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WO2008140427A1 - Midibus full air bellowed front suspension system with lateral rod and radiu rods - Google Patents

Midibus full air bellowed front suspension system with lateral rod and radiu rods Download PDF

Info

Publication number
WO2008140427A1
WO2008140427A1 PCT/TR2007/000056 TR2007000056W WO2008140427A1 WO 2008140427 A1 WO2008140427 A1 WO 2008140427A1 TR 2007000056 W TR2007000056 W TR 2007000056W WO 2008140427 A1 WO2008140427 A1 WO 2008140427A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension system
lateral rod
rods
front suspension
rod
Prior art date
Application number
PCT/TR2007/000056
Other languages
French (fr)
Inventor
Ismail Sahin
Fatih H. Avci
Omer Ozbek
Original Assignee
Temsa Sanayi Ve Ticaret A.S.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Temsa Sanayi Ve Ticaret A.S. filed Critical Temsa Sanayi Ve Ticaret A.S.
Publication of WO2008140427A1 publication Critical patent/WO2008140427A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
    • B60G11/64—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having both torsion-bar springs and fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/314—Rigid axle suspensions with longitudinally arranged arms articulated on the axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/34—Stabilising mechanisms, e.g. for lateral stability
    • B60G2200/341—Panhard rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/34—Stabilising mechanisms, e.g. for lateral stability
    • B60G2200/346—Stabilising mechanisms, e.g. for lateral stability with an axle suspended by two laterally displaced rods having an imaginary point of intersection above the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/44—Indexing codes relating to the wheels in the suspensions steerable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/135—Stabiliser bar and/or tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/14—Buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/20—Stationary vehicle
    • B60G2800/202—Stationary vehicle kneeling, e.g. for letting passengers on/off

Definitions

  • This invention relates to usage of air bellows and rods instead of springs in the suspension system, especially in the front engine midi busses, in order to eliminate the negative effects of springs, which are parts of front suspension system, to the comfort of the vehicle; provide the suspension system be more durable and increase the stability of the vehicle under different road circumstances.
  • Suspension system which is placed between the body of the vehicle and the tyres, is the mechanism that absorbs the vibrations arising from the potholes and mounds on roads. In other words suspension system is needed for driving comfort and stability.
  • the spring namely the basic element of suspension system
  • the leaf springs are one of the elements which connect the chassis, carrying the load of the vehicle, to the tyres.
  • the leaf springs especially in the suspension system of the front engine midi busses, are used in addition to air bellows.
  • springs have negative features to vehicle comfort and endurance of suspension system. Namely; in the laminated leaf spring system, absorption of vibrations caused by the road is realized by sliding of leaves on each other with friction. Although some friction attenuator materials are used to minimize the friction between the leaves,- inner vibrations of the leaves can not be eliminated totally and vibrations arising from little strokes coming from the road can not be absorbed by the springs and directly conducted to the chassis . This is a very important factor that affects the vehicle comfort .
  • air bellows (2, 3), lateral rod (4) and radius rods (5, 6, 7, 8) are used in order to eliminate the forces being conducted to the chassis; which comes from the road because of the inner vibrations between the leaves of the springs and which can not be absorbed; namely, to make especially the front engine midi busses more comfortable.
  • the air bellows used in the suspension systems consists of rubber bellows filled with air in a preserving case; these bellows are pumped with pressurized air coming from the vehicle's compressor. Spring effect which provides absorption of the vibrations coming from the road is obtained by pumping air to the air bellows and absorbing it out.
  • vehicle comfort is increased by usage of right (2) and left
  • the suspension system which is the subject of this invention comprises lateral rod (4) .
  • the lateral rod (4) that can not be entrained to the front suspension system because of the springs in the known applications; is placed in a suitable position in the area between the engine and the engine fan which emerges by the usage of air bellows instead of springs in the system which is the subject of this invention; so that it realizes its functions much better.
  • the main function of the lateral rod (4) is to provide the stability of the system by keeping the vehicle body connected to the axle (1) in case of vehicle's springing and tilting right or left sides.
  • lateral rod (4) contrarily to air bellows (1, 2), provides vehicle's stability by meeting the forces coming from the road parallel to the axle (1) pivot.
  • right upper radius rod (5) right bottom radius rod (6)
  • left upper radius rod (7) left bottom radius rod
  • Figure 1 Isometric appearance of the air bellow suspension system with lateral rod and radius rods .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

