EP3864281B1 - Injecteur - Google Patents
Injecteur Download PDFInfo
- Publication number
- EP3864281B1 EP3864281B1 EP19790178.8A EP19790178A EP3864281B1 EP 3864281 B1 EP3864281 B1 EP 3864281B1 EP 19790178 A EP19790178 A EP 19790178A EP 3864281 B1 EP3864281 B1 EP 3864281B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- injection needle
- switch
- input line
- electromagnet
- 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.)
- Active
Links
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000004821 Contact adhesive Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 229910000851 Alloy steel Inorganic materials 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
-
- 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
- F02M2200/20—Fuel-injection apparatus with permanent magnets
-
- 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
- F02M2200/242—Displacement sensors
-
- 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
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8046—Fuel injection apparatus manufacture, repair or assembly the manufacture involving injection moulding, e.g. of plastic or metal
-
- 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
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/07—Nozzles and injectors with controllable fuel supply
- F02M2700/072—Injection valve actuated by engine for supply of pressurised fuel; Electrically or electromagnetically actuated injectors
-
- 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
-
- 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
Definitions
- the present invention relates to an injector, which is also called an injection valve.
- injectors are typically used in internal combustion engines and generally function according to a servo principle in which an actuator is set in motion by applying a voltage and a nozzle needle of the injector is lifted out of a nozzle needle seat by a hydraulic transmission system, thereby injecting a fuel under high pressure into a combustion chamber.
- the basic operating principle of an injector is known to those skilled in the art and is only partially explained in the present invention.
- the nozzle needle and the nozzle needle seat have been used as switches so that when the nozzle needle is raised, a current flowing from the nozzle needle to the nozzle needle seat is interrupted.
- the actual opening time can be determined in a relatively simple manner using a differential current measurement.
- the switch formed by the contact pairing of needle tip and needle seat, to the ground potential.
- the ground potential is typically formed by the engine block in which the injector is located and in which it is screwed in. There is therefore already a connection from the nozzle needle seat to ground via the outer casing of the injector.
- the problem with this is that under certain circumstances the current flowing through the switch is very high. There are states in the injector where it is energized but the switch is still closed. This is the case, for example, when the energization has only just started and the needle has not yet been lifted out of its seat.
- the WO 2016/012242 A1 shows a prior art having the features of the preamble of claim 1.
- a high-temperature resistor chip as a resistor to limit the current flow when a switch is closed is advantageous because such a high-temperature resistor chip is compact in its design and has only a very small change in resistance when the temperature changes.
- the high-temperature resistor chip is preferably characterized in that its average power in the period of 5000 ⁇ s is in the range of 0.10 to 0.12 W, preferably in the range of 0.11 to 0.12 W.
- the high-temperature resistance chip can have a working temperature range of -55°C to +300°C, so that it remains usable even with the greatest temperature fluctuations, and/or have a non-magnetic structure.
- the non-magnetic structure guarantees that no components of the injector are influenced in an unwanted way and their performance is impaired.
- the high-temperature resistor chip does not contain any organic components.
- the input line and the output line are connected to an electromagnet, wherein the electromagnet preferably causes the nozzle needle tip to be lifted out of the nozzle needle seat when it is acted upon by current conducted via the input line and the output line.
- the electromagnet preferably causes the nozzle needle tip to be lifted out of the nozzle needle seat when it is acted upon by current conducted via the input line and the output line.
- the input line and the output line each represent a contact of a coil which is part of an electromagnet.
- the contacts of the coil are made of corrosion-resistant stainless steel. This material is particularly resistant to the conditions prevailing in the injector and is in particular not susceptible to fuels dispensed by the injector.
- the high-temperature resistance chip is attached to the input line or the output line in an electrically conductive state by means of contact adhesive or soldering.
- a line running from the high-temperature resistance chip to the switch (3) runs in a plastic overmolding of a magnetic coil, wherein the magnetic coil is designed to set the nozzle needle in motion.
- the plastic overmold not only surrounds a magnetic coil of the injector but also serves as a sheath for a line leading to the switch.
- This line is typically an intermediate piece that extends from the connection of the input line to the first connection of the switch, typically the nozzle needle.
- the resistor can also be arranged on or in the plastic overmolding. If it is arranged inside the plastic overmolding, it is also advantageous that the resistor is then better protected against harmful influences.
- the injector housing is made of an electrically conductive material.
- the injector housing is connected to the ground potential. This is typically done via an engine block with which an injector interacts during its intended use.
- the invention further comprises an internal combustion engine with an injector according to one of the variants discussed above and a device according to the variants discussed above.
- the invention further includes a motor vehicle having the internal combustion engine defined above.
- Fig.1 shows some parts of an injector 1 according to the invention.
- the input and output lines 4, 5 can be seen there, which correspond to the coil contacts of the coil for the electromagnet in an electromagnetic conversion of the injector 1.
- the magnetic coil is surrounded by a fuel coating 8, at the lower end of which a contact leading to the seat plate 9 is arranged.
