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Damped axle shaft

A bridge and damping technology, applied in the direction of axles, shafts, wheels, etc., can solve the problems of lack of damping, enlarging axle shaft packaging, quality and cost, and not solving the core problem of vibration

Active Publication Date: 2009-08-12
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the diameter of the axle shaft leads to problems related to additional packaging, mass and cost, while not solving the core problem of directly damping the oscillations associated with power jumps, namely: during severe longitudinal acceleration or deceleration , the lack of damping to absorb the energy brought into the driveline by the tire's unfavorable damping characteristics

Method used

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  • Damped axle shaft
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Embodiment Construction

[0036] Referring now to the accompanying drawings, Figure 2-5 Various examples of damped axle shafts 100 according to the present invention are described, wherein throughout the drawings, the damped axle shafts 100 are inherently damped in close proximity to the source of oscillation, which is typically the torsion of the axle shaft during power jumps. vibration response to the accompanying tire engagement with the road surface.

[0037] A damped axle shaft 100 generally includes an inner shaft part 102 serving as an axle shaft 104 having a first torsion, an outer shaft part 106 in the form of a cylindrical axle tube 108 and at least one damping ring 110 rigidity, said cylindrical axle tube 108 is concentrically arranged with respect to the axle shaft and generally has a common end with the axle shaft (the term "substantially common end" means In the case of splines or other rotating drive interfaces generally common ends) and having a second torsional rigidity, the damping ...

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Abstract

An axle shaft which is inherently damped very near the source of the oscillation, via inner and outer axle components with a damping ring that couples between them, wherein the inner component which serves as the axle shaft, has a torsional stiffness different from (i.e., less than) that of the outer component which serves as a concentrically disposed axle sleeve. Under torsional load, both the inner and outer components transmit the torsional load, wherein the inner component twists more than the outer component, resulting in relative displacement therebetween. The damping ring experiences the relative displacement and consequently damps energy of the twist, whereby powerhop and associated driveline disturbances, such as for example axle shutter, are reduced.

Description

technical field [0001] The present invention relates generally to drive axle shafts for motor vehicles, and more particularly to damped axle shafts having inner and outer components that are mutually torsional vibration damped. Background technique [0002] A motor vehicle with drive shaft independent suspension comprising a pair of axle shafts (also known as split axles or half axles), one axle shaft for each wheel, as issued to Anderson on October 13, 1987 and This is described by way of example only in US Patent 4,699,235, assigned to the assignee of the present invention, which is hereby incorporated by reference. [0003] now refer to figure 1 , the split axle drive system of patent 4699235 is briefly described for reference purposes, it being understood that the present invention can be applied to two-wheel drive or four-wheel drive systems. [0004] Shown is a schematic plan view of a part-time four wheel drive vehicle including an internal combustion engine 10, a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B35/14B60K17/34
CPCA61K31/05A61K31/573A61K31/135A61K31/4178A61K45/06A61K31/5517F16C3/02A61K31/4468A61K31/137A61K31/661A61K31/167F16F7/04A61K31/4164F16F15/10
Inventor A·L·利斯西奥
Owner GM GLOBAL TECH OPERATIONS LLC