CN110081144A - Hydraulic control unit for limited-slip differential - Google Patents
Hydraulic control unit for limited-slip differential Download PDFInfo
- Publication number
- CN110081144A CN110081144A CN201910167227.8A CN201910167227A CN110081144A CN 110081144 A CN110081144 A CN 110081144A CN 201910167227 A CN201910167227 A CN 201910167227A CN 110081144 A CN110081144 A CN 110081144A
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- Prior art keywords
- control unit
- hydraulic control
- hydraulic
- aperture
- limited
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/423—Motor capacity control by fluid pressure control means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Retarders (AREA)
Abstract
The present invention relates to a kind of hydraulic control units to limited-slip differential delivering hydraulic fluid comprising hydraulic control unit shell, collection slot, motor and hydraulic coupling.The hydraulic control unit shell has the accumulator housing section for accommodating bias assembly and piston.The collection slot is limited in the hydraulic control unit shell and at least partly occupies common space with accumulator housing section.The motor structure is at pumping fluid into the accumulator chamber of the accumulator housing section.The fluid being pumped into the accumulators chamber of the accumulator housing section makes the bias assembly at least partly shrink and import pre- charge in the hydraulic control unit.The bias assembly is configured to stretch and drive along first direction to promote the piston, is sent in the limited-slip differential so as to cause fluid from the hydraulic control unit.
Description
The application be the applying date be on April 9th, 2015, application No. is 201580018880.8, invention and created name be " use
In the hydraulic control unit of limited-slip differential " Chinese invention patent application divisional application.
Intersection reference to related application
This application claims the U.S. Patent application No.61/978,413 submitted on April 11st, 2014 and at 2014 11
The equity for the U.S. Patent application No.29/508,563 that the moon is submitted on the 7th.The disclosure of above-mentioned application is incorporated herein by reference
In.
Technical field
Present invention relates generally to limited-slip differential, relate more specifically to the hydraulic control to limited-slip differential delivering hydraulic fluid
Unit processed.
Background technique
Differential mechanism is set on vehicle to allow outside driven wheel to continue to come from two driving wheels during turning
Rotate faster than interior side drive wheel while the power of engine.Although differential mechanism is useful in turning, they can allow vehicle
Tractive force for example is lost on snowfield or muddy ground or other smooth media.If any driving wheel loses tractive force, it will
It is rotated with high-speed, and another wheel may not rotate.In order to solve this situation, limited-slip differential is had developed will move
Power is transferred to the driving wheel not rotated from the driving wheel for having lost tractive force and having rotated.
Electronic control type limited-slip differential may include between output shaft of the clutch of hydraulic actuation to limit differential mechanism
Differential speed rotation.In some configurations, hydraulic conveyor be may be positioned to far from differential mechanism.In some embodiments, relative to difference
Fast device and/or the shell installation hydraulic conveyor for receiving differential mechanism are challenges.In addition, hydraulic coupling is connected to liquid
Pressing between conveying device and limited-slip differential can be challenge.
The purpose of background description is in order to which context of the invention is substantially presented provided herein.The inventor signed at present
Work (for its degree described in the background technology part) and be described submission when do not constitute existing skill
The various aspects of art are neither be clearly considered nor be impliedly considered as the prior art for the present invention.
Summary of the invention
Hydraulic control unit to limited-slip differential delivering hydraulic fluid includes hydraulic control unit shell, collection slot (sump)
And motor.Hydraulic control unit shell has accumulator (accumulator) housing section for accommodating bias assembly and piston.Accumulation
Device housing section forms accumulator chamber together with piston.The collection slot is limited in the hydraulic control unit shell and at least
Partly common space is occupied with accumulator housing section.Motor structure is at the accumulator for pumping fluid into accumulator housing section
In chamber.The fluid being pumped into accumulator housing section shrinks bias assembly at least partly and by pre- charge (pre-
Charge it) imports in the hydraulic control unit.Bias assembly is configured to stretch along first direction and drives rush piston, to draw
Fluid is played to be sent in limited-slip differential from hydraulic control unit.
