EP1815168A1 - Dispositif pour appliquer une pression a un actionneur de piston - Google Patents

Dispositif pour appliquer une pression a un actionneur de piston

Info

Publication number
EP1815168A1
EP1815168A1 EP05806754A EP05806754A EP1815168A1 EP 1815168 A1 EP1815168 A1 EP 1815168A1 EP 05806754 A EP05806754 A EP 05806754A EP 05806754 A EP05806754 A EP 05806754A EP 1815168 A1 EP1815168 A1 EP 1815168A1
Authority
EP
European Patent Office
Prior art keywords
pressure
transmission
control
valve
piston actuator
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Withdrawn
Application number
EP05806754A
Other languages
German (de)
English (en)
Inventor
Markus Deeg
Friedbert Röther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
ZF Friedrichshafen AG
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
ZF Friedrichshafen AG
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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH, Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH, ZF Friedrichshafen AG filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP1815168A1 publication Critical patent/EP1815168A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/2807—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • F16H2061/305—Accumulators for fluid supply to the servo motors, or control thereof
    • 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
    • F16H2302/00—Determining the way or trajectory to new ratio, e.g. by determining speed, torque or time parameters for shift transition
    • F16H2302/04—Determining a modus for shifting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19251—Control mechanism

Definitions

  • the present invention relates to a device for pressurizing a piston actuator provided for carrying out gear shift functions which originates from an energy store and is supplied to the piston actuator via a valve device, wherein a pressure regulating and / or control device is provided with which the pressure with which the piston actuator is acted upon, regulated and / or can be controlled.
  • the pressure regulation or control in dependence on transmission parameters, it is possible to adapt the force used for actuating the control elements of the transmission to the current operating state of the transmission and thus to avoid increased mechanical stress.
  • the actuation of the piston actuator takes place at a constant pressure, which is taken from a compressed-air reservoir. Accordingly, provided in the transmission actuating elements are moved with the force resulting from this constant pressure.
  • the pressure held in the compressed air reservoir must be selected so that even under extreme operating conditions, for example very low temperatures, a gear change can take place safely. If there are no extreme operating conditions in which the control elements of the transmission must be moved with a high force, the constant pressure leads to an increased mechanical load on the control elements of the transmission, which may in particular include forks and stops, and thus to a higher wear.
  • the device according to the invention is based on the state of the art according to the preamble in that the pressure regulating and / or controlling device regulates and / or controls the pressure in dependence on at least one of the following variables:
  • Incline of the distance covered by a motor vehicle to which the transmission is assigned is assigned.
  • the adaptation of the shifting forces to at least one, but preferably to all of the mentioned variables reduces the mechanical loading of the adjusting elements of the transmission to the minimum required in the respective operating state of the entire vehicle, whereby the wear is minimized. For example, high switching forces at low temperatures and lower switching forces at normal operating temperatures can be selected. Furthermore, it is possible to generate higher shifting forces in a fully loaded vehicle than in an empty or only slightly loaded vehicle. Additionally or alternatively It may be advantageous to generate higher switching forces when traveling uphill than during a descent.
  • the pressure regulating and / or controlling device comprises a relay valve.
  • a relay valve is suitable for influencing a working pressure as a function of a control pressure applied to the relay valve, for example such that the working pressure corresponds to the control pressure.
  • the relay valve has a control input to which a control pressure set via a solenoid valve device can be supplied.
  • the pressure medium volume flow is comparatively small, so that the magnetic valves of the solenoid valve device can be designed to be small and thus cost-effective.
  • the solenoid valve device is controlled by an electronic control unit.
  • the electronic control unit may in particular be a control unit which is present without any problems and whose functionality is extended by the actuation of the solenoid valve device.
  • the pressure regulating and / or control device comprises a pressure sensor whose
  • Output signal is supplied to the electronic control unit.
  • the pressure sensor in an advantageous manner detect the working directivity set via the relay valve, which is used to actuate the piston actuator.
  • the pressure regulating and / or control device is provided between the energy storage device and the valve device.
