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1. 发明申请

US20190024618A1 FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20190024618A1
公开(公告)日：2019-01-24
申请号：US15755726
申请日：2016-06-21
申请人： DENSO CORPORATION
发明人： Shinsuke YAMAMOTO , Shinobu OIKAWA , Tomoji MATSUKAWA , Moriyasu GOTOH , Eiji ITOH
IPC分类号： F02M51/06 , F02M61/16
CPC分类号： F02M51/0664 , F02M51/06 , F02M51/0607 , F02M51/0689 , F02M61/161 , F02M61/18 , F02M2200/502
摘要： An inner side wall surface of a gap forming member, which is opposed to a flange outer wall surface of a flange of a needle, is slidable relative to the flange outer wall surface. Also, an outer side wall surface of the gap forming member, which is opposed to a stationary core inner wall surface of a stationary core, is slidable relative to the stationary core inner wall surface. The flange outer wall surface and the outer side wall surface are curved to project in a radially outer direction of a housing in a cross section thereof taken along an imaginary plane, which includes an axis of the housing.

2. 发明申请

US20160333838A1 FUEL INJECTION VALVE 审中-公开
标题翻译：燃油喷射阀
公开(公告)号：US20160333838A1
公开(公告)日：2016-11-17
申请号：US15111294
申请日：2015-02-04
申请人： DENSO CORPORATION
发明人： Shinsuke YAMAMOTO , Eiji ITOH , Eiji MIMURA
IPC分类号： F02M61/14 , F02M51/06
CPC分类号： F02M61/14 , F02M51/0685 , F02M2200/858
摘要： A fuel injection valve includes a housing having a nozzle hole, a valve seat, and a fuel passage; a needle that is accommodated in the housing to be capable of reciprocating in an axial direction of the housing and that opens or closes the nozzle hole; a coil; a fixed core; a movable core; a shift permitting member that is provided between the housing and an internal-combustion engine to permit a shift of an attachment position at time of attachment of the housing and the engine; and a friction reducing part that is provided between the engine and the shift permitting member to reduce friction between the engine and the shift permitting member. The friction reducing part permits displacement of the housing in a direction perpendicular to the axial direction of the housing.
摘要翻译：燃料喷射阀包括具有喷嘴孔，阀座和燃料通道的壳体; 容纳在所述壳体中以能够沿所述壳体的轴向往复运动并且打开或关闭所述喷嘴孔的针; 线圈固定核心; 可动核心; 设置在所述壳体和内燃机之间的换档许可构件，以允许在所述壳体和所述发动机的附接时的安装位置的移动; 以及设置在所述发动机和所述换档许可部件之间以减小所述发动机和所述换挡许可部件之间的摩擦的摩擦减小部件。摩擦减小部件允许壳体沿垂直于壳体轴向的方向移动。

3. 发明申请

US20190242347A1 FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20190242347A1
公开(公告)日：2019-08-08
申请号：US16388929
申请日：2019-04-19
申请人： DENSO CORPORATION
发明人： Shinobu OIKAWA , Tomoji MATSUKAWA , Shinsuke YAMAMOTO , Moriyasu GOTOH , Eiji ITOH
IPC分类号： F02M51/06 , F02M61/18 , F02M61/10
CPC分类号： F02M51/0675 , F02M51/06 , F02M51/061 , F02M51/0653 , F02M51/0671 , F02M61/10 , F02M61/18
摘要： A gap forming member has: a plate portion that is placed on an opposite side of a needle, which is opposite from a valve seat; and an extending portion that is formed to extend from the plate portion toward the valve seat, while an opposite end part of the extending portion, which is opposite from the plate portion, is contactable with a movable core. A first wall surface of the gap forming member, which is a wall surface opposed to an outer wall of the flange, is slidable relative to the outer wall of the flange, and a second wall surface of the gap forming member, which is a wall surface opposed to an inner wall of a stationary core, forms a radial gap, which is a gap in a radial direction, between the second wall surface and the inner wall of the stationary core.

4. 发明申请

US20170226975A1 FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20170226975A1
公开(公告)日：2017-08-10
申请号：US15519349
申请日：2015-11-02
申请人： DENSO CORPORATION
发明人： Shinsuke YAMAMOTO , Eiji ITOH , Kouichi MOCHIZUKI
IPC分类号： F02M51/06 , F02M61/10
CPC分类号： F02M51/0653 , F02D41/20 , F02D41/402 , F02D2041/2048 , F02D2041/2058 , F02M51/0685 , F02M61/10 , Y02T10/44
摘要： A current control unit in a fuel injection device controls a magnitude of a current flowing through a coil during single energization. A current Ip1 flows once a signal input to the current control unit is turned ON at time t11. As a result, a movable core and a needle abut against each other with a lift amount increased at time t12, and then the needle is separated from a valve seat and pre-injection is performed. At time t13, which follows the pre-injection, the needle and movable core lift amount becomes a lift amount D1 at a time when the needle and the valve seat abut against each other, and temporary valve closing occurs. At time t14, which follows time t13, currents Ix1 and Im1 larger than the current Ip1 are caused to flow through the coil, and then main injection is performed with the needle and movable core lift amount turned into a lift amount D2 larger than the lift amount D1. Therefore, fuel injection can be performed twice during the single energization.

