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ES8801020A1 - Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola - Google Patents

Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola

Info

Publication number
ES8801020A1
ES8801020A1 ES557594A ES557594A ES8801020A1 ES 8801020 A1 ES8801020 A1 ES 8801020A1 ES 557594 A ES557594 A ES 557594A ES 557594 A ES557594 A ES 557594A ES 8801020 A1 ES8801020 A1 ES 8801020A1
Authority
ES
Spain
Prior art keywords
control system
timer
transmission control
guardian
automatic engine
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
Application number
ES557594A
Other languages
English (en)
Other versions
ES557594A0 (es
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of ES8801020A1 publication Critical patent/ES8801020A1/es
Publication of ES557594A0 publication Critical patent/ES557594A0/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • 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
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • B60K31/02—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism
    • B60K31/04—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
    • B60K31/042—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • 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
    • F16H61/0204—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—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 for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0019—Control system elements or transfer functions
    • B60W2050/0042—Transfer function lag; delays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2300/00—Indexing codes relating to the type of vehicle
    • B60W2300/15—Agricultural vehicles
    • B60W2300/152—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0638—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1005—Transmission ratio engaged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0616—Position of fuel or air injector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0644—Engine speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • 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
    • F16H2061/0015—Transmission control for optimising fuel consumptions
    • 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
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures
    • F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe ; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
    • 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
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/44—Inputs being a function of speed dependent on machine speed, e.g. the vehicle speed
    • 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
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established
    • 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
    • F16H61/70—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 specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Transmission Device (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Controls For Constant Speed Travelling (AREA)

Abstract

MODIFICACIONES EN UN SISTEMA DE CONTROL PARA UN VEHICULO ACCIONADO A MOTOR. CONSISTENTES EN QUE LA UNIDAD DE CONTROL (30) ESTA BASADA EN UN MICROPROCESADOR (U27) E INCLUYE UN TEMPORIZADOR GUARDIAN QUE RESTABLECERA EL MICROPROCRESADOR (U27) SI EL TEMPORIZADOR GUARDIAN NO ES RESTABLECIDO CADA 35,6 MILISEGUNDOS, HABIENDOSE PREVISTO CONTADORES EXTERNOS SEPARADOS CONTENIDOS EN EL TEMPORIZADOR DE INTERVALO PROGRAMABLE IC (U28), DONDE EL PRIMERO TEMPORIZA EL PERIODO DEL TREN DE IMPULSOS PROCEDENTES DEL PERCEPTOR DE VELOCIDAD DEL MOTOR, EL SEGUNDO TEMPORIZA LAS ANCHURAS DE LOS IMPULSOS DE LA SEÑAL MFF/SLP, Y EL TERCERO GENERA LA ANCHURA DE IMPULSOS DE SEÑAL DEL ESC QUE ES COMUNICADA AL REGULADOR. TIENE UTILIDAD EN TRACTORES AGRICOLAS Y SIMILARES.
ES557594A 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola Expired ES8801020A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75600385A 1985-07-17 1985-07-17

Publications (2)

Publication Number Publication Date
ES8801020A1 true ES8801020A1 (es) 1987-12-01
ES557594A0 ES557594A0 (es) 1987-12-01

Family

ID=25041613

Family Applications (6)

Application Number Title Priority Date Filing Date
ES556758A Expired ES8800403A1 (es) 1985-07-17 1986-06-25 Un aparato para controlar la velocidad del motor y la realizacion de transmision de un vehiculo, tal como un tractor agricola.
ES557591A Expired ES8801018A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola
ES557592A Expired ES8801019A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola
ES557593A Expired ES8900198A1 (es) 1985-07-17 1987-06-16 Un sistema de control para la transmision de vehiculo accionado por motor, tal como un tractor agricola.
ES557595A Expired ES8801021A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola
ES557594A Expired ES8801020A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola

Family Applications Before (5)

