EP3436683A1 - Injecteur de carburant - Google Patents
Injecteur de carburantInfo
- Publication number
- EP3436683A1 EP3436683A1 EP17712989.7A EP17712989A EP3436683A1 EP 3436683 A1 EP3436683 A1 EP 3436683A1 EP 17712989 A EP17712989 A EP 17712989A EP 3436683 A1 EP3436683 A1 EP 3436683A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- injector
- electrical connection
- nozzle
- seat
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims 1
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000615 nonconductor Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Classifications
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
- F02M51/0657—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve the body being hollow and its interior communicating with the fuel flow
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/24—Fuel-injection apparatus with sensors
- F02M2200/245—Position sensors, e.g. Hall sensors
Definitions
- the present invention generally relates to the field of fuel injectors and more specifically to an injector equipped with a means for detecting the position of the needle.
- a fuel injector conventionally comprises a needle controlled opening and closing depending on the pressure in a control chamber, which pressure is a function of the position of a control solenoid valve.
- Devices are known in which a sensor is arranged on the injector or an injector in which certain surfaces of the body components are provided with resistive coatings so that a measurement of electrical resistance can be made between two elements of the injector. .
- FR 3 013 080 in which the injector comprises resistive surface coatings arranged on several contact surfaces between parts, and in which the overall electrical resistivity of the injector between the body of the solenoid actuator and the injector body varies by at least three different intermittent ohmic values according to the kinetics of the injection needle of the injector.
- the object of the present invention is to provide a fuel injector for detecting the position of the needle in a simple, robust and inexpensive way.
- the present invention relates to a fuel injector for an internal combustion engine comprising:
- an injection nozzle with a body in which is arranged a movable needle between a closed position (PF), wherein a first end of the needle rests on a seat and closes the injection ports of the nozzle, and a position open (PO), wherein the first end of the needle is raised from its seat to allow injection;
- PF closed position
- PO position open
- control valve associated with the control chamber for selectively varying the fuel pressure in the control chamber and thereby controlling an opening or closing movement of the needle, the control valve being driven by an actuator;
- a needle position detection means comprises a first electrical connection in contact with the second end of the needle so as to bring it to a predetermined electrical potential.
- the needle is mounted in the nozzle body so as to be movable therein while being electrically isolated from the nozzle body, with the exception of the nozzle seat region, so that the needle is electrical contact with the nozzle body only in the closed position.
- the needle thus acts as a switch that allows or prevents the passage of the current from the needle head (second end) to the nozzle body, which is generally connected to ground (or fixed at a determined potential, different from the potential of the first electrical connection).
- the only needle position permitting the passage of the detection current is the closed position PF.
- the injector is designed so that as soon as the needle gets up, the current no longer passes from the needle to the nozzle body (either directly or indirectly).
- the injector according to the invention has the great advantage of simplicity combined with efficiency. It only requires a minor modification of the injector design, while allowing access to the fundamental data that is the moment of the opening and closing of the injector needle, essential for the management of the injector needle. injection into the engine.
- the top guide is preferably an insert including a needle guide bore and installed at the inlet of the nozzle body.
- the high guide forms the end piece of the first electrical connection, which makes it possible to bring the needle to the desired potential; it is assembled with the nozzle body so as to be electrically isolated therefrom.
- the nozzle body, the high guide member, the valve and the actuator are superimposed within an injector body extending in the axis of the needle, the body nozzle being in electrical contact with the injector body; while the high guide, the valve and the actuator are in electrical contact with each other, but isolated from the injector body.
- control valve body and the actuator body are electrically insulated at their periphery with respect to the injector body.
- This electrical insulation can be done by any appropriate means, by placing a coating around the control valve body and the actuator body during their manufacture, by making an inner lining of the injector body, in the appropriate places, or adding the insulation when assembling the injector.
- the needle is guided in at least one location of the nozzle body between the top guide and the seat.
- the surfaces of the nozzle body in contact with the needle, said guide surfaces, are advantageously provided with an electrical insulating coating.
- the first electrical connection extends from the high guide to an external electrical connection means, to facilitate the electrical connection of this end of the circuit.
- the connection of the nozzle can be obtained simply by screwing to a support piece connected to ground (or to another potential).
- the first electrical connection can be made by an insulated wire extending from the external electrical connection means to the high guide.
