EP3818254A1 - Device for controlling a camshaft phaser - Google Patents
Device for controlling a camshaft phaserInfo
- Publication number
- EP3818254A1 EP3818254A1 EP19732402.3A EP19732402A EP3818254A1 EP 3818254 A1 EP3818254 A1 EP 3818254A1 EP 19732402 A EP19732402 A EP 19732402A EP 3818254 A1 EP3818254 A1 EP 3818254A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- assembly
- drawer
- insert
- phase shifter
- 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.)
- Withdrawn
Links
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 21
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0708—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising means to avoid jamming of the slide or means to modify the flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/1401—Check valves with flexible valve members having a plurality of independent valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/16—Check valves with flexible valve members with tongue-shaped laminae
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/3443—Solenoid driven oil control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
- F01L2001/34453—Locking means between driving and driven members
- F01L2001/34463—Locking position intermediate between most retarded and most advanced positions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/101—Electromagnets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
Definitions
- the present invention relates to a control device for controlling the position of a variable camshaft phase shifter of an internal combustion engine.
- Camshaft phase shifters are used to control the angular relationship between the crankshaft pulley and the camshaft of an internal combustion engine.
- a camshaft phase shifter is used to offset the intake camshaft in order to widen the engine torque curve, increase the power at high variable speed and improve the quality of idle.
- the exhaust cam can be offset by a camshaft phase shifter to allow control of the exhaust gas recirculation like an internal EGR valve (acronym for "exhaust gas recirculation" which means recirculation exhaust) which significantly reduces pollutant emissions and also saves fuel.
- camshaft phase shifters are controlled by hydraulic systems that use lubricating oil pressurized by the oil pump.
- the camshaft phase shifter consists of a stator part connected to the crankshaft by means of a chain or belt and a rotor part fixed to the 'camshaft.
- One or more pairs of hydraulic chambers are arranged between the rotor and the stator constituting a rotary actuator.
- Each pair of hydraulic chambers consists of an advance chamber and a delay chamber.
- the first technology is to use the pressure difference between the pressurized oil from the oil pump and the engine drain pressure close to atmospheric pressure. So when the pressure in the advance chamber is greater than the pressure in the delay chamber, the rotor rotates in the advance direction and idem when the pressure in the delay chamber is greater than the pressure in the advance chamber, the rotor rotates in the delay direction.
- the direction of rotation is controlled by a 4-port three-position solenoid valve.
- the volume of oil used for the movement of the rotor is taken from the high pressure circuit and evacuated via a drain, which results in a consumption of hydraulic power.
- the second technology consists in using the torque oscillations which are exerted on the camshaft and which come from the compression forces of the valve springs. These oscillations are transferred to the rotor which generates a pressure difference on each pair of advance and delay chambers.
- Each pair of chambers is hydraulically connected by a channel comprising a valve allowing the circulation of oil in one direction. Rotation of the rotor takes place in one direction only. The direction of rotation advance or delay is selected by a
- solenoid valve with 5 ports and 3 positions.
- a valve is integrated into a valve solenoid assembly.
- the rotation is in the advance direction or in the delay direction.
- the volume of oil displaced during the movement of the rotor is transferred between the advance chamber and the delay chamber.
- An oil supply is required via the pressurized oil circuit from the oil pump.
- a second valve is used at the inlet of the solenoid control valve.
- the valves used today are of the ball or spring type and must have a permeability / bulk ratio compatible with
- the object of the invention is to solve at least one of the problems associated with known valves.
- the present invention solves the above-mentioned problems by proposing a device for controlling a camshaft phase shifter provided for locking or releasing a rotor from a camshaft phase shifter of an internal combustion engine.
- the control device includes a hydraulic element comprising a body, a drawer assembly having a drawer body, a seal and a valve assembly comprising a first valve, a second valve and a third valve.
- the control device further comprises an electromagnetic actuator connected to the drawer assembly of the hydraulic element which can move along a longitudinal axis between:
- the valve assembly comprises at least three valves integrated in a flexible monobloc piece.
- each valve comprises at least one pallet connected to two flexible arms and in that the valve is connected to two contiguous rigid rings.
- the valve assembly comprises a longitudinal bar and at least three valves integrated in a flexible monobloc piece.
- the valve comprises at least one pallet connected to a flexible arm extending along the longitudinal axis and the longitudinal bar connects the valve to the adjoining valve.
- the longitudinal bar connects two contiguous valves.
