ES2047923T3 - Elemento de bloqueo para impedir en funcion de la velocidad del motor los retrocesos inaceptables en los engranajes de cambio de velocidad de los vehiculos automoviles. - Google Patents

Elemento de bloqueo para impedir en funcion de la velocidad del motor los retrocesos inaceptables en los engranajes de cambio de velocidad de los vehiculos automoviles.

Info

Publication number
ES2047923T3
ES2047923T3 ES90905493T ES90905493T ES2047923T3 ES 2047923 T3 ES2047923 T3 ES 2047923T3 ES 90905493 T ES90905493 T ES 90905493T ES 90905493 T ES90905493 T ES 90905493T ES 2047923 T3 ES2047923 T3 ES 2047923T3
Authority
ES
Spain
Prior art keywords
pressure
valve
engine
gear
acting
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.)
Expired - Lifetime
Application number
ES90905493T
Other languages
English (en)
Inventor
Helmut Eymuller
Siegfried Stutzle
Jurgen Legner
Gerhard Buck
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.)
ZF Friedrichshafen AG
Original Assignee
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Application granted granted Critical
Publication of ES2047923T3 publication Critical patent/ES2047923T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16H61/16—Inhibiting  or initiating  shift during unfavourable conditions , e.g. preventing forward-reverse shift at high vehicle speed, preventing engine overspeed  
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0262—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 characterised by the signals used the signals being hydraulic
    • F16H61/0265—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 characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
    • F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0202—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 characterised by the signals used the signals being electric
    • F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
    • F16H2061/0253—Details of electro hydraulic valves, e.g. lands, ports, spools or springs
    • 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
    • F16H61/16—Inhibiting  or initiating  shift during unfavourable conditions , e.g. preventing forward-reverse shift at high vehicle speed, preventing engine overspeed  
    • F16H2061/165—Preventing reverse gear shifts if vehicle speed is too high for safe shifting

Landscapes

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

Abstract

LA INVENCION CONCIERNE A UN DISPOSITIVO DE PROTECCION DEPENDIENTE DE UN MOTOR DE RPM PARA PREVENIR LOS CAMBIOS DESCENDENTES NO PERMITIDOS EN CAJAS DE CAMBIO DE VEHICULOS A MOTOR, QUE COMPRENDE UNA VALVULA PILOTO (1) Y UNA VALVULA DE CONTROL (2), TENIENDO CADA UNA DOS PISTONES. LA VALVULA DE CONTROL (2) ES CONMUTADA A UNA POSICION POR LA PRESION QUE ACTUA EN LA SUPERFICIE (36) DEL PISTON DE LA VALVULA DE CONTROL (31), CUANDO ESTA PRESION EXCEDE UNA PRESION DADA PRODUCIDA POR UNA BOMBA DE BAJA PRESION (20) QUE FUNCIONA DEPENDIENDO DE UN MOTOR DE RPM. LA VALVULA DE CONTROL (2) ESTA SOLO EN CONTACTO CON EL MEDIO DE PRESION TRANSPORTADO POR LA BOMBA DE BAJA PRESION (20) Y CONTROLA LA SUPERFICIE EXTREMA GRANDE (4) Y LA SUPERFICIE ANULAR (41) DEL PISTON DE LA VALVULA PILOTO DE DISEÑO ESCALONADO (38). SI, CON UNA MARCHA ALTA Y CON EL MOTOR DE RPM POR ENCIMA DE UN LIMITE DADO, LA VALVULA DE CAMBIO DE MARCHA (7) SE CAMBIA A SU POSICION DE UNA MARCHA CORTA, LA VALVULA DEL PISTON (1) PROTEGE A LA PRESION ACTUAR EN EL DISPOSITIVO DE ACTUACION DE MARCHA CORTA (15). AL MISMO TIEMPO, LA PRESION SIGUE ACTUANDO EN EL DISPOSITIVO DE ACTIVACION DE UNA MARCHA LARGA (16), MANTENIENDO ASI LA CAJA DE CAMBIOS EN LA MARCHA LARGA.
ES90905493T 1989-04-08 1990-04-05 Elemento de bloqueo para impedir en funcion de la velocidad del motor los retrocesos inaceptables en los engranajes de cambio de velocidad de los vehiculos automoviles. Expired - Lifetime ES2047923T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3911519 1989-04-08

Publications (1)

Publication Number Publication Date
ES2047923T3 true ES2047923T3 (es) 1994-03-01

Family

ID=6378218

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90905493T Expired - Lifetime ES2047923T3 (es) 1989-04-08 1990-04-05 Elemento de bloqueo para impedir en funcion de la velocidad del motor los retrocesos inaceptables en los engranajes de cambio de velocidad de los vehiculos automoviles.