According to other feature, hydraulic control unit shell further includes with the first receiving opening for limiting first diameter
The hydraulic control unit casing mounting structure of mouth and the second receiving aperture.Limit the of the second diameter smaller than first diameter
A pair of first fastener couples hydraulic control unit with the axle housing for accommodating limited-slip differential.Hydraulic coupling can have by liquid
The first end that first limited in voltage-controlled unit housings processed receives aperture to receive.The hydraulic coupling can have be configured to by
The second end that second limited in hydraulic port associated with limited-slip differential receives aperture to receive.At least one O-ring
It may be provided at around the second end sealingly engaged with the second receiving aperture.Hydraulic coupling may be configured to extend across axle housing
In the hydraulic coupling that limits receive aperture.
According to other features, axle housing can limit the internal diameter bigger than the outer diameter of hydraulic coupling.Hydraulic coupling is in liquid
Pressure control unit is allowed to be located at multiple positions of the internal diameter relative to axle housing during being assemblied on limited-slip differential, with suitable
Answer corresponding multiple positions of the differential mechanism relative to axle housing.First installing component and the second installing component can respectively include (i)
Three receive aperture and the 4th receiving aperture, and (ii) first to install access and the second installation access.Second pair of first fastener
Third, which can be extended respectively through, receives aperture and the 4th to receive aperture, so that hydraulic control unit be coupled with axle housing.
According to other feature, a pair of second fastener can extend across the first installation access and the second installation access and with
Hydraulic control unit shell is matched here to couple the first installing component with the second installing component.Hydraulic control unit can be
It is pre-filled before coupling with axle housing with hydraulic fluid.Bias assembly may also include the first biasing portion with the first spring rate
Part and the second biasing member with second spring rigidity.First spring rate can be different from second spring rigidity.
The hydraulic control unit constituted to limited-slip differential delivering hydraulic fluid and according to another embodiment of the present invention
Including hydraulic control unit shell, collection slot, motor and hydraulic coupling.Hydraulic control unit shell can have receiving bias assembly
With the accumulator housing section of piston.Accumulator housing section forms accumulator chamber together with piston.Collecting slot can be in hydraulic control unit
It is limited in shell.Collection slot at least partly can occupy common space with accumulator housing section.Motor may be configured to fluid pump
It is sent in the accumulator chamber of accumulator housing section.Hydraulic coupling can have (i) by limiting on hydraulic control unit shell
The first end that first out receives aperture to receive, and (ii) are configured to by the hydraulic port upper limit associated with limited-slip differential
The second end that second made receives aperture to receive.The fluid being pumped into the accumulator chamber of accumulator housing section makes bias group
Part at least partly shrinks and imports pre- charge in the hydraulic control unit.Bias assembly is configured to stretch along first direction
Rush piston is opened up and driven, is sent in limited-slip differential so as to cause fluid from hydraulic control unit.
According to other feature, at least one O-ring may be provided at the second end sealingly engaged with the second receiving aperture
Around.Hydraulic coupling may be configured to extend across the hydraulic coupling receiving aperture limited in axle housing.Axle housing can limit
The internal diameter bigger than the outer diameter of hydraulic coupling out.Hydraulic coupling quilt during hydraulic control unit is assemblied on limited-slip differential
Allow to be located at multiple positions of the internal diameter relative to axle housing, to adapt to corresponding multiple positions of the differential mechanism relative to axle housing
It sets.
According to other features, hydraulic control unit shell may also include to be received with limit first diameter first
The hydraulic control unit casing mounting structure in aperture and the second receiving aperture.Limit the second diameter smaller than first diameter
First pair of first fastener couples hydraulic control unit with the axle housing for accommodating limited-slip differential.First installing component and the second peace
Dress component can respectively include (i) third and receive aperture and the 4th that aperture, and (ii) first is received to install access and the second installation
Access.Second pair of first fastener extends respectively through third and aperture and the 4th is received to receive aperture, thus by hydraulic control list
Member couples with axle housing.Third receives aperture transverse to the first installation access.4th receives aperture transverse to the second installation access.