- the first electrical connection is made by an insulated wire extending from the external electrical connection means to the actuator body, and the electrical connection is continued by electrical contact with the valve body and the top guide.
- the first electrical connection is performed by an insulated wire extending from the external electrical connection means to the valve body, the electrical connection continuing by electrical contact with the high guide.
- the detection circuit defines an electrical path passing through the first electrical connection with the top guide and the needle, to pass through the seat to the nozzle body.
- the nozzle seat is coated with a resistive layer having a predetermined resistance, which makes it possible to calibrate the resistance of the seat contact.
- Figure 1 is an axial sectional view of a first embodiment of the present injector, the needle being in the closed position;
- Figure 2 two graphs illustrating (a) the stroke of the needle and (b) the measured voltage as a function of time;
- Figure 3 is a sectional view illustrating in detail the insulation of the top guide, according to another embodiment.
- FIG. 1 illustrates an embodiment of the invention relating to a fuel injector 10, here a diesel injector, although the invention is entirely transferable to a fuel injector or any other fuel, the injector 10 being generally part of an injection system comprising several injectors.
- a fuel injector 10 here a diesel injector
- the invention is entirely transferable to a fuel injector or any other fuel, the injector 10 being generally part of an injection system comprising several injectors.
- the description will detail the elements of the invention and will remain more succinct and general as to the surrounding elements.
- the injector 10 extends along a main axis A and comprises, from the bottom upwards, according to the conventional and non-limiting sense of the figures: a nozzle 12 comprising a needle 14 arranged in a nozzle body 16; a high guide element 18; a control valve 20 comprising a valve body 22 in which is arranged a fuel passage with seat and a closure member; an actuator 24 comprising an actuator body 26 accommodating a fixed winding and a movable magnetic armature.
- the control valve 20 and the actuator 24 may be of conventional type and are therefore not described in detail.
- the nozzle bodies 16, high guide 18, valve body 22 and actuator body 26 are held integral with each other by any suitable means.
- an injector body 28 in the form of a nut bearing on a shoulder of the nozzle body 16 and screwing on the actuator body 26, the valve body 22 being sandwiched between the two other bodies.
- the injector body is formed by the parts 28 and 28a.
- the nozzle body 16 comprises a stepped inner axial bore 30 extending from an upper end, where it has a large diameter, to a low end closing in a point so as to form a tapered nozzle body seat 32.
- the bore 30 forms, in two places, a low cylindrical guide 36 at the level of which the needle 14 comprises a projecting annular section 38 sliding in the bottom guide 36.
- the fuel passage at this low guide is for example by one or more orifice (s) calibrated (s) or groove (s) (straight or helical) in the annular scar 38.
- the guide of the needle 14 at the top is obtained by the top guide 18, which is an independent piece arranged between the nozzle body 16 and the valve body 22 and held fixed by the assembly of the parts of the injector, in particular by the axial compression exerted by the injector nut.
- the high guide 18 guides the upper portion of the needle 14, referred to as the needle head 42, through a guide bore 44.
- the needle head 42 in combination with the valve body 22 and the bore of guide 44 define a control chamber 46.
- the needle 14 is generally cylindrical and extends axially A between the needle head 42, at the top of the figure, and a pointed end 48, at the bottom of the figure, forming a needle seat 50 cooperating with the seat nozzle body 32 of the body 16.
- the needle When the needle rests on the nozzle body seat 32, it is in the closed position PF, fuel injection via the orifices 34 is prevented.
- the lifting of the needle 14 is obtained by adjusting the pressure in the control chamber 46, which makes it possible to bring the needle into a total open position denoted PO (typically at the upper stop), in which the fuel can pass to the injection ports 34.
- the bottom guide 36 is close to the needle seats 50 and the nozzle body 32.
- the needle 14 is provided with an annular protuberance 52 whose upper face 54, directed towards the needle head 42, provides a bearing surface for a spring 56 urging the needle 14 towards its closed position PF in which the needle tip 48 rests on its seat 32 and closes the injection ports 34.
- the spring 56 is arranged under the top guide 18 and is compressed against the lower surface 58 of the top guide.
- the injector 10 is moreover conventionally provided with a fuel circulation circuit which, on the one hand, allows the supply of the high pressure fuel via a high pressure circuit 57, from an inlet mouth to the orifices injection 34 and, on the other hand recirculation of fuel to a low pressure tank via a low pressure internal circuit (not shown).
