WO2000000360A1 - Ensemble perfectionne de commande de traction et de suspension - Google Patents

Ensemble perfectionne de commande de traction et de suspension Download PDF

Info

Publication number
WO2000000360A1
WO2000000360A1 PCT/US1999/014826 US9914826W WO0000360A1 WO 2000000360 A1 WO2000000360 A1 WO 2000000360A1 US 9914826 W US9914826 W US 9914826W WO 0000360 A1 WO0000360 A1 WO 0000360A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive axle
assembly
drive
traction control
traction
Prior art date
Application number
PCT/US1999/014826
Other languages
English (en)
Inventor
James Mcclelland
Charles E. Eberling
Dick W. Mccreight
Original Assignee
Alliedsignal Inc.
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 Alliedsignal Inc. filed Critical Alliedsignal Inc.
Priority to CA002336119A priority Critical patent/CA2336119A1/fr
Priority to JP2000556935A priority patent/JP2002519231A/ja
Priority to EP99933621A priority patent/EP1091860A1/fr
Publication of WO2000000360A1 publication Critical patent/WO2000000360A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4818—Traction control, stability control, using both the wheel brakes and other automatic braking systems in pneumatic brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/349—Systems adapted to control a set of axles, e.g. tandem axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B60G2400/61—Load distribution
    • 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
    • B60G2800/21—Traction, slip, skid or slide control
    • B60G2800/214—Traction, slip, skid or slide control by varying the load distribution