5. 发明申请

US20150132166A1 HIGH-PRESSURE PUMP 审中-公开
标题翻译：高压泵
公开(公告)号：US20150132166A1
公开(公告)日：2015-05-14
申请号：US14539329
申请日：2014-11-12
申请人： DENSO CORPORATION
发明人： Hideaki UKAI , Eiji ITOH , Hiroshi INOUE
IPC分类号： F02M37/04 , F02M31/20 , F04B53/08 , F02M37/00
CPC分类号： F04B53/08 , F02M31/20 , F02M37/0052 , F02M59/442 , F02M63/0265 , F04B53/04
摘要： A high-pressure pump includes a plunger, a cylinder, a pressuring chamber, a pump body, a main fuel chamber, an auxiliary fuel chamber and a return passage. The cylinder slidably houses the plunger therein. Fuel is pressurized inside the pressurizing chamber by sliding movement of the plunger. The pump body houses the cylinder and has an end surface on an opposite side of the pump body relative to the pressurizing chamber in an axial direction. The main fuel chamber is disposed inside the pump body into which fuel is supplied. The auxiliary fuel chamber has a side defined by one end of the cylinder on an opposite side of the cylinder relative to the pressurizing chamber. The return passage is disposed inside the pump body and is in fluid communication with an external cooling unit. Fuel leaking out from the pressurizing chamber through a clearance between the cylinder and the plunger is collected inside the auxiliary fuel chamber, and the collected fuel flows toward the external cooling unit through the return passage.
摘要翻译：高压泵包括柱塞，气缸，加压室，泵体，主燃料室，辅助燃料室和回流通道。圆筒可滑动地将柱塞容纳在其中。燃料通过柱塞的滑动运动在加压室内加压。泵体容纳气缸，并且在轴向相对于加压室的相对侧具有端面。主燃料室设置在供给燃料的泵体内。辅助燃料室具有由气缸的一端限定在气缸相对于加压室的相反侧的一侧。返回通道设置在泵体内部并与外部冷却单元流体连通。从加压室通过气缸和柱塞之间的间隙泄漏的燃料被收集在辅助燃料室内部，并且所收集的燃料通过返回通道流向外部冷却单元。

6. 发明申请

US20180100478A1 VALVE DEVICE AND DEVICE FOR MANUFACTURING VALVE DEVICE 审中-公开
公开(公告)号：US20180100478A1
公开(公告)日：2018-04-12
申请号：US15567699
申请日：2016-04-08
申请人： DENSO CORPORATION
发明人： Kouichi MOCHIZUKI , Eiji ITOH
IPC分类号： F02M61/18 , F02M61/16 , F02M61/20 , F02M55/00
CPC分类号： F02M61/188 , F02M21/0278 , F02M51/06 , F02M51/0671 , F02M55/008 , F02M61/16 , F02M61/161 , F02M61/165 , F02M61/168 , F02M61/20 , F02M2200/50 , F02M2200/505
摘要： A valve device includes a valve housing having a hole and a seat provided on a periphery of the hole, a tubular member, a valve member opening the hole when moving away from the seat and closing the hole when being in contact with the seat, an urging member urging the valve member in a valve closing direction or a valve opening direction, an intermediate member being immovably relative to the tubular member, an adjusting member having a communication passage and configured to adjust an urging force of the urging member via the intermediate member according to a position relative to the tubular member when fixed to the tubular member, and a swelling member provided between the intermediate member and the tubular member and configured to be in contact with the intermediate member and the tubular member by swelling when touched with a fluid flowing through the hole.