- the high-pressure circuit comprises in particular a bypass channel (not shown) leading to the control chamber 46, from which the low-pressure circuit leaves via an evacuation channel (not shown) controlled in opening and closing by the control valve. .
- the winding of the actuator When the winding of the actuator is electrically powered, it attracts the magnetic armature connected to the shutter member of the control valve, which opens the discharge channel and allows the fuel trapped in the control chamber 46 to evacuate to the low pressure circuit.
- the pressure in the control chamber 46 then drops, and the needle 14 moves in the bore of the nozzle body to a fully open position PO in which the needle seat 50 is moved away from the valve body seat 32, so as to allow the injection of fuel via the injection holes 34, the top of the needle head 42 being in contact with the ceiling surface 59 (constituted by the underside of the valve body 22) of the chamber order 46.
- the magnetic armature assembly and valve closure member When the actuator is not powered, the magnetic armature assembly and valve closure member is pushed by a valve spring to a position in which the discharge channel is closed which retains in the control chamber 46 the high pressure fuel that gets there. The pressure in the control chamber 46 then rises and, the needle 14, pushed by the spring 56 and the pressure in the control chamber 46, moves to the closed position PF in which the needle seat 50 is in sealing contact against the nozzle body seat 32, such as to prohibit the injection of fuel and wherein the top of the head of the needle 42 is remote from the ceiling surface 59 of the control chamber 46. This operation is well known.
- the injector is equipped with a means for detecting the position of the needle 14.
- the means for detecting the position of the needle 14 comprises an electrical detection circuit with a switch function whose pointer 14 constitutes the moving contactor.
- the detection circuit makes it possible to carry out an electrical measurement ME between an external electrical connection means of the injector and the mass M (or more generally a different potential) to which the nozzle body 16 and the nozzle are connected. injector body 28.
- the needle is mounted in the nozzle body 16 so as to be able to move therein while being electrically isolated from the nozzle body 16 except for the region of the body seat 32. nozzle, resp. needle seat 50.
- This requires the use of electrical insulating material since most parts of the injector, including nozzle body, needle, guide high, valve body actuator body and injector body are metal (steel), and therefore conduct electricity.
- the contact surfaces between the needle 14 and the nozzle body 16 are isolated, for example by means of an electrical insulating coating noted S1, applied to the guide surfaces of the nozzle body.
- insulating coatings could be applied to the needle 14 at the areas of contact with the nozzle body 16.
- the nozzle body seat 32, the needle seat 50, the head of the needle 42 and the guide bore 44 remain electrically conductive and without electrical insulation coating.
- the needle seat 50 comprises a resistive layer (not shown) having a predetermined resistance, which enables the contact resistance value (i.e., when the needle rests on the seat) to be calibrated.
- An electrical insulating layer S2 is also provided between the top guide 18 and the nozzle body 16 to electrically insulate the top guide of the nozzle body. Since, in the variant shown, the upper face of the upper guide 18 is in contact with the valve body 22, insulating layers S3 and S4 are still provided at the periphery of the valve body 22 and the actuator body 26. also in contact with the valve body 22.
- the detection circuit comprises a first electrical connection in contact with the upper portion 42 of the needle 14 so as to bring it to a predetermined electrical potential.
- This first connection is here made to connect the top guide 18 to an external electrical connector (not shown). As the upper part 42 of the needle 14 is guided by, and in electrical contact with, the top guide 18, it forms the end portion of the first electrical connection.
- the first electrical connection is made by means of an insulated electrical wire (not shown) extending from the external electrical connector to the actuator body 26, and the electrical connection is continued by electrical contact with the body of the actuator 26. valve 22 and the top guide 18.
- the arrangement of the parts of the injector in combination with the electrical coatings S1 to S4 thus makes it possible to define a detection circuit in which the needle is the only movable member and acts as a contact element for closing or open the detection circuit, that is to say to connect, or not, the first electrical connection to ground, depending on whether the needle is in the closed or open position.
- the detection circuit is closed.
- An electrical sensing current which is applied at the outer connector may flow through the actuator body 26 and the valve body 22 to the top guide 18, and then pass into the needle head 42 to the tip of the connector. needle 48.
- the needle seat 50 is in contact with the body seat 32. This seat region is not electrically insulated, the current can flow from the needle 14 towards the nozzle body 16, and therefore to the mass. This electric path is indicated by the thick black line in Figure 1.
