号：JP17439498
申请日：1998-06-22
申请人： NIPPON SOKEN , DENSO CORP
发明人： SAITO KIMITAKA , KOHAMA TOKIO , NAKAJIMA TATSUSHI , SAWADA YUKIO
IPC分类号： F02M51/00 , F02M51/04 , F02M51/06 , H01L41/09 , H01L41/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid control valve excellent in responsiveness of a valve member. SOLUTION: A permanent magnet 21 is annularly formed, to be fitted to the outer periphery of a valve body 12 so as to surround a ball valve 17. The ball valve 17 seated in a valve seat 12b or a valve seat 14a is attracted to each valve seat by magnetic force of the permanent magnet 21. When pulse voltage is applied to a piezoelectric element 20, it is extended/contracted, and a shock is generated by this extension/contraction. When the shock generated in the piezoelectric element 20 is propagated from a passage member 13 to the ball valve 17 via the valve body 12, the ball valve 17 is kicked out from one of the valve seat 12b or the valve seat 14a to face toward the other. Since the ball valve 17 is moved by a shock, high opening/closing responsiveness of the ball valve 17 is obtained. Since a current carried in the piezoelectric element 20 is turned on only when a shock is generated, a heating value generated in a fuel injection valve 1 is small, and a temperature rise therein is suppressed.

2. 发明专利

JP2009162239A Fuel injection valve and internal combustion engine 审中-公开
标题翻译：燃油喷射阀和内燃机
公开(公告)号：JP2009162239A
公开(公告)日：2009-07-23
申请号：JP2009107952
申请日：2009-04-27
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： AOKI FUMIAKI , IMATAKE NOBUO , SAITO KIMITAKA , SAWADA YUKIO
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To permit fuel to equally flow in to nozzle holes, in a fuel injection valve having the inner and outer double nozzle holes formed in an orifice plate.
SOLUTION: A fuel flow passage 1a is formed to have a shape of which diameter is expanded in the position immediately above the orifice plate 2, and on the upstream face of the orifice plate 2, a plurality of partition walls 6 for defining an upper space of the upstream face in the approximately circumferential direction of the orifice plate 2 are protruded. Since the plurality of nozzle holes 21, 22 are arranged to be dispersed in positions sandwiched between the partition walls 6 on the orifice plate 2, a fuel flow from an annular clearance between a needle 5 and a seat part 4b is distributed into the direction of the nozzle hole 21 side on the inner peripheral side and the direction of the nozzle hole 22 on the outer peripheral side, so as to make the fuel equally flow in to the nozzle holes 21, 22.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：在具有形成在孔板中的内部和外部双喷嘴孔的燃料喷射阀中，允许燃料均等地流入喷嘴孔。解决方案：燃料流路1a形成为在孔板2正上方的位置上直径扩大的形状，并且在孔板2的上游面上形成有多个分隔壁6，用于限定孔板2的大致圆周方向的上游面的上部空间突出。由于多个喷嘴孔21,22被布置成分散在孔板2上的分隔壁6之间的位置，所以从针5和座部4b之间的环形间隙的燃料流分布在内周侧的喷嘴孔21侧和外周侧的喷嘴孔22的方向，使燃料均等地流入喷嘴孔21,22。版权所有（C）2009 ，JPO＆INPIT

3. 发明专利

JPH11107890A FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11107890A
公开(公告)日：1999-04-20
申请号：JP27456797
申请日：1997-10-07
申请人： NIPPON SOKEN , DENSO CORP
发明人： IMATAKE NOBUO , HARADA AKINORI , SAITO KIMITAKA , KOHAMA TOKIO , SAWADA YUKIO
IPC分类号： F02M45/00 , F02D41/04 , F02D41/38 , F02M51/06 , F02M51/08 , F02M53/04 , F02M61/18 , F02M69/00 , F02M69/04
摘要： PROBLEM TO BE SOLVED: To change an injection rate in an injection period so that fuel injection for an internal combustion engine is effected at an optimum timing, for example, in any operation state. SOLUTION: A nozzle hole plate 31 is attached in a manner to cover the nozzle hole 36 of a fuel injection valve 30 and the effective diameter of an nozzle hole 34 drilled therein is changed. Concretely, the nozzle hole plate 31 is formed as a piezoelectric element and by expanding or contracting the nozzle hole plate 31 through application of a voltage between electrodes 32a and 32b arranged thereabove and therebelow, the nozzle hole 34 formed in the nozzle hole plate 31 is expanded and contracted. When occasion demands, the nozzle hole plate 31 is constituted in a manner to be divided into a plurality of sections. By selectively expanding and contracting respective sections, only the nozzle hole 34 formed in the section is expanded and contracted, and the shape (an injection angle) of spray is varied and a plurality of sprays are collided with each other. The nozzle hole plate 31 can be formed as a heat generating element.