- a schematic representation of the switch 3 formed by the nozzle needle and nozzle needle seat can be seen, which is open or closed depending on the state of the injector. What is not shown in the figure is that the end of the switch facing away from the seat plate 9 is connected to ground.
- a high-temperature resistance chip is provided in the line between a coil contact and the first terminal of the switch 3.
- Fig.2 shows an enlarged section of the Fig.1 and is also provided with current flow arrows. It can be seen that the current flows from the input line into the electromagnet, more precisely the winding of the electromagnet's coil, and then flows back again via the output line 5. In the process, a small amount of current is tapped from the circuit and flows out via the closed switch. The small amount of current is characterized by smaller arrows.
- Fig.3 shows an embodiment of the injector 1 according to the invention, which has an injector housing 2, an input line 4 leading into the injector housing 2 and an output line 5 leading out of the injector housing 2.
- an actuator 8 for controlling a nozzle needle is provided, which can be an electromagnet, for example.
- the mechanical switch 3 is also shown there, which results from the interaction of the movement of the nozzle needle and the nozzle needle seat. If the nozzle needle is lifted out of its seat and the Nozzle released for injection, switch 3 is in its open position. In contrast, when the needle closes, the contact is closed and switch 3 is in its conductive state.
- a first connection 6 of switch 3 is connected to input line 4 via a resistor R, a high-temperature resistor chip according to the invention.
- the second connection 7 of switch 3 is electrically connected to injector housing 2, which is typically equivalent to ground potential 9 during operation.
- the information as to whether the needle lift switch 3 is closed or open and thus whether the injection takes place or not is detected by the current difference between the input and output lines.
- the injector When the injector is activated, a voltage is applied to the input line 4 and the input line 5, which causes the nozzle needle to be indirectly set in motion via the actuator 8, which can be designed as an electromagnet.
- the needle lifts out of its seat and thus opens the contact. As a result, fuel is injected into the combustion chamber.
- the current flowing into the injector is compared with the current flowing out. If switch 3 is closed, slightly more current flows into injector 1 at one of the connections than out of the second connection. This is because part of the current flows directly to ground 9 via switch 3. This makes it quite easy to detect whether the switch is closed or not.
- switch 3 is open. If both currents are different, this means that switch 3 is closed. However, this type of detection only works if a voltage is applied to injector 1, since a current flow is required for detection.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (12)
- Injecteur (1) destiné à l'injection de carburant, comprenant :un boîtier d'injecteur (2),une aiguille d'injection mobile, qui est disposée dans le boîtier d'injecteur (2) et qui présente une pointe d'aiguille d'injection, etun siège d'aiguille d'injection destiné au logement de la pointe d'aiguille d'injection, dans lequelun appariement de contact de l'aiguille d'injection et du siège d'aiguille d'injection représente un commutateur (3) mécanique, qui prend un état fermé lors d'un contact entre la pointe d'aiguille d'injection et le siège d'aiguille d'injection et un état ouvert lors d'une interruption du contact,l'injecteur (1) dispose d'une ligne d'entrée (4) et d'une ligne de sortie (5) destinées à la commande d'un mouvement de l'aiguille d'injection,la ligne d'entrée (4) et la ligne de sortie (5) représentant chacune un contact d'une bobine qui fait partie d'un électroaimant (8),l'injecteur est caractérisé en ce quele commutateur (3) présente un premier raccordement (6) qui est relié à la ligne d'entrée (4) et un second raccordement (7) qui est relié au boîtier d'injecteur (2), etune résistance (R) est branchée entre le premier raccordement (6) du commutateur (3) et la ligne d'entrée (4),dans lequel la résistance (R) est une puce de résistance haute température.
- Injecteur (1) selon la revendication précédente 1, dans lequel une puissance moyenne de la puce de résistance haute température se situe, dans l'intervalle de 5000 µs, dans la plage de 0,10 à 0,12 W, de préférence dans la plage de 0,11 à 0,12 W.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel une plage de température de service de la puce de résistance haute température comprend -55 °C à -300 °C, de telle sorte qu'elle est opérationnelle même en cas de variations de température les plus élevées.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel la puce de résistance haute température possède une construction non magnétique et/ou ne présente aucun constituant organique.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel la ligne d'entrée (4) et la ligne de sortie (5) sont reliées à un électroaimant (8), l'électroaimant (8) entraînant de préférence un soulèvement de la pointe d'aiguille d'injection hors du siège d'aiguille d'injection lorsqu'il est soumis à l'action d'un courant passant par la ligne d'entrée (4) et la ligne de sortie (5).
- Injecteur (1) selon l'une des revendications précédentes, dans lequel les contacts de la bobine sont constitués d'acier allié résistant à la corrosion.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel la puce de résistance haute température est fixée à la ligne d'entrée (4) ou la ligne de sortie (5), dans un état conducteur d'électricité, par colle de contact ou par soudure.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel une ligne s'étendant de la puce de résistance haute température au commutateur (3) s'étend dans un enrobage en matière plastique d'une bobine d'électroaimant, la bobine d'électroaimant étant conçue pour mettre l'aiguille d'injection en mouvement.