- the needle seat electrical contact is interrupted, and the detection circuit opens.
- the nozzle body is connected to the mass; it can also be fixed at a given potential. In general, what is desired is a potential difference between the first electrical connection and the nozzle body, in order to be able to detect the needle contact.
- the detection circuit remains open as long as the needle 14 is raised, whether in a ballistic position or completely open. Indeed, the top guide 18 and the valve body 22 are in electrical contact and at the same potential as the needle. There is no other position of the needle capable of closing the detection circuit to ground. The moment when the needle reaches its fully open position PO, in abutment with the valve body in the control chamber, is not detected.
- the "closed” state of the detection circuit corresponds to the only closed position PF of the needle 14, when it rests on the body seat 32.
- the detection circuit is in the "open” state as long as the needle 14 is raised, partially or totally.
- a measurement unit is configured to measure the potential difference Vm between the vehicle ground and the outer connector of the first link, to which a given voltage is applied.
- FIG. 2 represents on two superimposed graphs the stroke C of the needle 14 and the voltage Vm as a function of time.
- the needle rests on its seat and the detection circuit is closed, allowing the passage of current to ground, which results in a zero voltage Vm (indicated level "0" on the graph).
- Vm indicated level "0" on the graph.
- the contact is interrupted and the measured voltage is that applied to the outer connector, which is indicated by a level "1" on the graph.
- the period during which the needle is in PF (zero stroke Lf) is noted Tf.
- the needle is open during the period T 0 , during which it reaches the full open position L 0 .
- the present injector allows reliable detection of the opening and closing of the injector without major modification of the design.
- Insulating layers S1 to S4 can be made by any technique and in any suitable material.
- the coatings can for example have a thickness up to 100 ⁇ . They may be layered on the surfaces concerned, for example by vacuum deposition techniques; or made as separate pieces that are put in place during assembly.
- FIG. 3 relates to another variant in which the first electrical connection is made by means of an insulated electrical wire 60 extending from the external electrical connector to the top guide 18.
- This electrical wire can pass through the respective bodies or to their periphery; more generally, the insulated electrical wire is arranged in the upper part of the injector, from the outer connector to the high guide.
- the electrical wire 60 comprises a metallic conducting wire 60.1 surrounded by an electrical insulating coating 60.2.
- the wire is guided from the outer connector through the upper part of the injector, through a passage 62 arranged in the valve body 22 to reach a housing 64 of the top guide.
- the end of the wire 60 is stripped, so as to establish the electrical contact between the outer electrical connector and the top guide 18, to carry the needle 14, by contact with its end 42 , at the desired potential.
- the top guide is compressed between the nozzle body 16 and the valve body 22.
- the top guide 18 is electrically isolated from the nozzle body 16 as well as from the body of the nozzle. valve 22.
- two pieces of electrical insulating material designated S5 and S6 are installed under the lower and upper face of the top guide 18.
- the piece S5, generally washer, is located therefore between the lower face of the top guide 18 and the shoulder 66 inside the portion of the nozzle body 16 which allows the centering and axial locking of the top guide.
- the upper insulating part S6 is at the interface between the upper face of the upper guide 18 and the lower face 59 (ice face) of the valve body 22, to isolate them electrically from each other.
- This part S6 may take the form of a disc made of electrically insulating material, comprising appropriate holes, in particular for the passage of the wire 60 and the fuel passage, in particular from the control chamber 46 towards the control valve body 22. But the piece S6 also ensures the electrical insulation of the needle head 42 vis-à-vis the valve body 22.
- an electrical insulator S7 which surrounds a portion of the peripheral wall of the guide high, at the interface with the cylindrical wall 67 of the nozzle body 16 bordering the shoulder 66.