Country Status (8)

Country Link
US (1) US5172611A (es)
EP (1) EP0466750B1 (es)
JP (1) JP2957270B2 (es)
KR (1) KR0148001B1 (es)
DE (1) DE59003807D1 (es)
ES (1) ES2047923T3 (es)
WO (1) WO1990012228A1 (es)
YU (1) YU50490A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130265C2 (de) * 1991-09-12 2003-08-07 Bayerische Motoren Werke Ag Gangwechselsteuerung in Kraftfahrzeugen
JPH07217736A (ja) * 1993-12-27 1995-08-15 Daewoo Heavy Ind Co Ltd 車両用変速機のダウンシフト防止装置
DE4414141A1 (de) * 1994-04-22 1995-10-26 Zahnradfabrik Friedrichshafen Hydraulische Schalteinrichtung für ein mehrgängiges Fahrzeuggetriebe
US7416265B2 (en) 2002-11-26 2008-08-26 Caterpillar Inc. Apparatus and method for varying brake response of a vehicle
CN119103340A (zh) * 2024-08-20 2024-12-10 杭州前进齿轮箱集团股份有限公司 一种液压降档控制方法及机构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040195C3 (de) * 1969-09-13 1980-08-21 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Fahrgeschwindigkeitsabhängige Sperre zum Verhindern unzulässiger Rückschaltungen in Kraftfahrzeugwechselgetrieben
DE1946496C3 (de) * 1969-09-13 1979-10-11 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Fahrgeschwindigkeitsabhängige Sperre zum Verhindern unzulässiger Rückschaltungen in Kraftfahrzeug-Wechselgetrieben
US3937107A (en) * 1974-12-23 1976-02-10 General Motors Corporation Downshift inhibitor for a powershift transmission
DE2604593C3 (de) * 1976-02-06 1978-10-05 Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Hydraulische Steuerungseinrichtung mit Vorwahl für Wendeschaltgetriebe
US4438666A (en) * 1981-12-16 1984-03-27 Eaton Corporation Speed responsive reverse control
HU193455B (en) * 1984-12-28 1987-10-28 Ustav Pro Vyzkum Motorovych Vo Hydraulic coupling arrangement for controlling the automatic two gear ratio transmission machinery of motor vehicles
EP0305390B1 (de) * 1986-05-02 1990-04-04 ZF FRIEDRICHSHAFEN Aktiengesellschaft Elektro-hydraulische steuerung für ein automatgetriebe
JP2689421B2 (ja) * 1987-02-25 1997-12-10 三菱自動車工業株式会社 車両用自動変速機の油圧制御装置
JPH028551A (ja) * 1988-06-27 1990-01-12 Daikin Mfg Co Ltd 自動車変速機の変速段切り換え制御装置

Also Published As

Publication number Publication date
DE59003807D1 (de) 1994-01-20
YU50490A (sh) 1994-01-20
JPH04504459A (ja) 1992-08-06
EP0466750B1 (de) 1993-12-08
EP0466750A1 (de) 1992-01-22
US5172611A (en) 1992-12-22
KR920701722A (ko) 1992-08-12
JP2957270B2 (ja) 1999-10-04
WO1990012228A1 (de) 1990-10-18
KR0148001B1 (ko) 1998-08-17

Similar Documents

Publication Publication Date Title
FR2442740B1 (fr) Circuit hydraulique pour un vehicule a traction hydraulique
FR2523046B1 (fr) Dispositif de commande pour un embrayage de vehicule automobile
US4023425A (en) Centrifugal fluid expansible pulley with manifold vacuum control means
KR890009678A (ko) 유압조작이 가능한 변속수단을 구비한 작업차용 유압제어 회로
GB1536667A (en) Hydraulic motor supply systems
ES291110Y (es) Caja de cojinete para palanca de cambio de velocidades para vehiculo automovil
FR2445913A1 (fr) Dispositif de commande d'une boite de vitesses automatique de vehicule automobile
US3395617A (en) Servo motor for positioning a valve as a function of engine load
US2878756A (en) Variable displacement pump and pressure responsive control means therefor
US4625591A (en) Creep preventing device for vehicles equipped with an automatic transmission
US3533230A (en) Hydraulic transmission mechanism for vehicles
US5172611A (en) Engine-rpm-dependent arrest device to prevent non-permitted down shifts in motor vehicle gearboxes
US3508583A (en) Servo control valve
KR100235715B1 (ko) 단접점 조정식 클러치 마스터 실린더 제어기구
US3399531A (en) Hydraulic transmission systems
GB1164419A (en) Improvements in and relating to Electro-Hydraulic Control devices for Overriding the Controls at the Main Driving Position in Motor Vehicles, having Automatic Gear Shifting Mechanism, from a Second Driving Position
GB1571426A (en) Internal combustion engine mechanical speed governors
GB1013592A (en) Variable ratio transmission control system
US2778345A (en) Hydraulic windshield wiper motor
GB1505788A (en) Device for regulating the operation of the transmission of a motor vehicle having a continuously variable gear
US3433098A (en) Transmission having speed responsive manual selector valve blockers for forward and reverse speeds
GB1116863A (en) Improvements in and relating to vehicle steering systems
SU893662A1 (ru) Рулевое управление транспортного средства
KR100334270B1 (ko) 자동변속차량용 클러치 작동구조
GB1498393A (en) Device for regulating the transmission of a vehicle incorporating a continuously variable gear and a reverse gear

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 466750

Country of ref document: ES