- Figure 1 is a perspective view of an engine with a control device according to the invention
- Figure 2 is a sectional view of an engine with the control device according to the invention
- FIG. 3 is a sectional view of the control device according to the invention.
- FIG. 4 is a perspective view of the control device according to the invention.
- Figure 5 is a perspective view of a valve assembly according to a first embodiment of the invention.
- Figure 6 is a perspective view of the valve assembly according to a second embodiment of the invention.
- FIG. 7 is a sectional view of the control device with the oil flows according to the invention.
- FIGS. 1 and 2 there is shown a motor 10, a control device 12 and a camshaft phase shifter 13.
- the control device 12 is arranged in a bore produced in the lower engine of the engine 10.
- the control device 12 comprises an electromagnetic actuator 14 and a hydraulic element 16.
- the electromagnetic actuator 14 controls the hydraulic element 16.
- the electromagnetic actuator 14 comprises a connector 18 a coil 20, a rod 22, a housing 24 and a fixing lug 26.
- the connector 18 is arranged at an end opposite to the hydraulic element 16, the hydraulic element 16 comprises a body 28, a drawer assembly 30, a gasket 32, a compression spring 40 and a washer 44.
- the drawer assembly 30 comprises a valve assembly 34, a drawer body 36, a drawer insert 38 and a stop ring 42.
- the slide assembly 30 is mounted in the body 28 and controls a flow of fluid between the advance and delay chambers of a camshaft phase shifter (not shown) to rotate the camshaft phase shifter in the advance or delay directions.
- FIG. 3 and 4 is shown the body 28 of the hydraulic element.
- the body 28 extends along a longitudinal and central X axis.
- the body 28 is of cylindrical shape.
- the body 28 includes a bore 29.
- the drawer assembly 30 delimits an internal chamber 45 where the recirculation pressure of the control screw 18 prevails.
- At least one opening which will be used later in the description defines a number of openings comprising at least one opening.
- FIG. 3 is shown the hydraulic element 16 comprising the body 28 having three ports 46,48,50 arranged radially which makes three ports.
- Port 46 is also called advance port 46.
- Port 48 is called delay port 48.
- Port 50 is called power port 50.
- the three ports 46, 48, 50 are provided with a filter 53.
- the power port 50 is provided with at least one opening connected to the pressurized oil circuit of the engine (not shown).
- the advance port 46 is provided with at least one opening connected to the advance chambers of the rotor of the camshaft phase shifter 13 (not shown).
- the port delay 48 is provided with at least one opening connected to the delay chambers of the rotor of the camshaft phase shifter 13 (not shown).
- the drawer body 36 comprising openings 54,56,58,60.
- the openings 54, 56, 58 are arranged radially all around the drawer body 36.
- the opening 54 is also called the feed opening 54.
- the opening 58 is also called the feed opening 58.
- the opening 56 is called also delay opening 56.
- the opening 60 is also called recirculation opening 60.
- the drawer body 36 comprises at least the advance opening 54, at least the delay opening 56, at least the opening
- the internal chamber 45 is arranged between the drawer insert 38 and the drawer body 36.
- the drawer assembly 30 is arranged inside a bore formed in the body 28 of the hydraulic element 16.
- the drawer assembly 30 extends along the longitudinal X axis.
- the oil supply openings 58 communicate with the supply port 50 regardless of the position of the drawer assembly 30 on the longitudinal X axis.
- the recirculation openings 60 communicate with the advance port 46 or the delay port 48 depending on the position of the drawer assembly 30 on the longitudinal X axis.
- the feed openings 54 may or may not communicate with the feed port 46 depending on the position of the drawer assembly 30 on the longitudinal X axis.
- the delay openings 48 may or may not communicate with the delay port 48 depending on the position of the drawer assembly 30 on the longitudinal X axis.
- FIG. 3 According to Figure 3 are shown the recirculation 60 and supply 58 openings of the drawer body.
- the recirculation 60 and supply 58 openings are elongated in a circumferential direction
- the recirculation 60 and supply 58 openings of the drawer body each have an oblong projected section.
- This oblong cross-section allows a larger flow surface than a circular opening for the same width along the axis X and therefore a greater flow of fluid through the advance 46, delay 48 and supply ports. 50.
- the recirculation openings 60 and the oil supply openings 58 are positioned opposite the vanes 62 of the valve assembly 34.
- the valve assembly 34 is arranged in a bore of the drawer body 36 so that an exterior surface of the valve assembly 34 is in contact with the interior surface of the drawer body 36.
