WO2016074054A1 - Système d'assistance de démarrage sur rampe pour véhicules automobiles - Google Patents

Système d'assistance de démarrage sur rampe pour véhicules automobiles Download PDF

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Publication number
WO2016074054A1
WO2016074054A1 PCT/BR2015/050208 BR2015050208W WO2016074054A1 WO 2016074054 A1 WO2016074054 A1 WO 2016074054A1 BR 2015050208 W BR2015050208 W BR 2015050208W WO 2016074054 A1 WO2016074054 A1 WO 2016074054A1
Authority
WO
WIPO (PCT)
Prior art keywords
brakes
ramp
vehicle
central
brake
Prior art date
Application number
PCT/BR2015/050208
Other languages
English (en)
Inventor
Carlos Abílio PASSOS TRAVAGLIA
Antônio Carlos DE OLIVEIRA
Luís Fernando NUSS DE SOUZA
Paula Mychelle BARROS MARINHO FERREIRA
Carlos Eduardo DE OLIVEIRA NOGUEIRA
Original Assignee
Man Latin America Indústria E Comércio De Veículos Ltda.
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 Man Latin America Indústria E Comércio De Veículos Ltda. filed Critical Man Latin America Indústria E Comércio De Veículos Ltda.
Publication of WO2016074054A1 publication Critical patent/WO2016074054A1/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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake 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
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/06—Hill holder; Start aid systems on inclined road

