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System and method for activating a secondary axle

A technology for auxiliary vehicles and axles, which is applied in the direction of power devices, vehicle components, electric power devices, etc.

Pending Publication Date: 2021-05-28
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Auxiliary actuators can be de-energized when not required for vehicle propulsion, however, the actu

Method used

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  • System and method for activating a secondary axle
  • System and method for activating a secondary axle
  • System and method for activating a secondary axle

Examples

Experimental program
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Embodiment Construction

[0010] Embodiments of the disclosure are described herein. It should be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As will be understood by persons of ordinary skill in the art, various features shown and described with reference to any of the figures may be combined with features shown in one or more of the other figures to produce features not explicitly shown or described. the embodiment. Combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications o...

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PUM

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Abstract

The disclosure provides a system and method for activating a secondary axle. A vehicle includes a primary axle powered by an actuator and a secondary axle powered by a motor. The secondary axle includes a differential, first and second halfshafs, first and second wheels, a first electric clutch selectively coupling the first wheel to the first halfshaft, and a second electric clutch selectively coupling the second wheel to the second halfshaft. A vehicle controller is programmed to: responsive to a request to activate the secondary axle and a first speed difference between the first and second wheels being less than a first threshold, engage the first and second clutches at a same time, and, in response to the request to activate the secondary axle and the first speed difference between the first and second wheels exceeding the first threshold, engage one of the clutches and then subsequently engage the other of the clutches once the one of the clutches is fully engaged.

Description

technical field [0001] The present disclosure relates to all wheel drive electric vehicles, and more particularly to controlling activation of auxiliary axles. Background technique [0002] The vehicle may include an all wheel drive system in which a primary transaxle is powered by a primary actuator and an auxiliary transaxle is powered by an auxiliary actuator. The auxiliary actuator can be de-energized when not required for vehicle propulsion, however, the actuator and other components of the auxiliary drive may continue to rotate, creating a loss of spin. The primary and secondary drives may include associated differentials. A differential allows the left and right wheels to spin at different speeds for easier turning. Known differentials include open differentials, limited slip differentials and locking differentials. Contents of the invention [0003] According to one embodiment, a vehicle includes a primary axle powered by an actuator and an auxiliary axle powere...

Claims

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Application Information

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IPC IPC(8): B60K17/02B60K17/16
CPCB60K17/02B60K17/165B60K1/00B60K1/02B60K23/0808B60K2023/0858B60K17/354F16D27/118F16D28/00B60W10/119B60K17/356B60W10/02B60K23/08B60W10/08
Inventor 乔斯·委拉斯凯兹·阿尔坎塔尔约瑟夫·杰伊·托雷斯马修·约翰·谢尔顿
Owner FORD GLOBAL TECH LLC