FR3115572B1 - Improved hydraulic assist circuit - Google Patents

Improved hydraulic assist circuit Download PDF

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Publication number
FR3115572B1
FR3115572B1 FR2010897A FR2010897A FR3115572B1 FR 3115572 B1 FR3115572 B1 FR 3115572B1 FR 2010897 A FR2010897 A FR 2010897A FR 2010897 A FR2010897 A FR 2010897A FR 3115572 B1 FR3115572 B1 FR 3115572B1
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FR
France
Prior art keywords
hydraulic
improved hydraulic
assist circuit
circuit
hydraulic assist
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.)
Active
Application number
FR2010897A
Other languages
French (fr)
Other versions
FR3115572A1 (en
Inventor
André Prigent
Loris Taxil
Gery Depierre
Christophe Patte
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.)
Poclain Hydraulics Industrie
Original Assignee
Poclain Hydraulics Industrie
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 Poclain Hydraulics Industrie filed Critical Poclain Hydraulics Industrie
Priority to FR2010897A priority Critical patent/FR3115572B1/en
Priority to PCT/FR2021/051862 priority patent/WO2022084639A1/en
Publication of FR3115572A1 publication Critical patent/FR3115572A1/en
Application granted granted Critical
Publication of FR3115572B1 publication Critical patent/FR3115572B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
    • F16H61/4139—Replenishing or scavenging pumps, e.g. auxiliary charge pumps
    • 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
    • F16H2059/6838—Sensing gearing status of hydrostatic transmissions
    • F16H2059/6861—Sensing gearing status of hydrostatic transmissions the pressures, e.g. high, low or differential pressures
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4192—Detecting malfunction or potential malfunction, e.g. fail safe

Abstract

Circuit d’assistance hydraulique amélioré Système d’assistance hydraulique (1) comprenant une pompe hydraulique (12) reliée à un moteur hydraulique (20) par un circuit hydraulique, le système (1) comprenant en outre une pompe de gavage (40) adaptée pour prélever un fluide dans un réservoir (R) et pour délivrer une pression de gavage dans le circuit hydraulique, ledit système (1) étant caractérisé en ce qu’il comprend en outre un dispositif de pilotage (80, 90, 160, 170) adapté pour sélectivement relier la pompe de gavage (40) au réservoir (R), de manière à ce que le débit délivré par la pompe de gavage soit au moins partiellement déversé dans le réservoir (R). Figure pour l’abrégé : Fig. 2.Improved hydraulic assistance circuit Hydraulic assistance system (1) comprising a hydraulic pump (12) connected to a hydraulic motor (20) by a hydraulic circuit, the system (1) further comprising a booster pump (40) adapted to take a fluid from a reservoir (R) and to deliver a booster pressure in the hydraulic circuit, said system (1) being characterized in that it further comprises a piloting device (80, 90, 160, 170) adapted to selectively connect the booster pump (40) to the tank (R), so that the flow delivered by the booster pump is at least partially discharged into the tank (R). Figure for abstract: Fig. 2.

FR2010897A 2020-10-23 2020-10-23 Improved hydraulic assist circuit Active FR3115572B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2010897A FR3115572B1 (en) 2020-10-23 2020-10-23 Improved hydraulic assist circuit
PCT/FR2021/051862 WO2022084639A1 (en) 2020-10-23 2021-10-22 Improved auxiliary hydraulic circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2010897 2020-10-23
FR2010897A FR3115572B1 (en) 2020-10-23 2020-10-23 Improved hydraulic assist circuit

Publications (2)

Publication Number Publication Date
FR3115572A1 FR3115572A1 (en) 2022-04-29
FR3115572B1 true FR3115572B1 (en) 2023-01-27

Family

ID=73793490

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2010897A Active FR3115572B1 (en) 2020-10-23 2020-10-23 Improved hydraulic assist circuit

Country Status (2)

Country Link
FR (1) FR3115572B1 (en)
WO (1) WO2022084639A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541982U (en) * 1978-09-12 1980-03-18
US6491118B1 (en) * 2000-11-20 2002-12-10 Deere & Company Hydrostatic system with charge flow monitoring
FR2956462B1 (en) * 2010-02-18 2012-05-18 Poclain Hydraulics Ind HYDRAULIC TRANSMISSION DEVICE IN WHICH THE MAIN PUMP CAN BE ACTUATED PERMANENTLY.
FR2996177B1 (en) * 2012-09-28 2014-10-03 Poclain Hydraulics Ind VEHICLE WITH IMPROVED HYDRAULIC ASSISTANCE INTEGRATING A SYSTEM FOR MANAGING OIL LEVELS IN THE HOUSINGS OF HYDRAULIC DEVICES
FR3026811B1 (en) * 2014-10-03 2016-12-09 Poclain Hydraulics Ind HYDRAULIC ASSISTANCE METHOD FOR DRIVING A LOW-SPEED VEHICLE

Also Published As

Publication number Publication date
WO2022084639A1 (en) 2022-04-28
FR3115572A1 (en) 2022-04-29

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