WO2003000534A2 - Procede et dispositif de repartition d'un flux d'entree entre un flux de sortie prioritaire et un flux de sortie secondaire - Google Patents
Procede et dispositif de repartition d'un flux d'entree entre un flux de sortie prioritaire et un flux de sortie secondaire Download PDFInfo
- Publication number
- WO2003000534A2 WO2003000534A2 PCT/FR2002/002057 FR0202057W WO03000534A2 WO 2003000534 A2 WO2003000534 A2 WO 2003000534A2 FR 0202057 W FR0202057 W FR 0202057W WO 03000534 A2 WO03000534 A2 WO 03000534A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow
- priority
- value
- operating characteristic
- restrictor
- 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.)
- Ceased
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
- B62D5/062—Details, component parts
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/022—Flow-dividers; Priority valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
- F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/633—Electronic controllers using input signals representing a state of the prime mover, e.g. torque or rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6654—Flow rate control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
Definitions
- the invention relates to the technical field of the distribution and regulation of the flow rate of a fluid flow, coming from a source of pressurized fluid, and intended for means of transformation of the energy transported by the fluid. under pressure, in mechanical movements.
- the invention relates more particularly to the field of systems for distributing or dividing a flow of fluid called input into two flows of fluid, called output, a first output flow of which has priority over the second output flow which is then said to be secondary.
- a device is for example used to supply, from a source of pressurized fluid comprising a fixed displacement hydraulic pump driven by an internal combustion engine, various receivers, of a handling vehicle, such as for example the steering assistance device and actuators for handling equipment.
- the vehicle steering assistance function can be considered to have priority over the handling functions.
- a distribution device otherwise called a "priority divider" which distributes the input flow from the source of fluid so that, when the input flow is less than a threshold value, direct all the input flow to the priority flow, the secondary flow then having a zero flow.
- the priority divider maintains the flow of the priority flow at a constant value equal to the threshold value and directs the additional flow of the input flow to the secondary flow.
- the priority divider used to ensure this distribution, is generally a fully hydraulic regulation device which comprises, on the one hand, an inlet pipe and, on the other hand, a priority outlet pipe and a secondary outlet pipe.
- the distribution means are, most often, constituted by a mobile distribution drawer between a rest position and an extension position.
- the distribution slide is then adapted to, in the rest position, ensure communication between the inlet pipe and the priority outlet pipe, and, between the rest position and the extension position, ensure a in variable section communication, depending on the position of the slide, of the inlet pipe with the priority and secondary outlet pipes.
- the distribution means further comprise an elastic return member of the distribution drawer in the rest position as well as a control chamber of the drawer in extension and a return chamber of the drawer in the rest position.
- the priority divider also comprises means for controlling the distribution means which comprise, on the one hand, a control throttle placed on the priority output pipe.
- the control means further comprise a return control channel connecting the return chamber to the priority outlet pipe downstream of the control throttle and an extension control channel connecting the control chamber in extension to the priority outlet line upstream of the choke.
- the position of the distribution slide is a function of the pressure difference existing at the terminals of the control throttle, a pressure difference which is itself a function of the flow rate passing through the choke.
- the divider return member is then designed so that, as long as the pressure difference across the control throttle is less than the value corresponding to the threshold flow rate, the distribution slide remains in the rest position.
- the pressure difference is greater than the calibration of the return member, the distributor slide moves under the effect of the pressure prevailing in the control chamber in extension which is higher than that prevailing in the recall control chamber.
- the displacement of the distribution slide then causes a distribution of the inlet flow between the priority outlet pipe and the secondary outlet pipe, so that the flow rate of the priority outlet flow maintains a constant value equal to the threshold value and the flow rate of the secondary flow is substantially equal to the difference between the flow of the input flow and the flow of the priority flow.
- a drawback of this device lies in the fact that it is not able to take into account different operating conditions of the source of pressurized fluid.
- the flow threshold value generally corresponds to the flow of the fixed pump when the engine is idling and therefore provides power available which could be described as minimal.
- the priority distribution device or divider induces a loss of energy at the level of the priority flow.
- the need therefore appears to have a new method for distributing an inlet fluid stream into two outlet fluid streams, an outlet stream of which has priority over the second secondary outlet stream which can take into account different phases of the operation of a source of pressurized fluid supplying the input flow and which makes it possible to reduce the losses at the level of the priority flow.