  • this arrangement of the pressure control and / or control means allows the invention to be used with comparatively minor changes to the system.
  • Figure 1 is a schematic representation of an embodiment of the device according to the invention.
  • the device shown comprises an energy storage device 10 in the form of a compressed air reservoir, which is fed in a known manner by a compressor (not shown). To actuate a piston actuator 14 this is supplied via a valve device 12 compressed air from the energy storage 10.
  • the valve device 12 is designed to provide a lower cylinder section 32 and an upper cylinder section 34 of the piston actuator 14 either with its inlet 36 or with a pressure sensor. ke 28 to connect, which may be, for example, a regeneration air tank.
  • the valve device 12 may, for example, contain 2 solenoid valves, which are actuated electrically by an electronic control unit 24 in a suitable manner, as indicated by the dot-dash connection between the electronic control unit 24 and the valve device 12.
  • the pressure regulating and / or control device provided according to the invention, wherein in the illustrated case it is a pressure regulating device.
  • the core of the pressure control device forms a Relaisven ⁇ valve 20, which is designed to provide a voltage applied to its Steuer ⁇ input 26 control pressure at the input 36 of the valve device 12 is available.
  • the height of the control pressure applied to the input 36 of the relay valve 20 is set via 2 solenoid valves 16, 18, which are also controlled by the electronic control unit 24.
  • the solenoid valve 16 forms an inlet valve and the solenoid valve 18 forms an outlet valve.
  • the inlet valve 16 can be controlled by the electronic control unit 24 with the exhaust valve 18 closed in such a way with a pulse-width-modulated signal that at the control input 26 of the relay valve 20 a Pressure is generated, which is half as high as the pressure in the energy storage 10. Assuming that there is a pressure of 10 bar in the energy store 10, this would mean that a pressure of 5 bar would be applied both to the control input 26 of the relay valve 20 and to the input 36 of the valve device 12. With regard to the control pressure, only an extremely low pressure medium volume flow occurs, while the pressure medium volume flow through the valve device 12 can be considerable.
  • the outlet valve 18 is suitably actuated by the electronic control unit 24 when the inlet valve 16 is closed in order to open until the desired pressure is applied to the control input 26.
  • the control input 26 is connected via the outlet valve 18 with a pressure sink 28.
  • the illustrated pressure control device further comprises a pressure sensor 22, with which the pressure at the input 36 of the valve device 12 can be detected and supplied to the electronic control unit 24 in the form of an electrical signal. As a result, a real control loop is formed.
  • the electronic control unit 24 is thus able to regulate the height of the pressure used to actuate the piston actuator 14 as a function of the electronic control unit known operating states to transmit switching forces in the appropriate height via the control element 38. For example, at low temperatures, a fully loaded vehicle or a hill ride higher switching forces can be selected as at normal operating temperatures, a discharged vehicle or a descent. As a result, the mechanical loading of the piston actuator 14, the actuating element 38 or other (not shown) transmission components can be reduced to a minimum.
  • piston actuator 14 is illustrated in the illustrated embodiment, it will be appreciated that in actual embodiments, multiple such piston actuators may be present. These are then each associated with a valve device 12 corresponding valve device whose input to the input 36 of the Ventil ⁇ device 12, d. H. with the output of the relay valve 20, is in communication.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un dispositif pour soumettre un actionneur de piston (14) destiné à effectuer des changements de vitesse à une pression qui est issue d'un réservoir d'énergie (10), et qui est transportée jusqu'à l'actionneur de piston par l'intermédiaire d'un dispositif de soupape (12). Selon l'invention, un dispositif de régulation et/ou de commande de pression (16, 18, 20, 22, 24) sert à réguler et/ou commander la pression qui est appliquée à l'actionneur de piston. Cette invention est caractérisée en ce que ledit dispositif de régulation et/ou de commande de pression (16, 18, 20, 22, 24) régule et/ou commande la pression en fonction d'au moins une des grandeurs suivantes : la température, en particulier la température de fonctionnement de la transmission ; l'état de charge d'un véhicule automobile auquel la transmission est associée, et ; l'inclinaison du parcours effectué par le véhicule automobile auquel la transmission est associée.
EP05806754A 2004-11-15 2005-11-15 Dispositif pour appliquer une pression a un actionneur de piston Withdrawn EP1815168A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004055030A DE102004055030B4 (de) 2004-11-15 2004-11-15 Vorrichtung zur Beaufschlagung eines Kolbenstellers mit Druck
PCT/EP2005/012231 WO2006050993A1 (fr) 2004-11-15 2005-11-15 Dispositif pour appliquer une pression a un actionneur de piston

