EP3134630A1 - Vanne de circulation de fluide - Google Patents
Vanne de circulation de fluideInfo
- Publication number
- EP3134630A1 EP3134630A1 EP15725783.3A EP15725783A EP3134630A1 EP 3134630 A1 EP3134630 A1 EP 3134630A1 EP 15725783 A EP15725783 A EP 15725783A EP 3134630 A1 EP3134630 A1 EP 3134630A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- valve
- actuator
- positioning means
- valve according
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 15
- 230000007423 decrease Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/72—Housings
Definitions
- the present invention relates to the field of fluid circulation valves, and more specifically a fluid circulation valve for a motor vehicle comprising an actuator with return spring.
- the valve according to the invention is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether they are gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
- actuators and for example actuators of fluid circulation valves, operating in a reversible kinematics.
- These actuators or control shafts use as a return element in their equilibrium position a torsion spring connected to a toothed sector or to a gear wheel.
- This spring comprises a fixed portion, which abuts in a slot or a stud, and a movable portion connected to the toothed sector or the toothed wheel.
- actuators or control shafts are arranged in a complex environment or restricted space, and for example in the body of a valve of a motor vehicle as described in the application FR2992046.
- the present invention proposes a fluid circulation valve comprising a body having a fluid passage duct, a shutter shutter of the duct, an actuator of the flap, the actuator being free to rotate and comprising a torsion spring, and a member for rotating the actuator, the valve comprising spring positioning means.
- the invention thus has the advantage of allowing the spring to be guided to a functional position in which the first end of the spring, and thus the spring, also allows optimum operation of the valve.
- the positioning means are formed by a ramp for guiding a first end of the spring to its functional position.
- the ramp is formed by a slide or groove.
- the positioning means of the first end of the spring are dug in the foundry of the body of the valve.
- the positioning means of the first end of the spring are adapted to the size of the first end of the spring.
- the positioning means of the first end of the spring open at a radial stop stop of the first end of the spring.
- the positioning means of the first end of the spring are arranged all around the spring.
- the width of the positioning means of the first end of the spring gradually decreases to the radial stop stop.
- the invention also relates to a motor vehicle comprising a valve according to the invention.
- FIG. 1 is a view in axial section of an exemplary embodiment of a fluid circulation valve according to the invention
- FIG. 2 is a perspective view of the actuator of the valve according to the invention
- FIG. 3 is a view of part of the valve according to the invention.
- FIG. 4 is a view of the positioning means of the spring of the valve according to the invention.
- the invention relates to a valve with an actuator comprising means for positioning a spring.
- the actuator is also called the control shaft.
- the actuator is a fluid circulation valve actuator, in particular for a motor vehicle. More specifically, the valve is a valve for adjusting the intake gas flow rate of a heat engine, and in particular a metering valve for a diesel engine.
- the actuator is, for example, metal, especially stainless steel.
- the valve is a valve well known to those skilled in the art and is for example such as that described in the patent application FR2992046.
- the valve comprises a body 2 inside which is formed a conduit 3 for circulating the fluid.
- the body 2 is here intended to be mounted, by means of connections, on an engine intake line so that the portion of the gases flowing in this branch passes through the duct and is directed towards the engine to participate in the engine. combustion.
- the connections and the intake line have not been shown, being well known in themselves.
- the actuator 4 free in rotation with, integral with it, a flap 5 for closing the duct 3 according to the angular position of the actuator 4, as illustrated by the arrow 20 rotating around the longitudinal axis A of the actuator 4.
- the actuator 4 is connected in rotation to the shutter 5 by fasteners 14, here for example a screw-nut system, or others, which allows the shutter to be able to rotate with the tree between two extreme positions.
- fasteners 14 here for example a screw-nut system, or others, which allows the shutter to be able to rotate with the tree between two extreme positions.
- One of the fully open positions, as in FIG. 1, lets the fluid pass, and the other, not shown, blocks its passage, the shutter then being applied against the lateral wall of the duct 3.
- the valve comprises connecting means 6, 7 pivot between said body 2 and the actuator 4.
- the actuator 4 can thus pivot freely about the axis A, by a sliding adjustment provided between the shaft and the connecting means.
- the end of the actuator, described as upper 12 opens outwardly of the body 2 of the valve 1 to be connected to a drive member 21 in rotation of said control shaft 4.
- the driving member 21 is, for example, a toothed sector 22 comprising a central portion 24 centered on the actuator 4 and a radial protuberance 26, forming a corner sector slightly greater than the angular clearance of the flap and provided with gear teeth 28.
- toothed sector 22 is here rotatably connected to a return wheel 30 free in rotation with respect to the body 2 about an axis of articulation 32 parallel to the longitudinal axis A of the control shaft 4.
- the valve comprises an electric motor, not shown, in particular a stepping motor.
- the electric motor meshes with a large pinion 36 of the idler wheel 30 while the toothed sector 22 meshes with a small pinion 37 of the latter.
