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Differential with inclined lubrication ports

A differential and port technology, applied in the direction of differential transmission, gear lubrication/cooling, components with teeth, etc., can solve the problems that cannot be reduced in size, reduce the flow rate of lubricating oil, and endanger the performance of differential components, etc.

Inactive Publication Date: 2008-05-07
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ports can neither be removed nor reduced in size, as the smaller size will reduce the flow rate of lubricating oil into the differential case, potentially compromising the performance of the differential components

Method used

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  • Differential with inclined lubrication ports
  • Differential with inclined lubrication ports
  • Differential with inclined lubrication ports

Examples

Experimental program
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Embodiment Construction

[0020] Referring first to FIG. 1 , a differential mechanism 10 for differentially transmitting torque in the form of rotational power to left and right half shafts 11 includes a housing 14 made of metal, preferably cast iron, and a housing 14 made of metal, preferably cast iron. Helical gear teeth 18 form and are drivably connected to ring gear 16 of an external power source. Ring gear 16 , housing 14 and half shafts 11 , 12 rotate about a first axis 20 . Bevel pinions 22 , 24 are drivably connected to housing 14 by shafts, revolve about axis 20 , and rotate about the axis of shaft 26 . The right bevel gear 28 and the left bevel gear 30 mesh continuously with the bevel pinions 22 , 24 . The side bevel gears 28, 30 are driveably connected to the right half shaft 12 and the left half shaft 11, respectively, each half shaft being drivably connected to a wheel.

[0021] The right half shaft 12 is supported to rotate on a bearing 32 and a bearing 36 , wherein the bearing 32 is in...

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PUM

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Abstract

Apparatus for transmitting torque in a vehicular differential assembly includes a ring gear surrounding a first axis about which the housing rotates; and a differential housing secured to the ring gear, including a wall surrounding the first axis and formed with a port spaced mutually about the first axis and extending through a thickness of the wall, a periphery of the port being defined by first and second opposed straight edge portions, each straight edge portion located on an opposite side of a second axis, and an arcuate corner portion located at each end of each straight edge portion, the second axis being inclined with respect to the first axis in an angular range from 20 degrees to 50 degrees.

Description

technical field [0001] The present invention relates generally to an automotive differential mechanism and, more particularly, to a differential housing having a series of lubricant ports through its wall thickness. Background technique [0002] The differential mechanism differentially transmits rotational power from an external power source, such as an internal combustion engine or an electric motor, to an output shaft driven by a ring gear. A housing made of metal mounted on the ring gear forms a chamber containing a small bevel gear drivably connected to the housing 14 by a shaft, a right-hand bevel gear in continuous mesh with the bevel pinion and Left bevel gear. The side bevel gears are driveably connected to the right and left output shafts, each shaft being driveably connected to a wheel. [0003] The housing chamber is surrounded by a wall having a thickness and a plurality of ports formed in the wall which are spaced from each other about the axis of rotation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/02F16H57/04F16H48/00
CPCF16H2048/385F16H57/0427F16H57/0483F16H48/08F16H48/40F16H57/04F16H57/045
Inventor 劳伦斯·A·多伊奇史蒂文·G·托马斯
Owner FORD GLOBAL TECH LLC
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