Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for cooling and lubricating an off-axis motor/generator

A technology for electric motors and generators, used in cooling/ventilation units, electric power units, power units, etc., to solve problems such as limiting flexibility

Inactive Publication Date: 2008-05-21
GM GLOBAL TECH OPERATIONS LLC
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two electric machines located on the input shaft of the transmission limit the flexibility of the assembly design of this machine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for cooling and lubricating an off-axis motor/generator
  • Method and apparatus for cooling and lubricating an off-axis motor/generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Referring to FIG. 1 , a schematic cross-sectional view of a hybrid transmission 10 is shown. The hybrid transmission 10 includes an input shaft 12 and an output shaft 14 defining a first axis of rotation 16 . According to a preferred embodiment the hybrid transmission 10 also includes first and second electric machines which will be described hereafter as first and second electric motor / generators 20 , 22 . This first motor / generator 20 is referred to as an “on-shaft” motor / generator because its rotor 24 defines the same axis of rotation as the first axis 16 . Similarly, the second motor / generator 22 is referred to as an “off-axis” motor / generator because its rotor 26 defines a different axis of rotation than the first axis 16 .

[0012] A first sprocket 30 coupled to the rotor 26 is rotatable about the second axis of rotation 28 and a second sprocket 32 ​​is rotatable about the first axis 16 . A chain 34 couples the sprockets 30 and 32 so that output from the off-axi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a method for cooling and lubricating an off-axis motor / generator of a hybrid transmission. A transmission case at least partially defines a manifold. A transmission cover is mounted to the transmission case such that the off-axis motor / generator is retained therebetween. The transmission cover at least partially defines an oil passage. Oil is transferred through the manifold and onto a bearing device so that the bearing device is lubricated. Oil is also transferred through the oil passage and onto a torque transfer device such that the torque transfer device is lubricated. A corresponding apparatus for lubricating an off-axis motor / generator of a hybrid transmission is provided is similarly provided.

Description

technical field [0001] The present invention relates generally to methods and apparatus for cooling and lubricating hybrid transmission off-axis motor / generators. Background technique [0002] A conventional electrically variable transmission (EVT) includes two electric machines such as motor / generators located on the transmission input shaft. The two electric machines on the input shaft of the transmission limit the flexibility of the assembly design of this machine. It may therefore be desirable to relocate one of the two electric machines to an off-axis location, especially in the case of a strong hybrid system with large electric machines. It is well known that electromechanical machines such as motor / generators require cooling and lubrication in order to maintain optimum performance. Contents of the invention [0003] A method for lubricating an off-axis motor / generator for a hybrid transmission is provided. The transmission case at least partially defines a manifo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/16F16N21/00H02K9/19F16H57/04
CPCF16H57/0421Y02T10/6239F16H57/0412B60K2001/003H02K9/19B60K6/445F16H57/0434B60K6/26F16H57/043B60K6/405Y10T74/2189Y02T10/62
Inventor K·A·米勒H·索乌尔
Owner GM GLOBAL TECH OPERATIONS LLC