GB2405381A - Five-link vehicle suspension system - Google Patents
Five-link vehicle suspension system Download PDFInfo
- Publication number
- GB2405381A GB2405381A GB0320413A GB0320413A GB2405381A GB 2405381 A GB2405381 A GB 2405381A GB 0320413 A GB0320413 A GB 0320413A GB 0320413 A GB0320413 A GB 0320413A GB 2405381 A GB2405381 A GB 2405381A
- Authority
- GB
- United Kingdom
- Prior art keywords
- links
- wheel
- link
- wheel carrier
- longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
- B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/18—Multilink suspensions, e.g. elastokinematic arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/18—Multilink suspensions, e.g. elastokinematic arrangements
- B60G2200/184—Assymetric arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/124—Mounting of coil springs
- B60G2204/1244—Mounting of coil springs on a suspension arm
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A multi-link suspension arrangement suitable for a rear wheel of a vehicle comprises three transverse links 1 to 3 and two longitudinal links 4, 5. Both longitudinal links 4, 5 extend forwardly of the wheel carrier thereby reducing undesirable hub rotation whilst minimising packaging space and maximising rear seat and boot space.
Description
Five - Link Vehicle suspension System The present invention relates to
multi-link suspension systems for wheeled vehicles.
A wheel suspension's function is, primarily, to isolate the vehicle body and its occupants from the road. However, a suspension system must also control the wheels relative to the vehicle body during braking, cornering and acceleration. These two requirements conflict to a certain extent and usually a compromise has to be made between comfort and road-holding.
EP-A-1123821 discloses a five-link suspension system for a rear wheel of the type comprising three transverse links and two longitudinal links for connecting a wheel carrier to the vehicle body. One longitudinal link extends forwards from the wheel carrier and the other longitudinal link extends rewards fron1 the wheel carrier. This known system is characterized in that the vertical separation between the lower, forwardly extending longitudinal link's attachment point to the wheel carrier and the wheel centre is greater than the vertical separation between the upper, rearwardly extending longitudinal link's attachment point to the wheel carrier and the wheel centre.
Whlist this known system might provide reasonable ride and handling characteristics in certain circumstances, it has the disadvantage of taking up a lot of space.
In accordance with a first aspect, the present invention provides a suspension system for a wheeled vehicle, said system comprising five links for connecting a wheel carrier to the vehicle, wherein three of said five links are transverse links, and a fourth and fifth link of said five links are longitudinal links both extending forwardly of the wheel carrier.
In accordance with a second aspect, the present invention provides a vehicle incorporating the suspension system in accordance with the first aspect. - 2
In a preferred embodiment, one of the longitudinal links is attached to the wheel carrier above wheel contra and the other longitudinal link is attached to the wheel carrier below wheel centre. These two links predominately control the fore and aft position of the wheel (or knuckle assembly).
Preferably, the upper longitudinal link (i.e. the one attached above wheel centre) is arranged to have equal rates in both tension and compression thereby predominately providing the compliance of the suspension system.
The use of two forwardly extending longitudinal links (i.e. trailing arms) advantageously gives reduced levels of wheel carrier (or hub) rotation compared with the known system mentioned above since the present invention provides an arrangement which forms a parallelogram type of linkage rather than a watts type linkage.
The reduced hub rotation is a benefit for a number of the kinematic and elastokinematic characteristics including toe change with suspension vertical travel.
The invention gives the added benefit of reducing the overall spacing of the suspension fore and aft compared with the known system mentioned above, thereby providing good packaging efficiency. This helps to maximise rear seat occupancy and boot package space and shape as well as minimising the impact of the suspension layout on the body structure. Manufacturing costs can also be less.
The good kinematic and elastokinematic behaviour of the invention ensures the favourable characteristics of good linearity of response to external inputs.
In a preferred embodiment, the separation between the lower longitudinal link's attachment point to the wheel carrier and the wheel centre is greater than the vertical separation between the upper longitudinal link's attachment point to the wheel carrier and the wheel centre. - 3
Whilst links are referred to herein as either "transverse" or "longitudinal", it is to be understood that a "transverse" link may have a comparatively small longitudinal component and a "longitudinal" link may have a comparatively small transverse component.
An embodiment of the invention will now be described, by way of example only, with reference to the drawings of which; Figs 1-4 show four different perspective views of five suspension links forming a rear suspension for a wheeled vehicle in accordance with the embodiment.
Axes X, Y and Z shown indicate the angle of view.
Referring to the figures, the rear suspension links comprise three transverse links, a toe link 1, a camber link 2, and a control link 3, and two longitudinal links, an upper link 4 and lower link 5. Each of the five links 1-5 is mounted on a wheel carrier (not shown) at one of its ends at a first mounting point 6 and to the vehicle body or sub-frame (not shown) at its other end at a second mounting point 7. The links 1-5 are mounted elastically thereby allowing some movement of the links 1-5 as the wheel carrier deflects during vehicle l 5 motion.
