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公开(公告)号：US20160230772A1
公开(公告)日：2016-08-11
申请号：US15022336
申请日：2014-09-15
Applicant: DENSO CORPORATION
Inventor： Hiromi SAKAI , Kiyoshi NAGATA , Masaya OOTAKE
IPC: F04D29/046 , F04D13/06 , F02M59/44 , F04D29/18 , F04D29/52 , F04D3/00 , F04D29/043
CPC classification number: F04D29/046 , F02M37/048 , F02M59/44 , F04D3/005 , F04D5/002 , F04D13/06 , F04D29/047 , F04D29/528 , F04D29/668
Abstract: A fuel pump includes a pump cover that is provided at one end portion of the housing and includes an inlet port, a cover end that is provided at the other end portion of the housing and includes a discharge port, a bearing that is supported by the cover end and rotatably supports an end portion of the shaft on the cover end-side. The cover end includes a base part that covers the other end portion, a discharge part that is connected to the base part and includes the discharge port, a bearing accommodating part which is formed such that a cross-section of the bearing accommodating part perpendicular to a rotation axis of the shaft has an annular shape and which includes an accommodating space that accommodates the bearing, and a connection part that connects together the base part and the bearing accommodating part. A length of the connection part in a direction of the rotation axis is shorter than a length of the base part in the direction of the rotation axis, and a length of the bearing accommodating part in the direction of the rotation axis.
Abstract translation: 一种燃料泵，包括一个设置在壳体的一个端部的泵盖，包括一个入口，一个设在壳体另一端的盖端，包括一个排放口， 盖端部并且在盖端侧上可旋转地支撑轴的端部。 盖端包括覆盖另一端部的基部，连接到基部并且包括排出口的排出部，轴承容纳部，其形成为使得轴承容纳部的横截面垂直于 所述轴的旋转轴线具有环状，并且包括容纳所述轴承的容纳空间，以及将所述基部与所述轴承容纳部连结的连接部。 连接部在旋转轴的方向上的长度比旋转轴的方向上的基部的长度短，轴向容纳部的旋转轴的方向的长度短。
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公开(公告)号：US20160201692A1
公开(公告)日：2016-07-14
申请号：US14912495
申请日：2014-09-03
Applicant: DENSO CORPORATION
Inventor： Masaya OOTAKE , Hiromi SAKAI , Kiyoshi NAGATA
IPC: F04D29/66 , F04D3/00 , F04D29/52 , F04D29/043 , F04D29/046 , F04D29/18 , F02M59/00 , F04D13/06
CPC classification number: F02M37/08 , F02M59/00 , F04D3/005 , F04D5/002 , F04D13/06 , F04D29/041 , F04D29/042 , F04D29/043 , F04D29/046 , F04D29/181 , F04D29/528 , F04D29/669
Abstract: A bearing receiving portion includes a receiving space that receives a bearing, which rotatably supports an end portion of a shaft. The bearing receiving portion includes an intermediate inner diameter portion, which receives the end portion of the shaft, and a small inner diameter portion, which includes a column shape space having an inner diameter that is smaller than an outer diameter of the end portion. Fuel in an inside of a housing flows into or flows out relative to the receiving space. When the shaft is moved toward an upside, the fuel, which is accumulated in a space formed by a bottom wall, an inner wall and an end surface, functions as a damper to reduce a relative moving speed of the shaft relative to the bearing receiving portion.
