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公开(公告)号：US20200224608A1
公开(公告)日：2020-07-16
申请号：US16828051
申请日：2020-03-24
申请人： DENSO CORPORATION
发明人： Keita KURIGAMI , Shinichiro KOSHIMOTO , Yoshihito SUZUKI , Hiroshi INOUE , Tatsumi OGURI , Keigo OHATA , Takayuki MAKIHARA , Taiki KUKITA
摘要： A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.
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公开(公告)号：US20160369791A1
公开(公告)日：2016-12-22
申请号：US15188118
申请日：2016-06-21
申请人： DENSO CORPORATION
发明人： Shinichiro KOSHIMOTO , Kaoru ODA
IPC分类号： F04B53/10 , F04B17/03 , F04B53/16 , F04B53/14 , F02M37/04 , F02M37/08 , F04B9/04 , F04B17/05
CPC分类号： F04B53/10 , F02M37/043 , F02M37/08 , F02M63/005 , F02M63/0225 , F04B9/042 , F04B17/03 , F04B17/05 , F04B49/08 , F04B49/24 , F04B53/14 , F04B53/16 , F16K17/04
摘要： A high pressure pump includes a pressurization portion, a discharge portion, a body portion, a valve member, a holding member, and an urging member. The body portion includes a relief passage defining portion, an inlet defining portion, a valve seat, and an outlet defining portion. An outlet of the body portion is located apart in a separation direction from an inlet of the body portion. The valve member includes an outer wall surface closing the outlet of the body portion. When the valve member contacts the valve seat, a first distance between an edge portion of the outer wall surface of the valve member facing in a contact direction and an edge portion of the outlet defining portion facing in the contact direction is larger than a second distance between the valve member and the holding member.
摘要翻译： 高压泵包括加压部，排出部，主体部，阀部件，保持部件和推压部件。 主体部分包括释放通道限定部分，入口限定部分，阀座和出口限定部分。 主体部分的出口沿主体部分的入口沿分离方向分开。 阀构件包括封闭主体部分的出口的外壁表面。 当阀构件接触阀座时，阀构件的面向接触方向的外壁表面的边缘部分与出口限定部分在接触方向上面对的边缘部分之间的第一距离大于第二距离 在阀构件和保持构件之间。
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公开(公告)号：US20140241924A1
公开(公告)日：2014-08-28
申请号：US14192281
申请日：2014-02-27
CPC分类号： F04B49/22 , F04B1/0452 , F04B7/0076 , F04B53/1082 , F16K41/12
摘要： An electromagnetic body has a movable core reciprocatably movable within a movable core chamber. The movable core has through holes and a fitting hole that pass through the movable core in a direction of movement of the movable core. A stator core facing the movable core defines the movable core chamber together with the electromagnetic body. A valve stem is fixed into the fitting hole and has a fluid chamber recessed from a first end surface facing the stator core. Air bubbles generated in a gap can be guided into the fluid chamber and collapse by flow of the fuel flowing into the fluid chamber from the through holes through the gap.
摘要翻译： 电磁体具有在可动芯室内可往复运动的可动芯。 可动铁芯具有贯通活动铁心的移动方向的可动铁心的通孔和嵌合孔。 面向可动铁芯的定子铁芯与电磁体一起限定可动铁心室。 阀杆固定到装配孔中，并且具有从面向定子芯的第一端面凹陷的流体室。 在间隙中产生的气泡可以被引导到流体室中，并且通过从通孔穿过间隙流入流体室的燃料的流动而塌缩。
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公开(公告)号：US20190145364A1
公开(公告)日：2019-05-16
申请号：US16096442
申请日：2017-03-30
申请人： DENSO CORPORATION
摘要： A housing-includes a pressurizing chamber. A plunger is moved to increase and decrease a volume of the pressurizing chamber, so that the plunger can pressurize the fuel in the pressurizing chamber. A fuel chamber forming portion is placed on a radially outer side of the plunger and forms a fuel chamber that is communicated with the pressurizing chamber. A pulsation damper is placed in an inside of the fuel chamber and is operable to reduce pressure pulsation of the fuel in the fuel chamber. Fixable portions are placed on a radially outer side of the plunger while each of the fixable portions includes a receiving through-hole. The fixable portions are fixed to an engine with bolts, which are provided to correspond with the receiving through-holes, respectively. The fuel chamber forming portion is displaced from axes of the receiving through-holes.
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公开(公告)号：US20180202435A1
公开(公告)日：2018-07-19
申请号：US15919032
申请日：2018-03-12
申请人： DENSO CORPORATION
IPC分类号： F04B53/10 , F02M59/46 , F02M63/00 , F16K31/44 , F16K1/42 , F02M59/36 , F04B53/14 , F04B53/16 , F04B7/00
CPC分类号： F04B53/1087 , F02M59/02 , F02M59/368 , F02M59/46 , F02M59/466 , F02M63/0035 , F02M63/0075 , F02M63/0077 , F02M63/0078 , F04B7/0076 , F04B19/22 , F04B53/103 , F04B53/1032 , F04B53/14 , F04B53/16 , F16K1/32 , F16K1/42 , F16K1/50 , F16K1/54 , F16K31/0655 , F16K31/44
摘要： A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flows through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.