- Injecteur (1) selon l'une des revendications précédentes, dans lequel le boîtier d'injecteur (2) est constitué d'un matériau conducteur d'électricité.
- Dispositif selon l'une des revendications précédentes, dans lequel le boîtier d'injecteur (2) est relié à un potentiel de masse.
- Moteur à combustion interne comportant un injecteur (1) selon l'une des revendications précédentes.
- Véhicule automobile comportant un moteur à combustion interne selon la revendication 11.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018125803.8A DE102018125803A1 (de) | 2018-10-17 | 2018-10-17 | Injektor |
PCT/EP2019/078043 WO2020079050A1 (fr) | 2018-10-17 | 2019-10-16 | Injecteur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3864281A1 EP3864281A1 (fr) | 2021-08-18 |
EP3864281B1 true EP3864281B1 (fr) | 2024-05-08 |
Family
ID=68290232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19790178.8A Active EP3864281B1 (fr) | 2018-10-17 | 2019-10-16 | Injecteur |
Country Status (5)
Country | Link |
---|---|
US (1) | US11421638B2 (fr) |
EP (1) | EP3864281B1 (fr) |
CN (1) | CN112955644B (fr) |
DE (1) | DE102018125803A1 (fr) |
WO (1) | WO2020079050A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020111787A1 (de) * | 2020-04-30 | 2021-11-04 | Liebherr-Components Deggendorf Gmbh | Vorrichtung zur Zustandserfassung eines Kraftstoffinjektors |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60129483A (ja) * | 1983-12-14 | 1985-07-10 | Diesel Kiki Co Ltd | 電磁弁 |
US4957085A (en) * | 1989-02-16 | 1990-09-18 | Anatoly Sverdlin | Fuel injection system for internal combustion engines |
JP3740733B2 (ja) * | 1996-02-13 | 2006-02-01 | いすゞ自動車株式会社 | 内燃機関の燃料噴射装置 |
DE10319329A1 (de) | 2003-04-29 | 2004-11-25 | Siemens Ag | Einspritzventil mit Sitzkontaktschalter |
WO2005042969A1 (fr) * | 2003-09-30 | 2005-05-12 | Fev Motorentechnik Gmbh | Ensemble detection servant a detecter le mouvement d'un element de commande deplace par un actionneur selon un mouvement de va-et-vient |
DE102004046192B4 (de) * | 2004-09-23 | 2006-12-28 | Siemens Ag | Schaltungsanordnung und Verfahren zum Laden und Entladen wenigstens einer kapazitiven Last |
EP2224123A1 (fr) | 2009-02-25 | 2010-09-01 | Delphi Technologies Holding S.à.r.l. | Actionneur piézoélectrique |
DE102013220528B4 (de) * | 2013-10-11 | 2015-05-07 | Continental Automotive Gmbh | Einspritzventil und Verfahren zum Betreiben eines Einspritzventils |
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 |
CN104763568B (zh) * | 2015-04-09 | 2017-06-30 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | 一种电磁式喷射阀以及用于操作电磁式喷射阀的方法 |
DE102017116379A1 (de) | 2017-07-20 | 2019-01-24 | Liebherr-Components Deggendorf Gmbh | Vorrichtung zur Zustandserfassung eines Injektors |
DE202018100337U1 (de) | 2018-01-22 | 2019-04-24 | Liebherr-Components Deggendorf Gmbh | Injektor und Vorrichtung zur Zustandserfassung eines solchen Injektors |
DE102018214135A1 (de) * | 2018-08-22 | 2020-02-27 | Robert Bosch Gmbh | Verfahren zur Ansteuerung eines Injektors |
DE102018221683A1 (de) * | 2018-12-13 | 2020-06-18 | Hyundai Motor Company | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems eines Kraftfahrzeugs und Kraftstoffeinspritzsystem |
-
2018
- 2018-10-17 DE DE102018125803.8A patent/DE102018125803A1/de active Pending
-
2019
- 2019-10-16 CN CN201980069157.0A patent/CN112955644B/zh active Active
- 2019-10-16 WO PCT/EP2019/078043 patent/WO2020079050A1/fr unknown
- 2019-10-16 US US17/286,419 patent/US11421638B2/en active Active
- 2019-10-16 EP EP19790178.8A patent/EP3864281B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
US20210388802A1 (en) | 2021-12-16 |
US11421638B2 (en) | 2022-08-23 |
DE102018125803A1 (de) | 2020-04-23 |
EP3864281A1 (fr) | 2021-08-18 |
CN112955644B (zh) | 2024-02-23 |
WO2020079050A1 (fr) | 2020-04-23 |
CN112955644A (zh) | 2021-06-11 |
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