DK200800806A - A control system for controlling a flow of a fluid from a power source - Google Patents
A control system for controlling a flow of a fluid from a power source Download PDFInfo
- Publication number
- DK200800806A DK200800806A DKPA200800806A DKPA200800806A DK200800806A DK 200800806 A DK200800806 A DK 200800806A DK PA200800806 A DKPA200800806 A DK PA200800806A DK PA200800806 A DKPA200800806 A DK PA200800806A DK 200800806 A DK200800806 A DK 200800806A
- Authority
- DK
- Denmark
- Prior art keywords
- flow rate
- auxiliary
- steering
- actuator
- necessary
- Prior art date
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
- B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
Claims (16)
1. An electronic control system (10) for a mobile machine, the control system being adapted to allocate a necessary flow rate of a hydraulic fluid to a steering actuator (1) based on a steering command, characterized in that the control system is further adapted to allocate an auxiliary flow rate of the hydraulic fluid to at least one auxiliary actuator (2, 3), the allocation of the auxiliary flow rate being based on an auxiliary control command, a limit flow rate, and the necessary flow rate to the steering actuator (1).
2. A system according to claim 1, wherein the allocation of the auxiliary flow rate is based on a calculation including data representing the auxiliary control command, the limit flow rate, and the necessary flow rate to the steering actuator.
3. A system according to claim 1 or 2, wherein the limit flow rate is determined based on an available flow rate from a hydraulic pump (6).
4. A system according to claim 3, further adapted to determine the available flow rate by communication with the pump (6) or with at least one sensor.
5. A system according to any of the preceding claims, adapted to determine from the auxiliary control command, a demanded flow rate to the at least one auxiliary actuator, and wherein the auxiliary flow rate is defined as a percentage of the demanded flow rate if the sum of the demanded flow rate and the necessary flow rate exceeds the limit.
6. A system according to any of the preceding claims, wherein the limit is defined as a variable percentage of the available flow rate, the variable percentage depending on operational conditions of the mobile machine.
7. A system according to claim 6, wherein the operational conditions relate to a driving speed of the mobile machine.
8. A system according to any of the preceding claims, adapted, based on a specification, to share the auxiliary flow rate between a plurality of auxiliary actuators (2, 3).
9. A system according to any of the preceding claims, further comprising a steering system (4) adapted to provide the steering command in the form of a mechanical input from a hydraulic control handle (5).
10. A system according to any of the preceding claims, adapted to switch between different pumps.
11. A system according to any of the preceding claims, wherein the auxiliary control command is an electronic signal indicating a desired operation.
12. A system according to any of the preceding claims, adapted to determine if the pump is overloaded, and in that case to reduce the necessary flow rate.
13. A system according to any of the preceding claims, further comprising a pump capable of providing a variable fluid rate, the system being adapted to control the pump based on the auxiliary control command and the necessary flow rate to the steering actuator.
14. A system according to any of the preceding claims, comprising electronically controlled proportional valves for controlling a share of the auxiliary flow rate to each auxiliary actuator.
15. A system according to any of the preceding claims, wherein the necessary flow rate and auxiliary flow rates are determined frequently.
16. A mobile machine comprising a control system according to any of the preceding claims.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200800806A DK200800806A (en) | 2008-06-11 | 2008-06-11 | A control system for controlling a flow of a fluid from a power source |
| PCT/DK2009/000140 WO2009149712A1 (en) | 2008-06-11 | 2009-06-09 | A control system for controlling a flow of a fluid from a power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200800806A DK200800806A (en) | 2008-06-11 | 2008-06-11 | A control system for controlling a flow of a fluid from a power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK200800806A true DK200800806A (en) | 2009-12-12 |
Family
ID=40941690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA200800806A DK200800806A (en) | 2008-06-11 | 2008-06-11 | A control system for controlling a flow of a fluid from a power source |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK200800806A (en) |
| WO (1) | WO2009149712A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6134263B2 (en) * | 2013-12-27 | 2017-05-24 | 株式会社Kcm | Hydraulic drive system |
| GB2591725B (en) * | 2019-11-26 | 2024-04-24 | Bamford Excavators Ltd | Hydraulic system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2733315C3 (en) * | 1977-07-23 | 1985-06-20 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Dual-circuit steering system |
| DE19742187A1 (en) * | 1997-09-24 | 1999-03-25 | Linde Ag | Hydrostatic drive system for vehicle |
| US6321535B2 (en) * | 1997-11-21 | 2001-11-27 | Komatsu Ltd. | Hydraulic circuit for working vehicle |
| DE202004010530U1 (en) * | 2004-07-06 | 2004-12-09 | Deere & Company, Moline | Hydraulic circuit with priority valve for vehicle has at least one further priority valve with which priority of only one load is regulated and that also has pressure adaptation function |
| US7434653B2 (en) * | 2005-03-31 | 2008-10-14 | Caterpillar Inc. | On-demand electro-hydraulic steering system |
| EP1724233B1 (en) * | 2005-05-17 | 2009-01-14 | Nissan Motor Co., Ltd. | Hydraulic pressure supply control for an industrial vehicle |
| GB0603991D0 (en) * | 2006-02-28 | 2006-04-05 | Agco Gmbh | Hydraulic systems for utility vehicles, in particular agricultural vehicles |
-
2008
- 2008-06-11 DK DKPA200800806A patent/DK200800806A/en not_active Application Discontinuation
-
2009
- 2009-06-09 WO PCT/DK2009/000140 patent/WO2009149712A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009149712A1 (en) | 2009-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHS | Application shelved for other reasons than non-payment |