According to other features, a pair of second fastener can extend across the first installation access and the second installation access and with
Hydraulic control unit shell is matched to couple the first installing component and the second installing component here.Hydraulic control unit can with
It is pre-filled before axle housing connection with hydraulic fluid.Bias assembly may also include the first biasing member with the first spring rate
With the second biasing member with second spring rigidity.First spring rate can be different from second spring rigidity.
Detailed description of the invention
According to the detailed description and the accompanying drawings, invention will be more fully understood, in the accompanying drawings:
Fig. 1 is to constitute and be shown as according to one embodiment of present invention the hydraulic control unit being assembled on axle housing
Front perspective view；
Fig. 2 be along 2-2 interception Fig. 1 hydraulic control unit sectional view；
Fig. 3 be along 3-3 interception Fig. 2 hydraulic control unit sectional view；
Fig. 4 is the detail drawing of the attachment area of the hydraulic control unit of Fig. 1；
Fig. 5 is the sectional view for the hydraulic control device for intercepting along the line 5-5 of Fig. 2 and intercepting at high pressure port, is shown
Anti-rotation component；
Fig. 6 is the decomposition perspective view of hydraulic control unit and axle housing；And
Fig. 7 is the front perspective view of the hydraulic control unit of Fig. 1, and is shown as decomposing various fasteners for showing
Out.
Specific embodiment
With reference first to Fig. 1, the hydraulic control unit constituted according to one embodiment of present invention and generally is shown
It is indicated with appended drawing reference 10.As in text it will be understood that, hydraulic control unit 10 according to the present invention provide can against or it is opposite
In the individual unit of (relative to) axle housing 12 installation.The configuration allows simple assembling and setting.In general, hydraulic
Control unit 10 can be through hydraulic coupling 20 (Fig. 5) to 14 delivering hydraulic fluid of limited-slip differential being contained in axle housing 12.Limit
Slip differential 14 can be the electronic limited slip differential device with clutch 22 and piston (not specifically illustrated).
Limited-slip differential 14 be operable to a pair of of semiaxis 30 that driving connects with a pair of corresponding driving wheel (not shown),
32.In general, limited-slip differential 14 is used as traditional open differential during usual operating condition, until occurring to need to bias to turn
The event of square.When detecting or expecting the loss of tractive force, clutch 22 can be selectively activated into generation for the shape
The just bias rate of condition.
Limited-slip differential 14 may also include the differential gear component 24 configured in differential carrier 26, work to allow
Semiaxis 30,32 is rotated with friction speed.Differential gear component 24 may include being mounted to and semiaxis 30 and 32 (and driving wheel) one
Play a pair of of side gear (not specifically illustrated) of rotation.In the open type configuration being described below, differential gear component works to permit
Perhaps semiaxis 30 and 32 is rotated with friction speed.
Clutch 22 couples drive shaft output section with differential gear component 24.Clutch 22 may include clutch pack
(not specifically illustrated), the clutch pack have the multiple annular slabs being staggered between multiple annular friction disks.Multiple rings
Shape plate and annular friction disk are staggered between each other and act on into when clutch 22 is in its open position with basic
Upper discontiguous relationship rotation is by each other.However, it should be appreciated by those skilled in the art terms used herein
" not contacting " is opposite and is not intended to certain expression annular slab and annular friction disk in the case where clutch 22 is in the open state
When absolutely not contact.Annular slab and annular friction disk can be axially moveable into frictional engagement relative to each other, thus in clutch
22 reduce the relative rotation between annular slab and annular friction disk when being in closure or part closed configuration.In this way, working as clutch
22 be in its closed position when, side gear and semiaxis and driving wheel rotate together.