This invention relates to usage of right and left air bellows (2, 3), lateral rod (4), right upper and bottom radius rods (5, 6) and left bottom and upper radius rods (7, 8), especially in the front engine midi busses, instead of springs in the front suspension system accordingly; so that the stability, comfort and balance of the vehicle is provided by meeting any force to the axle (1) pivot that might come from each direction.

Description

DESCRIPTION
MIDIBUS FULL AIR BELLOWED FRONT SUSPENSION SYSTEM WITH LATERAL ROD AND RADIUS RODS
Field of invention
This invention relates to usage of air bellows and rods instead of springs in the suspension system, especially in the front engine midi busses, in order to eliminate the negative effects of springs, which are parts of front suspension system, to the comfort of the vehicle; provide the suspension system be more durable and increase the stability of the vehicle under different road circumstances.
Background of the invention
Suspension system, which is placed between the body of the vehicle and the tyres, is the mechanism that absorbs the vibrations arising from the potholes and mounds on roads. In other words suspension system is needed for driving comfort and stability.
Generally, the spring, namely the basic element of suspension system, is one of the elements which connect the chassis, carrying the load of the vehicle, to the tyres. In the state of art, the leaf springs, especially in the suspension system of the front engine midi busses, are used in addition to air bellows. However, springs have negative features to vehicle comfort and endurance of suspension system. Namely; in the laminated leaf spring system, absorption of vibrations caused by the road is realized by sliding of leaves on each other with friction. Although some friction attenuator materials are used to minimize the friction between the leaves,- inner vibrations of the leaves can not be eliminated totally and vibrations arising from little strokes coming from the road can not be absorbed by the springs and directly conducted to the chassis . This is a very important factor that affects the vehicle comfort .
Also, because of the fracture and curvature of the leaves arising from this friction, springs need regular and frequent attendance .
Detailed description of the invention
In the suspension system which is the subject of this invention; air bellows (2, 3), lateral rod (4) and radius rods (5, 6, 7, 8) are used in order to eliminate the forces being conducted to the chassis; which comes from the road because of the inner vibrations between the leaves of the springs and which can not be absorbed; namely, to make especially the front engine midi busses more comfortable.
The air bellows used in the suspension systems consists of rubber bellows filled with air in a preserving case; these bellows are pumped with pressurized air coming from the vehicle's compressor. Spring effect which provides absorption of the vibrations coming from the road is obtained by pumping air to the air bellows and absorbing it out. In the suspension system which is the subject of this invention vehicle comfort is increased by usage of right (2) and left
(3) air bellows in front of the tyres, on the axle, which do not create any inner vibration during the springback and absorb the vibration more easily and effectively in comparison to mechanical systems such as springs. Also, since the air bellows (2, 3) are the systems which operate vertically to the axle (1) pivot; namely, they are able to meet the vertical forces to the axle (1) pivot coming from the road; these vertical forces are prevented to reach the chassis with the mentioned suspension system.
In the suspension system which is the subject of this invention together with the usage of air bellows instead of springs, the required short term periodical attendance because of the fracture and curvature of the leaves is eliminated; endurance of the suspension system is increased, as well .
Other important advantage of using right (2) and left (3) air bellows in the suspension system is that; vehicle driving level is always kept stable under all circumstances since the level control valves (9) pump and absorb the air to and from the air bellows (2, 3) in accordance with the weight.
Another important feature of the suspension system which is the subject of this invention is that it comprises lateral rod (4) . The lateral rod (4) that can not be entrained to the front suspension system because of the springs in the known applications; is placed in a suitable position in the area between the engine and the engine fan which emerges by the usage of air bellows instead of springs in the system which is the subject of this invention; so that it realizes its functions much better. In the system which is the subject of this invention the main function of the lateral rod (4) is to provide the stability of the system by keeping the vehicle body connected to the axle (1) in case of vehicle's springing and tilting right or left sides. Namely; lateral rod (4) , contrarily to air bellows (1, 2), provides vehicle's stability by meeting the forces coming from the road parallel to the axle (1) pivot. Moreover, the right upper radius rod (5) , right bottom radius rod (6) , left upper radius rod (7) and left bottom radius rod
(8) keep the vehicle stable under every circumstance by meeting any force coming from any direction and holding the axle (1) with the help of their astatic structure which is moveable to different lines.
Consequently, in the front suspension system which is the subject of this invention, stability and comfort of the vehicle is increased by not using springs but air bellows (2, 3), lateral rod (4) and radius rods; also by meeting forces coming from any direction except for the vertical direction which is parallel to axle (1) pivot.
Brief description of the drawings
Figure 1: Isometric appearance of the air bellow suspension system with lateral rod and radius rods .
Brief description of the references
1 Axle shaft
2 Right air bellow 3 Left air bellow 4 Lateral rod 5 Right upper radius rod 6 Right bottom radius rod 7 Left upper radius rod 8 Left bottom radius rod 9 Level control valve

