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Hydraulically actuated electronic limited slip differential for front wheel drive vehicles

A technology of differentials and actuators, used in vehicle components, differential transmissions, transmissions, etc.

Inactive Publication Date: 2009-07-08
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar disadvantages occur under dynamic conditions at runtime, especially at low μ or so-called split μ driving conditions

Method used

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  • Hydraulically actuated electronic limited slip differential for front wheel drive vehicles
  • Hydraulically actuated electronic limited slip differential for front wheel drive vehicles
  • Hydraulically actuated electronic limited slip differential for front wheel drive vehicles

Examples

Experimental program
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Effect test

Embodiment Construction

[0010] figure 1 and figure 2 An actuation system for a limited slip differential assembly is provided. The actuation system is indicated generally by reference numeral 10 .

[0011] The differential assembly 16 includes the basic elements of typical differential assemblies including a differential case 24 driven by the driveline output of the vehicle via a gear or chain drive (not shown). out) to drive. A pair of planet gears 26 are rotatable about a common differential shaft mounted to the differential case. These planetary gears 26 mesh with a pair of side gears 28 which in turn are splined or otherwise connected to a pair of Half shafts 31,33. The aforementioned components of the differential assembly 16 are common elements of so-called open differentials. Front-wheel drive vehicles can also use a differential, which is a planetary gearset.

[0012] Under certain low traction conditions it may be desirable to lock or modulate the differential assembly 16 to provide ...

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PUM

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Abstract

A differential system for a front wheel drive vehicle. The differential system includes a differential carrier (24), an actuator housing {44}, an intermediate shaft (32). a clutch pack (42). and a piston (40). The differential carrier (24) houses a differential assembly (16) configured to drive a right and left axle shaft. The actuator housing (44) is configured to rotate in conjunction with the differential carrier (24). The intermediate shaft (32) extends through the actuator housing (44). The clutch pack (42) has a first set of clutch plates (46) that engage the actuator housing (44) and a second set of clutch plates (48) that engage the intermediate shaft (32). The piston (40) compresses the first and second set of clutch plates {46, 48} thereby frictionaiiy coupling the differential carrier (24) to the intermediate shaft (32) and thus locking or modulating the differential.

Description

technical field [0001] The present invention relates to a limited slip differential assembly particularly adapted for front wheel drive vehicle applications. Background technique [0002] Conventional rear wheel drive motor vehicles provide wheel drive torque through a propshaft connected to left and right axles via a differential. Front-wheel drive vehicles are connected to the front-wheel drive axles through a differential driven by a transaxle. Four-wheel-drive and so-called all-wheel-drive vehicles also use a differential to drive the front and rear axles. The differential allows a difference in wheel speed to occur between the left and right driven axles. The earliest and most basic differential designs are known as open differentials in which they provide constant torque between the two axles and do not operate to control the relative rotational speed between the axles. A well-known disadvantage of open differentials occurs when one of the driven wheels engages a ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K23/04F16H48/30
CPCF16H48/22F16H48/30F16H2048/204F16H48/08
Inventor R·凯勒E·C·桑德斯特罗姆
Owner BORGWARNER INC
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