Clutch 22 is operable to that side gear is allowed to revolve independently of one another (for example, with friction speed) under open configuration
Turn.Clutch 22 can also wherein side gear together or partly together (also that is, dependently) for example with substantially the same
It is operated in the closure or part closed configuration of speed rotation.Clutch 22 is hydraulic clutch, is utilized from hydraulic control list
The pressurized hydraulic fluid that member 10 is provided through hydraulic fluid connector 20 acts on piston in opening, closure and part closure structure
Clutch pack is selectively activated between type.It will be understood that above-mentioned limited-slip differential 14 is only exemplary.In this respect,
Hydraulic control unit 10 can be used for actuator (piston etc.) delivering hydraulic fluid to any limited-slip differential configuration.
Referring now generally to Fig. 1-7, hydraulic control unit 10 will be described in further detail.Hydraulic control unit 10 is generally
It may include hydraulic control unit shell 50, which has accumulator housing section 54 and shell manifold portion
56.Accumulator housing section 54 can limit accumulator chamber 64 together with piston 67.Accumulator housing section 54 accommodates the first biasing portion
Part 66A and the second biasing member 66B and piston 67.First biasing member 66A and the second biasing member 66B can be led in the text
Referred to as bias assembly 68.First biasing member 66A has the first spring rate, and the second biasing member 66B has second spring
Rigidity.First spring rate and second spring rigidity are cooperated into together provides desired spring rate to bias assembly 68.Such as text
In will be apparent, fluid is pumped into accumulator chamber 64 at 67 rear of piston to cause piston 67 towards the first biasing portion
Part 66A and the second biasing member 66B translation.
In hydraulic control unit 10 of the invention, accumulator chamber 64 accommodates biasing member 66A, 66B and also provides
Hydraulic collection slot 69 (Fig. 3).This configuration allows the assembling space reduced.Shell manifold portion 56 can be limited and is configured to provide to text
Disclosed in various sensors close various fluid passages.Hydraulic control unit 10 may also include motor 70, which can
Couple with hydraulic control unit shell 50.
Hydraulic control unit 10 may also include clutch plunger pressure sensor 72 (Fig. 5), accumulator pressure sensor 74
With three-dimensional ratio adjusting valve 76.Clutch plunger pressure sensor 72 can be threadedly engaged by hydraulic control unit shell 50 ground or with
Other way is securely received.Clutch plunger pressure sensor 72 may be configured to the pressure at the piston of measurement limited-slip differential 14
Power.Accumulator pressure sensor 74 can be threadedly engaged ground by hydraulic control unit shell 50 or securely be connect in other ways
It receives.Accumulator pressure sensor 74 can be configured to measure the pressure in accumulator chamber 64.Three-dimensional ratio adjusting valve 76 can be with liquid
Voltage-controlled unit housings processed 50 securely couple.Three-dimensional ratio adjusting valve 76 may be configured to adjust the hydraulic control unit shell of one
Fluid pressure in 50.
Motor 70 can operate piston pump or gerotor gear assembly and can routinely constitute.Gerotor gear
Component may include gerotor internal gear and gerotor external gear.The operation of gerotor gear assembly can be often
Rule, wherein the relative rotation of gear oil pump internal gear and external gear can cause in being contained in hydraulic control unit shell 50
Pump action on fluid.In the embodiment using piston pump, piston pump can cause be contained in hydraulic control unit shell
The pump action on fluid in 50.It is (total with collection slot 69 that the pump action finally causes fluid to be pumped into accumulator chamber 64
Enjoy common space) in.The pump action finally causes fluid to be pumped into accumulator chamber 64.So, biasing portion
Part 66A, 66B at least partly shrink and will be in pre- charge import systems.In this respect, motor 70 does not need consistently to transport
Row.Biasing member 66A, the 66B of effect on plunger 67 can import Fluid pressure in limited-slip differential 12.It can in piston 67
It is provided with relief valve 80.Relief valve 80 can protect system by release fluid in the case where over-voltage fault.
