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Hydraulic control unit for limited slip differential

A technology of limited slip differential and control unit, which is applied in the direction of control device, differential transmission device, transmission device control, etc.

Active Publication Date: 2019-04-02
EATON INTELLIGENT POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some embodiments, it is challenging to mount the hydraulic delivery device relative to the differential and / or housing that receives the differential
Additionally, it can be challenging to connect the hydraulic coupling between the hydraulic delivery and the limited slip differential

Method used

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  • Hydraulic control unit for limited slip differential
  • Hydraulic control unit for limited slip differential
  • Hydraulic control unit for limited slip differential

Examples

Experimental program
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Embodiment Construction

[0023] First refer to figure 1 , shows a hydraulic control unit constructed according to one embodiment of the present invention and is generally indicated by reference numeral 10 . As will be understood herein, the hydraulic control unit 10 according to the present invention provides a single unit mountable against or relative to the axle housing 12 . This configuration allows for simple assembly and setting. Generally speaking, the hydraulic control unit 10 can be connected via the hydraulic coupling 20 ( Figure 5 ) delivers hydraulic fluid to the limited slip differential 14 housed in the axle housing 12 . The limited slip differential 14 may be an electronic limited slip differential having a clutch 22 and pistons (not specifically shown).

[0024] The limited slip differential 14 is operable to drive a pair of half shafts 30 , 32 connected to a corresponding pair of drive wheels (not shown). In general, the limited slip differential 14 acts as a conventional open dif...

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PUM

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Abstract

The invention relates to a hydraulic control unit for delivering hydraulic fluid to a limited-slip differential, which includes a hydraulic control unit casing, a sump and a motor. The hydraulic control unit housing has an accumulator housing portion housing a biasing assembly and a piston. The sump is defined in the hydraulic control unit housing and at least partially occupies a common space with the accumulator housing portion. The motor is configured to pump fluid into an accumulator chamber of the accumulator housing portion. Fluid pumped into the accumulator housing portion at least partially contracts the biasing assembly and directs a precharge into the hydraulic control unit. The biasing assembly is configured to extend and urge the piston in a first direction, thereby causing fluid to be communicated from the hydraulic control unit into the limited slip differential.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application No. 61 / 978,413, filed April 11, 2014, and US Patent Application No. 29 / 508,563, filed November 7, 2014. The disclosures of the aforementioned applications are incorporated herein by reference. technical field [0003] The present invention relates generally to limited slip differentials, and more particularly to hydraulic control units for delivering hydraulic fluid to limited slip differentials. Background technique [0004] A differential is provided on the vehicle to allow the outside drive wheel to spin faster than the inside drive wheel during a turn while both drive wheels continue to receive power from the engine. While differentials are useful when cornering, they can allow the vehicle to lose traction, for example, on snow or mud or other slippery media. If either drive wheel loses traction, it will turn at a high rate, while the other wheel may no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H48/20F16H61/423
CPCF16H61/12F16H48/32F16H48/20F16H61/423
Inventor D·P·费希尔A·N·埃德勒S·M·贝赛默J·A·厄施
Owner EATON INTELLIGENT POWER LTD