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

Rotating planetary gear carrier lubrication device

A planetary carrier, planetary gear technology, applied in gear lubrication/cooling, mechanical equipment, belt/chain/gear, etc., can solve problems such as the inability to eliminate axial space

Inactive Publication Date: 2012-12-26
GM GLOBAL TECH OPERATIONS LLC
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of this arrangement and the complexity of automatic transmissions, it is often not possible to eliminate all the axial space between the faces of the thrust bearing when it is mounted between components within the transmission

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
  • Rotating planetary gear carrier lubrication device
  • Rotating planetary gear carrier lubrication device
  • Rotating planetary gear carrier lubrication device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] The following detailed description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses.

[0053] refer to figure 1 , exemplifies a part of an automatic transmission incorporating the present invention and is indicated as a whole by reference numeral 10 . Automatic transmission 10 includes a centrally disposed drive shaft 12 defining a central axis of transmission 10 about which all major components rotate. The drive shaft 12 typically and preferably includes a coaxial lubricant passage 14 containing pressurized transmission fluid (oil) from a hydraulic pump (not shown) which is distributed to, among other things, the various components in the gearbox 10 to lubricate these components. The drive shaft 12 may be connected to a first sun gear 18 in a first planetary gear assembly 20 by an interengaging spline set 16 . Concentrically disposed about the drive shaft 12 is a first bushing or tubular drive member 24 that carries...

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

A planetary gear assembly having improved planet gear lubrication includes a thrust bearing assembly mounted to the planet gear carrier which provides a friction reducing interface between the carrier and a hub or stationary transmission member. A lubrication dam located radially outwardly of the thrust bearing assembly collects transmission fluid (oil) that has been supplied through a centrally disposed shaft and driven to and past the thrust bearing and into the dam by centrifugal force. Transmission fluid collecting within the dam and between the thrust bearing assembly and the planet gear carrier generates a biasing force which drives the thrust bearing assembly away from the planet gear carrier, thereby ensuring that the bearing position is not indeterminate and positively locating the thrust bearing assembly and providing an annular flow path for the transmission fluid which is then directed into a plurality of axial passageways in stub shafts which support the planet gears. At least one radial passageway in each stub shaft provides lubricating transmission fluid to a bearing assembly disposed between the stub shaft and the planet gear.

Description

technical field [0001] The present disclosure relates to planetary gear assemblies commonly used in automatic transmissions for motor vehicles, and more particularly to a method for improving planetary gears in planetary gear assemblies commonly used in automatic transmissions for motor vehicles Lubricated equipment. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] Most automatic transmissions for modern motor vehicles include a plurality of planetary gear assemblies arranged in series within a housing. The input shaft drives a torque converter, which in turn drives elements in a first of the plurality of planetary gear assemblies. Typically, the last element in the planetary gear assembly is connected to and drives the output shaft. [0004] In an automatic transmission, in addition to the planetary gear assemblies are the various fixed co...

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): F16H57/08F16H57/04
CPCF16H57/0479F16H57/0484F16H57/08F16H57/04
Inventor C.W.路易斯B.伯格曼
Owner GM GLOBAL TECH OPERATIONS LLC