Abstract translation: 轴承接收部分包括容纳空间，该容纳空间可旋转地支撑轴的端部。 轴承接收部分包括容纳轴的端部的中间内径部分和小内径部分，其包括具有小于端部部分的外径的内径的柱形空间。 壳体内部的燃料相对于容纳空间流入或流出。 当轴向上移动时，积聚在由底壁，内壁和端面形成的空间中的燃料用作减震器以减小轴相对于轴承接收的相对移动速度 一部分。
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公开(公告)号：US20190017475A1
公开(公告)日：2019-01-17
申请号：US16069015
申请日：2017-01-24
Applicant: DENSO CORPORATION
Inventor： Shingo FUKUOKA , Kiyoshi NAGATA , Hiromi SAKAI , Yuuji HIDAKA
CPC classification number: F02M37/14 , F02D19/084 , F02D19/087 , F02D41/0025 , F02D41/3082 , F02D2200/0611 , F02M37/10 , F02M37/22 , F02M37/44 , F02M2037/085 , G01N27/22 , G01N33/2852
Abstract: A fuel pump has a pump function of sucking fuel in a fuel tank and discharging fuel, and a detection function of detecting a capacitance correlated to a concentration of alcohol in fuel in the fuel tank. The fuel pump includes a pump main body that is received in the fuel tank to perform the pump function, a housing electrode that covers the pump main body in the fuel tank, and an outside electrode that is located outside of the housing electrode in the fuel tank. A gap is formed between the outside electrode and the housing electrode to give the capacitance.
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公开(公告)号：US20180372096A1
公开(公告)日：2018-12-27
申请号：US15780059
申请日：2016-12-01
Applicant: DENSO CORPORATION
Inventor： Daiji FURUHASHI , Hiromi SAKAI , Tetsuo HAYAKAWA
Abstract: A casing of a housing of a fuel pump has a bearing surface that rotatably supports an inner gear in an axial direction from a motor side while a plain bearing extends through the bearing surface. The plain bearing includes: an inner-peripheral-side step that is stepped by increasing an inner diameter of the plain bearing on a counter-motor side of the inner-peripheral-side step in the axial direction; and an outer-peripheral-side step that is stepped by increasing an outer diameter of the plain bearing on the motor side of the outer-peripheral-side step at a position that is on the motor side of the bearing surface in the axial direction.
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Patent Agency Ranking
公开(公告)号：US20180347526A1
公开(公告)日：2018-12-06
申请号：US15776491
申请日：2016-11-25
Applicant: DENSO CORPORATION
Inventor： Satoshi ITO , Daiji FURUHASHI , Yuuji HIDAKA , Hiromi SAKAI
CPC classification number: F02M37/10 , F02M37/22 , F02M2037/228 , F04C2/08
Abstract: A fuel pump is connected to a suction filter which is provided with a filter connecting portion having a cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole. The fuel pump suctions the fuel filtered by the suction filter. The fuel pump is provided with a suction port having multiple suction openings at a side of the suction filter so as to suction the fuel therethrough, and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion. The pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.
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公开(公告)号：US20180010606A1
公开(公告)日：2018-01-11
申请号：US15544532
申请日：2016-01-19
Applicant: DENSO CORPORATION
Inventor： Hiromi SAKAI , Daiji FURUHASHI
CPC classification number: F04C15/0061 , F04C2/084 , F04C2/102 , F04C13/001 , F04C15/0073 , F04C15/008 , F04C2210/1044 , F04C2230/603 , F04C2240/30 , F04C2240/40 , F04C2240/60
Abstract: An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion.
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公开(公告)号：US20160333875A1
公开(公告)日：2016-11-17
申请号：US15153951
申请日：2016-05-13
Applicant: DENSO CORPORATION
Inventor： Hiromi SAKAI , Daiji FURUHASHI
CPC classification number: F04C15/0042 , F01C21/10 , F02M59/14 , F04C2/102 , F04C11/008 , F04C15/06 , F04C2210/1044
Abstract: A fuel pump includes rotors that rotate, a pump housing that defines a rotor housing chamber that rotatably houses the rotors, and an outer circumferential side housing that includes a cylindrical portion formed in a cylindrical shape that surrounds the pump housing from an outer circumferential side and a narrowing potion having that narrows down with respect to the cylindrical portion. The fuel pump sucks fuel into the rotor housing chamber and then discharges the fuel due to the rotor rotating. A pump cover of the pump housing includes an inlet port that sucks fuel into the rotor housing chamber, and a sliding surface portion on which the rotors slide. An outer circumferential portion of the pump cover includes a joining portion joined to the narrowing portion, and a recessed portion that is recessed adjacent to the joining portion, the recessed portion allowing the outer circumferential portion to elastically deform.