As is customary, the wheel carrier is also mounted to the vehicle body by means of some spring-loaded device (not shown) to allow vertical movement of the wheel carrier with respect to the vehicle body.
The mountings securing the upper longitudinal link 4 to the vehicle body and to the wheel carrier are arranged to have equal rates in tension and compression.
The upper and lower longitudinal links 4, 5 are arranged so that the separation between the lower longitudinal link's 4 attachment point to the wheel carrier and the wheel centre is greater than the vertical separation between the upper longitudinal link's 5 attachment point too the wheel carrier and the wheel centre. - 5
Claims (6)
1. A suspension system for a wheeled vehicle, said system comprising five links for connecting a wheel carrier to the vehicle wherein three of said five links are transverse links, and a fourth and a fifth link of said five links are longitudinal links both extending forwardly of the wheel carrier.
2. A suspension system as claimed in claim 1 in which one of the longitudinal links is attached to the wheel carrier above wheel centre and the other longitudinal link is attached to the wheel carrier below wheel centre.
3. A suspension system as claimed in claim 2 in which the longitudinal link which is attached to the wheel carrier above wheel centre is arranged to have equal rates in both tension and compression.
4. A suspension system as claimed in either of claims 2 or 3 in which the vertical separation of the wheel centre and the attachment point at the wheel carrier of the longitudinal link attached below wheel centre is greater than the vertical separation of the wheel centre and the attachment point at the wheel carrier of the longitudinal link attached above wheel centre.
5. A wheeled vehicle incorporating a suspension system as claimed in any preceding claim.
6. A multi-link suspension system for a wheeled vehicle substantially as hereinbefore described with reference to the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0320413A GB2405381A (en) | 2003-09-01 | 2003-09-01 | Five-link vehicle suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0320413A GB2405381A (en) | 2003-09-01 | 2003-09-01 | Five-link vehicle suspension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0320413D0 GB0320413D0 (en) | 2003-10-01 |
| GB2405381A true GB2405381A (en) | 2005-03-02 |
Family
ID=28686681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0320413A Withdrawn GB2405381A (en) | 2003-09-01 | 2003-09-01 | Five-link vehicle suspension system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2405381A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010126014A (en) * | 2008-11-28 | 2010-06-10 | Nissan Motor Co Ltd | Front suspension device |
| US7891684B1 (en) | 2009-11-11 | 2011-02-22 | GM Global Technology Operations LLC | Decoupled 5-link independent rear suspension |
| EP2765063A1 (en) * | 2013-02-08 | 2014-08-13 | Audi Ag | Wheel suspension for a wheel of an axle of a motor vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2091175A (en) * | 1980-12-23 | 1982-07-28 | Daimler Benz Ag | Independent wheel suspension |
| EP0806310A2 (en) * | 1996-05-11 | 1997-11-12 | MAN Nutzfahrzeuge Aktiengesellschaft | Independent suspension for a steered air suspended wheel of a bus or lorry |
| US5697633A (en) * | 1993-11-01 | 1997-12-16 | Hyundai Motor Company | Suspension system of front wheels for a vehicle |
| EP1123821A2 (en) * | 2000-02-08 | 2001-08-16 | Bayerische Motoren Werke Aktiengesellschaft | Suspension of a vehicle rear wheel with five links |
| WO2003008212A1 (en) * | 2001-07-10 | 2003-01-30 | Bayerische Motoren Werke Aktiengesellschaft | Rear axle of a passenger vehicle with five individual links |
-
2003
- 2003-09-01 GB GB0320413A patent/GB2405381A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2091175A (en) * | 1980-12-23 | 1982-07-28 | Daimler Benz Ag | Independent wheel suspension |
| US5697633A (en) * | 1993-11-01 | 1997-12-16 | Hyundai Motor Company | Suspension system of front wheels for a vehicle |
| EP0806310A2 (en) * | 1996-05-11 | 1997-11-12 | MAN Nutzfahrzeuge Aktiengesellschaft | Independent suspension for a steered air suspended wheel of a bus or lorry |
| EP1123821A2 (en) * | 2000-02-08 | 2001-08-16 | Bayerische Motoren Werke Aktiengesellschaft | Suspension of a vehicle rear wheel with five links |
| WO2003008212A1 (en) * | 2001-07-10 | 2003-01-30 | Bayerische Motoren Werke Aktiengesellschaft | Rear axle of a passenger vehicle with five individual links |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010126014A (en) * | 2008-11-28 | 2010-06-10 | Nissan Motor Co Ltd | Front suspension device |
| US7891684B1 (en) | 2009-11-11 | 2011-02-22 | GM Global Technology Operations LLC | Decoupled 5-link independent rear suspension |
| EP2765063A1 (en) * | 2013-02-08 | 2014-08-13 | Audi Ag | Wheel suspension for a wheel of an axle of a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0320413D0 (en) | 2003-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |