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torque vectoring differential

A differential and clutch technology, applied in the field of differential assemblies, can solve problems such as loss of traction

Active Publication Date: 2019-01-29
EATON INTELLIGENT POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although differentials can be used for cornering, they can cause the vehicle to lose traction, for example in snow or mud or other slippery media

Method used

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  • torque vectoring differential
  • torque vectoring differential
  • torque vectoring differential

Examples

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Embodiment Construction

[0028] Examples of the present disclosure may provide improved torque vectoring capabilities over currently available systems with more than one clutch. Current systems have undesirable characteristics if applied to a vehicle with only one drive axle, such as failure modes associated with clutch loss and the need to adjust clutch torque when the vehicle is cornering in order to allow differential action. Examples of the present disclosure can alleviate these problems by maintaining the differential gear set assembly and adding a clutch that is normally engaged and remains engaged when actuator power is lost, such as a spring applied clutch. This additional clutch selectively couples the pinion mount to the differential mount and is releasable during a torque vectoring event to allow independent modulation of wheel torque through the clutch associated with each wheel. A clutch associated with a particular wheel may be normally disengaged and remain disengaged when actuator powe...

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Abstract

A torque vectoring differential constructed in accordance with the present disclosure includes a differential mount that is rotatable about an axis. The pinion mount may have at least one pinion mounted for rotation on at least a portion of the pinion mount. The first side gear and the second side gear may be meshed for engagement with at least one pinion gear. The first side gear is engageable for common rotation with the first axle. The second side gear is engageable for common rotation with the second axle. The first clutch is operable to selectively lock the differential carrier and the pinion carrier relative to each other for rotation about the axis. The second clutch is operable to selectively lock the differential mount to the first side gear. The third clutch is operable to selectively lock the differential mount to the second side gear.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application No. 62 / 069,913, filed October 29, 2014, and US Patent Application No. 62 / 119,484, filed February 23, 2015. The entire content of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates generally to differential assemblies, and more particularly to a differential configured to apply torque vectoring among the wheels of a vehicle. Background technique [0004] Differentials are provided on vehicles, for example, to allow the outer drive wheels to spin faster than the inner drive wheels during cornering while both drive wheels continue to receive power from the engine. While differentials are useful for cornering, they can cause the vehicle to lose traction in, for example, snow or mud or other slippery media. If either drive wheel loses traction, it will turn at a high rate and the other wheel may no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K17/16F16H48/20F16H48/36
CPCB60K17/165F16H48/20F16H48/36F16H2048/368B60K23/04F16H48/30
Inventor 道格拉斯·休斯帕亚姆·纳加什塔布瑞兹詹姆斯·K·斯普林布兰得利·赖特
Owner EATON INTELLIGENT POWER LTD