- the actuation of the motor thus causes a rotation of the return wheel 30 which in turn causes rotation of the toothed sector 22 and therefore of the flap 5 via the control shaft 4.
- the drive member 21, the intermediate wheel 30 and / or said motor are positioned in a housing 38 of the valve closed by a cover 40.
- the valve comprises at least one torsion spring 42 for positioning the flap 5 in a rest position, here an open position. By position of rest, one hears a position taken when the motor of the valve is not actuated.
- a first end 421 of the spring 42 bears on the body 2, and a second end 422 of the spring bears on the drive member 21, at the level of a slot 46 illustrated in FIG.
- the spring 42 is centered, in particular, on the longitudinal axis A.
- the slot 46 thus accommodates the second end 422 of the spring 42, illustrated in FIG. 1.
- the slot 46 passes axially through the wall 50 of the drive member 21.
- the slot 46 is oriented, for example, along a corner sector, centered on the longitudinal axis A of the actuator 4.
- the slot 46 thus defines an attachment position of the spring 42.
- the first end 421 of the spring 42 is thus supported on the body 2 of the valve.
- This first end 421 is also called fixed end in opposition to the second end 422 which is driven by the drive member 21. Indeed, this first end 421 of the spring 42 is not rotated by the body member. 21 training.
- this stop means 423 is a stop, and for example a stud, against which the first end 421 of the spring 42 abuts.
- this stop means 423 is a slot, not shown, in which the first end 421 of the spring 42 is inserted.
- the valve according to the invention comprises positioning means 424 of the spring illustrated in FIG. 4.
- these means 424 make it possible to guide the first end 421 of the spring 42 to its functional position.
- functional position is meant the position in which the first end 421 of the spring 42, and therefore the spring 42 also, the operation of the valve is optimum.
- the correct positioning of the spring is important to ensure the correct tare angle and therefore the good restoring torque of the kinematics of the actuator. Incorrect positioning therefore influences the booster torque which is not as effective as it should be.
- the spring 42 plays its role near the drive member 21 by returning it to its rest position.
- the positioning means 424 are formed by a ramp dug in the casting of the body 2 of the valve. More specifically, this ramp is formed by a slide or groove.
- the shape of the ramp 424 is adapted to the size of the first end
- the ramp 424 and allows the first end 421 of the spring to slide or slide to the stop which will stop it.
- Ramp 424 guides the spring to the stop.
- the ramp 424 thus opens at the stop stop.
- the ramp 424 is arranged all around the spring 42.
- the width of the ramp 424 gradually decreases to the stop stop.
- the valve comprises a sensor target 66. It is, for example, a flat magnet described in the application FR2992046.
- Such a valve is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1453603A FR3020110B1 (fr) | 2014-04-22 | 2014-04-22 | Vanne de circulation de fluide |
PCT/FR2015/051094 WO2015162380A1 (fr) | 2014-04-22 | 2015-04-22 | Vanne de circulation de fluide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3134630A1 true EP3134630A1 (fr) | 2017-03-01 |
EP3134630B1 EP3134630B1 (fr) | 2022-11-23 |
Family
ID=50933406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15725783.3A Active EP3134630B1 (fr) | 2014-04-22 | 2015-04-22 | Vanne de circulation de fluide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3134630B1 (fr) |
CN (1) | CN106460680B (fr) |
FR (1) | FR3020110B1 (fr) |
WO (1) | WO2015162380A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1241693B (it) * | 1990-09-28 | 1994-01-31 | Weber Srl | Dispositivo di alimentazione, in particolare per motori endotermici |
US6364287B1 (en) * | 2000-08-07 | 2002-04-02 | Visteon Global Technologies, Inc. | Electronic throttle return spring assembly |
US7628250B2 (en) * | 2007-11-21 | 2009-12-08 | Emcon Technologies Llc | Passive valve assembly for vehicle exhaust system |
FR2979407B1 (fr) * | 2011-08-25 | 2014-09-12 | Valeo Systemes De Controle Moteur | Vanne de circulation de fluide a blocage axial de l'arbre de commande rotatif de l'obturateur |
FR2992046B1 (fr) * | 2012-06-15 | 2015-05-01 | Valeo Sys Controle Moteur Sas | Vanne de circulation de fluide, notamment pour vehicule automobile |
-
2014
- 2014-04-22 FR FR1453603A patent/FR3020110B1/fr active Active
-
2015
- 2015-04-22 EP EP15725783.3A patent/EP3134630B1/fr active Active
- 2015-04-22 CN CN201580032961.3A patent/CN106460680B/zh active Active
- 2015-04-22 WO PCT/FR2015/051094 patent/WO2015162380A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN106460680B (zh) | 2020-11-03 |
EP3134630B1 (fr) | 2022-11-23 |
WO2015162380A1 (fr) | 2015-10-29 |
CN106460680A (zh) | 2017-02-22 |
FR3020110B1 (fr) | 2017-08-18 |
FR3020110A1 (fr) | 2015-10-23 |
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