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

Bearing durability test apparatus and method

A test method and durability technology, applied in mechanical bearing testing, measuring devices, testing of mechanical components, etc.

Inactive Publication Date: 2011-08-24
AFTON CHEMICAL
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other testing procedures are available for testing lubricants under various conditions, but none are considered to adequately address bearing durability, especially in differentials

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
  • Bearing durability test apparatus and method
  • Bearing durability test apparatus and method
  • Bearing durability test apparatus and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 A schematic diagram of a bearing durability test rig 10 is shown. The test rig includes an engine 12, a transmission 14, and a drive shaft coupled to a differential 18 and a torque gauge 16 supporting axle sections 20 and 22 that are connected to dynamometers 24, 26, respectively. 24 , 26 each have a respective load cell 28 , 30 . Computer 31 controls at least some of these components during the test run and receives input from components such as torque meter 16 and temperature sensor 21 . A cooling system 23 such as a water cooler may be used to maintain or at least prevent the differential from exceeding a set temperature.

[0020] figure 1 A schematic diagram of the differential 18 is shown in detail, with bearings 32 supporting a pinion 34 contacting a ring gear 36 , and the carrier and differential 38 supported by corresponding bearings 40 , 42 . The differential 18 transmits power provided from the drive shaft 16 along the axle portions 20 , 22 . The...

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 invention relates to bearing durability test apparatus and method. Concretely, a bearing durability test for automotive axle lubricant has been devised to assess lubricant requirements for bearing durability. Although various tests exist for differential lubricants to test for gear wear and other factors, the applicant has assessed a need and met that need with a bearing durability test and test rig apparatus.

Description

technical field [0001] The present invention relates to a testing apparatus and method of operation for evaluating the durability of bearings, primarily in limited slip differentials, particularly bearings in differentials that can pass current gear wear testing procedures. Background technique [0002] Currently, there are many automotive tests that target the performance of specific automotive components. There is an L-37 standard test and an L-37 low temperature variant. These tests are also known as ASTM D-6121 and are generally used to evaluate the load wear and extreme pressure characteristics of gear lubricants in hypoid axles under low speed high torque operating conditions. [0003] A typical L-37 test consisted of a hypoid axle utilizing an automatic transmission connected through a driveshaft to a V-8 gasoline-powered engine. The load on the axle is controlled by two large dynamometers attached to each end of the axle. The high-speed, low-torque break-in occurr...

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): G01M13/04
CPCG01M13/045
Inventor C·科格林
Owner AFTON CHEMICAL