- the invention therefore relates to a method for distributing an inlet fluid stream from a source of pressurized fluid, into two outlet fluid streams, a first outlet stream of which is has priority over the second so-called secondary output stream.
- the first method is characterized in that it consists in particular in:
- the invention also relates to a distribution device intended for implementing the distribution method according to the invention.
- the invention also relates to a device for distributing an inlet fluid stream, coming from a source of pressurized fluid, into at least two outlet fluid streams, a first outlet stream of which has priority over compared to the second so-called secondary output stream, which includes:
- FIG. 1 schematically illustrates a first embodiment of a distribution device involving fully hydraulic or pneumatic regulation of its operation.
- FIG. 2 illustrates an embodiment of a constituent element of the device according to FIG. 1.
- FIG. 3 illustrates the relationship between the flow of the input flow and the flow of the priority flow in a preferred embodiment of the device according to FIG. 1.
- FIG. 4 illustrates another embodiment of a distribution device according to the invention involving mixed hydraulic and electromagnetic regulation.
- a distribution device according to the invention, designated together by the reference 1 in Figure 1, is intended to ensure distribution of a flow of fluid E from a source of pressurized fluid 2 into two flows of fluid S1 and S2 each intended to supply one or more user receivers 3 and 4 respectively.
- the flow from the source of fluid under pressure 2 can be qualified, with respect to the distribution device 1, as an input flow, while the flows S1 and S2, intended to supply the receivers 3 and 4, can be qualified as an output flow always with respect to the distribution 1.
- the device 1 comprises an inlet pipe 10 intended to channel the inlet flow E and two outlet pipes 11 and 12 intended to channel the outlet flows S1 and S2.
- the output line 11 is intended to supply power to the receiver 3 corresponding to an essential function of the installation or of the vehicle, not shown, implementing the distribution device 1, so that the output stream S1 can be considered as priority by compared to the output flow S2 intended to supply other functions 4 of the installation or of the vehicle which are of less importance than the function provided by the user receiver 3.
- the output line 11 can therefore be qualified as priority while the second outlet line 12 can be described as secondary.
- the device 1 further comprises distribution means 13 which ensure communication, of variable section, of the inlet pipe 10 with, on the one hand, the priority outlet pipe 11 and, on the other hand, the secondary pipe 12.
- the distribution means 13 comprise a distribution slide or three-way compensating piston 14 movable between a rest position, as illustrated in FIG. 1, and an extension position, not shown.
- the distributor 14 puts in direct communication the inlet pipe 10 and the priority outlet pipe 11, while closing the secondary outlet pipe 12.
- the drawer 14 puts in communication the inlet pipe 10 with both the priority pipe 11 and the secondary pipe 12.
- the distribution slide 14 provides communication, of section variable, depending on the position of the drawer, of the inlet line 10 with the lines 11 and secondary 12 priority output, to ensure modulation of the flows of the priority S1 and secondary S2 flows.
- the distribution slide 14 is subjected to the action of an elastic member 15 for returning to the rest position which guarantees that the inlet flow will be directed towards the priority outlet pipe 11 when the device 1 is pressurized.
- the distribution means 13 further comprise a chamber 16 for returning to the rest position, which is in relation to the distribution drawer 14.
- the distribution means 13 also include an extension control chamber 17 which is also in relation to the distribution slide 14.
- the distribution device 1 comprises means 20 for controlling the distribution means 13.
- the control means 20 comprise a control throttle 21 which is placed on the priority outlet pipe 11 downstream of the distribution slide 14.
- the control means 20 further comprise a return control channel 22 which connect the return chamber 16 to the priority outlet pipe 11 downstream of the control throttle 21.
- the control means also include a second channel 23, of extension control, which connects the extension control chamber 17 to the priority output line 11 upstream of the control throttle 21.
- the control throttle 21 has a passage section or a variable throttle and the distribution device 1 comprises control means 25 which act on the passage section of the control throttle 20.
- the variation of the section of the control throttle 21 is ensured by a mobile restrictor and the control means 25 are intended to act on the position of the mobile restrictor.
- FIG. 2 illustrates an embodiment of a distribution device which integrates both the distribution means 13 as well as the control means 20 comprising the choke 21 with variable section.
- the choke 21 has, as a movable restrictor, a piston 26, movable between a start of travel corresponding to a maximum opening position as shown in FIG. 2 and an end of travel corresponding to a minimum open position.