Definitions

  • the present invention relates to an on-ramp-start assistance system for automotive vehicles, more specifically to a system for tows and/or large-size vehicles that promote actuation of brakes independently of direct command by the driver by means of electropneumatic logics.
  • the device of said patent comprises deformation sensors installed at the brakes to be controlled, which sends data to the control unit and then modifies the actuation of the brake system, so as to release the vehicle when the torque required for the start has been reached.
  • this device achieves its objective, it makes use of a large number of solenoid valves and sensors to control each of the brakes, which becomes especially expensive and complex to operate when the objective is to adapt vehicles with a large number of axles, such as trucks and buses.
  • Patent BR 9705535 describes a start assistance system for use in parking lots which employs a traction control system (ABS + ATC/ASR) to modify the braking force on the drive shaft of the vehicle.
  • ABS + ATC/ASR traction control system
  • the braking control on only one of the shafts may prove to be insufficient to prevent movement of the vehicle in the direction opposite the desired displacement, since the braking torque from only one shaft is relatively small as compared to the strains generated by the weight of large-size vehicles.
  • the present invention aims at an on-ramp start assistance system that can control ail the brakes of an automotive vehicle assemble and further vehicles coupled to it, which can be applied in a practical and cost- saving manner and without addition of a large number of components that are not included in the original construction of the vehicle, by using only the wheel anti-blocking system and the traction-control system (ATC/ASR) coupled to appropriate pneumatic logics.
  • ATC/ASR traction-control system
  • the present invention has the objective of providing an on-ramp start assistance system for haul trucks and rigid vehicles, embracing an engine having at least one drive shaft, a front axle either without any shaft coupled to it or with one or more coupled axles, each having at each of its ends a wheel associated to a brake.
  • the system is also composed by a traction-control system ATC/ASR derived from the ABS system, which comprises a traction-control valve, an ABS pressure-control valve associated to each brake of the drive shaft and an electronic control central, said central being connected to a service-brake sensor, to a rotation-velocity sensor attached to each wheel, to said traction-control valve and to said ABS pressure-control valves.
  • the electronic control central is further associated electronically to a control panel provided with a switch operable by the driver, which enables the function of aiding the start on a ramp.
  • the system of the present invention is further provided with a brake valve operable by the driver by means of a brake pedal such that, upon actuation, enables passage of compressed air, the brake valve being pneumatically connected to the brakes of ail the vehicle shafts.
  • the on-ramp start assistance system functions upon actuation of the brake pedal. If the brakes are acting on command of the driver, when the actuation of the brake pedal ceases, the electronic central receives a signal from the service brake sensor indicating that it is inoperative and, if the function on ⁇ ramp aid function is actuated by means of the switch of the control panel the electronic centra!
  • the electronic central actuates the traction control valve so as to continue feeding air to the brakes for a predetermined time, the electronic central also actuating the ABS pressure control valves of the drive shaft, enabling one to keep the pressure intensity applied directly to the brakes of the drive shaft and indirectly to the brakes of the front and towed axles, the electronic central stopping actuation of the traction control valve after the predetermined time, or if the vehicle develops torque sufficient for on ⁇ ramp start.
  • the system further has a dual pilot control valve associated to the brakes of the front axle and a lower-pressure control valve associated to the brakes of the drive shaft to prevent the on-ramp start assistance system from interfering with the traction-control system ATC/ASR of the vehicle, while controlling directly the brakes of the front axle and of the towed axle.
  • the predetermined time of feeding and keeping the pressure on the brakes is defined and controlled through the electronic control central.
  • Figure 1 is a representation of the pneumatic circuit of the vehicle in which the system of the present invention is applied;
  • FIG. 2 is a representation of the pneumatic circuit of the towed axle, in which the system of the present invention is applied.
  • FIG. 3 is a representation of the electronic circuit integrated to the electronic control central.
  • the prior art corresponding to systems for aiding in stationary start on a ramp has a number of solutions that exhibit great complexity in their electronic circuit, requiring extra control components such as relays, or else an ABS control unit with a larger number of control channels in order to control ail the vehicle wheels, including the towed one. Further, the prior art presents control systems that enable control of traction only on the drive shaft, that is, only on two wheels, which impairs the performance of the system on marked unleveied ground.
  • the present invention provides the control of all the wheels of the vehicle, including the wheels of any tow vehicle by interaction between the traction control system (ATC/ASR) and specific pneumatic logics for this function.
  • ATC/ASR traction control system
  • specific pneumatic logics for this function.
  • Figure 1 shows the pneumatic circuit of the system proposed by the present invention applied to a vehicle 200
  • Figure 2 shows a represents the application of the present invention in case the vehicle 200 has a one-axle tow.
  • the invention is applicable to automotive vehicles that have an ABS, in addition to a traction control system ATC/ASR and make use of a pneumatic braking system, such as trucks, buses, tows, among others, such a vehicle either having a tow or not.
  • the junction of the air lines is shown by a circle involving the lines that are joined, and the air-flowing direction is represented by an arrow at one of the ends of the line.
  • the vehicle 200 as shown in figure 1 , has a drive shaft 10 and a front axle 20, while figure 2 shows the tow associated to the vehicle having a coupled axle 30.
  • Each axle 10, 20, 30 has at each of its two ends a wheel 1 1 , 12, 21 , 22, 31 , 32 associated to a pneumatic actuation brake 13, 14, 23, 24, 33, 34.
  • the vehicle 200 is further provided with a braking system having a brake valve 40 operated by the driver by means of a brake pedal (not shown).
