Visteon Global Technolgoies, Inc.

Ford Motor Company Limited

Visteon Global Tech., Inc

Kevin Roy Harpenau

Steven John Yockey

Richard Kenneth Harris

Jayeson David Fougner

David W Linden

Kirk E Neet

Michael Timothy York

Jyoti Gururaj Kathawate

Steve John Yockey

Brian Scott Phillips

Dave W Linden

Tony Militello

Dave Linden

David Frank Dennison Buck

Evans Edward Thompson

A stator for a dynamoelectric machine improves the cooling of the stator winding without increasing the size of the stator winding or the entire stator. The stator is of a unique construction wherein the size, and more specifically the cross sectional area or volume of the individual conductors is greatly reduced, while the total number of conductors is increased. In addition, a multiple filar construction is employed to avoid the potential for high levels of inductance and resistance in the conductors and to minimize the interference between the cascaded stator end loops and the housing that surrounds the stator.

Alternator stator having a multiple filar construction to improve convective cooling

An alternator assembly having a pair of housing members which cooperatively contain a stator , rotor , and bearing . The housing member includes an integrally formed bearing sleeve member which receives the bearing and allows the rotor to rotate within the assembly

Method for producing an alternator assembly housing member

An alternator includes an inner housing and an outer housing. A pair of o-rings positioned therebetween create a sealed flow chamber having a first flow channel, a second flow channel and an axial passageway. The first flow channel is a disk shaped cavity extending diametrically across the alternator. The second flow channel forms an annular jacket extending entirely around the alternator. The axial passageway directs coolant axially from the first flow channel into the second flow channel. An inlet positioned diametrically across from the axial passageway allows coolant to enter the first flow channel, such that coolant entering the inlet must flow diametrically across the alternator to reach the axial passageway. An outlet positioned diametrically across from the axial passageway allows coolant to exit the flow chamber, such that coolant entering the second flow channel must travel annularly around the alternator to reach the outlet.

Flow path for a liquid cooled alternator

An alternator comprising an inner housing, an outer housing mounted over the inner housing and a plurality of o-rings positioned between the inner housing and the outer housing thereby creating a sealed flow chamber having a first plenum, an axial jacket, a second plenum, a first passageway interconnecting the first plenum and the axial jacket, a second passageway interconnecting the axial jacket and the second plenum, an inlet extending from the first plenum, and an outlet extending from the second plenum. The first and second plenums are disk shaped cavities extending diametrically across the alternator, and the axial jacket is an annular jacket extending around the alternator. The first passageway is located diametrically across from the inlet and the second passageway is located diametrically across from the first passageway. The outlet is located diametrically across from the second passageway.

Liquid cooled alternator

An automotive alternator includes an inner housing assembly, an outer housing assembly mounted over the inner housing assembly, and an internal plate mounted within the outer housing assembly. The inner housing assembly, the outer housing assembly, and the internal plate define a sealed flow chamber. The flow chamber includes an inlet reservoir and an outlet reservoir located adjacent a first end, and a cross over reservoir located adjacent a second end. The inner housing assembly includes a plurality of radially extending axial fins. The fins extend outward from the sleeve toward the outer housing to define a plurality of axial flow channels. A first portion of the flow channels interconnects the inlet reservoir to the cross over reservoir and a second portion of the flow channels interconnects the cross over reservoir to the outlet reservoir.

Liquid cooled alternator having finned stator sleeve

An electrical machine comprising a rotor ( ) mounted on a shaft ( ) for rotation therewith and defining an axis of rotation, and a stator ( ) disposed coaxially with and in opposition to the rotor ( ). The electrical machine further comprises a housing ( ) enclosing the stator ( ) and the rotor ( ), the housing ( ) having a first axial end with a wall with an inner surface and an outer surface and a second axial end with a wall with an inner surface and an outer surface. The electrical machine also includes a first cooling tube ( &prime;) having a first end and a second end and an embedded portion thereof embedded between the first inner surface and the first outer surface of end wall ( ). A second cooling tube ( &prime;) has a first end and a second end and an embedded portion thereof embedded between said inner surface and said outer surface of the wall ( ) of the second axial end. The first end ( ) of the first cooling tube and the first end ( ) of the second cooling tube ( &prime;) are fluidically coupled together to permit fluid flow in parallel between the first cooling tube ( &prime;) and the second cooling tube ( &prime;).