4. 发明专利

JP2002115628A FUEL INJECTION VALVE AND INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002115628A
公开(公告)日：2002-04-19
申请号：JP2000308732
申请日：2000-10-10
申请人： NIPPON SOKEN , DENSO CORP
发明人： AOKI FUMIAKI , IMATAKE NOBUO , SAITO KIMITAKA , SAWADA YUKIO
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve having inner and outer double nozzle holes formed in an orifice plate, permitting a fuel to equally flow therein. SOLUTION: A fuel flow passage 1a is formed to be increased in diameter right on the orifice plate 2, and a nozzle hole 21 on the inner periphery side and a nozzle hole 22 on the outer periphery side are arranged on the orifice plate 2 at its inner and outer double circles coaxial with a needle 5. D1

5. 发明专利

JP2006153004A Fuel injection valve 有权
标题翻译：燃油喷射阀
公开(公告)号：JP2006153004A
公开(公告)日：2006-06-15
申请号：JP2005275268
申请日：2005-09-22
申请人： Denso Corp , 株式会社デンソー
发明人： OMURA HIDEKAZU , YAMASHITA YOSHINORI , TOMIITA YUKIO , SAWADA YUKIO
IPC分类号： F02M61/18
CPC分类号： F02M61/1853
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve reducing a fuel chamber while promoting atomization of fuel.
SOLUTION: An inner circumference wall surface 50a of a spacer 50 forming the fuel chamber 52 projects from radially outside to inside, namely toward injection holes 411a, 411b, 411c, 411d in the inner circumference side. If a predetermined distance between injection holes 412a-412h on an outer circumference side and the inner circumference wall surface 50a of the spacer 50 is secured, turbulence of fuel increased by collision of fuels flowing in each injection hole 412a-412h is maintained. Consequently, a space between each injection hole 412a-412h on an outer circumference side becomes dead volume not contributing to collision of fuel. Distance between each injection hole 412a-412h and the inner circumference wall surface 50a can be maintained and dead volume of the fuel chamber 52 is reduced by projecting the inner circumference wall surface 50a to an inner circumference side. Consequently, dead volume of the fuel chamber 52 can be reduced while keeping atomization characteristics of fuel.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种减少燃料室的燃料喷射阀，同时促进燃料的雾化。解决方案：形成燃料室52的间隔件50的内周壁面50a从径向外侧突出到内周侧的喷射孔411a，411b，411c，411d。如果确保在外周侧的喷射孔412a-412h和隔离物50的内周壁面50a之间的预定距离，则维持燃料的湍流，这是因为在每个喷射孔412a-412h中流动的燃料的碰撞而增加。因此，在外周侧的每个喷射孔412a-412h之间的空间变得不会导致燃料碰撞的死体积。通过将内周壁面50a突出到内周侧，可以保持喷射孔412a-412h和内周壁面50a之间的距离，从而能够减小燃料室52的死体积。因此，可以减少燃料室52的死体积，同时保持燃料的雾化特性。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2000038974A FLUID INJECTION NOZZLE 失效
公开(公告)号：JP2000038974A
公开(公告)日：2000-02-08
申请号：JP20630598
申请日：1998-07-22
申请人： DENSO CORP
发明人： SAWADA YUKIO , MOCHIZUKI KOICHI
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To provide a fluid injection nozzle capable of injecting fluid uniformly in a wide range with its configuration made simple. SOLUTION: Six injection holes 15a are formed over an injection plate 15 in such a way as to be disposed to the identical circumference around the axial line of a needle valve 20. Each injection hole 15a is formed up while being inclined by a different angle with respect to the axial line of a fuel injection valve, and as the whole, the injection holes are directed to the direction inclined with respect to the axial line of the fuel injection valve. Here in this place, the thickness of the injection hole plate is t, the diameter of each injection hole 15a is d, and the widening angle of a spray injected out of each injection hole is ω. In this case, if t/d is changed, the value of ω is increased to the extent that sprays injected out of the respective injection holes 15a are overlapped with one another in a range of t/d

7. 发明专利

JPH10122089A FUEL SUPPLY DEVICE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH10122089A
公开(公告)日：1998-05-12
申请号：JP27237096
申请日：1996-10-15
申请人： DENSO CORP
发明人： AKUTAGAWA MASAKI , SAWADA YUKIO
IPC分类号： F02M51/06 , F02M51/00 , F02M55/00 , F02M55/02 , F02M69/04 , F02M69/46
摘要： PROBLEM TO BE SOLVED: To provide a low-cost fuel supply device which has a simple connection structure for its injector and a feeder and prevents its injector from being pulled out of a fuel distribution pipe, and a manufacture thereof. SOLUTION: A clip 50 is fitted at its pair of parallel claws 52a and 53a into two grooves 23a and 21a formed in an injector 20, and at its window part onto a projection formed on a fuel distribution pipe. The clip 50 is thus prevented from being pulled out of the injector 20 axially as well as out of the fuel distribution pipe. Even if a wire harness 31 is being pulled out of a feeder connector 23, a lock plate 51 checks a sealing member 33 to prevent the wire harness 31 from being pulled out. The injector 20 is also prevented from being pulled out of the fuel distribution pipe.

