EP4587696A1 - Gasinjektor mit ankerdämpfer - Google Patents
Gasinjektor mit ankerdämpferInfo
- Publication number
- EP4587696A1 EP4587696A1 EP23736073.0A EP23736073A EP4587696A1 EP 4587696 A1 EP4587696 A1 EP 4587696A1 EP 23736073 A EP23736073 A EP 23736073A EP 4587696 A1 EP4587696 A1 EP 4587696A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- gas injector
- damper
- closing element
- spring
- 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- Withdrawn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
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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0269—Outwardly opening valves, e.g. poppet 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
-
- 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
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
-
- 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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- Gas injectors are known from the prior art in different designs. Due to the gaseous medium that gas injectors blow in, gas injectors must perform a very large stroke compared to injectors for liquid media, for example fuel injectors. However, in gas injectors this can lead to significant wear on components, particularly on a sealing seat and a stroke limiter. The large switching forces required for gas injectors increase the wear on the components during operation.
- the gas injector according to the invention for blowing in a gaseous medium, in particular for blowing in hydrogen or natural gas, with the features of claim 1 has the advantage that component wear can be significantly reduced. In particular, wear on an anchor can be significantly reduced. Furthermore, the gas injector according to the invention has significantly improved noise behavior. This is achieved according to the invention in that the gas injector has a closing element which opens and closes a through opening on a sealing seat. Furthermore, the gas injector includes a restoring element which returns the closing element to a closed starting position. Furthermore, the gas injector comprises a magnetic actuator with an armature, wherein the Magnetic actuator actuates the closing element and the armature has a maximum armature stroke SO.
- an armature damper is provided, which is set up to reduce a speed of the armature before the armature hits an armature stop, in particular an inner pole of the magnetic actuator, during an opening process of the gas injector. This means that significantly reduced wear on the armature and the armature stop can be achieved and excessive wear on the contact points between the armature and the armature stop during the opening stroke of the gas injector can be prevented.
- the anchor damper is preferably arranged on a side of the anchor facing away from the sealing seat. This means that the functionality and performance of the magnetic actuator is not restricted and the armature can carry out the maximum planned armature stroke SO up to the armature stop without any interference from an armature damper in this area.
- the anchor damper preferably comprises a spring element which is arranged on the side of the anchor facing away from the sealing seat.
- the spring element is arranged on a rear side of the anchor. This results in many degrees of freedom with regard to the design of the spring element. A very compact design of the gas injector can also be made possible.
- the gas injector further preferably comprises a hydraulic damper, which is arranged on a side of the closing element facing away from the sealing seat.
- the hydraulic damper is preferably set up to support the closing element during the opening process as well as the closing process.
- the anchor is particularly well dampened during the opening process, so that signs of wear on the anchor and anchor bolts can be avoided.
- the hydraulic damper also enables compensation for temperature-related changes in length of the components of the gas injector.
- Figure 3 is a schematic, enlarged partial sectional view of the
- Figure 4 is a schematic sectional view of a gas injector according to a second preferred embodiment of the invention.
- Figure 5 is a schematic representation of an individual part of the
- FIG. 1 shows the closed state of the gas injector.
- a gas inlet 31 is provided at the opposite end of the sealing seat 3. As can be seen from Figure 1, the gas inlet 31 is arranged in line with the closing element 2 on a central axis which defines an axial direction X-X of the gas injector 1.
- the arrows B indicate the gas flow through the gas injector 1 starting from the gas inlet 31 to the sealing seat 3.
- a restoring element 6 returns the gas injector 1 to the closed state shown in FIG. 1 after an opening process.
- the restoring element is a cylindrical coil spring, which is supported on a spring plate 60 and a housing component 10a.
- the gas injector 1 further comprises an armature damper 7, which is set up to brake and dampen a speed of the armature 51 before it hits the armature stop 53 during an opening process of the gas injector 1.
- the first adjusting disk 73 is fixed to an inner circumference of the inner housing 71.
- the second adjusting disk 74 is fixed on the closing element 2, more precisely on the anchor bolt 21.
- a preload force of the spring element 75 can thus be adjusted by positioning the first adjusting disk 73 in the axial direction X-X, which defines an axial position of the pressure disk 72 become.
- Inner pole 50 is guided through freely movably, preferably a guide 50a is provided for the anchor bolt 21.
- the anchor 51 is firmly connected to the anchor bolt 21 by means of a welded connection 51a.
- the gas injector 1 further comprises a hydraulic damper 8, which is operatively connected to the closing element 2.
- the hydraulic damper 8 is designed to brake and dampen the closing element, particularly when returning from the open state to the closed state. This keeps wear on the sealing seat 3 of the gas injector to a minimum.
- the hydraulic damper 8 can be constructed very simply and in particular can only be set up to dampen the closing element 2 during the resetting process.
- the armature damper 7 can be optimally designed for the armature and damping during the opening process and the hydraulic damper 8 can be optimally designed for damping when the gas injector is closing.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022209616.9A DE102022209616A1 (de) | 2022-09-14 | 2022-09-14 | Gasinjektor mit Ankerdämpfer |
| PCT/EP2023/067630 WO2024056224A1 (de) | 2022-09-14 | 2023-06-28 | Gasinjektor mit ankerdämpfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4587696A1 true EP4587696A1 (de) | 2025-07-23 |
Family
ID=87067000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23736073.0A Withdrawn EP4587696A1 (de) | 2022-09-14 | 2023-06-28 | Gasinjektor mit ankerdämpfer |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4587696A1 (de) |
| KR (1) | KR20250065908A (de) |
| CN (1) | CN119895138A (de) |
| DE (1) | DE102022209616A1 (de) |
| WO (1) | WO2024056224A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017207273A1 (de) * | 2016-06-30 | 2018-01-04 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
| DE102016220326A1 (de) * | 2016-10-18 | 2018-04-19 | Robert Bosch Gmbh | Ventil zum Zumessen eines gasförmigen oder flüssigen Kraftstoffs |
| DE102016225769A1 (de) * | 2016-12-21 | 2018-06-21 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
-
2022
- 2022-09-14 DE DE102022209616.9A patent/DE102022209616A1/de active Pending
-
2023
- 2023-06-28 CN CN202380066320.4A patent/CN119895138A/zh active Pending
- 2023-06-28 KR KR1020257011929A patent/KR20250065908A/ko active Pending
- 2023-06-28 WO PCT/EP2023/067630 patent/WO2024056224A1/de not_active Ceased
- 2023-06-28 EP EP23736073.0A patent/EP4587696A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024056224A1 (de) | 2024-03-21 |
| KR20250065908A (ko) | 2025-05-13 |
| DE102022209616A1 (de) | 2024-03-14 |
| CN119895138A (zh) | 2025-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250414 |
|
| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
Effective date: 20251028 |