Claims

1. A suspension system designed especially for the front engine midi busses,- comprising air bellows (2, 3) instead of springs as an auxiliary suspension system.
2.A front suspension system according to claim 1; comprising right (2) and left (3) air bellows, lateral rod (4) , right upper radius rod (5) , right bottom radius rod (6) left upper radius rod (7) , left bottom radius rod (8) and level control valve (9) .
3.A front suspension system according to claim 2; wherein lateral rod (4) is placed between the engine and the engine fan.
800
Figure imgf000006_0001
615
PCT/TR2007/000056 2007-05-16 2007-06-29 Midibus full air bellowed front suspension system with lateral rod and radiu rods WO2008140427A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2007/03349 2007-05-16
TR2007/03349A TR200703349A2 (en) 2007-05-16 2007-05-16 Front suspension system with full air bellows, lateral rod and radius rods

Publications (1)

Publication Number Publication Date
WO2008140427A1 true WO2008140427A1 (en) 2008-11-20

Family

ID=38890229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2007/000056 WO2008140427A1 (en) 2007-05-16 2007-06-29 Midibus full air bellowed front suspension system with lateral rod and radiu rods

Country Status (3)

Country Link
IT (1) ITMI20080890A1 (en)
TR (1) TR200703349A2 (en)
WO (1) WO2008140427A1 (en)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136305A1 (en) * 1981-09-12 1983-03-24 Hermann Dr.-Ing. 7412 Eningen Klaue Drive axle for heavy motor vehicles
US4469369A (en) * 1980-03-07 1984-09-04 Vsesojuzny Konstruktorsko-Experimentalny Institut Avtobusostroenya Module element of city bus or like vehicle and bus assembled on the basis of such module elements
JPS63263120A (en) * 1987-04-20 1988-10-31 Tokico Ltd Air suspension device
US5193849A (en) * 1990-04-27 1993-03-16 Man Nutzfahrzeuge Aktiengesellschaft Kneeling omnibus
WO1995009092A1 (en) * 1993-09-27 1995-04-06 Ikarus Jármügyártó Rt Suspension for motor vehicles, mainly for low-floor buses
EP0728601A1 (en) * 1995-02-25 1996-08-28 MAN Nutzfahrzeuge Aktiengesellschaft Non-driving front-, leading- or trailing-axle of a utility vehicle, especially of a truck or bus
DE19624242A1 (en) * 1996-06-18 1997-09-18 Daimler Benz Ag Vehicle front wheel suspension with rigid axle
DE29709697U1 (en) * 1997-06-04 1997-09-25 Ernst Auwärter Karosserie- und Fahrzeugbau KG, 71144 Steinenbronn Low-floor bus
WO1997044209A1 (en) * 1996-05-17 1997-11-27 Robert Wright & Son Coachworks Ltd. Low floor bus
DE19722961C1 (en) * 1997-05-31 1998-08-13 Daimler Benz Ag Passenger vehicle, e.g. bus
JPH1159154A (en) * 1997-08-20 1999-03-02 Nhk Spring Co Ltd Air suspension device
WO2001010663A1 (en) * 1999-08-06 2001-02-15 Egs Incorporated Rear suspension and drive axle assembly for a low floor vehicle
EP1213162A1 (en) * 2000-12-09 2002-06-12 ZF FRIEDRICHSHAFEN Aktiengesellschaft Independent wheel suspension for sprung, steerable wheel
JP2002308143A (en) * 2001-04-12 2002-10-23 Isuzu Motors Ltd Vehicle body base structure
WO2003106247A1 (en) * 2002-06-18 2003-12-24 Arboc Ltd. Low load floor motor vehicle
US20040150142A1 (en) * 2003-02-05 2004-08-05 Warinner Derek K. Steering beam axle air spring suspension
DE102004038487A1 (en) * 2004-08-07 2006-03-16 Man Nutzfahrzeuge Ag Chassis for e.g. truck, has front module fastenable at front ends of frame longitudinal carriers, where front module is pre-assembled with drive engine and transmission and/or another periphery component