Definitions

  • This invention pertains to the art of traction control assemblies and more particularly, to a combined traction and suspension control assembly that provides 6x4 like traction performance on a 6x2 vehicle.
  • the invention is particularly applicable to vehicles such as truck/tractor systems or buses and will be described with particular reference thereto. It will be appreciated, however, that the invention may have broader applications and may be advantageously employed in related environments or applications .
  • Antilock/traction control assemblies are well known for truck and tractor systems.
  • a 6x4 system has a pair of drive axles, each necessarily including a drive mechanism and differential. Vehicle cost is higher in a 6x4 arrangement relative to a 6x2 arrangement because of the additional drive components. The increased costs can be on the order of $1,000.
  • Traction control assemblies use the same general principles as an antilock braking system. That is, on wet surfaces, curves, split surfaces, and ice, traction control senses when the wheels of a vehicle spin upon acceleration, i.e., due to a loss of traction between the road surface and the tire. In order to compensate for this loss of traction, additional drive torque is transferred to the non-spinning tires or wheels. A braking force is gently applied to the spinning wheel which transfers the torque through the differential to the non-spinning, or more slowly spinning, wheel. If both wheels spin, then the engine RPM is electronically controlled and reduced to an appropriate level .
  • only one of the two rear axles is a drive axle.
  • the non-drive axle, or tag axle or pusher axle further distributes the vehicle load over an additional axle. In a traction control event the wheels associated with the non-drive axle may not even rotate.
  • the present invention contemplates a new and improved traction and suspension control assembly for a truck or tractor that overcomes the above-referenced problems and others and provides a simple, economical assembly that provides improved, effective, traction control in a simplified, reduced cost system.
  • a traction and suspension control assembly includes a drive axle and a non-drive axle.
  • a traction control assembly associated with the drive axle selectively transfers torque in response to a differential traction control event.
  • a suspension control assembly selectively transfers vehicle load from the non-drive rear axle to the drive rear axle in response to a differential traction control event.
  • the suspension control assembly is in fluid communication with the traction control assembly for automatically altering the vehicle load distribution in response to a differential traction control event.
  • the suspension control assembly includes a fluid chamber associated with each axle and a valve that regulates fluid flow from one chamber to the other for transferring vehicle load between the axles.
  • braking on the non-drive axle is isolated from the drive axle during a differential traction control event .
  • a principal advantage of the invention is the ability to obtain increased traction in a 6x2 system by modifying conventional traction control and air suspension assemblies, and tying the two together into a single integrated system.
  • Another advantage of the invention is the automated nature of operation in response to a differential traction control event.
  • Still another advantage of the invention is the ability to limit the amount of vehicle load that may be shifted from one axle to the other.
  • Figure 1 is a schematic representation of a truck braking system.
  • Figure 2 is a schematic representation of the new traction control arrangement that ties the air suspension assembly into the circuit of the antilock/traction assembly.
  • Figure 1 shows a tractor having tandem rear wheels 10, 12.
  • the wheels 10 are connected together by a first or drive axle 14 of conventional structure.
  • one of the rear axles associated with the tandem wheels 10, 12 is a non-drive axle, here represented by the second or rear axle 12.
  • the arrangement may be reversed without departing from the scope and intent of the subject invention.
  • the tractor A shown in Figure 1 is equipped with a conventional antilock/traction control assembly B commercially available, for example, from the assignee of the present application.
  • the system includes an antilock modulator assembly 20 that controls braking to front wheels 22 of the tractor.
  • an antilock/traction controller is incorporated into the pneumatic assembly so that air controls braking of the first and second axles also.
  • a series of sensors 26 provide representative signals of wheel spinning conditions to the control unit. If a wheel is spinning, i.e., a differential traction control event is sensed, braking is gently applied to the spinning wheel. This transfers torque to the non-spinning wheel through the differential as is well known in the art.
  • details of conventional antilock/traction control assemblies are well known in the art so further discussion herein is deemed unnecessary to a full and complete understanding of the present invention.
  • a source of compressed air 28 is provided for the pneumatic assembly. It supplies air to an antilock/traction controller 30 which includes an antilock electronic control unit 32.
  • the controller is also 30 equipped with traction solenoid valve 34 and relay valve 36. In this manner, pressurized air from the source 28 is controlled to modulator valves 38, 40 which supply the air brake actuators 42 associated with the rear wheels 10, 12.
  • modulator valves 38, 40 which supply the air brake actuators 42 associated with the rear wheels 10, 12.
  • the sensors 26 are associated with the wheels 10 on the drive axle to monitor the rotation of the wheels.
  • the non-drive axle wheels 12 do not include such sensors.
  • Fluid lines 50, 52 extending from the modulators include first branches 50', 52' that supply the brake actuators associated with the drive axle.
  • second branches 50' ' and 52' ' supply air to operate the brake actuators associated with wheels 12.
  • an air suspension assembly 60 is provided for the drive and non-drive axle assembly.
  • the air suspension assembly 60 includes fluid chambers or air bags 62, preferably discrete air bags, that shift or proportion the vehicle load between the drive and non-drive axles when inflated or deflated.
  • the air bags 62 associated with the drive axle are commonly supplied through line 64 and communicate with a non-drive axle air suspension control valve 66.
  • the air bags 62 associated with the non-drive axle wheels are commonly supplied through a line 68 that extends from the non-drive axle air suspension control valve. In this manner, the air bags associated with the drive axle work in tandem and, similarly, the air bags associated with the non-drive axle work in tandem to shift the vehicle load as desired for enhanced traction.
  • the tag axle air suspension control valve 66 is in fluid communication with the traction solenoid of the antilock/traction controller via line 70. This provides pressurized air from the source 28 as regulated by the antilock/traction controller 32, 34, 36 and supplies pressurized air to the control valve 66. Thus, if a differential traction control event occurs, pressurized air to the suspension control valve 66 is regulated.
  • isolation valves 72 are provided in the branch passages 52 ' ' associated with each brake actuator 42 of the non-drive axle. Thus, when a traction control event is encountered, air pressure provided from the antilock/traction controller through line 70 is directed to valves 72 to isolate the braking to the non-drive axle from the drive axle. In this manner, there is no brake drag on the non-drive axle during a differential traction control event.
  • the system of the present invention uses a single drive axle 14.
  • the single drive axle is used in combination with an air bag suspension assembly 60 on a non-drive axle, traction control 26, 38, 40 of the drive axle, and isolation valve 70 to separate control of the drive and non-drive axles .
  • the non-drive axle helps carry the vehicle load during normal operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un système de commande de traction perfectionné pour véhicule 6x2 modifié. Un ensemble à suspension pneumatique est lié à l'unité de commande antiblocage/traction. De cette façon, en réponse à une situation de commande de traction différentielle, l'air comprimé dans des airbags associés à l'ensemble de la suspension est régulé en vue de transférer une plus grande charge du véhicule sur l'arbre moteur (10). Ceci améliore la capacité de traction. Si l'arbre moteur est déjà à sa charge maximale de régime du véhicule, aucune masse supplémentaire n'est transférée. En outre, des vannes d'isolement (72) sont ajoutées aux lignes de freinage associées à l'arbre traîné (12). Les vannes d'isolement communiquent également directement avec l'unité de commande antiblocage/traction, de sorte que le freinage sur l'arbre traîné est isolé de l'arbre moteur. Ceci élimine la résistance au freinage sur l'arbre traîné, lors d'une situation de commande de traction différentielle.
PCT/US1999/014826 1998-06-30 1999-06-30 Ensemble perfectionne de commande de traction et de suspension WO2000000360A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002336119A CA2336119A1 (fr) 1998-06-30 1999-06-30 Ensemble perfectionne de commande de traction et de suspension
JP2000556935A JP2002519231A (ja) 1998-06-30 1999-06-30 改良されたけん引・サスペンション制御装置
EP99933621A EP1091860A1 (fr) 1998-06-30 1999-06-30 Ensemble perfectionne de commande de traction et de suspension