- This layer S7 electrical insulator is preferably made by a treatment intended to form an insulating layer deposit on the part.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1652872A FR3049657B1 (fr) | 2016-04-01 | 2016-04-01 | Injecteur de carburant |
| FR1653083 | 2016-04-07 | ||
| PCT/EP2017/056890 WO2017167627A1 (fr) | 2016-04-01 | 2017-03-22 | Injecteur de carburant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3436683A1 true EP3436683A1 (fr) | 2019-02-06 |
| EP3436683B1 EP3436683B1 (fr) | 2020-12-02 |
Family
ID=58401578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17712989.7A Revoked EP3436683B1 (fr) | 2016-04-01 | 2017-03-22 | Injecteur de carburant |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190120188A1 (fr) |
| EP (1) | EP3436683B1 (fr) |
| KR (1) | KR102268855B1 (fr) |
| CN (1) | CN109196211A (fr) |
| WO (1) | WO2017167627A1 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018101351A1 (de) * | 2018-01-22 | 2019-07-25 | Liebherr-Components Deggendorf Gmbh | Sitzplatte für einen Injektor und Verfahren zur Herstellung einer solchen Sitzplatte |
| GB2570663A (en) * | 2018-01-31 | 2019-08-07 | Delphi Automotive Systems Lux | Fuel Injector For An Internal Combustion Engine |
| GB2576146B (en) | 2018-08-01 | 2021-06-02 | Delphi Tech Ip Ltd | Fuel injector with closed loop detection |
| FR3089564B1 (fr) * | 2018-12-07 | 2023-01-27 | Delphi Tech Ip Ltd | Dispositif de décharge d’un interrupteur |
| US11067028B2 (en) * | 2019-01-16 | 2021-07-20 | Caterpillar Inc. | Fuel injector |
| FR3092625B1 (fr) * | 2019-02-07 | 2021-04-16 | Delphi Tech Ip Ltd | Ensemble guide haut |
| GB2585064B (en) | 2019-06-27 | 2021-11-10 | Delphi Tech Ip Ltd | Fuel injector with closed loop detection |
| GB2585196B (en) * | 2019-07-01 | 2021-10-27 | Delphi Tech Ip Ltd | Method and system to determine the state of needle valve of a fuel injector |
| DE102019121538A1 (de) * | 2019-08-09 | 2021-02-11 | Liebherr-Components Deggendorf Gmbh | Sitzplatte für einen Injektor und Verfahren zum Herstellen einer solchen Sitzplatte |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066059A (en) | 1976-01-02 | 1978-01-03 | Texaco Inc. | Fuel injection nozzle valve and ignition system |
| JPS60182351A (ja) | 1984-02-28 | 1985-09-17 | Diesel Kiki Co Ltd | スイツチ付弁装置 |
| WO2002016757A1 (fr) | 2000-08-21 | 2002-02-28 | Volvo Lastvagnar Ab | Dispositif detecteur de la position d'une aiguille |
| DE10313623A1 (de) * | 2003-03-26 | 2004-10-21 | Siemens Ag | Kontaktiervorrichtung für einen Injektor eines Einspritzsystems für die Kraftstoffeinspritzung sowie Injektor mit einer Kontaktiervorrichtung |
| DE10338489B3 (de) | 2003-08-21 | 2004-12-16 | Siemens Ag | Einspritzventil mit kapazitivem Ventilhubsensor |
| DE102005049259B3 (de) * | 2005-10-14 | 2007-01-04 | Siemens Ag | Ventilvorrichtung |
| US7735751B2 (en) * | 2006-01-23 | 2010-06-15 | Kimberly-Clark Worldwide, Inc. | Ultrasonic liquid delivery device |
| DE102011016168B4 (de) | 2011-04-05 | 2015-02-12 | L'orange Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
| FR3013080A1 (fr) | 2013-11-12 | 2015-05-15 | Delphi Technologies Holding | Injecteur de carburant |
| FR3023875A1 (fr) | 2014-07-15 | 2016-01-22 | Delphi Int Operations Luxembourg Sarl | Injecteur de carburant |
| FR3024183B1 (fr) * | 2014-07-22 | 2019-07-26 | Delphi Technologies Ip Limited | Injecteur de carburant |
-
2017
- 2017-03-22 WO PCT/EP2017/056890 patent/WO2017167627A1/fr not_active Ceased
- 2017-03-22 CN CN201780032016.2A patent/CN109196211A/zh active Pending
- 2017-03-22 EP EP17712989.7A patent/EP3436683B1/fr not_active Revoked
- 2017-03-22 KR KR1020187031528A patent/KR102268855B1/ko active Active
- 2017-03-22 US US16/090,389 patent/US20190120188A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP3436683B1 (fr) | 2020-12-02 |
| WO2017167627A1 (fr) | 2017-10-05 |
| US20190120188A1 (en) | 2019-04-25 |
| KR20180122738A (ko) | 2018-11-13 |
| CN109196211A (zh) | 2019-01-11 |
| KR102268855B1 (ko) | 2021-06-28 |
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