GB2003100A - Vehicle hydraulic systems - Google Patents
Vehicle hydraulic systemsInfo
- Publication number
- GB2003100A GB2003100A GB7834139A GB7834139A GB2003100A GB 2003100 A GB2003100 A GB 2003100A GB 7834139 A GB7834139 A GB 7834139A GB 7834139 A GB7834139 A GB 7834139A GB 2003100 A GB2003100 A GB 2003100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- circuit
- pressure
- valve
- dependence
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Fluid-Pressure Circuits (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
A fluid-flow control system comprises a control circuit 4 and a power circuit 5 for supplying fluid to a motor 1 (for example a steering cylinder). Control valves 20, 22, 35, 37 are arranged in the supply and return sides of each circuit, each valve being controlled in dependence on the pressure drop across it. A regulating valve 23 is operative to ensure that the pressure of fluid in the supply side of the power circuit bears a controlled relationship to the pressure of fluid in the supply side of the control circuit. The excess pressure fluid which is usually diverted to tank when the pressure regulating valve is in its neutral condition is utilized by providing an auxiliary circuit 8 and a priority valve 49 which controls fluid flow to that circuit and to the other two circuits in dependence on a pressure drop at an orifice 18 in the control circuit. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2738463A DE2738463C2 (en) | 1977-08-26 | 1977-08-26 | Hydraulic control device for a preferred first servomotor used for vehicle steering and at least one second servomotor |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2003100A true GB2003100A (en) | 1979-03-07 |
GB2003100B GB2003100B (en) | 1982-03-24 |
Family
ID=6017340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7834139A Expired GB2003100B (en) | 1977-08-26 | 1978-08-22 | Fluid-flow control system especially a steering system |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5928764B2 (en) |
DD (1) | DD138297A5 (en) |
DE (1) | DE2738463C2 (en) |
DK (1) | DK145986C (en) |
FR (1) | FR2401343A1 (en) |
GB (1) | GB2003100B (en) |
IT (1) | IT7868984A0 (en) |
SE (1) | SE7808941L (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2932847C2 (en) * | 1979-08-14 | 1982-05-13 | Danfoss A/S, 6430 Nordborg | Hydraulic control device for a servomotor, in particular for vehicle steering |
JPS5649547A (en) * | 1979-09-28 | 1981-05-06 | Hitachi Ltd | Manufacture of semiconductor device |
JPS58148440A (en) * | 1982-02-27 | 1983-09-03 | Toshiba Chem Corp | Plastic ic chip package |
CS235845B1 (en) * | 1983-04-27 | 1985-05-15 | Bohumil Polacek | Hydraulic two-stage control device for a servomotor |
DE3428403A1 (en) * | 1983-08-01 | 1985-04-11 | Závody těžkého strojírenství Výzkumný ústav stavebních a zemních stroju, Brünn/Brno | Two stage, pressure-compensated hydraulic control device for at least two consuming units |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3653209A (en) * | 1970-08-31 | 1972-04-04 | Bendix Corp | Vehicle hydraulic system |
US3834278A (en) * | 1972-12-15 | 1974-09-10 | Trw Inc | Power steering system with auxiliary power capability |
DE2305798C3 (en) * | 1973-02-07 | 1975-09-18 | Danfoss A/S, Nordborg (Daenemark) | Hydraulic control device for a servomotor, in particular for vehicle steering |
US3979907A (en) * | 1973-09-10 | 1976-09-14 | Parker-Hannifin Corporation | Priority control valve |
US4043419A (en) * | 1976-06-04 | 1977-08-23 | Eaton Corporation | Load sensing power steering system |
-
1977
- 1977-08-26 DE DE2738463A patent/DE2738463C2/en not_active Expired
-
1978
- 1978-01-20 JP JP53005126A patent/JPS5928764B2/en not_active Expired
- 1978-08-17 DK DK362778A patent/DK145986C/en not_active IP Right Cessation
- 1978-08-18 FR FR7824169A patent/FR2401343A1/en active Granted
- 1978-08-22 GB GB7834139A patent/GB2003100B/en not_active Expired
- 1978-08-23 DD DD78207437A patent/DD138297A5/en unknown
- 1978-08-24 SE SE7808941A patent/SE7808941L/en unknown
- 1978-08-25 IT IT7868984A patent/IT7868984A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
IT7868984A0 (en) | 1978-08-25 |
DK145986B (en) | 1983-05-09 |
GB2003100B (en) | 1982-03-24 |
SE7808941L (en) | 1979-02-27 |
DK362778A (en) | 1979-02-27 |
FR2401343A1 (en) | 1979-03-23 |
DE2738463A1 (en) | 1979-03-08 |
DK145986C (en) | 1983-10-10 |
FR2401343B1 (en) | 1983-07-22 |
JPS5436454A (en) | 1979-03-17 |
DE2738463C2 (en) | 1982-05-13 |
DD138297A5 (en) | 1979-10-24 |
JPS5928764B2 (en) | 1984-07-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1532607A (en) | Fluid control system for multiple circuited work elements | |
GB1508098A (en) | Controlled priority fluid system | |
ZA846227B (en) | A closed-center,load sensing hydraulic system | |
ES8205162A1 (en) | Hydraulic distributor with reaction on the control organ. | |
MX162133A (en) | IMPROVEMENTS TO AN OPEN CENTER HYDRAULIC SYSTEM FOR EXAMPLE FOR THE MANAGEMENT OF INDUSTRIAL AND AGRICULTURAL VEHICLES | |
SE8106632L (en) | HYDRAULIC CONTROL SYSTEM | |
GB919714A (en) | Hydraulic control system for a fluid actuated motor | |
ES8205163A1 (en) | Hydraulic distributor for a servomotor with return towards rest position. | |
SE9803914D0 (en) | Positive flow control system | |
ES421468A1 (en) | Power steering system with auxiliary power capability | |
GB2003101A (en) | Vehicle hydraulic systems | |
JPS5733235A (en) | Brake device | |
GB2003100A (en) | Vehicle hydraulic systems | |
SE7700317L (en) | CONTROL DEVICE FOR ATMINSTONE TVA FROM A PRINTING MEDICAL CELL FEED HYDRAULIC CONSUMERS | |
EP0404946A4 (en) | Hydraulic circuit device of construction vehicle | |
ES290520A1 (en) | Power operating and control system for tractors | |
GB2000092A (en) | A fluid-flow control system, especially a steering system | |
ATE27640T1 (en) | HYDRAULIC CONTROL SYSTEM FOR STEERING AND WORKING HYDRAULICS ON VEHICLES. | |
FR2378659A1 (en) | Pressure control for multi-circuit hydraulic brake system - has line direct to pump when pressure falls through vapour bubbles formation | |
JPS57127103A (en) | Pressure fluid circuit | |
US4488401A (en) | Hydraulic servo steering for vehicles | |
GB1406090A (en) | Flow control means for hydraulic systems | |
JPS54156985A (en) | Safety device of hydraulic circuit having a plurality of actuators | |
FR2438779A1 (en) | Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking | |
FR2359018A1 (en) | Hydrostatic auxiliary power steering system - has control valve positioned between channels passing from steering wheel driven hand pump to cylinder |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |