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    Fuel pump
    1.
    发明授权
    Fuel pump 有权

    公开(公告)号：US10408219B2

    公开(公告)日：2019-09-10

    申请号：US15022336

    申请日：2014-09-15

    Applicant: DENSO CORPORATION

    Inventor： Hiromi Sakai ,  Kiyoshi Nagata ,  Masaya Ootake

    IPC: F04D13/00 ,  F04D29/046 ,  F04D5/00 ,  F04D29/66 ,  F02M37/04 ,  F04D3/00 ,  F04D13/06 ,  F04D29/52 ,  F04D29/047 ,  F02M59/44

    Abstract: A fuel pump includes a pump cover at one end portion of the housing, a cover end at the other end portion of the housing, a bearing supported by the cover end and rotatably supporting 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, 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 accommodating the bearing, and a connection part that connects together the base part and the bearing accommodating part. A length of the connection part is shorter than a length of the base part and a length of the bearing accommodating part, in a direction of the rotation axis.

    Fuel pump
    3.
    发明授权
    Fuel pump 有权

    公开(公告)号：US10047752B2

    公开(公告)日：2018-08-14

    申请号：US14912544

    申请日：2014-09-03

    Applicant: DENSO CORPORATION

    Inventor： Tetsuo Hayakawa ,  Hiromi Sakai ,  Kiyoshi Nagata

    IPC: F04D13/06 ,  F04D29/52 ,  F02M37/10 ,  H02K5/12 ,  H02K15/02 ,  H02K7/14 ,  H02K3/44 ,  H02K5/08 ,  F02M37/08

    Abstract: A fuel chamber is formed between a pump arrangement and a motor arrangement, and outer flow passages are formed between a stator of the motor arrangement and a housing. Fuel, which is discharged from a discharge port of the pump arrangement, is outputted to an outside of the housing from a fuel discharge conduit that is formed on a side of the motor arrangement, which is opposite from the pump arrangement, after passing through the motor arrangement. At a time of performing electroplating on the stator, electrode contact portions, to which electrodes can contact, is formed in an outer wall of the stator, which forms the outer flow passages.

    Rotor of brushless motor
    4.
    发明授权
    Rotor of brushless motor 有权

    公开(公告)号：US09787150B2

    公开(公告)日：2017-10-10

    申请号：US14471873

    申请日：2014-08-28

    Applicant: DENSO CORPORATION

    Inventor： Yuuji Hidaka ,  Kiyoshi Nagata

    IPC: H02K1/27 ,  H02K1/28 ,  H02K15/03

    CPC classification number: H02K1/2733 ,  H02K1/28 ,  H02K15/03 ,  H02K2213/03

    Abstract: A rotor of a brushless motor used in a fuel pump includes a permanent magnet having first and second ends that are configured to have a thickness ratio so that a degree of margin of those ends, which is a difference between an allowable stress and a temperature stress due to expansion and contraction of a rotor core caused by a temperature change is equal to or greater than a preset value. As a result, a cracking of the permanent magnet on the both ends that is caused by repeated expansions and contractions of the rotor core is prevented.

    Brushless motor with crossing wire holder
    6.
    发明授权
    Brushless motor with crossing wire holder 有权
    无刷电机带交叉线夹

    公开(公告)号：US09178397B2

    公开(公告)日：2015-11-03

    申请号：US13689994

    申请日：2012-11-30

    Applicant: DENSO CORPORATION

    Inventor： Daiji Furuhashi ,  Kiyoshi Nagata ,  Masaya Ootake

    IPC: H02K3/38 ,  H02K3/52 ,  H02K5/12

    CPC classification number: H02K3/38 ,  H02K3/522 ,  H02K5/12 ,  H02K2203/06

    Abstract: A motor part of a fuel pump is a brushless motor having a stator and a rotor. The stator has a core, a coil set and an insulator, which holds the core and the coil set in an insulated manner. The coil set has a plurality of coils wound about a tooth part and a plurality of crossing wires connecting the coils. The insulator is formed by stacking central ring parts of a plurality of stator units in an axial direction. At least one of crossing wire holder parts is formed of a combination of guide projections, which are formed on the different central ring parts. The length of the brushless motor in the axial direction can thus be shortened.

    Abstract translation: 燃料泵的电动机部件是具有定子和转子的无刷电动机。 定子具有芯，线圈组和绝缘体，其以绝缘方式保持芯和线圈组。 线圈组具有围绕齿部缠绕的多个线圈和连接线圈的多条交叉线。 绝缘体通过在轴向上堆叠多个定子单元的中心环部而形成。 交叉线保持器部分中的至少一个由形成在不同的中心环部分上的引导突起的组合形成。 因此可以缩短无刷电动机在轴向上的长度。

    Control system for multiphase electric rotating machine
    7.
    发明授权
    Control system for multiphase electric rotating machine 有权

    公开(公告)号：US08593092B2

    公开(公告)日：2013-11-26

    申请号：US13760175

    申请日：2013-02-06

    Applicant: DENSO CORPORATION

    Inventor： Masahiro Kuroda ,  Nobumasa Ueda ,  Kiyoshi Nagata ,  Masaya Ootake ,  Sadahiro Akama

    IPC: H02P6/04

    CPC classification number: H02P6/20 ,  H02M7/53875

    Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.

    Liquid pump
    9.
    发明授权
    Liquid pump 有权

    公开(公告)号：US10148150B2

    公开(公告)日：2018-12-04

    申请号：US14912529

    申请日：2014-09-03

    Applicant: DENSO CORPORATION

    Inventor： Kiyoshi Nagata ,  Tetsuo Hayakawa ,  Masaya Ootake

    IPC: F04D13/06 ,  H02K5/22 ,  F04D3/00 ,  F04D29/18 ,  F04D29/52 ,  F02M37/08 ,  F04D5/00 ,  F02M37/10

    Abstract: A cover end of a fuel pump is formed by resin molding and has a tubular portion, which holds a bearing that is placed along a central axis of the tubular portion and rotatably supports one end portion of a shaft of a motor arrangement. Furthermore, three terminals, which supply three-phase electric power received from an outside to windings on a phase-by-phase basis, are insert molded in the cover end. In the cover end, a first transverse passage, which is formed between the first terminal and the second terminal in a circumferential direction, and a second transverse passage, which is formed between the second terminal and the third terminal in the circumferential direction, are configured into a form of V-shape, which diverges in a radially outer direction, in a view taken in an axial direction.

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