IT1241614B - Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori. - Google Patents

Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori.

Info

Publication number
IT1241614B
IT1241614B IT67756A IT6775690A IT1241614B IT 1241614 B IT1241614 B IT 1241614B IT 67756 A IT67756 A IT 67756A IT 6775690 A IT6775690 A IT 6775690A IT 1241614 B IT1241614 B IT 1241614B
Authority
IT
Italy
Prior art keywords
electronically
controlled
valves
power
control circuit
Prior art date
Application number
IT67756A
Other languages
English (en)
Other versions
IT9067756A0 (it
IT9067756A1 (it
Inventor
Andrea Assanelli
Original Assignee
Same Spa
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 Same Spa filed Critical Same Spa
Priority to IT67756A priority Critical patent/IT1241614B/it
Publication of IT9067756A0 publication Critical patent/IT9067756A0/it
Priority to AT91830399T priority patent/ATE131915T1/de
Priority to DE69115629T priority patent/DE69115629T2/de
Priority to EP91830399A priority patent/EP0479737B1/en
Publication of IT9067756A1 publication Critical patent/IT9067756A1/it
Application granted granted Critical
Publication of IT1241614B publication Critical patent/IT1241614B/it

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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/0206—Control by fluid pressure in a system with a plurality of fluid-actuated clutches
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/066—Control of fluid pressure, e.g. using an accumulator
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0275—Two valves arranged in parallel, e.g. one for coarse and the other for fine control during supplying or draining fluid from the actuation cylinder
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0281—Complex circuits with more than two valves in series or special arrangements thereof not provided for in previous groups
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/11—Application
    • F16D2500/1107—Vehicles
    • F16D2500/111—Agricultural
    • 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
    • F16H2061/0258—Proportional solenoid valve
IT67756A 1990-10-03 1990-10-03 Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori. IT1241614B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT67756A IT1241614B (it) 1990-10-03 1990-10-03 Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori.
AT91830399T ATE131915T1 (de) 1990-10-03 1991-09-25 Hydraulikkreis zur betätigung von lastschaltkupplungen für zugmaschinengetriebe
DE69115629T DE69115629T2 (de) 1990-10-03 1991-09-25 Hydraulikkreis zur Betätigung von Lastschaltkupplungen für Zugmaschinengetriebe
EP91830399A EP0479737B1 (en) 1990-10-03 1991-09-25 A hydraulic circuit for the powershift operation of clutches for tractor gearboxes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67756A IT1241614B (it) 1990-10-03 1990-10-03 Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori.

Publications (3)

Publication Number Publication Date
IT9067756A0 IT9067756A0 (it) 1990-10-03
IT9067756A1 IT9067756A1 (it) 1992-04-03
IT1241614B true IT1241614B (it) 1994-01-25

Family

ID=11305052

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67756A IT1241614B (it) 1990-10-03 1990-10-03 Circuito idraulico di comando di innesti a frizione in power-shift per cambi di trattori.

Country Status (4)

Country Link
EP (1) EP0479737B1 (it)
AT (1) ATE131915T1 (it)
DE (1) DE69115629T2 (it)
IT (1) IT1241614B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117736C1 (it) * 1991-05-30 1992-05-21 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE19546292A1 (de) * 1995-12-12 1997-06-19 Zahnradfabrik Friedrichshafen Verfahren zur automatisierten Abstimmung des Befüllvorganges von Schaltelementen
US5938557A (en) * 1996-04-19 1999-08-17 Torotrak (Development) Limited CVT Control System
GB2312258A (en) * 1996-04-19 1997-10-22 Torotrak Dev Ltd CVT control system has regime change clutches controlled independently of variator
FR2762880A1 (fr) * 1997-04-30 1998-11-06 Hydrokit Valve de commande automatique de l'embrayage d'un vehicule dans le domaine agricole ou des travaux publics
FR2769677B1 (fr) * 1997-10-10 1999-12-03 Renault Procede et dispositif de controle de l'alimentation des recepteurs hydrauliques d'une transmission automatique
DE19908602A1 (de) * 1999-02-27 2000-09-14 Getrag Getriebe Zahnrad Automatisierter Antriebsstrang für ein Kraftfahrzeug und Verfahren zum Steuern eines Antriebsstranges
JP2001213201A (ja) 1999-12-17 2001-08-07 Getrag Getriebe & Zahnradfab Hermann Hagenmeyer Gmbh & Co 自動車のための自動的な駆動機構列並びに駆動機構列を制御する方法
DE10153722A1 (de) 2001-10-31 2003-05-22 Volkswagen Ag Verfahren zur Schaltsteuerung eines Lastschaltgetriebes
ES2262375B1 (es) * 2003-12-04 2007-12-01 Iberica A.G., S.A. Circuito hidraulico y/o neumatico para el control de par de un embrague proporcional hidraulico y/o neumatico, en especial para un dispositivo de transporte de hojas de material laminar.
CN109058319B (zh) * 2018-09-14 2023-12-22 中国船舶重工集团公司第七0三研究所 阶梯油压调节装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653351A (en) * 1986-02-12 1987-03-31 General Motors Corporation Clutch-to-clutch power-on downshifting in a motor vehicle automatic transmission
US5113720A (en) * 1987-06-24 1992-05-19 Kabushiki Kaisha Komatsu Seisakusho Apparatus for controlling gear box
US4924983A (en) * 1987-12-10 1990-05-15 Kubota, Ltd. Propelling clutch apparatus for a working vehicle
EP0356527B1 (en) * 1988-02-19 1994-06-01 Kabushiki Kaisha Komatsu Seisakusho Clutch switching circuit of nonstage transmission
DE3811615C1 (en) * 1988-04-07 1989-11-30 Hanomag Ag, 3000 Hannover, De Control device for friction clutches, shiftable by hydraulic pressure, of a multigear power-shift transmission for vehicles

Also Published As

Publication number Publication date
EP0479737B1 (en) 1995-12-20
DE69115629T2 (de) 1996-08-01
DE69115629D1 (de) 1996-02-01
ATE131915T1 (de) 1996-01-15
IT9067756A0 (it) 1990-10-03
IT9067756A1 (it) 1992-04-03
EP0479737A1 (en) 1992-04-08

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971031