  • Said brake valve 40 has two inlets 41 , 42 and two outlets 43, 44, and when actuated it enables passage of compressed air through the two outlets.
  • the braking system further has a control valve 130 that has two inlets 131 , 132 and two outlets 133, 134, the passage of air being only released to the outlets 133, 134 when both inlets 131 , 132 are fed.
  • the braking system of the present invention further includes a lower-pressure control valve 1 10 and a dual-pilot control valve 70.
  • the dual- pilot control valve 70 has three inlets 71 , 72, 73 and two outlets 74, 75, wherein passage of air is allowed when two or more inlets are fed, and the air coming out is that among the inlets 71 and 73 that has higher pressure.
  • the lower-pressure control valve 1 10 has two inlets 1 1 1 , 1 12 and one outlet 1 13, wherein the passage of air is allowed when the two inlets are fed, and the air that comes out is that from the inlet with lower pressure.
  • the system presents a pair of higher-pressure selective valves 170, which enable higher-pressure passage between two inlets.
  • the inlet 73 of the dual-pilot control valve 70 is constantly fed by the reservoir 410, and the inlet 132 of the control valve 130 is constantly fed by the reservoir 400.
  • the vehicle 200 when applied to its braking system, relies upon a traction control system 50, 60, 100 formed by a traction control valve 50, which controls two pressure control valves 60 of the ABS of the drive shaft by means of an electronic control central 100.
  • ABS Anti-lock braking system
  • ATC/ASR wheel drive control
  • the electronic central 100 has connection with velocity sensors 500 positioned on the wheels 1 1 , 12, 21 and 22 of the vehicle 200, with the traction control valve 50, with the pressure control valves 60 and with the brake sensor 210 associated to the brake pedal operated by the drive. It further has connection with a control panel 120 positioned in the driver's cabin, on which there is a operable switch 121 that turn on or off the on-ramp start aid function.
  • connection elements applicable to the particularity of the path to be traveled.
  • connection elements For instance, one may use cables, tubing elbows, "T's", among others, and one observes that the arrangement of these connections varies dramatically according to the vehicle, the components, the project particularities and still according to the preferences of the designer. Bearing this in mind, such connection elements will not be discriminated in this description, only the interaction between the circuit components.
  • the initial braking of the system of the present invention is similar to that used traditionally on haul trucks and rigid vehicles with pneumatic brakes.
  • the brake valve 40 receives compressed air from the reservoirs 400, 41 ⁇ in its two inlets 41 , 42, respectively, and when actuated it feeds the brakes 13, 14, 23, 24, 34 of all the axles 10, 20, 30 of the vehicle.
  • the compressed air from the outlet 44 of the brake valve 40 is led to the inlet 72 of the dual-pilot control valve 70, thus enabling passage of air to the brakes 23, 24.
  • the compressed air passes through the control valve 130.
  • the brake sensor 210 After the initial braking, and at the moment when the driver withdraws his feet from the brake pedal, the brake sensor 210 sends a signal to the electronic central 100 and the latter verifies the state of the switch 121 on the control panel 120. If it is actuated, this means that the on-ramp aid function is active, and the electronic central 100 actuates the traction control valve 50 and the pressure control valves 60 of the ABS of the drive shaft, and initiates the count of a predetermined time for operation of the assistance system.
  • the time used in this preferred embodiment is 3-second operation.
  • the traction control valve 50 is fed by the reservoir 400, and upon actuation it releases compressed air to the inlet 131 of the control valve 130, thus allowing passage of air to the brakes 13, 14 of the drive shaft 10.
  • the pressure control valves 60 of the ABS of the drive shaft actuated by the electronic central 100 keep the braking pressure used before in the initial braking, and so the braking of the drive shaft 10 is provided directly.
  • the compressed air flows to the inlets 1 1 1 1 , 1 12 of the lower-pressure control valve 1 10, passing through its outlet 1 13 and actuating the brakes 23 and 24 of the front axle 20 indirectly by means of the inlet 71 of the dual-pilot control valve 70.
  • the air from the outlet 1 13 of the lower-pressure control valve 1 10 is also led to the brakes 33, 34 of the connected axle 30 by means of a feeding line B and a control line A, passing through three other pressure control valves 140, 150, 160 connected to the reservoirs 420 and 430.
  • the valve 140 controls both the feeding pressure of the trailer (line B) and the control pressure (line A), while the valve 150 controls the pressure in the pneumatic line of ail the trailer axles.
  • the valve 160 has the function of releasing the pressure of the outlet of the relay valve of the trailer to the frailer brakes. Thus, one keeps the braking condition for the tow and for the front axle directly.
  • the electronic central 100 keeps the count of three seconds while the braking process discriminated above is kept.
  • the braking is interrupted if the count reaches three seconds or if the electronica central 100 feels that there is sufficient traction on the wheels to enable the vehicle to start on a ramp.
  • the electronic central 100 sends a signal to the control panel 120, which emits a sound signal to the driver, indicating that the on-ramp start system is about to be deactivated.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention concerne un système d'assistance de démarrage sur rampe pour des véhicules rigides et des véhicules de remorquage comprenant au moins un arbre d'entraînement, un essieu avant et un quelconque nombre d'essieux de remorquage, qui utilise un système de commande de traction (ATC/ASR) dérivé de l'ABS pour alimenter et maintenir la pression de freinage sur tous les freins du véhicule et du véhicule remorqué par le biais des soupapes du système de freinage classique, des soupapes ABS et du système ATC/ASR, le système étant commandé par une centrale électronique et par une vitesse de capteur et permettant, une fois que l'actionnement du frein de service a cessé et par confirmation de l'actionnement de la fonction d'assistance de démarrage sur rampe, l'agissement de la centrale électronique sur la soupape de commande de traction et les soupapes de commande de pression de manière à maintenir l'état de freinage pendant une durée prédéterminée.
PCT/BR2015/050208 2014-11-10 2015-11-09 Système d'assistance de démarrage sur rampe pour véhicules automobiles WO2016074054A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRBR102014028097-9 2014-11-10
BR102014028097A BR102014028097A2 (pt) 2014-11-10 2014-11-10 sistema de auxílio à partida em rampa para veículos automotivos

