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13 条记录 (耗时 0.014 秒)

    Rotor for brushless motor
    5.
    发明授权
    Rotor for brushless motor 有权

    公开(公告)号：US09954415B2

    公开(公告)日：2018-04-24

    申请号：US14914785

    申请日：2014-08-21

    申请人： DENSO CORPORATION

    发明人： Yuuji Hidaka ,  Masaya Ootake ,  Kiyoshi Nagata

    IPC分类号： H02K1/27 ,  H02K7/04 ,  H02K1/02 ,  H02K5/12

    CPC分类号： H02K7/04 ,  H02K1/02 ,  H02K1/2733 ,  H02K5/12

    摘要： A permanent magnet of a rotor core of a rotor includes a first recess and a second recess, which are formed in an outer wall to correct a dynamic balance of the rotor. The permanent magnet is a bonded magnet that is formed by molding a mixture material, which is a mixture of resin and magnetic powder. The first recess and the second recess are formed at the time of molding the permanent magnet. Furthermore, the first recess and the second recess are formed at two axial ends, respectively, of the permanent magnet.

    Fuel pump and fuel pump module
    6.
    发明授权
    Fuel pump and fuel pump module 有权

    公开(公告)号：US11073118B2

    公开(公告)日：2021-07-27

    申请号：US15776491

    申请日：2016-11-25

    申请人： DENSO CORPORATION

    发明人： Satoshi Ito ,  Daiji Furuhashi ,  Yuuji Hidaka ,  Hiromi Sakai

    IPC分类号： F02M37/10 ,  F02M37/50 ,  F04C2/10 ,  F04C15/06 ,  F04C13/00 ,  F02M37/44

    摘要： 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.

    Fuel pump
    7.
    发明授权
    Fuel pump 有权

    公开(公告)号：US10233881B2

    公开(公告)日：2019-03-19

    申请号：US15571974

    申请日：2016-05-19

    申请人： DENSO CORPORATION

    发明人： Yuuji Hidaka ,  Masaya Ootake

    IPC分类号： F02M37/00 ,  F02M37/08 ,  F02M37/10 ,  F04D5/00 ,  F04D13/06 ,  F04D29/18 ,  F04D29/20 ,  F02M37/04

    摘要： An outer wall surface of an output end portion includes a pair of first plane surfaces which are formed at different positions in its circumferential direction. An inner wall surface of a fitting hole includes a pair of second plane surfaces which are formed at different positions in the circumferential direction. A clearance between one of the pair of first plane surfaces and one of the pair of second plane surfaces is made larger from one side toward the other side in an axial direction in a state that a rotary shaft and an impeller are concentric with each other.

    Rotor of brushless motor
    8.
    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

    申请人： DENSO CORPORATION

    发明人： Yuuji Hidaka ,  Kiyoshi Nagata

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

    CPC分类号： H02K1/2733 ,  H02K1/28 ,  H02K15/03 ,  H02K2213/03

    摘要： 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.

    Motor control device
    10.
    发明授权
    Motor control device 有权

    公开(公告)号：US12060848B2

    公开(公告)日：2024-08-13

    申请号：US18324241

    申请日：2023-05-26

    申请人： DENSO CORPORATION

    发明人： Yuichi Seo ,  Yuuji Hidaka

    IPC分类号： F02D41/22 ,  F02D41/30

    CPC分类号： F02D41/221 ,  F02D41/3082 ,  F02D2200/0606 ,  F02D2200/50

    摘要： A motor control device includes: a rotation control determination unit configured to determine whether a motor rotation control to rotate the motor fails; a parameter calculation unit configured to calculate a control failure frequency parameter having a correlation with a frequency of failure in the motor rotation control based on a determination result by the rotation control determination unit; and an abnormality determination unit configured to determine whether an abnormality has occurred in the motor based on the control failure frequency parameter.