Referring now specifically to Fig. 4-7, the other feature of hydraulic control unit shell 50 will be described.Hydraulic control unit shell
Body 50 can limit the receiving aperture 84 (Fig. 5) for being configured to receive hydraulic coupling 20.Hydraulic control unit shell 50 may include
The hydraulic control unit casing mounting structure indicated jointly with appended drawing reference 86.Hydraulic control unit casing mounting structure 86 is general
It may include the first receiving aperture 88A, the second receiving aperture 88B, the third receiving of receiving aperture 88C and the 4th aperture 88D.First connects
Receive aperture 88A, second receiving aperture 88B, third receive aperture 88C and the 4th receiving aperture 88D can limit first diameter D1
(Fig. 7).In an illustrated embodiment, third receives the receiving of aperture 88C and the 4th aperture 88D that can be respectively formed at installing component
On 90A and 90B.Installing component 90A and 90B can be limited respectively to be generally transverse to receive the orientation structure of aperture 88C and 88D
At installation access 92A and 92B.Install access 92A and 92B can with the connection aperture 94A formed in shell manifold portion 56 and
94B alignment.
First fastener 96A and 96B can extend across installation access 92A and 92B and can spiral shell with aperture 94A and 94B is connect
Line engagement ground cooperation.First fastener 96A and 96B couples installing component 90A and 90B with shell manifold portion 56.Second fastening
Part 100A, 100B, 100C and 100D, which can extend across, receives aperture 88A, 88B, 88C and 88D.Second fastener 100A, 100B,
100C and 100D can have outer diameter D 2 (Fig. 7).Outer diameter D 2 is less than first diameter D1, to allow the dislocation of period of assembly, in text
It will become apparent.
With particular reference to Fig. 6, axle housing 12 limits the first mounting hole 126, the second mounting hole 128, third mounting hole
130, the 4th mounting hole 132 and hydraulic coupling receive aperture 134.In general, hydraulic coupling receives aperture 134 to construct
At receiving hydraulic coupling 20.In an illustrated embodiment, hydraulic coupling receives aperture 134 to limit than hydraulic coupling 20
The big diameter D3 of diameter D4, to allow hydraulic coupling 20 to be suitably positioned in the hydraulic port provided by differential carrier 26
The receiving aperture 140 limited on 142.In addition, as described below, (shimming) can be in axle housing during calking for differential carrier 26
It is moved in 12.In this respect, the internal diameter D5 limited on axle housing 12 is greater than the hydraulic port 142 extended from differential carrier 26
Outer diameter D 6.In this respect, hydraulic control unit 10 will voluntarily navigate to hydraulic coupling and receive aperture 134 and receive aperture 140
In.Second fastener 100A can cooperate in which be threadedly engaged with the first mounting hole 126.Second fastener 100B can be with the second peace
Dress aperture 128 can cooperate with being threadedly engaged.Third fastener 100C can cooperate in which be threadedly engaged with third mounting hole 130.
Third fastener 100D can cooperate in which be threadedly engaged with the 4th mounting hole 132.
During differential assembly 14 is assembled in axle housing 12, limited-slip differential 14 is relative to axle housing 12 by calking to eliminate
The gap of predetermined amount.During calking, limited-slip differential 14 can be biased to left or right (toward and away from semiaxis 30 and 32).In this side
The position in face, the receiving aperture 140 limited in hydraulic port 142 will not be in same position always.Hydraulic coupling connects
Receive aperture 134 size (internal diameter D3) allow hydraulic coupling 20 suitably align, with still with hydraulic control unit shell 50
It is received in and is received in aperture 140 while connection.Hydraulic coupling 20 is assemblied in limited-slip differential 26 in hydraulic control unit 10
Upper period is allowed to be located at multiple positions relative to the internal diameter D3 of axle housing 12, to adapt to differential mechanism 26 relative to axle housing 12
Corresponding multiple positions.First O-ring 144 is sealably located between hydraulic coupling 20 and shell manifold portion 56.It is hydraulic
Connector may also include the second O-ring 146 being received in groove 148.Second O-ring 146 hermetically connects with aperture 140 is received
It closes.
