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A platform for research: civil engineering, architecture and urbanism
Closed loop drive circuit with external brake assist
The present disclosure refers to a hydrostatic drive for a vehicle (10), which may comprises an open circuit (100), a closed travel circuit (120), and an electronic controller (320). A main variable displacement hydraulic pump (102) may be configured to be driven by an internal combustion engine (12) equipped with a speed sensor (350). The main variable displacement hydraulic pump (102) may be configured to supply hydraulic fluid to at least one hydraulic consumer (34,44,50) via a hydraulic supply line (106). A pressure relief valve (118) may be connected to a reservoir (300) and may be permanently connected to the hydraulic supply line (106) such that hydraulic fluid in the hydraulic supply line (106) is discharged into the reservoir if a preset pressure level is reached in the open circuit. The electronic controller (320) may be configured to run a strong braking mode in which the electronic controller (320) at least partially increases the displacement of the main variable displacement hydraulic pump (102) such that hydraulic fluid is discharged via the permanently connected pressure relief valve (118) into the reservoir (300) if an engine speed is determined, based on a signal received from a speed sensor (350), which is higher than a predetermined maximum engine speed.
Closed loop drive circuit with external brake assist
The present disclosure refers to a hydrostatic drive for a vehicle (10), which may comprises an open circuit (100), a closed travel circuit (120), and an electronic controller (320). A main variable displacement hydraulic pump (102) may be configured to be driven by an internal combustion engine (12) equipped with a speed sensor (350). The main variable displacement hydraulic pump (102) may be configured to supply hydraulic fluid to at least one hydraulic consumer (34,44,50) via a hydraulic supply line (106). A pressure relief valve (118) may be connected to a reservoir (300) and may be permanently connected to the hydraulic supply line (106) such that hydraulic fluid in the hydraulic supply line (106) is discharged into the reservoir if a preset pressure level is reached in the open circuit. The electronic controller (320) may be configured to run a strong braking mode in which the electronic controller (320) at least partially increases the displacement of the main variable displacement hydraulic pump (102) such that hydraulic fluid is discharged via the permanently connected pressure relief valve (118) into the reservoir (300) if an engine speed is determined, based on a signal received from a speed sensor (350), which is higher than a predetermined maximum engine speed.
Closed loop drive circuit with external brake assist
Antriebsschaltung mit geschlossener Schleife und externer Bremshilfe
Circuit de commande à boucle fermée avec freinage assisté externe
BERG TORSTEN (author)
2019-11-13
Patent
Electronic Resource
English
IPC:
B60T
Bremsanlagen für Fahrzeuge oder Teile davon
,
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
/
E02F
Baggern
,
DREDGING
/
F04B
Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten
,
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
/
F16H
Getriebe
,
GEARING
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