8. 发明专利

JPH09264226A FUEL DISTRIBUTION PIPE 失效
公开(公告)号：JPH09264226A
公开(公告)日：1997-10-07
申请号：JP7615796
申请日：1996-03-29
申请人： DENSO CORP
发明人： AKUTAGAWA MASAKI , SAWADA YUKIO
IPC分类号： F02M51/02 , F02M51/00 , F02M55/02 , F02M69/46
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive fuel distribution pipe in which a connection structure between an injector and an electric supply line is simplified. SOLUTION: A fuel distribution pipe 10 constructed of a cylinder part 11, a fuel supply port 14, a guide part 15, and an opening part 16, is integrally molded of a synthetic resin or a synthetic resin group material which is excellent in an insulating property and in a heat insulating property. By means of the guide part 15, an electric supplying terminal 32 and an electric receiving terminal 21 are guided when the electric supplying terminal 32 and the electric receiving terminal 21 are inserted into a through hole 15a from the opposite directions respectively, and inside the guide part 15, the electric supplying terminal 32 and the electric receiving terminal 21 are electrically connected together. As the guide part 15 is formed integrally with a cylindrical part 11, separate production of a connector, which connecting the electric supplying terminal 32 and the electric receiving terminal 21 together, in addition to production of the fuel distribution pipe is not required, so that production man-hours are reduced and a production cost is lowered.

9. 发明专利

JP2004003519A Fluid injection nozzle 有权
公开(公告)号：JP2004003519A
公开(公告)日：2004-01-08
申请号：JP2003306886
申请日：2003-08-29
申请人： Denso Corp , 株式会社デンソー
发明人： HARADA AKINORI , SAWADA YUKIO
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To provide a fluid injection nozzle capable of atomizing a spray.
SOLUTION: A recessed part 15 is formed in an end part on a fuel injection side of a valve body 13. A flat and disc-like fuel chamber 51 parallel along a nozzle hole plate 25 is formed between the recessed part 15 and the nozzle hole plate 25. The fuel chamber 51 is formed just above fuel upstream side of nozzle holes 25a, 25b, 25c, 25d by spreading in a predetermined scope around the nozzle holes. On the nozzle hole plate 25, four nozzle holes 25a, 25b, 25c, 25d are formed on the same circumference. The nozzle holes 25a, 25b, 25c, 25d have the same diameter so as to leave a central axis 26 of the nozzle hole plate 25 toward the direction of fuel injection. Each nozzle hole is covered with a bottom face 15a of the recessed part 15 and is opened in an outer fuel chamber 53. Since an interval between the nozzle hole 25a and the nozzle hole 25b which inject fluid in the same direction is apart from an interval between the nozzle hole 25c and the nozzle hole 25d, it is possible to prevent the collision of liquid columns of fuel injected from the nozzle holes just below the nozzle holes.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JPH1193807A FLUID INJECTION NOZZLE 失效
公开(公告)号：JPH1193807A
公开(公告)日：1999-04-06
申请号：JP25823197
申请日：1997-09-24
申请人： DENSO CORP
发明人： SAWADA YUKIO , MORI YUKIO , TANI TAISHIN
IPC分类号： F02M61/18 , B05B1/30
摘要： PROBLEM TO BE SOLVED: To provide a fluid injection nozzle which promotes atomization of fluid vapor. SOLUTION: A substantially disc-like fuel chamber 35 is determined by a tip surface 25a of a needle valve 25, an inner wall surface 31 of a valve body 30, and a surface 33 of an orifice plate 32 opposed to the needle valve 25. Projections 33a are projected from the surface 33, on an outer peripheral side of an orifice 34. Fuel is flowed into the fuel chamber 35, from a gap between an abutting portion 25c and a valve seat 31a, and struck against the projections 33a formed on the surface 33. The fuel is flowed between the projections 33a while being bent, so that turbulance is generated in the fuel flow. When the fuel containing turbulance is injected from the orifice 34, atomization is promoted in respect to the injected fuel vapor, by the energy of turbulance. Since the fuel vapor is thus easily mixed with air within a wide range for increasing combustion efficiency of fuel, it is possible to reduce poisonous matters discharged into exhaust gas and suppress fuel consumption.

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