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469369A (en) * 1980-03-07 1984-09-04 Vsesojuzny Konstruktorsko-Experimentalny Institut Avtobusostroenya Module element of city bus or like vehicle and bus assembled on the basis of such module elements
DE3136305A1 (en) * 1981-09-12 1983-03-24 Hermann Dr.-Ing. 7412 Eningen Klaue Drive axle for heavy motor vehicles
JPS63263120A (en) * 1987-04-20 1988-10-31 Tokico Ltd Air suspension device
US5193849A (en) * 1990-04-27 1993-03-16 Man Nutzfahrzeuge Aktiengesellschaft Kneeling omnibus
WO1995009092A1 (en) * 1993-09-27 1995-04-06 Ikarus Jármügyártó Rt Suspension for motor vehicles, mainly for low-floor buses
EP0728601A1 (en) * 1995-02-25 1996-08-28 MAN Nutzfahrzeuge Aktiengesellschaft Non-driving front-, leading- or trailing-axle of a utility vehicle, especially of a truck or bus
WO1997044209A1 (en) * 1996-05-17 1997-11-27 Robert Wright & Son Coachworks Ltd. Low floor bus
DE19624242A1 (en) * 1996-06-18 1997-09-18 Daimler Benz Ag Vehicle front wheel suspension with rigid axle
DE19722961C1 (en) * 1997-05-31 1998-08-13 Daimler Benz Ag Passenger vehicle, e.g. bus
DE29709697U1 (en) * 1997-06-04 1997-09-25 Ernst Auwärter Karosserie- und Fahrzeugbau KG, 71144 Steinenbronn Low-floor bus
JPH1159154A (en) * 1997-08-20 1999-03-02 Nhk Spring Co Ltd Air suspension device
WO2001010663A1 (en) * 1999-08-06 2001-02-15 Egs Incorporated Rear suspension and drive axle assembly for a low floor vehicle
EP1213162A1 (en) * 2000-12-09 2002-06-12 ZF FRIEDRICHSHAFEN Aktiengesellschaft Independent wheel suspension for sprung, steerable wheel
JP2002308143A (en) * 2001-04-12 2002-10-23 Isuzu Motors Ltd Vehicle body base structure
WO2003106247A1 (en) * 2002-06-18 2003-12-24 Arboc Ltd. Low load floor motor vehicle
US20040150142A1 (en) * 2003-02-05 2004-08-05 Warinner Derek K. Steering beam axle air spring suspension
DE102004038487A1 (en) * 2004-08-07 2006-03-16 Man Nutzfahrzeuge Ag Chassis for e.g. truck, has front module fastenable at front ends of frame longitudinal carriers, where front module is pre-assembled with drive engine and transmission and/or another periphery component

Also Published As

Publication number Publication date
ITMI20080890A1 (en) 2008-11-17
TR200703349A2 (en) 2008-12-22

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