- the valve assembly 34 is tubular, that is to say it has a cylindrical shape and it is open at both ends 66.
- the oil can flow through the internal volume of the valve assembly 34, l oil flow flowing in the direction of the longitudinal and central X axis.
- the thickness of the tube of the valve assembly 34 is very small compared to its diameter, that is to say of the order of 0.1% to 10%.
- the valve assembly 34 comprises at least three rigid rings 68 and at least a first valve 70, a second valve 71 and a third valve 73.
- Each valve 70, 71, 73 comprises at least one pallet 62 connected to two arms 72,74 flexible and each valve 70, 71, 73 is connected to two rigid rings 68 consecutive.
- the valve assembly 34 comprises at least one angular indexing element 76 produced by an internal or external notch. As shown in FIGS. 2, 3 and 4, the angular indexing element 76 does not allow the rotation of the valve assembly 34 inside the body 28 of the hydraulic element 16.
- the rigid rings 68 may include a or several openings of different shape to allow the circulation of oil inside the valve assembly34.
- the pallet 62 is elongated in the tangential direction of the tubular valve assembly.
- the shape of the pallet 62 defines an oblong shape complementary to the oblong section of the recirculation opening 58 and of the feed opening 60 of the drawer body.
- the pallet 62 has a larger area than the surface of the recirculation opening 60 and the feed opening 58 of the drawer body. The overlap of the two surfaces provides an oil seal necessary for the one-way valve function. All
- valve34 comprises several valves 70 arranged in one direction
- valve assembly 34 may include both valves 70,71,73 arranged in a circumferential manner and valves 70,71,73 arranged linearly along the longitudinal X axis.
- each pair of arms 72, 74 flexible extends towards the rear of the pallet 62 with sufficient spacing so that the next pallet in the circumferential direction is arranged between the pairs of arms 72, 74 flexible.
- the arrangement of the pallets 62 in the same circumferential direction makes it possible to increase the ratio
- the pallets 62 and the arms 72, 74 are integral with one another.
- the valve assembly 34 can be formed for example by cutting, for example with a laser, a cylindrical metal tube, such as steel, other variants of the embodiment of the valve assembly 34 described above are possible as for example from a metal sheet then cut by stamping or by laser or by chemical attack and then roll the metal sheet and finally weld the rolled metal sheet.
- each valve 70,71,73 is defined by the pair of arms 72, 74 with spring.
- the arms 72, 74 are also called first arm 72 and second arm 74.
- the spring arms 72, 74 diverge away from the pallet 62 of the valve 70.
- the first spring arm 72 extends to left in FIG. 4 towards a first end 66 while the second spring arm 74 extends to the right towards a second open end 67 of the valve assembly 34.
- the spring arms 72,74 are thin in width. Due to the slenderness of the arms, an opening 80 of the pallet is defined between the spring arms 72, 74 of the valve 70, 71, 73.
- control valve assembly 34 described in FIG. 6 is tubular, that is to say that it has a cylindrical shape and is open at both ends 80.
- the shape of the control valve assembly 34 is called origami form.
- the valve assembly 34 comprises at least at least three valves 70.
- Each valve 70 comprises at least one pallet 62 connected to a flexible arm 82 and a rigid element 86.
- the valve assembly 34 further comprises a longitudinal bar 84 extending the along the longitudinal and central X axis.
- the longitudinal bar 84 connects two contiguous valves 70,71,73.
- Two contiguous valves 70 are connected to each other by a longitudinal bar 84 extending along the axis X.
- the arm 82 is arranged longitudinally along the axis X.
- the longitudinal bar 84 is arranged between the two adjacent rigid elements 86. Bar longitudinal 84 serves to index the valve assembly 34.
- the pallet 62 is elongated in the tangential direction of the tubular valve assembly 34.
- the shape of the pallet 62 defines a rectangular shape complementary to the oblong section of the recirculation opening 60 and the feed opening 58 of the drawer body 36.
- the pallet 62 has a larger surface than the surface from the recirculation opening 60 and from the feed opening 58 of the drawer body.
- the spring arm 82 moves at an angle to the longitudinal X axis while remaining in a plane perpendicular to the X axis.
- the spring arm 82 moves while approaching the longitudinal and central X axis .
- the electromagnetic actuator 14 is connected to the drawer assembly 30 of the hydraulic element 16 which can move along the longitudinal axis X between:
- valve assembly 34 of the two embodiments.