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10762098A 1998-06-30 1998-06-30
US09/107,620 1998-06-30

Publications (1)

Publication Number Publication Date
WO2000000360A1 true WO2000000360A1 (fr) 2000-01-06

Family

ID=22317527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014826 WO2000000360A1 (fr) 1998-06-30 1999-06-30 Ensemble perfectionne de commande de traction et de suspension

Country Status (4)

Country Link
EP (1) EP1091860A1 (fr)
JP (1) JP2002519231A (fr)
CA (1) CA2336119A1 (fr)
WO (1) WO2000000360A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056561A1 (fr) * 1999-03-22 2000-09-28 Alliedsignal Inc. Vanne de transfert de poids proportionnel destinee a une regulation de suspension avec commande de traction 6x2 automatique
EP1063107A1 (fr) * 1999-06-25 2000-12-27 MAN Nutzfahrzeuge Aktiengesellschaft Aide de traction automatisée pour essieux moteurs comprenant au moins un essieu poussé ou traíné à suspension pneumatique
WO2005108147A1 (fr) * 2004-05-03 2005-11-17 Daimlerchrysler Ag Dispositif et procede pour remedier aux problemes de traction dans des vehicules a essieux multiples
WO2010120235A1 (fr) * 2009-04-17 2010-10-21 Scania Cv Ab Véhicule à moteur avec système de suspension à air et programme informatique pour commander un système de suspension à air
WO2011075014A1 (fr) * 2009-12-18 2011-06-23 Volvo Lastvagnar Ab Système d'assistance anti-dérapage permettant d'améliorer la traction d'un camion
WO2012002878A1 (fr) * 2010-06-28 2012-01-05 Scania Cv Ab Dispositif et procédé de transfert de charge dans bogie
WO2015134231A1 (fr) * 2014-03-04 2015-09-11 Hendrickson Usa, Llc Verrouillage mutuel de frein de stationnement pour essieu à soulèvement automatique
WO2015176732A1 (fr) * 2014-05-22 2015-11-26 Wabco Gmbh Procédé de régulation de la traction d'un véhicule à suspension pneumatique et système de suspension pneumatique pour mettre en œuvre le procédé
WO2016094746A1 (fr) * 2014-12-12 2016-06-16 Dana Heavy Vehicle Systems Group, Llc Système de suspension dynamique à décalage de poids
CN109923014A (zh) * 2016-08-29 2019-06-21 沃尔沃卡车集团 用于提高制动性能的空气悬架排空
US11618295B2 (en) 2020-07-29 2023-04-04 Valid Manufacturing Ltd. Electronic suspension control system for a vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108189636B (zh) * 2018-01-12 2021-01-22 中国重汽集团济南动力有限公司 一种中重型汽车车桥二次提升装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358297A1 (fr) * 1976-07-15 1978-02-10 Aspro Inc Dispositif de commande repondant a la vitesse pour un essieu traine relevable
DE3400566A1 (de) * 1984-01-10 1985-07-18 Robert Bosch Gmbh, 7000 Stuttgart Bremsanlage fuer fahrzeuge
EP0160844A1 (fr) * 1984-05-04 1985-11-13 Robert Bosch Gmbh Dispositif de levage des roues d'un véhicule utilitaire à moteur
FR2590525A1 (fr) * 1985-11-22 1987-05-29 Renault Vehicules Ind Dispositif pour ameliorer l'adherence motrice d'un essieu tandem a un seul pont moteur
EP0274610A2 (fr) * 1987-01-13 1988-07-20 WABCO Westinghouse Fahrzeugbremsen GmbH Véhicule avec système antiblocage et antipatinage
DE4413170A1 (de) * 1994-04-15 1995-03-30 Daimler Benz Ag Bremsanlage mit ABS- und ASR-Funktion für eine angetriebene und eine nichtangetriebene Achse
WO1998030404A1 (fr) * 1997-01-10 1998-07-16 The Boler Company Suspensions d'essieux arriere en tandem pour camions et porteurs-remorqueurs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358297A1 (fr) * 1976-07-15 1978-02-10 Aspro Inc Dispositif de commande repondant a la vitesse pour un essieu traine relevable
DE3400566A1 (de) * 1984-01-10 1985-07-18 Robert Bosch Gmbh, 7000 Stuttgart Bremsanlage fuer fahrzeuge
EP0160844A1 (fr) * 1984-05-04 1985-11-13 Robert Bosch Gmbh Dispositif de levage des roues d'un véhicule utilitaire à moteur
FR2590525A1 (fr) * 1985-11-22 1987-05-29 Renault Vehicules Ind Dispositif pour ameliorer l'adherence motrice d'un essieu tandem a un seul pont moteur
EP0274610A2 (fr) * 1987-01-13 1988-07-20 WABCO Westinghouse Fahrzeugbremsen GmbH Véhicule avec système antiblocage et antipatinage
DE4413170A1 (de) * 1994-04-15 1995-03-30 Daimler Benz Ag Bremsanlage mit ABS- und ASR-Funktion für eine angetriebene und eine nichtangetriebene Achse
WO1998030404A1 (fr) * 1997-01-10 1998-07-16 The Boler Company Suspensions d'essieux arriere en tandem pour camions et porteurs-remorqueurs