Application Number Title Priority Date Filing Date
ES556758A Expired ES8800403A1 (es) 1985-07-17 1986-06-25 Un aparato para controlar la velocidad del motor y la realizacion de transmision de un vehiculo, tal como un tractor agricola.
ES557591A Expired ES8801018A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola
ES557592A Expired ES8801019A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola
ES557593A Expired ES8900198A1 (es) 1985-07-17 1987-06-16 Un sistema de control para la transmision de vehiculo accionado por motor, tal como un tractor agricola.
ES557595A Expired ES8801021A1 (es) 1985-07-17 1987-06-16 Un sistema de control para un vehiculo accionado por motor, tal como un tractor agricola

Country Status (14)

Country Link
EP (6) EP0270196B1 (es)
JP (1) JP2597354B2 (es)
KR (1) KR940010693B1 (es)
CN (1) CN1003500B (es)
AR (1) AR246367A1 (es)
AT (6) ATE61977T1 (es)
AU (5) AU584717B2 (es)
BR (1) BR8603353A (es)
CA (1) CA1275470C (es)
DE (5) DE3678445D1 (es)
DK (1) DK340586A (es)
ES (6) ES8800403A1 (es)
MX (1) MX169335B (es)
ZA (1) ZA865301B (es)

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JP6002122B2 (ja) * 2013-12-24 2016-10-05 富士重工業株式会社 エンジン回転数表示装置
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ES557592A0 (es) 1987-12-01
ATE61977T1 (de) 1991-04-15
EP0270195A2 (en) 1988-06-08
ATE60009T1 (de) 1991-02-15
EP0270197A2 (en) 1988-06-08
EP0270196A3 (en) 1989-08-30
ATE51810T1 (de) 1990-04-15
ES557593A0 (es) 1989-03-16
AU606511B2 (en) 1991-02-07
AU584717B2 (en) 1989-06-01
ATE63724T1 (de) 1991-06-15
DE3677022D1 (de) 1991-02-21
EP0270195B1 (en) 1991-03-27
KR870001062A (ko) 1987-03-11
CN1003500B (zh) 1989-03-08
ES557595A0 (es) 1987-12-01
ES556758A0 (es) 1987-11-01
KR940010693B1 (ko) 1994-10-24
DK340586D0 (da) 1986-07-17
AU3255889A (en) 1989-06-29
JPS6250240A (ja) 1987-03-04
DE3679405D1 (de) 1991-06-27
EP0270195A3 (en) 1989-09-06
DE3670246D1 (de) 1990-05-17
EP0270196B1 (en) 1991-09-25
EP0270194A3 (en) 1988-08-03
EP0270194B1 (en) 1990-04-11
CA1275470C (en) 1990-10-23
DK340586A (da) 1987-01-18
CN86105849A (zh) 1987-01-21
EP0271159B1 (en) 1991-01-16
ES8801018A1 (es) 1987-12-01
ZA865301B (en) 1988-03-30
EP0213706A1 (en) 1987-03-11
EP0213706B1 (en) 1988-11-17
MX169335B (es) 1993-06-30
AU604188B2 (en) 1990-12-06
ATE67715T1 (de) 1991-10-15
ES8900198A1 (es) 1989-03-16
BR8603353A (pt) 1987-02-24
AU3255689A (en) 1989-08-10
AU3256389A (en) 1989-06-29
ES8801019A1 (es) 1987-12-01
DE3678445D1 (de) 1991-05-02
EP0270196A2 (en) 1988-06-08
EP0270194A2 (en) 1988-06-08
ES557591A0 (es) 1987-12-01
EP0270197A3 (en) 1989-11-02
AU3256289A (en) 1989-06-29
AR246367A1 (es) 1994-07-29
EP0271159A2 (en) 1988-06-15
JP2597354B2 (ja) 1997-04-02
ES8800403A1 (es) 1987-11-01
ATE38641T1 (de) 1988-12-15
AU606510B2 (en) 1991-02-07
AU5973686A (en) 1987-01-22
AU604189B2 (en) 1990-12-06
EP0270197B1 (en) 1991-05-22
ES557594A0 (es) 1987-12-01
ES8801021A1 (es) 1987-12-01
EP0271159A3 (en) 1989-10-25
DE3681739D1 (de) 1991-10-31

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