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公开(公告)号：US20170002779A1
公开(公告)日：2017-01-05
申请号：US15198036
申请日：2016-06-30
申请人： DENSO CORPORATION
发明人： Kaoru ODA , Shinichiro KOSHIMOTO , Shinobu OIKAWA
IPC分类号： F02M37/00 , F04B49/22 , F02M55/02 , F04B53/16 , F04B53/10 , F02M37/06 , F04B19/22 , F04B53/14
CPC分类号： F02M37/0052 , F02M37/06 , F02M59/46 , F02M63/005 , F04B9/042 , F04B17/03 , F04B17/05 , F04B19/22 , F04B49/08 , F04B49/22 , F04B49/24 , F04B53/10 , F04B53/1087 , F04B53/14 , F04B53/16 , Y10T137/7734
摘要： A high pressure pump includes a pressurization portion, a discharge portion, a body portion, a valve member, an urging member, valve hold member and a limiting portion. The body portion includes a relief passage, an inlet, a valve seat, and an outlet. The valve member includes a large diameter portion and a small diameter portion. The small diameter portion is located between the valve seat and the large diameter portion and has an outer diameter smaller than an outer diameter of the large diameter portion. The valve hold member surrounding and holding the large diameter portion. The limiting portion capable of limiting a motion of the valve hold member in a separation direction. According to this, a pressure in a fuel rail from extraordinarily increasing again after the relief valve is opened once.
摘要翻译： 高压泵包括加压部，排出部，主体部，阀构件，推压构件，阀保持构件和限制部。 主体部分包括卸载通道，入口，阀座和出口。 阀构件包括大直径部分和小直径部分。 小直径部分位于阀座和大直径部分之间，其外径小于大直径部分的外径。 围绕并保持大直径部分的阀保持构件。 所述限制部能够限制所述阀保持部件沿分离方向的运动。 据此，在安全阀打开一次后，燃料轨中的压力再次显着增加。
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公开(公告)号：US20200224653A1
公开(公告)日：2020-07-16
申请号：US16828081
申请日：2020-03-24
申请人： DENSO CORPORATION
摘要： A high-pressure pump includes a pressurizing chamber forming portion, a discharge passage forming portion, a discharge seat member, an intermediate member, a relief seat member, a discharge valve, and a relief valve. The intermediate member includes a first passage that passes through the intermediate member between one surface facing a pressurizing chamber and the other surface facing away from the pressurizing chamber. The relief valve seat includes a second passage that passes through the relief seat member between the one surface facing the pressurizing chamber and the other surface facing away from the pressurizing chamber. At least one of the intermediate member and the relief seat member includes an annular recess that fluidly connects the first passage and the second passage. The annular recess is recessed from a surface of the at least one of the intermediate member and the relief seat member facing the other.
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公开(公告)号：US20180328329A1
公开(公告)日：2018-11-15
申请号：US15775903
申请日：2016-11-04
申请人： DENSO CORPORATION
发明人： Shinichiro KOSHIMOTO , Kaoru ODA , Yasuhiro SAWADA
CPC分类号： F02M63/005 , F02D41/3863 , F02M55/00 , F02M55/007 , F02M59/46 , F02M67/12 , F16K17/04 , F16K17/06
摘要： A relief valve capable of reducing pressure of fuel in a discharge passage includes: a valve housing having a communication hole; a valve member provided in a reciprocating manner against the valve housing, and the valve member regulates a flow of the fuel between a discharge passage and a fuel chamber when the valve member is brought into contact with an inner wall formed around the communication hole and the valve member allows the flow of the fuel between the discharge passage and the fuel chamber when the valve member is separated from the inner wall; a spring that biases the valve member such that the valve member and the inner wall are in contact with each other; an adjusting pipe provided at a side opposite to the inner wall with respect to the valve member and configured to adjust biasing force of the spring; and a stopper that is formed as a different component from the adjusting pipe and that regulates movement of the valve member in a valve opening direction by abutting on the valve member.
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公开(公告)号：US20170101987A1
公开(公告)日：2017-04-13
申请号：US15386177
申请日：2016-12-21
申请人： DENSO CORPORATION
CPC分类号： F04B53/1085 , F02M59/025 , F02M59/466 , F02M63/0075 , F02M63/0077 , F02M63/0078 , F04B1/0452 , F04B19/04 , F04B19/22 , F04B53/1087 , F04B53/14 , F04B53/16 , F16K1/32
摘要： A valve seat member, which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against an inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.
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公开(公告)号：US20150260296A1
公开(公告)日：2015-09-17
申请号：US14725492
申请日：2015-05-29
申请人： DENSO CORPORATION
CPC分类号： F04B53/1087 , F02M59/02 , F02M59/368 , F02M59/46 , F02M59/466 , F02M63/0035 , F02M63/0075 , F02M63/0077 , F02M63/0078 , F04B7/0076 , F04B19/22 , F04B53/103 , F04B53/1032 , F04B53/14 , F04B53/16 , F16K1/32 , F16K1/42 , F16K1/50 , F16K1/54 , F16K31/0655 , F16K31/44
摘要： A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flow through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.
摘要翻译： 阀座具有内通道和外通道。 抽吸阀构件具有第一通道和第一突出部分，其在阀打开时将从压力室流动的燃料引导到第一通道。 因此，通过在关闭方向施加到吸入阀构件的动压力的作用力减小。 通过流入压力平衡槽的燃料的压力的作用力通过吸入阀构件的动压抵消作用力。 因此，能够抑制动压下的自闭，能够降低电磁驱动部的最大输出。 燃料流过通过吸入阀构件和第一通道径向外侧的通道。 即使当吸入阀构件的提升量小时，流体通道区域也是可固定的。
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