7. 发明申请

US20140197251A1 FUEL INJECTOR AND FUEL INJECTION DEVICE USING THE SAME 有权
标题翻译：燃料喷射器和燃料喷射装置
公开(公告)号：US20140197251A1
公开(公告)日：2014-07-17
申请号：US14152541
申请日：2014-01-10
申请人： DENSO CORPORATION
发明人： Keita IMAI , Eiji ITOH
IPC分类号： F02M51/06
CPC分类号： F02M51/0664 , F02M51/0675 , F02M61/205
摘要： A fuel injector includes a valve body moved together with a movable core and opening an injection port, and an elastic-force applying portion being elastically deformable according to a movement of the valve body to apply an elastic force to the valve body in a valve-closing direction. An elastic coefficient of the elastic-force applying portion is set to meet a condition that Ffc−Ffo≦L×K. In this case, a fuel-pressure valve-closing force of when the valve body is closed is referred to as Ffc, and the fuel-pressure valve-closing force of when the valve body is completely opened is referred to as Ffo. A movement distance of the valve body from a time point that the valve body is closed to a time point that the valve body is completely opened is referred to as L. The elastic coefficient is referred to as K.
摘要翻译：燃料喷射器包括与可动铁心一起移动并打开喷射口的阀体，以及弹性力施加部分，其可根据阀体的运动而弹性变形，以在阀体中施加弹性力至阀体，关闭方向。弹性力施加部的弹性系数被设定为满足Ffc-Ffo＆lt; lE; L×K的条件。在这种情况下，将阀体关闭时的燃料压力阀关闭力称为Ffc，将阀体完全打开时的燃料压力阀关闭力称为Ffo。阀体从阀体关闭的时间点到阀体完全打开的时间点的移动距离称为L.弹性系数称为K.

8. 发明申请

US20140175194A1 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：燃油喷射阀内燃机
公开(公告)号：US20140175194A1
公开(公告)日：2014-06-26
申请号：US14140693
申请日：2013-12-26
申请人： DENSO CORPORATION
发明人： Keita IMAI , Eiji ITOH , Hiroaki NAGATOMO
IPC分类号： F02M51/06
CPC分类号： F02M51/0614 , F02M51/0685 , F02M2200/08
摘要： A stationary core includes a holding hole that receives and holds a portion of the magnetic spring, which is located on a valve opening side. A solenoid device includes a magnetic yoke that extends in an axial direction and has an axial extent, which overlaps with an entire axial extent of the holding hole. The magnetic yoke has a predetermined portion, which reduces an amount of the magnetic flux that passes through the magnetic yoke in a radial direction in comparison to the rest of the magnetic yoke.
摘要翻译：固定铁心包括容纳并保持位于阀开口侧的一部分磁性弹簧的保持孔。螺线管装置包括：磁轭，其在轴向方向上延伸并且具有与保持孔的整个轴向长度重叠的轴向延伸。磁轭具有与磁轭的其余部分相比径向减小通过磁轭的磁通量的预定部分。

9. 发明申请

US20190338739A1 FUEL INJECTION VALVE 审中-公开
公开(公告)号：US20190338739A1
公开(公告)日：2019-11-07
申请号：US16517725
申请日：2019-07-22
申请人： DENSO CORPORATION
发明人： Tomoji MATSUKAWA , Eiji ITOH , Shinsuke YAMAMOTO , Kouichi MOCHIZUKI
IPC分类号： F02M61/16 , F02M63/00 , F02M51/06
摘要： A fuel injection valve includes: a circular plate portion that is abuttable against an end surface of a needle opposite from a valve seat while the needle being provided to open and close an injection hole upon lifting and seating of the needle relative to the valve seat; and a tubular portion that extends from the circular plate portion toward the valve seat and has an end part, which is opposite from the circular plate portion and is abuttable against a movable core second contact surface of a movable core opposite from the valve seat. In a state where the circular plate portion abuts against the needle, and the tubular portion abuts against the movable core, a gap is formed between a flange member end surface of a flange of the needle and a movable core first contact surface of the movable core opposite from the valve seat.

10. 发明申请

US20180238282A1 FUEL INJECTION DEVICE 审中-公开
公开(公告)号：US20180238282A1
公开(公告)日：2018-08-23
申请号：US15752278
申请日：2016-06-21
申请人： DENSO CORPORATION
发明人： Shinsuke YAMAMOTO , Shinobu OIKAWA , Tomoji MATSUKAWA , Moriyasu GOTOH , Eiji ITOH
IPC分类号： F02M61/10 , F02M51/06 , F02M61/18 , F02M61/20
CPC分类号： F02M61/10 , F02M51/061 , F02M51/0671 , F02M51/0675 , F02M51/0685 , F02M61/1886 , F02M61/20
摘要： A movable core is movable relative to a needle main body of a needle. A stationary core is placed on an opposite side of the movable core, which is opposite from a valve seat. A spring is operable to urge the needle and the movable core toward the valve seat. A spring seat is shaped into a ring form and is placed on a radially outer side of the needle main body at the valve seat side of the movable core. The spring is placed between the movable core and the spring seat and is operable to urge the movable core toward the stationary core. A guide is placed on the valve seat side of the movable core in an inside of a housing. An inner wall of the guide is slidable relative to an outer wall of the spring seat to guide reciprocation of the needle.

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