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1. (WO2006011836) HYDRAULIC SYSTEM AND WORK MACHINE COMPRISING SUCH A SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2006/011836 International Application No.: PCT/SE2005/000998
Publication Date: 02.02.2006 International Filing Date: 22.06.2005
IPC:
B62D 5/07 (2006.01) ,E02F 9/22 (2006.01) ,F15B 11/16 (2006.01) ,F15B 11/17 (2006.01) ,F15B 13/02 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
5
Power-assisted or power-driven steering
06
fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
07
Supply of pressurised fluid for steering also supplying other consumers
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
9
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20
Drives; Control devices
22
Hydraulic or pneumatic drives
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
16
with two or more servomotors
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
16
with two or more servomotors
17
using two or more pumps
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13
Details of servomotor systems
02
Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Applicants: VIGHOLM, Bo[SE/SE]; SE (UsOnly)
VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB[SE/SE]; S-631 85 Eskilstuna, SE (AllExceptUS)
Inventors: VIGHOLM, Bo; SE
Agent: FRÖHLING, Werner; Volvo Technology Corporation Corporate Patents, 06820, M1.7 S-405 08 Göteborg, SE
Priority Data:
0401938-628.07.2004SE
Title (EN) HYDRAULIC SYSTEM AND WORK MACHINE COMPRISING SUCH A SYSTEM
(FR) SYSTEME HYDRAULIQUE ET MACHINE DE TRAVAIL COMPRENANT UN TEL SYSTEME
Abstract:
(EN) A hydraulic system, comprising a first pump (1) that delivers hydraulic fluid to a first load outlet point (3) and to a second load outlet point (4), a second pump (2) that delivers hydraulic fluid to the second load outlet point (4), but not to the first load outlet point (3), means for detecting the load pressure at the first load outlet point and means for detecting the load pressure at the second load outlet point. The system comprises, in addition, means (27) for controlling the first pump on the basis of the detected load pressure at the first load outlet point (3) and the detected load pressure at the second load outlet point (4),and means (28) for controlling the second pump on the basis of the detected load pressure at the second load outlet point (4) but not on the basis of the detected load pressure at the first load outlet point (3).
(FR) L'invention concerne un système hydraulique comprenant une première pompe (1) distribuant un fluide hydraulique à un premier point de sortie de charge (3) et à un second point de sortie de charge (4), une seconde pompe (2) distribuant un fluide hydraulique au second point de sortie de charge (4), mais non au premier point de sortie de charge (3), des moyens de détection de la pression de la charge au premier point de sortie de charge, et des moyens de détection de la pression de charge au second point de sortie de charge. Le système comprend en outre, des moyens (27) de commande de la première pompe sur la base de la pression de charge détectée au premier point de sortie de charge (3), et de la pression de charge détectée au second point de sortie de charge (4), et des moyens (28) de commande de la seconde pompe sur la base de la pression de charge détectée au second point de sortie de charge (4), mais non sur la base de la pression de charge détectée au premier point de sortie de charge (3).
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Swedish (SV)