Publications (1)

Publication Number Publication Date
WO2016074054A1 true WO2016074054A1 (fr) 2016-05-19

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Application Number Title Priority Date Filing Date
PCT/BR2015/050208 WO2016074054A1 (fr) 2014-11-10 2015-11-09 Système d'assistance de démarrage sur rampe pour véhicules automobiles

Country Status (4)

Country Link
AR (1) AR102600A1 (fr)
BR (1) BR102014028097A2 (fr)
UY (1) UY36397A (fr)
WO (1) WO2016074054A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107933556A (zh) * 2016-10-13 2018-04-20 江苏卡威汽车工业集团有限公司 一种电动汽车坡道起步装置及方法
CN111114551A (zh) * 2018-10-31 2020-05-08 广州汽车集团股份有限公司 一种车辆坡道坡度识别方法和装置

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9301594A (pt) 1993-04-20 1994-11-08 Umberto Jose Fontes Sensor de deformação ou deslocamento e dispositivo de comando automático do freio em ladeiras
EP0839684A1 (fr) * 1996-11-05 1998-05-06 MAGNETI MARELLI S.p.A. Système pour commander le stationnement et le démarrage en pente d'un véhicule à moteur
EP1008503A2 (fr) * 1998-12-08 2000-06-14 Hyundai Motor Company Système de commande de freinage et méthode pour éviter qu'un véhicule roule le long d'une pente
FR2828450A1 (fr) * 2001-08-07 2003-02-14 Renault Dispositif d'assistance au demarrage en cote pour vehicule automobile
WO2004060734A1 (fr) * 2002-12-31 2004-07-22 Bendix Commercial Vehicle Systems Llc Systeme miniaturise de levier de frein a main
DE102004060255A1 (de) * 2003-12-17 2005-07-28 Continental Teves Ag & Co. Ohg Verfahren zur Verhinderung des Wegrollens eines Fahrzeugs
DE102005023876A1 (de) * 2004-06-11 2006-01-19 Continental Teves Ag & Co. Ohg Verfahren zum Aktivieren eines Anfahrvorgangs bei einer Anfahrhilfe
DE102006021652A1 (de) * 2005-05-12 2006-11-23 Continental Teves Ag & Co. Ohg Verfahren und Vorrichtung zum Unterstützen eines Anfahrvorgangs
DE102007023929A1 (de) * 2007-05-23 2008-11-27 Lucas Automotive Gmbh Technik zum Anfahren eines Kraftfahrzeugs auf einer geneigten Fahrstrecke
BRPI0801158A2 (pt) 2008-04-28 2010-01-12 Volkswagen Caminhoes E Enibus Ltda sistema automático para movimento veicular em um plano inclinado
DE102010050101A1 (de) * 2010-10-29 2012-05-03 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Druckmittelbetätigte Bremseinrichtung eines Fahrzeugs mit in ein Bremssteuergerät implementierten Steuerroutinen einer Berganfahrhilfe- oder Kriechunterdrückungs-Funktion
DE102012108702A1 (de) * 2012-09-17 2014-03-20 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Bremsteuerseinrichtung für ein Nutzfahrzeug mit einem Anhänger
DE102013016076A1 (de) * 2012-11-27 2014-05-28 Bendix Commercial Vehicle Systems, Llc System, Steuereinrichtung und Verfahren zur Verhinderung eines Wegrollens eines Fahrzeugs