Publications (1)

Publication Number Publication Date
EP1815168A1 true EP1815168A1 (fr) 2007-08-08

Family

ID=35502663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05806754A Withdrawn EP1815168A1 (fr) 2004-11-15 2005-11-15 Dispositif pour appliquer une pression a un actionneur de piston

Country Status (4)

Country Link
US (1) US7814750B2 (fr)
EP (1) EP1815168A1 (fr)
DE (1) DE102004055030B4 (fr)
WO (1) WO2006050993A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2061444T3 (da) * 2006-09-11 2011-06-27 Bausch & Lomb Sammensætninger og fremgangsmåder til behandling, kontrol, reducering, forbedring eller forebyggelse af allergi
DE102011086134A1 (de) * 2011-11-11 2013-05-16 Zf Friedrichshafen Ag Verfahren zur Steuerung von Schaltabläufen eines Getriebes
US9334752B2 (en) * 2012-03-09 2016-05-10 General Electric Company System and device for over-speed protection of a turbo-machine
CN105593536B (zh) * 2013-07-18 2017-07-07 Abb 技术有限公司 具有故障冻结模式的分立式先导级阀装置
US9760097B2 (en) 2015-06-03 2017-09-12 Emerson Process Management Regulator Technologies, Inc. Adjustable deadband control system
US10409298B2 (en) * 2017-04-27 2019-09-10 Marotta Controls, Inc. Electronically controlled regulator
DE102017214111A1 (de) * 2017-08-11 2019-02-14 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Elektropneumatisch geregelte Ansteuerung eines Stromabnehmers
DE102017214115A1 (de) * 2017-08-11 2019-02-14 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Vorrichtung zur Steuerung einer Anpresskraft eines Stromabnehmers mit einem Relaisventil
JP7424322B2 (ja) * 2021-01-19 2024-01-30 Smc株式会社 流体圧力制御装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315221A1 (de) * 1983-04-27 1984-10-31 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Betaetigungseinrichtung zum schalten von gaengen und gassen eines fahrzeug-getriebes
US5257193A (en) 1987-02-04 1993-10-26 Kabushiki Kaisha Komatsu Seisakusho Method of automatically changing the speed stage of a construction vehicle based on vehicle loading
JP2668851B2 (ja) * 1988-01-19 1997-10-27 マツダ株式会社 無段変速機の制御装置
EP0782675B1 (fr) 1995-07-26 2001-10-24 Luk Leamington Limited Mecanismes de selection du rapport de transmission
DE19931973A1 (de) 1999-07-09 2001-01-11 Wabco Gmbh & Co Ohg Einrichtung zum Steuern einer Stelleinrichtung für ein Getriebe
DE10002693A1 (de) * 2000-01-22 2001-07-26 Wabco Gmbh & Co Ohg Steuereinrichtung für ein Getriebe
JP3634733B2 (ja) * 2000-09-22 2005-03-30 Ｓｍｃ株式会社 流体圧力調整装置
KR100806515B1 (ko) 2000-09-28 2008-02-21 루크 라멜렌 운트 쿠플룽스바우베타일리궁스 카게 자동차의 자동 트랜스미션에서 기어 시프트의 안정레벨을 변경하기 위한 장치 및 방법
DE10249341A1 (de) * 2002-10-23 2004-05-06 Zf Friedrichshafen Ag Druckregelungsvorrichtung für ein Betätigungsmittel eines Kraftfahrzeuges
US6874383B2 (en) * 2003-06-23 2005-04-05 Zf Meritor, Llc Adaptive shift sequencing
DE102004019215A1 (de) * 2004-04-21 2005-11-24 Zf Friedrichshafen Ag Verfahren zur Einstellung der Schaltdauer eines Automatgetriebes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006050993A1 *

Also Published As

Publication number Publication date
DE102004055030B4 (de) 2009-09-10
US20070272047A1 (en) 2007-11-29
WO2006050993A1 (fr) 2006-05-18
DE102004055030A1 (de) 2006-05-24
US7814750B2 (en) 2010-10-19

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