- the restrictor 26 is preferably subjected to the action of an elastic return member 27 at the start of the race or maximum opening position as shown in FIG. 1.
- the throttle 21 comprises a chamber 28 for controlling the restrictor 26 in return and, according to the example illustrated, in opening.
- the throttle valve 21 also includes a chamber 29 for controlling the restrictor 26 in positive displacement, here corresponding to a closing movement of the mobile restrictor 26.
- control means 25 comprise a control throttle 30 which is placed on the inlet pipe 10 upstream of the distribution slide 14.
- the control means also comprise a channel 31 of piloting in return of the mobile restrictor 26 which connects the piloting chamber in return 28 to the inlet pipe 10 downstream of the piloting throttle 30, with respect to the direction of circulation of the inlet flow E.
- the steering means further comprise a positive displacement piloting channel 32 which connects the positive displacement piloting chamber 29 to the inlet pipe 10, upstream of the piloting throttle 30.
- the position of the dispensing slide 14 is a function of the difference ⁇ PP between the pressure PP1 upstream of the choke 21 and the pressure PP2 downstream of the choke 21 on the priority output pipe 10. It should be noted that, taking into account the laws of fluid mechanics, the difference ⁇ PP is a function of the flow rate of the priority flow and of the section of the throttle of the throttle 21.
- the position of the restrictor 26 of the control throttle 21 depends on the pressure difference ⁇ PE between the pressure PE1, upstream of the pilot choke 30, and the pressure PE2 downstream of the pilot choke 30 on the inlet pipe 10.
- the pressure PE2 is applied to the mobile restrictor 26 at the opening piloting chamber 28 via the pilot channel 31 while the pressure PE1 is applied to the mobile restrictor 26 at the chamber for closing control 29 via the control channel 32.
- the value of the difference ⁇ PE is a function of the flow rate of the input fluid and of the section of the throttle of the pilot throttle 30.
- the difference ⁇ PE is a function direct flow QE of the input flow E, so that the position of the mobile restrictor 26 is itself a function of the input flow E.
- the device 1, as described, operates in the following manner.
- the distribution slide 14 is placed so that the input flow E is fully directed towards the priority output pipe 11.
- the priority output flow S1 then has a flow Q1 equal to the flow QE of the input flow E.
- the mobile restrictor 26 is in the maximum open position.
- the distribution device 1 remains in this state until the input flow QE, and therefore the priority flow Q1, reaches a threshold value V1 from which the control throttle 21 is saturated.
- the return member 15 is then designed so that the pressure difference ⁇ PP is sufficient to oppose the force of the elastic return member 15 and move the distribution slide 14 in the direction of a distribution of the flow d inlet E between the priority outlet pipe 11 and the secondary outlet pipe 12. From this stage, the flow rate of the secondary stream S2 increases.
- the input flow E generates, at the terminals of the piloting throttle 30, the pressure difference ⁇ PE which applies to the movable restrictor 26.
- the return member 27 is then chosen so that no movement of the restrictor 26 occurs as long as the flow rate QE of the input flow is less than the threshold value V1 and so that the displacement of the mobile restrictor 26 is carried out gradually from the threshold value V1.
- the variation in the cross section of the throttle of the throttle 21 is a linear function of the position of the mobile restrictor 26, so that as the flow rate QE increases input flow E, the mobile restrictor 26 moves in the direction of a linear reduction in the section of the throttle of the throttle 21, which induces a linear decrease in the flow Q1 of the priority flow S1 to a state corresponding to a nominal value V2 of the flow rate QE of the input stream.
- control throttle 21 is in a minimal opening situation, while the slide valve 14 distributes the input flow between the priority 11 and secondary 12 flows, so that the priority flow S1 has a constant flow C and the secondary flow S2 has a flow appreciably equivalent to the nearest losses, the difference between the flow rate QE of the input flow and the flow rate Q1 of the priority flow.
- FIG. 3 more particularly illustrates the relationship which exists between the flow rate QE of the input flow E and the flow rate Q1 of the priority flow S1 in the context of the device 1 as illustrated, operating as described above.
- the device 1 makes it possible to regulate and distribute the flow from the pressure source between a priority flow and a secondary flow, as a function of the flow rate of the pressure source and therefore indirectly of the speed of the drive motor of the fixed displacement pump.