Abstract translation: 燃料泵包括旋转的转子，限定可旋转地容纳转子的转子容纳室的泵壳体，以及外周侧壳体，其包括形成为从外周侧围绕泵壳体的圆筒形状的圆筒部分， 具有相对于圆柱形部分变窄的狭窄部分。 燃料泵将燃料吸入转子容纳室，然后由于转子旋转而将燃料排出。 泵壳的泵盖包括将燃料吸入转子容纳室的入口端口和转子滑动的滑动面部分。 所述泵盖的外周部包括与所述变窄部接合的接合部和与所述接合部相邻地凹陷的凹部，所述凹部使所述外周部弹性变形。
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公开(公告)号：US20160265495A1
公开(公告)日：2016-09-15
申请号：US15033334
申请日：2014-10-16
Applicant: DENSO CORPORATION
Inventor： Kiyoshi NAGATA , Yuuichirou OOTA , Hiromi SAKAI
IPC: F02M37/20 , F04D13/06 , F04D29/043 , F02M37/22 , F04D29/18 , F04D29/70 , F02M37/08 , F04D3/00 , F04D29/041
CPC classification number: F02M37/20 , F02M37/048 , F02M37/08 , F02M37/22 , F04D3/005 , F04D5/002 , F04D13/06 , F04D29/0413 , F04D29/043 , F04D29/18 , F04D29/708
Abstract: A projection of a suction end cover has an outer circumferential surface serving as a sealing surface to be connected with a suction filter. A suction flow path is configured by an introduction hole in a bottomed cylindrical shape, and a connection hole. The introduction hole extends from the distal end of the projection of the suction end cover toward a pump chamber. The connection hole connects the introduction hole and the pump chamber. The introduction hole has a bottom surface that is located axially between a slide inner surface of the suction end cover and a bottom surface of a recess. The suction flow path can be increased in sectional area enough to reach a position in immediate front of the pump chamber with no change in outer diameter of a housing. By reducing fuel flow speed in the suction flow path and suppressing negative pressure in the suction flow path, generation of fuel vapor in the suction flow path can be inhibited even in a large flow rate area.
Abstract translation: 抽吸端盖的突出部具有作为与抽吸过滤器连接的密封面的外周面。 抽吸流路由有底圆筒状的导入孔和连接孔构成。 引入孔从吸入端盖的突起的远端朝向泵室延伸。 连接孔连接导入孔和泵室。 引入孔具有轴向位于吸入端盖的滑动内表面和凹部的底表面之间的底表面。 吸入流动路径可以增加到足以达到泵室的紧前面的位置的截面面积，而壳体的外径没有变化。 通过减少吸入流路中的燃料流速并且抑制吸入流路中的负压，即使在大流量区域中也可以抑制吸入流路中的燃料蒸气的产生。
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公开(公告)号：US20150107105A1
公开(公告)日：2015-04-23
申请号：US14456120
申请日：2014-08-11
Applicant: DENSO CORPORATION
Inventor： Hiromi SAKAI
CPC classification number: F04D13/06 , F04D5/002 , H02K15/022 , H02K15/028 , H02K15/14 , Y10T29/49236
Abstract: A stator has ribs, which are configured to make contact with an inner wall of a housing when accommodated in the housing. In a deformation process, force is applied from a radially outside to first portions of the housing to elastically deform the housing. In an insertion process subsequent to the deformation process, the stator is inserted into the housing, such that the ribs are enabled to make contact with second portions of the housing, which are elastically deformed radially outward. In an affixation process subsequent to the insertion process, application of the force is released to cause the ribs to make contact with an inner wall of the housing.
Abstract translation: 定子具有肋，其构造成当容纳在壳体中时与壳体的内壁接触。 在变形过程中，力从外壳的径向外部施加到壳体的第一部分，以使壳体弹性变形。 在变形过程之后的插入过程中，定子被插入壳体中，使得肋能够与壳体的径向向外弹性变形的第二部分接触。 在插入过程之后的固定过程中，施加力被释放以使肋与壳体的内壁接触。
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