Liquid-cooled electrical machine with parallel flow

An electrical machine comprising a rotor ( ) mounted on a shaft ( ) for rotation therewith and defining an axis of rotation, and a stator ( ) disposed coaxially with and in opposition to the rotor ( ). The electrical machine further comprises a housing ( ) enclosing the stator ( ) and the rotor ( ), the housing ( ) having a first axial end with a wall with an inner surface and an outer surface and a second axial end with a wall with an inner surface and an outer surface. The electrical machine also includes a first cooling tube ( &prime;) having a first end and a second end and an embedded portion thereof embedded between the first inner surface and the first outer surface. The first end and the second end of the first cooling tube have a port therebetween directly fluidically coupling the first end to the second end. A second cooling tube ( &prime;) having a first end and a second end and an embedded portion thereof embedded between said inner surface and said outer surface of the wall ( ) of the second axial end. The first end ( ) of the first cooling tube and the first end ( ) of the second cooling tube ( &prime;) are fluidically coupled together to permit fluid flow in parallel between the first cooling tube ( &prime;) and the second cooling tube ( &prime;).

Liquid-cooled electrical machine with integral bypass

An alternator assembly,having a pair of housing members,which cooperatively contain a stator,, rotor,, and bearing,. The housing member,includes an integrally formed bearing sleeve member,which receives the bearing,and allows the rotor,to rotate within the assembly

Alternator assembly

An liquid-cooling system for an electrical machine comprises a rotor mounted on a shaft for rotation therewith and defining an axis of rotation, and a stator disposed coaxially with and in opposition to the rotor. The stator has stator windings, the stator windings having an axially-extending portion. The electrical machine further comprises a housing enclosing the stator and the rotor, the housing having an axial end, the axial end having a wall with an inner surface and an outer surface. The electrical machine also includes a cooling tube having a first end and a second end and an embedded portion thereof embedded between the first inner surface and the first outer surface, the embedded portion of the cooling tube located in substantial axial alignment with the axially-extending portion of the stator windings. In another aspect of this design, the inner surface of the wall of the axial end of the housing is substantially flat and is separated from an axial end of the rotor by an air gap. In a third aspect of this design, the housing of the electrical machine comprises a front housing portion and a rear housing portion. The front housing portion defines a first circumferentially-extending channel which encloses a first axially-extending portion of the stator windings and the rear housing portion defines a second circumferentially-extending channel which encloses a second axially-extending portion of the stator windings. Designs as disclosed herein provide effective cooling of an electrical machine while supporting packaging-efficient electrical machine designs.

Liquid-cooled electrical machine

A rotating machine comprises a housing defining a generally cylindrical bearing pocket and defining an interior and exterior. The machine also includes a bearing retainer having a generally cylindrical sleeve portion retained in the bearing pocket and a bearing having an outer race and an inner race, the outer race affixed within the cylindrical sleeve portion. The machine further has a rotating member mounted on a shaft for rotation therewith, the shaft having a portion affixed within the inner race of the bearing. In one embodiment, the bearing retainer includes anti-rotation keying projections the bearing pocket includes complementary depressions for the keying projections. The keying projections cooperate with the complementary depressions to prevent rotation of the bearing retainer with respect to the bearing pocket. In another embodiment, a cap is affixed to the bearing retainer to substantially prevent contamination from reaching the bearing from the exterior.

Growing community of inventors

Ypsilanti, MI, United States of America

Kevin Roy Harpenau