- the pressure exerted on the outside of the pallet 62 is greater than that exerted on the inside of the pallet 62, the force exerted on the surface tends to deform the flexible arms 72,74,82.
- the arms 72, 74, 82 flex the pallet 60, the pallet 60 moves towards the central and longitudinal axis X, which frees the recirculation opening 60 and the opening
- the method of assembling the commandel2 device includes the following steps:
- the assembled control device 12 is then placed on the motor 10 and then a screw is screwed through the fixing paste 26 so as to come to tighten for the axial stop and in rotation.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1856149A FR3083569B1 (en) | 2018-07-04 | 2018-07-04 | CAMSHAFT DEPHASER CONTROL DEVICE |
PCT/EP2019/067182 WO2020007709A1 (en) | 2018-07-04 | 2019-06-27 | Device for controlling a camshaft phaser |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3818254A1 true EP3818254A1 (en) | 2021-05-12 |
Family
ID=63896324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19732402.3A Withdrawn EP3818254A1 (en) | 2018-07-04 | 2019-06-27 | Device for controlling a camshaft phaser |
Country Status (6)
Country | Link |
---|---|
US (1) | US11346259B2 (en) |
EP (1) | EP3818254A1 (en) |
KR (1) | KR20210028195A (en) |
CN (1) | CN112352091A (en) |
FR (1) | FR3083569B1 (en) |
WO (1) | WO2020007709A1 (en) |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4070857B2 (en) * | 1997-12-17 | 2008-04-02 | トヨタ自動車株式会社 | Valve characteristic control device for internal combustion engine |
DE10143433B4 (en) | 2001-09-05 | 2013-09-26 | Hilite Germany Gmbh | proportional valve |
US7140335B2 (en) * | 2004-09-17 | 2006-11-28 | Kaymor, Llc | Dynamic valve timing adjustment mechanism for internal combustion engines |
DE102006012775B4 (en) * | 2006-03-17 | 2008-01-31 | Hydraulik-Ring Gmbh | Fast cam phaser hydraulic circuit, in particular for camshaft adjuster, and corresponding control |
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DE102009031701A1 (en) * | 2009-07-04 | 2011-01-05 | Schaeffler Technologies Gmbh & Co. Kg | Central valve of a camshaft adjuster of an internal combustion engine |
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US10161274B2 (en) * | 2014-08-04 | 2018-12-25 | Hitachi Automotive Systems, Ltd. | Hydraulic control valve and valve-timing control device for internal-combustion engine using hydraulic control valve |
US9587527B2 (en) * | 2014-11-04 | 2017-03-07 | Delphi Technologies, Inc. | Camshaft phaser |
GB201512687D0 (en) * | 2015-07-20 | 2015-08-26 | Delphi Automotive Systems Lux | Valve |
US9976450B2 (en) * | 2015-11-10 | 2018-05-22 | Delphi Technologies Ip Limited | Camshaft phaser |
US9982576B2 (en) | 2016-07-14 | 2018-05-29 | Delphi Technologies Ip Limited | Hydraulic camshaft phaser and valve for operation thereof |
CN108049930B (en) * | 2016-10-06 | 2021-01-08 | 博格华纳公司 | Dual flap valve for variable cam timing system |
US10865666B2 (en) * | 2018-11-05 | 2020-12-15 | Borgwarner Inc. | Check valve for exhausting flow of fluid from a variable cam timing phaser |
US10662828B1 (en) * | 2018-12-11 | 2020-05-26 | Delphi Technologies Ip Limited | Camshaft phaser |
-
2018
- 2018-07-04 FR FR1856149A patent/FR3083569B1/en not_active Expired - Fee Related
-
2019
- 2019-06-27 CN CN201980043753.1A patent/CN112352091A/en active Pending
- 2019-06-27 KR KR1020217001414A patent/KR20210028195A/en unknown
- 2019-06-27 WO PCT/EP2019/067182 patent/WO2020007709A1/en active Application Filing
- 2019-06-27 EP EP19732402.3A patent/EP3818254A1/en not_active Withdrawn
- 2019-06-27 US US17/254,676 patent/US11346259B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3083569B1 (en) | 2020-11-27 |
KR20210028195A (en) | 2021-03-11 |
CN112352091A (en) | 2021-02-09 |
US20210148255A1 (en) | 2021-05-20 |
US11346259B2 (en) | 2022-05-31 |
WO2020007709A1 (en) | 2020-01-09 |
FR3083569A1 (en) | 2020-01-10 |
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