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公开(公告)号：US20230318371A1
公开(公告)日：2023-10-05
申请号：US18192194
申请日：2023-03-29
申请人： BorgWarner Inc.
发明人： Jeffrey Carter , Tyler Garrard
摘要： A rotor assembly included in an electric motor having a magnetic layer, including an additive manufacturing magnetic substrate, coupled to an output shaft of an electric motor; and an insulating layer, including an additive manufacturing insulating substrate, coupled to the output shaft axially adjacent to the magnetic layer.
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公开(公告)号：US09906102B2
公开(公告)日：2018-02-27
申请号：US14634942
申请日：2015-03-02
申请人： BorgWarner Inc.
CPC分类号： H02K9/00 , F01D25/145 , F02C6/12 , F02C7/24 , F02C9/00 , F05D2220/40 , F05D2240/14 , H02K5/20 , H02K7/14 , H02K9/19 , H02K2205/09
摘要： It is common in electric machines to use the housing as a heat sink to remove energy from the electric machine. In some applications, however, the housing receives energy from a hot element. For example, in an electronically controlled turbocharger, the very hot turbine housing radiates and conducts energy to the electric machine housing exacerbating the heating within the electric machine. To reduce the heat transfer into the electric machine, a gap is provided between the stator and the housing outside the stator. In one alternative, the gap is filled with an insulating material. In another embodiment, the gap is an air gap with the stator located within the housing by circumferential rings or axial rods in corresponding grooves. In yet another embodiment, coolant is provided to the gap at the top and drained away at the bottom under the action of gravity.
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公开(公告)号：US09780625B2
公开(公告)日：2017-10-03
申请号：US14597291
申请日：2015-01-15
申请人： BorgWarner Inc.
CPC分类号： H02K9/19 , H02K15/02 , Y10T29/49009
摘要： Performance of an electric motor can be improved if coolant is provided to the coils of the stator. An electric motor is disclosed that has a shaft onto which the rotor is secured. The motor has a stator that is mounted on bearings that are mounted on the shaft. The stator has a plurality of coils. A coolant guide is provided that fills voids between the groups of windings. The coolant guide has a plurality of fingers with the fingers arranged between adjacent pairs of coils. The coolant guide has internal passages to accept pressurized coolant and outlet holes to spray coolant onto the coils. In other embodiments, the fingers guide coolant to reach all coils under the force of gravity.
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公开(公告)号：US20200032653A1
公开(公告)日：2020-01-30
申请号：US16505108
申请日：2019-07-08
申请人： BorgWarner Inc.
摘要： An electronically-controlled turbocharger (ECT) includes a shaft having a turbine wheel affixed thereto at or adjacent to one end thereof, a retaining feature in the form of a shoulder or a plurality of splines defined radially about the shaft between the turbine wheel and an end of the shaft opposite the one end thereof, a rotor of an electric motor received on the shaft with one end of the rotor facing the turbine wheel configured complementary to and engaging with the retaining feature, and a retaining element affixed to the shaft and abutting the rotor on an end of the rotor opposite the one end thereof.
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公开(公告)号：US10309300B2
公开(公告)日：2019-06-04
申请号：US14767848
申请日：2014-02-20
申请人： BorgWarner Inc.
IPC分类号： F02B39/10 , F02B39/00 , F01D5/02 , F01D15/10 , F01D25/16 , F02B33/34 , F02B37/04 , F01D25/24
摘要： By relieving the shaft of an electronically-controlled turbocharger (ECT) in a central region of where a rotor of an electric machine couples with the shaft eases assembly of the electric machine onto the shaft. On either side of the relieved section, the fit between the shaft and the rotor may be a slip fit or an interference fit. Alternatively, the rotor is relieved in a central section. In some embodiments, the shaft is welded to the rotor. In yet other embodiments, the outside of the shaft and the inside of the rotor are threaded with a nut or a pin to secure the shaft to the rotor or the rotor itself has threads to engage with threads on the shaft. Such arrangements ease assembly and allow adjustment of dynamic characteristics of the rotor system.
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