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056561A1 (fr) * 1999-03-22 2000-09-28 Alliedsignal Inc. Vanne de transfert de poids proportionnel destinee a une regulation de suspension avec commande de traction 6x2 automatique
EP1063107A1 (fr) * 1999-06-25 2000-12-27 MAN Nutzfahrzeuge Aktiengesellschaft Aide de traction automatisée pour essieux moteurs comprenant au moins un essieu poussé ou traíné à suspension pneumatique
WO2005108147A1 (fr) * 2004-05-03 2005-11-17 Daimlerchrysler Ag Dispositif et procede pour remedier aux problemes de traction dans des vehicules a essieux multiples
WO2010120235A1 (fr) * 2009-04-17 2010-10-21 Scania Cv Ab Véhicule à moteur avec système de suspension à air et programme informatique pour commander un système de suspension à air
DE112010001652T5 (de) 2009-04-17 2012-06-14 Scania Cv Ab Kraftfahrzeug mit einem Luftfederungssystem und Computerprogramm zur Steuerung eines Luftfederungssystems
DE112010001652B4 (de) 2009-04-17 2023-01-12 Scania Cv Ab Kraftfahrzeug mit einem Luftfederungssystem und Computerprogramm zur Steuerung eines Luftfederungssystems
WO2011075014A1 (fr) * 2009-12-18 2011-06-23 Volvo Lastvagnar Ab Système d'assistance anti-dérapage permettant d'améliorer la traction d'un camion
WO2012002878A1 (fr) * 2010-06-28 2012-01-05 Scania Cv Ab Dispositif et procédé de transfert de charge dans bogie
AU2015225635B2 (en) * 2014-03-04 2016-09-08 Hendrickson Usa, Llc Parking brake interlock for automatic lift axle
CN106103147A (zh) * 2014-03-04 2016-11-09 亨德里克森美国有限责任公司 用于自动升降轴的驻车制动互锁装置
US9533540B2 (en) 2014-03-04 2017-01-03 Hendrickson Usa, L.L.C. Parking brake interlock for automatic lift axle
WO2015134231A1 (fr) * 2014-03-04 2015-09-11 Hendrickson Usa, Llc Verrouillage mutuel de frein de stationnement pour essieu à soulèvement automatique
US11072217B2 (en) 2014-05-22 2021-07-27 Wabco Gmbh Method for controlling the traction of a pneumatically sprung vehicle and air suspension system for carrying out the method
WO2015176732A1 (fr) * 2014-05-22 2015-11-26 Wabco Gmbh Procédé de régulation de la traction d'un véhicule à suspension pneumatique et système de suspension pneumatique pour mettre en œuvre le procédé
CN107000530A (zh) * 2014-12-12 2017-08-01 德纳重型车辆系统集团有限责任公司 动态重量转移悬架系统
EP3230096B1 (fr) 2014-12-12 2018-11-28 Dana Heavy Vehicle Systems Group, LLC Système de suspension dynamique à décalage de poids
WO2016094746A1 (fr) * 2014-12-12 2016-06-16 Dana Heavy Vehicle Systems Group, Llc Système de suspension dynamique à décalage de poids
US10358011B2 (en) 2014-12-12 2019-07-23 Dana Heavy Vehicle Systems Group, Llc Dynamic weight shift suspension system
CN109923014A (zh) * 2016-08-29 2019-06-21 沃尔沃卡车集团 用于提高制动性能的空气悬架排空
CN109923014B (zh) * 2016-08-29 2021-07-13 沃尔沃卡车集团 用于车辆的负载传递装置、负载传递方法和车辆
US10940733B2 (en) 2016-08-29 2021-03-09 Volvo Truck Corporation Air suspension evacuation for improved braking performance
US11618295B2 (en) 2020-07-29 2023-04-04 Valid Manufacturing Ltd. Electronic suspension control system for a vehicle

Also Published As

Publication number Publication date
EP1091860A1 (fr) 2001-04-18
JP2002519231A (ja) 2002-07-02
CA2336119A1 (fr) 2000-01-06

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