- This particularly advantageous characteristic makes it possible to ensure that, during nominal operation of the pressure source, that is to say from a speed of the heat engine for which it delivers its nominal torque and therefore its power nominal, the priority receiver 3 receives only the fluid flow strictly necessary for its normal operation.
- FIG. 4 illustrates another embodiment of the device according to the invention, implementing mixed, hydraulic and electronic regulation.
- the mobile restrictor 26 is actuated by an electromagnetic device 40 which is connected to a control unit 41.
- the device further comprises a sensor 42 adapted for example on the drive shaft of the pump. the fluid source 2.
- the control unit 41 is then adapted to act on the position of the mobile throttle 26 as a function of the engine speed in order to obtain, for example, a variation curve of the flow rate Q1 of the priority flow S1 such as shown in Figure 3.
- control unit 41 could be adapted so as to obtain a variation in the flow rate of the priority flow which is not a linear function as illustrated and which could be of any other form, depending on the nature of the priority receiver or else source of pressurized fluid.
- the distribution device could be produced in the form of a one-piece assembly or, on the contrary, result from the assembly or the use of separate elements ensuring the different functions of the device. division.
- the invention is not limited to the examples described above because various modifications can be made thereto without departing from its scope.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Flow Control (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002324094A AU2002324094A1 (en) | 2001-06-22 | 2002-06-14 | Method and device for dividing an input flow into a priority output flow and a secondary output flow |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR01/08290 | 2001-06-22 | ||
| FR0108290A FR2826408A1 (fr) | 2001-06-22 | 2001-06-22 | Procede et dispositif de repartition d'un flux d'entree ent re un flux de sortie prioritaire et un flux de sortie second aire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003000534A2 true WO2003000534A2 (fr) | 2003-01-03 |
| WO2003000534A3 WO2003000534A3 (fr) | 2003-03-13 |
Family
ID=8864682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2002/002057 Ceased WO2003000534A2 (fr) | 2001-06-22 | 2002-06-14 | Procede et dispositif de repartition d'un flux d'entree entre un flux de sortie prioritaire et un flux de sortie secondaire |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002324094A1 (fr) |
| FR (1) | FR2826408A1 (fr) |
| WO (1) | WO2003000534A2 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2914748A1 (fr) * | 2013-07-08 | 2015-01-15 | Magna Powertrain Bad Homburg GmbH | Pompe a cylindree variable et commande de boite de vitesses |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192337A (en) * | 1978-08-07 | 1980-03-11 | The Cessna Aircraft Company | Priority flow valve |
| US4552168A (en) * | 1984-05-15 | 1985-11-12 | J. I. Case Company | Stabilizer for priority flow divider valve |
| US4738330A (en) * | 1985-03-22 | 1988-04-19 | Nippondenso Co., Ltd. | Hydraulic drive system for use with vehicle power steering pump |
| US5343392A (en) * | 1989-06-28 | 1994-08-30 | Jidosha Kiki Co., Ltd. | Method of diagnosing power steering system |
| JP2699595B2 (ja) * | 1989-12-15 | 1998-01-19 | 株式会社豊田自動織機製作所 | 産業車両の油圧装置 |
| DE4337816C2 (de) * | 1993-11-05 | 1996-12-05 | Fichtel & Sachs Ag | Hydrauliksystem für ein Kraftfahrzeug |
| US5782260A (en) * | 1995-12-04 | 1998-07-21 | Ford Global Technologies, Inc. | Hydraulic flow priority valve |
| JP3912905B2 (ja) * | 1998-07-10 | 2007-05-09 | 株式会社ショーワ | 油圧式パワーステアリング装置 |
| DE19908614C1 (de) * | 1999-02-27 | 2000-09-21 | Rexroth Hydraulik Parchim Gmbh | Prioritätsventil für einen hydraulischen Lenkkreislauf |
-
2001
- 2001-06-22 FR FR0108290A patent/FR2826408A1/fr active Pending
-
2002
- 2002-06-14 AU AU2002324094A patent/AU2002324094A1/en not_active Abandoned
- 2002-06-14 WO PCT/FR2002/002057 patent/WO2003000534A2/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| None |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2826408A1 (fr) | 2002-12-27 |
| WO2003000534A3 (fr) | 2003-03-13 |
| AU2002324094A1 (en) | 2003-01-08 |
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