Once acceptable alignment, the second fastening are suitably received by hydraulic port 142 and obtained to hydraulic coupling 20
Part 100A and 100B can be fastened to fixed position using the first mounting hole 126 and the second mounting hole 128 of axle housing 12.It is special
Not, receive aperture 88A and 88B that there is the diameter bigger than the second fastener 100A and 100B, so that shell manifold 56 be allowed to exist
It is opposite before second fastener 100A and 100B is fastened in corresponding first mounting hole 126 and the second mounting hole 128
In the transverse shifting of axle housing 12.Then second fastener 100C and 100D can be fastened to third mounting hole 130 and the 4th peace
It fills in aperture 132.Receive aperture 88C and 88D that there can be the diameter bigger than the second fastener 100C and 100D, it is tight with permission first
Firmware 100A and the second fastener 100B is relative to dislocation caused by the fixed shell manifold portion 56 of axle housing 12.
Hydraulic coupling 20, which can provide, inhibits the anti-of the rotation for being positioned around its axis of hydraulic coupling 20 after mounting
Revolving property.In one configuration, hydraulic control unit 10 can be pre-filled before coupling with axle housing 12 with hydraulic fluid.It can
Aperture 134 is received in hydraulic coupling 20 and hydraulic coupling and/or the interface between aperture 140 is received to implement sealing element
(not specifically illustrated).This sealing element can receive aperture 134 and/or receiving hydraulic coupling 20 is located in hydraulic coupling
It is pierced during movement in aperture 140.
In order to which the purpose for showing and describing has been provided for the above description to embodiment.This is not intended to exhaustion, Ye Feiyi
In the limitation present invention.The each element or feature of specific embodiment are generally not limited to this particular embodiment, but in applicable feelings
It is interchangeable and can be used in selected embodiment under condition, even if not specifically shown or described.It can also change in many ways
Become.These changes have been not regarded as a departure from the present invention, and all such modifications are intended to be included in the scope of the present invention.
Claims (9)
1. a kind of hydraulic control unit to limited-slip differential delivering hydraulic fluid, the hydraulic control unit include:
Hydraulic control unit shell, the hydraulic control unit shell have the accumulator shell for accommodating bias assembly and piston
Portion, the accumulator housing section form accumulator chamber together with the piston；
Collect slot, the collection slot be limited in the hydraulic control unit shell and at least partly with the accumulator shell
Portion occupies common space；
Motor, the motor structure is in the accumulator chamber for pumping fluid into the accumulator housing section；With
There is (i) to be connect by limit on the hydraulic control unit shell first for hydraulic coupling, the hydraulic coupling
Receive the first end of aperture receiving, and (ii) is configured to by limiting in hydraulic port associated with the limited-slip differential
Second second end for receiving aperture to receive；
Wherein, the fluid being pumped into the accumulator chamber of the accumulator housing section makes the bias assembly at least partly
It shrinks and imports pre- charge in the hydraulic control unit in ground, wherein the bias assembly is configured to stretch along first direction
It opens up and drives and promote the piston, be transmitted in the limited-slip differential so as to cause fluid from the hydraulic control unit.
2. hydraulic control unit according to claim 1 further includes at least one the O shape being arranged in around the second end
Circle, the second end are sealingly engaged with second receiving aperture.
3. hydraulic control unit according to claim 2, wherein the hydraulic coupling is configured to extend through in axle housing
In the hydraulic coupling that limits receive aperture.