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9301594A (pt) 1993-04-20 1994-11-08 Umberto Jose Fontes Sensor de deformação ou deslocamento e dispositivo de comando automático do freio em ladeiras
EP0839684A1 (fr) * 1996-11-05 1998-05-06 MAGNETI MARELLI S.p.A. Système pour commander le stationnement et le démarrage en pente d'un véhicule à moteur
BR9705535A (pt) 1996-11-05 1999-06-29 Magneti Marelli Spa Sistema de controle para partida em estacionamento e em subida de um veículo a motor
EP1008503A2 (fr) * 1998-12-08 2000-06-14 Hyundai Motor Company Système de commande de freinage et méthode pour éviter qu'un véhicule roule le long d'une pente
FR2828450A1 (fr) * 2001-08-07 2003-02-14 Renault Dispositif d'assistance au demarrage en cote pour vehicule automobile
WO2004060734A1 (fr) * 2002-12-31 2004-07-22 Bendix Commercial Vehicle Systems Llc Systeme miniaturise de levier de frein a main
DE102004060255A1 (de) * 2003-12-17 2005-07-28 Continental Teves Ag & Co. Ohg Verfahren zur Verhinderung des Wegrollens eines Fahrzeugs
DE102005023876A1 (de) * 2004-06-11 2006-01-19 Continental Teves Ag & Co. Ohg Verfahren zum Aktivieren eines Anfahrvorgangs bei einer Anfahrhilfe
DE102006021652A1 (de) * 2005-05-12 2006-11-23 Continental Teves Ag & Co. Ohg Verfahren und Vorrichtung zum Unterstützen eines Anfahrvorgangs
DE102007023929A1 (de) * 2007-05-23 2008-11-27 Lucas Automotive Gmbh Technik zum Anfahren eines Kraftfahrzeugs auf einer geneigten Fahrstrecke
BRPI0801158A2 (pt) 2008-04-28 2010-01-12 Volkswagen Caminhoes E Enibus Ltda sistema automático para movimento veicular em um plano inclinado
DE102010050101A1 (de) * 2010-10-29 2012-05-03 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Druckmittelbetätigte Bremseinrichtung eines Fahrzeugs mit in ein Bremssteuergerät implementierten Steuerroutinen einer Berganfahrhilfe- oder Kriechunterdrückungs-Funktion
DE102012108702A1 (de) * 2012-09-17 2014-03-20 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Bremsteuerseinrichtung für ein Nutzfahrzeug mit einem Anhänger
DE102013016076A1 (de) * 2012-11-27 2014-05-28 Bendix Commercial Vehicle Systems, Llc System, Steuereinrichtung und Verfahren zur Verhinderung eines Wegrollens eines Fahrzeugs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107933556A (zh) * 2016-10-13 2018-04-20 江苏卡威汽车工业集团有限公司 一种电动汽车坡道起步装置及方法
CN111114551A (zh) * 2018-10-31 2020-05-08 广州汽车集团股份有限公司 一种车辆坡道坡度识别方法和装置

Also Published As

Publication number Publication date
BR102014028097A2 (pt) 2016-05-31
UY36397A (es) 2016-06-30
AR102600A1 (es) 2017-03-08

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