Lubricant supported electric motor with a monitoring port

Patent metadata

Field	Value
Publication number	US-11863053-B2
Application number	US-202017064684-A
Country	US
Kind code	B2
Filing date	Oct 7, 2020
Priority date	Oct 8, 2019
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A lubricant supported electric motor includes a stator presenting an outer raceway and a rotor extending along an axis and rotatably disposed within the stator. The rotor presents an inner raceway disposed in spaced relationship with said outer raceway to define at least one hydrostatic support chamber disposed therebetween. A lubricant is disposed in the hydrostatic support chamber for supporting the rotor within the stator. A monitoring port is disposed in fluid communication with the at least one hydrostatic support chamber, and a sensor is coupled with the monitoring port for monitoring an operating characteristic of the lubricant disposed in said at least one hydrostatic support chamber. This monitored operating characteristic is then used to determine a real-time operating condition of the lubricant supported electric motor.

First claim

What is claimed is:

1. A lubricant supported electric motor comprising:
a stator presenting an outer raceway;
a rotor extending along an axis and rotatably disposed within said stator;
said rotor presenting an inner raceway disposed in spaced relationship with said outer raceway to define at least one hydrostatic support chamber therebetween;
a lubricant comprised of oil disposed in said at least one hydrostatic support chamber for supporting said rotor within said stator,
a monitoring port disposed in fluid communication with said at least one hydrostatic support chamber; and
a sensor coupled with said monitoring port and configured to monitor an operating characteristic of said lubricant disposed in said at least one hydrostatic support chamber.

2. The lubricant supported electric motor as set forth in claim 1 , further comprising a controller disposed in electrical communication with said sensor for receiving said monitored operating characteristic of said lubricant disposed in said hydrostatic support chamber.

3. The lubricant supported electric motor as set forth in claim 1 , wherein said sensor is comprised of a pressure sensor configured to sense a pressure of said lubricant disposed within said at least one hydrostatic support chamber.

4. The lubricant supported electric motor as set forth in claim 1 , wherein said sensor is comprised of a temperature sensor configured to sense a temperature of said lubricant disposed within said at least one hydrostatic support chamber.

5. The lubricant supported electric motor as set forth in claim 2 , wherein said at least one hydrostatic support chamber includes a plurality of hydrostatic support chambers disposed circumferentially about said axis in spaced relationship with one another.

6. The lubricant supported electric motor as set forth in claim 5 , further comprising a plurality of monitoring ports each disposed in fluid communication with a respective one of said plurality of hydrostatic support chambers and a plurality of sensors each disposed in communication with a respective one of said plurality of monitoring ports.

7. The lubricant supported electric motor as set forth in claim 6 , wherein said controller is disposed in electrical communication with each of said plurality of sensors and configured to receive and analyze operating characteristics of said lubricant disposed in each of said plurality of hydrostatic support chambers.

8. The lubricant supported electric motor as set forth in claim 1 , wherein said rotor is operably connected to a final drive device that is interconnected to a wheel of a vehicle.

9. The lubricant supported electric motor as set forth in claim 1 , wherein said stator defines a passageway disposed in fluid communication with said at least one hydrostatic support chamber for supplying said lubricant.

10. The lubricant supported electric motor as set forth in claim 5 , wherein said stator defines a plurality of passageways each disposed in fluid communication with a respective one of said plurality of hydrostatic support chambers for supplying said lubricant.

Assignees

• Neapco Intellectual Property Holdings Llc

Inventors

• Remboski Donald
• Dedo Jacqueline
• Versteyhe Mark

Classifications

• H02K9/193 Primary

  with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium · CPC title

• F16N29/02

  for influencing the supply of lubricant · CPC title

• B60K7/0007 Primary

  the motor being electric · CPC title

• F16N2210/18

  Electric motors · CPC title

• F16N2250/04

  Pressure · CPC title