4. hydraulic control unit according to claim 3, wherein the axle housing limits outer than the hydraulic coupling
The big internal diameter of diameter, wherein the hydraulic coupling is held during the hydraulic control unit is assembled to the limited-slip differential
Permitted to be located at multiple positions relative to the internal diameter of the axle housing, to adapt to the differential mechanism relative to the corresponding of the axle housing
Multiple positions.
5. hydraulic control unit according to claim 1, wherein the hydraulic control unit shell further include:
Hydraulic control unit casing mounting structure, the hydraulic control unit casing mounting structure, which has, limits first diameter
First aperture and second is received to receive aperture, and wherein, limit the of the second diameter smaller than the first diameter
A pair of first fastener couples the hydraulic control unit with the axle housing for accommodating the limited-slip differential.
6. hydraulic control unit according to claim 5 further includes the first installing component and the second installing component, difference
Aperture and the 4th is received to receive aperture, and (ii) first that access and the second installation access are installed including (i) third, wherein the
Two pair of first fastener extends respectively through the third and aperture and the described 4th is received to receive aperture, thus by the hydraulic control
Unit processed couples with the axle housing, wherein the third receives aperture transverse to the first installation access and the described 4th connects
Aperture is received transverse to the second installation access.
It further include extending through the first installation access and described the 7. hydraulic control unit according to claim 6
Two installation accesses simultaneously cooperate with the hydraulic control unit shell to couple first installing component and described second here
The second fastener of a pair of installing component.
8. hydraulic control unit according to claim 5, wherein the hydraulic control unit is coupling it with the axle housing
Before be pre-filled with hydraulic fluid.
9. hydraulic control unit according to claim 1, wherein the bias assembly further include:
The first biasing member with the first spring rate；With
The second biasing member with second spring rigidity, wherein first spring rate and the second spring rigidity are not
Together.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201461978413P | 2014-04-11 | 2014-04-11 | |
| US61/978,413 | 2014-04-11 | ||
| US29/508,563 | 2014-11-07 | ||
| US29508563 | 2014-11-07 | ||
| CN201580018880.8A CN106170645B (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for limited-slip differential |
| PCT/US2015/025096 WO2015157511A1 (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for a limited slip differential |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580018880.8A Division CN106170645B (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for limited-slip differential |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081144A true CN110081144A (en) | 2019-08-02 |
| CN110081144B CN110081144B (en) | 2022-06-14 |
Family
ID=54288398
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580018880.8A Active CN106170645B (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for limited-slip differential |
| CN201910167227.8A Active CN110081144B (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for a limited slip differential |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580018880.8A Active CN106170645B (en) | 2014-04-11 | 2015-04-09 | Hydraulic control unit for limited-slip differential |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102401911B1 (en) |
| CN (2) | CN106170645B (en) |
| WO (1) | WO2015157511A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180110069A (en) | 2016-02-23 | 2018-10-08 | 이턴 인텔리전트 파워 리미티드 | Hydraulic control unit with charging port |
| WO2019046787A1 (en) * | 2017-09-01 | 2019-03-07 | Eaton Intelligent Power Limited | Hydraulic control unit for limited slip differential |
| CN110094486A (en) * | 2018-01-27 | 2019-08-06 | 益阳天华两栖车艇有限公司 | A kind of transfer hydraulic clutch transmission case |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3524615A1 (en) * | 1985-07-10 | 1987-01-15 | Bosch Gmbh Robert | Hydraulic unit for the operation of a differential lock for a motor vehicle |
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- 2015-04-09 KR KR1020167027906A patent/KR102401911B1/en active IP Right Grant
- 2015-04-09 WO PCT/US2015/025096 patent/WO2015157511A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015157511A1 (en) | 2015-10-15 |
| CN106170645A (en) | 2016-11-30 |
| KR20160145569A (en) | 2016-12-20 |
| KR102401911B1 (en) | 2022-05-26 |
| CN106170645B (en) | 2019-04-02 |
| CN110081144B (en) | 2022-06-14 |
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